/* roulang page: index */
:root {
            --kaiyun-bg: #0A0F0E;
            --kaiyun-bg-secondary: #0E1512;
            --kaiyun-panel: #111A17;
            --kaiyun-panel-light: #16211D;
            --kaiyun-green: #A6F944;
            --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
            --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
            --kaiyun-amber: #FF8A3D;
            --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
            --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
            --kaiyun-white: #F4F7F2;
            --kaiyun-silver: #C9D2CC;
            --kaiyun-muted: #88938E;
            --kaiyun-border: rgba(255, 255, 255, 0.08);
            --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
            --kaiyun-radius-sm: 4px;
            --kaiyun-radius-md: 8px;
            --kaiyun-radius-lg: 12px;
            --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
            --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
            --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
            --kaiyun-section-gap: 96px;
            --kaiyun-container-max: 1200px;
            --kaiyun-nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--kaiyun-bg);
        }

        body {
            margin: 0;
            font-family: var(--kaiyun-font-family);
            background-color: var(--kaiyun-bg);
            color: var(--kaiyun-white);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--kaiyun-silver);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }
        a:hover {
            color: var(--kaiyun-amber);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .kaiyun-container {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 底纹网格背景 ===== */
        .kaiyun-grid-bg {
            position: relative;
            background-color: var(--kaiyun-bg);
        }
        .kaiyun-grid-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 1;
        }
        .kaiyun-grid-bg > * {
            position: relative;
            z-index: 2;
        }

        /* ===== 导航 ===== */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 14, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            min-height: var(--kaiyun-nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }
        .kaiyun-header.scrolled {
            box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
            background: rgba(10, 15, 14, 0.94);
        }
        .kaiyun-header .kaiyun-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--kaiyun-white);
            letter-spacing: 0.4px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .kaiyun-logo:hover {
            color: var(--kaiyun-green);
        }
        .kaiyun-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
                radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
                #111A17;
            border: 1px solid rgba(166, 249, 68, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            color: var(--kaiyun-green);
            letter-spacing: -0.5px;
            box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }
        .kaiyun-nav-links li {
            margin: 0;
        }
        .kaiyun-nav-links a {
            color: var(--kaiyun-silver);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color 0.25s ease;
        }
        .kaiyun-nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--kaiyun-green);
            transition: width 0.28s ease;
            border-radius: 2px;
        }
        .kaiyun-nav-links a:hover,
        .kaiyun-nav-links a.active {
            color: var(--kaiyun-white);
        }
        .kaiyun-nav-links a:hover::after,
        .kaiyun-nav-links a.active::after {
            width: 100%;
        }

        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--kaiyun-radius-sm);
            font-weight: 600;
            cursor: pointer;
            padding: 10px 20px;
            font-size: 15px;
            border: none;
            transition: all 0.25s ease;
            white-space: nowrap;
            min-height: 44px;
        }
        .kaiyun-btn-primary {
            background: var(--kaiyun-amber);
            color: #1A120B;
            box-shadow: 0 4px 18px rgba(255, 138, 61, 0.25);
        }
        .kaiyun-btn-primary:hover {
            background: #FF9D5C;
            color: #1A120B;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 138, 61, 0.4);
        }
        .kaiyun-btn-ghost {
            background: transparent;
            border: 1px solid var(--kaiyun-border-medium);
            color: var(--kaiyun-white);
        }
        .kaiyun-btn-ghost:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
            transform: translateY(-2px);
            box-shadow: 0 0 16px rgba(166, 249, 68, 0.15);
        }
        .kaiyun-btn-lg {
            padding: 14px 28px;
            font-size: 16px;
        }

        /* 移动端汉堡 */
        .kaiyun-mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--kaiyun-border-medium);
            border-radius: 4px;
            color: var(--kaiyun-white);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
            padding: 0;
        }
        .kaiyun-mobile-toggle span {
            width: 20px;
            height: 2px;
            background: var(--kaiyun-white);
            display: block;
            transition: all 0.25s ease;
        }
        .kaiyun-mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(10, 15, 14, 0.98);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 8px;
            z-index: 99;
        }
        .kaiyun-mobile-menu a {
            color: var(--kaiyun-silver);
            font-size: 16px;
            padding: 10px 0;
            border-bottom: 1px solid var(--kaiyun-border);
            display: block;
        }
        .kaiyun-mobile-menu a:hover,
        .kaiyun-mobile-menu a.active {
            color: var(--kaiyun-green);
        }
        .kaiyun-mobile-menu .kaiyun-btn {
            margin-top: 12px;
            width: 100%;
        }

        /* ===== Hero ===== */
        .kaiyun-hero {
            min-height: calc(100vh - var(--kaiyun-nav-height));
            display: flex;
            align-items: center;
            position: relative;
            background-image: linear-gradient(rgba(10, 15, 14, 0.78), rgba(10, 15, 14, 0.85)),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 48px 0 64px;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .kaiyun-hero .kaiyun-container {
            width: 100%;
        }
        .kaiyun-hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .kaiyun-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--kaiyun-green-soft);
            border: 1px solid rgba(166, 249, 68, 0.3);
            color: var(--kaiyun-green);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .kaiyun-hero-tag::before {
            content: "";
            width: 7px;
            height: 7px;
            background: var(--kaiyun-green);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(166, 249, 68, 0.7);
        }

        .kaiyun-hero h1 {
            font-size: clamp(34px, 4.6vw, 52px);
            font-weight: 800;
            line-height: 1.22;
            margin: 0 0 20px;
            letter-spacing: -0.8px;
            color: var(--kaiyun-white);
        }
        .kaiyun-hero h1 .kaiyun-highlight {
            color: var(--kaiyun-green);
            text-shadow: 0 0 24px rgba(166, 249, 68, 0.25);
        }
        .kaiyun-hero-sub {
            font-size: 17px;
            line-height: 1.9;
            color: var(--kaiyun-silver);
            margin: 0 0 28px;
            max-width: 680px;
        }
        .kaiyun-hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .kaiyun-hero-panel {
            background: rgba(17, 26, 23, 0.86);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 28px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: var(--kaiyun-shadow-md);
            position: relative;
        }
        .kaiyun-hero-panel::before,
        .kaiyun-hero-panel::after {
            content: "";
            position: absolute;
            width: 28px;
            height: 28px;
            border: 2px solid var(--kaiyun-green);
            opacity: 0.5;
        }
        .kaiyun-hero-panel::before {
            top: -2px;
            left: -2px;
            border-right: none;
            border-bottom: none;
            border-top-left-radius: 4px;
        }
        .kaiyun-hero-panel::after {
            bottom: -2px;
            right: -2px;
            border-left: none;
            border-top: none;
            border-bottom-right-radius: 4px;
        }
        .kaiyun-hero-panel-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--kaiyun-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-hero-panel-title::before {
            content: "";
            width: 16px;
            height: 2px;
            background: var(--kaiyun-amber);
        }
        .kaiyun-hero-stat {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .kaiyun-hero-stat:last-child {
            border-bottom: none;
        }
        .kaiyun-hero-stat-label {
            font-size: 15px;
            color: var(--kaiyun-silver);
        }
        .kaiyun-hero-stat-value {
            font-family: var(--kaiyun-font-mono);
            font-size: 22px;
            font-weight: 800;
            color: var(--kaiyun-green);
            letter-spacing: -0.5px;
        }

        /* Hero 底部数据条 */
        .kaiyun-hero-databar {
            margin-top: 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            background: rgba(17, 26, 23, 0.7);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
        }
        .kaiyun-hero-databar-item {
            padding: 20px 24px;
            text-align: center;
            border-right: 1px solid var(--kaiyun-border);
            position: relative;
        }
        .kaiyun-hero-databar-item:last-child {
            border-right: none;
        }
        .kaiyun-hero-databar-num {
            font-family: var(--kaiyun-font-mono);
            font-size: 32px;
            font-weight: 800;
            color: var(--kaiyun-white);
            letter-spacing: -1px;
            line-height: 1.3;
        }
        .kaiyun-hero-databar-num em {
            font-style: normal;
            color: var(--kaiyun-green);
        }
        .kaiyun-hero-databar-label {
            font-size: 13px;
            color: var(--kaiyun-muted);
            letter-spacing: 0.5px;
        }

        /* ===== 板块通用 ===== */
        .kaiyun-section {
            padding: var(--kaiyun-section-gap) 0;
            position: relative;
        }
        .kaiyun-section-dark {
            background-color: var(--kaiyun-bg-secondary);
        }
        .kaiyun-section-panel {
            background-color: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
        }
        .kaiyun-section-head {
            margin-bottom: 48px;
        }
        .kaiyun-section-head h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 800;
            margin: 0 0 12px;
            color: var(--kaiyun-white);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .kaiyun-section-head h2::before {
            content: "";
            width: 4px;
            height: 28px;
            background: var(--kaiyun-green);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(166, 249, 68, 0.3);
        }
        .kaiyun-section-head p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            margin: 0;
            max-width: 720px;
        }

        /* ===== 会员权益 ===== */
        .kaiyun-benefits-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .kaiyun-benefit-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
            position: relative;
            min-height: 220px;
            display: flex;
            flex-direction: column;
        }
        .kaiyun-benefit-card:hover {
            transform: translateY(-6px);
            border-color: rgba(166, 249, 68, 0.45);
            box-shadow: var(--kaiyun-shadow-glow);
        }
        .kaiyun-benefit-card-featured {
            grid-row: span 2;
            min-height: 100%;
        }
        .kaiyun-benefit-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .kaiyun-benefit-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 14, 0.2), rgba(10, 15, 14, 0.75));
        }
        .kaiyun-benefit-card:nth-child(1) .kaiyun-benefit-card-img {
            background-image: url('/assets/images/coverpic/cover-1.webp');
            height: 280px;
        }
        .kaiyun-benefit-card:nth-child(2) .kaiyun-benefit-card-img {
            background-image: url('/assets/images/coverpic/cover-2.webp');
        }
        .kaiyun-benefit-card:nth-child(3) .kaiyun-benefit-card-img {
            background-image: url('/assets/images/coverpic/cover-3.webp');
        }
        .kaiyun-benefit-card:nth-child(4) .kaiyun-benefit-card-img {
            background-image: url('/assets/images/coverpic/cover-4.webp');
            height: 140px;
        }
        .kaiyun-benefit-card-body {
            padding: 22px 24px;
            flex: 1;
        }
        .kaiyun-benefit-card-tag {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--kaiyun-green);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
            font-family: var(--kaiyun-font-mono);
        }
        .kaiyun-benefit-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--kaiyun-white);
        }
        .kaiyun-benefit-card-body p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.8;
        }
        .kaiyun-benefit-card-num {
            position: absolute;
            top: 12px;
            right: 16px;
            font-family: var(--kaiyun-font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--kaiyun-amber);
            background: rgba(255, 138, 61, 0.12);
            padding: 3px 10px;
            border-radius: 4px;
            z-index: 5;
        }

        /* ===== 价格对比 ===== */
        .kaiyun-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .kaiyun-pricing-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
            position: relative;
            min-height: 380px;
        }
        .kaiyun-pricing-card:hover {
            transform: translateY(-6px);
            border-color: var(--kaiyun-border-medium);
            box-shadow: var(--kaiyun-shadow-md);
        }
        .kaiyun-pricing-card-featured {
            border-color: rgba(166, 249, 68, 0.45);
            box-shadow: var(--kaiyun-shadow-glow);
            background: rgba(166, 249, 68, 0.05);
        }
        .kaiyun-pricing-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--kaiyun-amber);
            color: #1A120B;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .kaiyun-pricing-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 6px;
        }
        .kaiyun-pricing-desc {
            font-size: 14px;
            color: var(--kaiyun-muted);
            margin: 0 0 18px;
        }
        .kaiyun-pricing-price {
            font-size: 36px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: var(--kaiyun-green);
            margin: 0 0 18px;
        }
        .kaiyun-pricing-price span {
            font-size: 14px;
            font-weight: 500;
            color: var(--kaiyun-muted);
        }
        .kaiyun-pricing-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            flex: 1;
        }
        .kaiyun-pricing-list li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--kaiyun-silver);
            border-bottom: 1px solid var(--kaiyun-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-pricing-list li::before {
            content: "›";
            color: var(--kaiyun-green);
            font-weight: 700;
            font-size: 16px;
        }
        .kaiyun-pricing-card .kaiyun-btn {
            width: 100%;
        }

        /* ===== 新手入门 ===== */
        .kaiyun-steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .kaiyun-step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px 20px;
            position: relative;
            transition: transform 0.25s ease, border-color 0.25s ease;
        }
        .kaiyun-step-card:hover {
            transform: translateY(-4px);
            border-color: rgba(166, 249, 68, 0.4);
        }
        .kaiyun-step-num {
            font-family: var(--kaiyun-font-mono);
            font-size: 40px;
            font-weight: 800;
            color: rgba(166, 249, 68, 0.25);
            line-height: 1;
            margin-bottom: 12px;
        }
        .kaiyun-step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 8px;
        }
        .kaiyun-step-card p {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.75;
        }

        /* ===== 资讯动态 ===== */
        .kaiyun-news-layout {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 32px;
        }
        .kaiyun-news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .kaiyun-news-item {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--kaiyun-border);
            transition: padding-left 0.25s ease, border-color 0.25s ease;
            align-items: flex-start;
        }
        .kaiyun-news-item:hover {
            padding-left: 8px;
            border-color: rgba(166, 249, 68, 0.35);
        }
        .kaiyun-news-date {
            font-family: var(--kaiyun-font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--kaiyun-amber);
            background: var(--kaiyun-amber-soft);
            padding: 4px 10px;
            border-radius: 4px;
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 72px;
            text-align: center;
        }
        .kaiyun-news-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 6px;
            line-height: 1.5;
        }
        .kaiyun-news-content p {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.7;
        }
        .kaiyun-news-sidebar {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px;
            height: fit-content;
        }
        .kaiyun-news-sidebar h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-news-sidebar h3::before {
            content: "";
            width: 3px;
            height: 18px;
            background: var(--kaiyun-amber);
            border-radius: 2px;
        }
        .kaiyun-news-sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .kaiyun-news-sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .kaiyun-news-sidebar-list li:last-child {
            border-bottom: none;
        }
        .kaiyun-news-sidebar-list a {
            color: var(--kaiyun-silver);
            font-size: 14px;
            line-height: 1.6;
            display: block;
        }
        .kaiyun-news-sidebar-list a:hover {
            color: var(--kaiyun-green);
        }

        /* ===== 用户评价 ===== */
        .kaiyun-reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .kaiyun-review-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 22px 20px;
            transition: transform 0.25s ease, border-color 0.25s ease;
        }
        .kaiyun-review-card:hover {
            transform: translateY(-4px);
            border-color: rgba(166, 249, 68, 0.35);
        }
        .kaiyun-review-quote {
            font-size: 14px;
            color: var(--kaiyun-silver);
            line-height: 1.8;
            margin: 0 0 14px;
            position: relative;
            padding-left: 14px;
        }
        .kaiyun-review-quote::before {
            content: "“";
            font-size: 28px;
            color: var(--kaiyun-green);
            position: absolute;
            left: -4px;
            top: -6px;
            opacity: 0.7;
        }
        .kaiyun-review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .kaiyun-review-author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(166, 249, 68, 0.3), rgba(255, 138, 61, 0.2));
            border: 1px solid var(--kaiyun-border-medium);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--kaiyun-white);
        }
        .kaiyun-review-author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--kaiyun-white);
        }
        .kaiyun-review-author-role {
            font-size: 12px;
            color: var(--kaiyun-muted);
        }

        /* ===== 品牌介绍 + 合作伙伴 ===== */
        .kaiyun-brand-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .kaiyun-brand-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 16px;
        }
        .kaiyun-brand-text p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            line-height: 1.9;
            margin: 0 0 12px;
        }
        .kaiyun-partner-tags {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }
        .kaiyun-partner-tag {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 16px 18px;
            transition: border-color 0.25s ease, transform 0.25s ease;
        }
        .kaiyun-partner-tag:hover {
            border-color: rgba(166, 249, 68, 0.4);
            transform: translateY(-3px);
        }
        .kaiyun-partner-tag h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .kaiyun-partner-tag h4::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--kaiyun-green);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(166, 249, 68, 0.4);
        }
        .kaiyun-partner-tag p {
            font-size: 13px;
            color: var(--kaiyun-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== CTA 入口 ===== */
        .kaiyun-cta-section {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .kaiyun-cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(166, 249, 68, 0.08), transparent 65%);
            pointer-events: none;
        }
        .kaiyun-cta-section h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--kaiyun-white);
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }
        .kaiyun-cta-section p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            margin: 0 auto 28px;
            max-width: 600px;
        }
        .kaiyun-cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .kaiyun-faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .kaiyun-faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .kaiyun-faq-item.open {
            border-color: rgba(166, 249, 68, 0.4);
        }
        .kaiyun-faq-item.open .kaiyun-faq-answer {
            max-height: 500px;
            opacity: 1;
            padding: 16px 20px 20px;
            border-left: 3px solid var(--kaiyun-green);
            background: rgba(166, 249, 68, 0.06);
        }
        .kaiyun-faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--kaiyun-white);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            gap: 16px;
            transition: background-color 0.25s ease;
        }
        .kaiyun-faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .kaiyun-faq-question .kaiyun-faq-icon {
            font-size: 22px;
            font-weight: 400;
            color: var(--kaiyun-green);
            transition: transform 0.28s ease;
            flex-shrink: 0;
            font-family: var(--kaiyun-font-mono);
        }
        .kaiyun-faq-item.open .kaiyun-faq-question .kaiyun-faq-icon {
            transform: rotate(45deg);
        }
        .kaiyun-faq-answer {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
            font-size: 15px;
            color: var(--kaiyun-silver);
            line-height: 1.85;
            padding: 0 20px;
        }

        /* ===== 页脚 ===== */
        .kaiyun-footer {
            background: var(--kaiyun-bg-secondary);
            border-top: 1px solid var(--kaiyun-border);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .kaiyun-footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .kaiyun-footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 14px;
        }
        .kaiyun-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .kaiyun-footer-links li {
            padding: 5px 0;
        }
        .kaiyun-footer-links a {
            color: var(--kaiyun-silver);
            font-size: 14px;
            transition: color 0.25s ease;
        }
        .kaiyun-footer-links a:hover {
            color: var(--kaiyun-amber);
        }
        .kaiyun-footer-brand-text {
            font-size: 14px;
            color: var(--kaiyun-muted);
            line-height: 1.8;
            margin: 0 0 16px;
        }
        .kaiyun-footer-brand .kaiyun-logo {
            margin-bottom: 12px;
        }
        .kaiyun-footer-contact {
            font-size: 14px;
            color: var(--kaiyun-silver);
            line-height: 1.9;
        }
        .kaiyun-footer-contact span {
            color: var(--kaiyun-green);
        }
        .kaiyun-footer-bottom {
            border-top: 1px solid var(--kaiyun-border);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--kaiyun-muted);
        }
        .kaiyun-footer-bottom a {
            color: var(--kaiyun-muted);
        }
        .kaiyun-footer-bottom a:hover {
            color: var(--kaiyun-amber);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .kaiyun-hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .kaiyun-hero {
                min-height: auto;
                padding: 40px 0 48px;
            }
            .kaiyun-hero h1 {
                font-size: 34px;
            }
            .kaiyun-hero-databar {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-hero-databar-item:nth-child(2) {
                border-right: none;
            }
            .kaiyun-hero-databar-item:nth-child(1),
            .kaiyun-hero-databar-item:nth-child(2) {
                border-bottom: 1px solid var(--kaiyun-border);
            }
            .kaiyun-pricing-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .kaiyun-steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kaiyun-news-layout {
                grid-template-columns: 1fr;
            }
            .kaiyun-brand-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --kaiyun-section-gap: 64px;
            }
            .kaiyun-nav-links {
                display: none;
            }
            .kaiyun-nav-cta .kaiyun-btn-ghost {
                display: none;
            }
            .kaiyun-mobile-toggle {
                display: flex;
            }
            .kaiyun-mobile-menu.show {
                display: flex;
            }
            .kaiyun-hero h1 {
                font-size: 30px;
            }
            .kaiyun-hero-sub {
                font-size: 15px;
            }
            .kaiyun-hero-cta {
                flex-direction: column;
                align-items: stretch;
            }
            .kaiyun-hero-cta .kaiyun-btn {
                width: 100%;
            }
            .kaiyun-benefits-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-benefit-card-featured {
                grid-row: auto;
            }
            .kaiyun-section-head h2 {
                font-size: 24px;
            }
            .kaiyun-cta-section {
                padding: 36px 20px;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .kaiyun-hero-databar {
                grid-template-columns: 1fr;
            }
            .kaiyun-hero-databar-item {
                border-right: none;
                border-bottom: 1px solid var(--kaiyun-border);
            }
            .kaiyun-hero-databar-item:last-child {
                border-bottom: none;
            }
            .kaiyun-hero-databar-item:nth-child(1),
            .kaiyun-hero-databar-item:nth-child(2) {
                border-bottom: 1px solid var(--kaiyun-border);
            }
            .kaiyun-steps-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-reviews-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-partner-tags {
                grid-template-columns: 1fr;
            }
            .kaiyun-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .kaiyun-hero-panel {
                padding: 20px;
            }
            .kaiyun-hero-stat-value {
                font-size: 18px;
            }
        }

        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category1 */
:root {
            --kaiyun-bg: #0A0F0E;
            --kaiyun-bg-secondary: #0E1512;
            --kaiyun-panel: #111A17;
            --kaiyun-panel-light: #16211D;
            --kaiyun-green: #A6F944;
            --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
            --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
            --kaiyun-amber: #FF8A3D;
            --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
            --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
            --kaiyun-white: #F4F7F2;
            --kaiyun-silver: #C9D2CC;
            --kaiyun-muted: #88938E;
            --kaiyun-border: rgba(255, 255, 255, 0.08);
            --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
            --kaiyun-radius-sm: 4px;
            --kaiyun-radius-md: 8px;
            --kaiyun-radius-lg: 12px;
            --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
            --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
            --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
            --kaiyun-section-gap: 72px;
            --kaiyun-container-max: 1200px;
            --kaiyun-nav-height: 72px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--kaiyun-bg);
        }

        body {
            margin: 0;
            font-family: var(--kaiyun-font-family);
            background-color: var(--kaiyun-bg);
            color: var(--kaiyun-white);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--kaiyun-silver);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }

        a:hover {
            color: var(--kaiyun-amber);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .kaiyun-container {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .kaiyun-grid-bg {
            position: relative;
            background-color: var(--kaiyun-bg);
        }

        .kaiyun-grid-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 1;
        }

        .kaiyun-grid-bg > * {
            position: relative;
            z-index: 2;
        }

        /* ===== 导航 ===== */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 14, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            min-height: var(--kaiyun-nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .kaiyun-header.scrolled {
            box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
            background: rgba(10, 15, 14, 0.94);
        }

        .kaiyun-header .kaiyun-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--kaiyun-white);
            letter-spacing: 0.4px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .kaiyun-logo:hover {
            color: var(--kaiyun-green);
        }

        .kaiyun-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
                radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
                #111A17;
            border: 1px solid rgba(166, 249, 68, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            color: var(--kaiyun-green);
            letter-spacing: -0.5px;
            box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
            flex-shrink: 0;
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }

        .kaiyun-nav-links li {
            margin: 0;
        }

        .kaiyun-nav-links a {
            color: var(--kaiyun-silver);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color 0.25s ease;
        }

        .kaiyun-nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--kaiyun-green);
            transition: width 0.3s ease;
        }

        .kaiyun-nav-links a:hover {
            color: var(--kaiyun-white);
        }

        .kaiyun-nav-links a:hover::after {
            width: 100%;
        }

        .kaiyun-nav-links a.active {
            color: var(--kaiyun-green);
        }

        .kaiyun-nav-links a.active::after {
            width: 100%;
        }

        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: var(--kaiyun-radius-sm);
            font-weight: 600;
            font-size: 14px;
            line-height: 1.4;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            white-space: nowrap;
            min-height: 44px;
        }

        .kaiyun-btn-primary {
            background: var(--kaiyun-amber);
            color: #1A0E05;
            box-shadow: 0 4px 16px rgba(255, 138, 61, 0.25);
        }

        .kaiyun-btn-primary:hover {
            background: #FF9A5C;
            color: #1A0E05;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 138, 61, 0.4);
        }

        .kaiyun-btn-ghost {
            background: transparent;
            color: var(--kaiyun-white);
            border: 1px solid var(--kaiyun-border-medium);
        }

        .kaiyun-btn-ghost:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
            background: var(--kaiyun-green-soft);
        }

        .kaiyun-btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 38px;
        }

        .kaiyun-nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--kaiyun-border-medium);
            border-radius: var(--kaiyun-radius-sm);
            color: var(--kaiyun-white);
            font-size: 22px;
            width: 44px;
            height: 44px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        /* ===== 移动端导航 ===== */
        .kaiyun-mobile-menu {
            display: none;
            background: var(--kaiyun-bg-secondary);
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 16px 0;
        }

        .kaiyun-mobile-menu.open {
            display: block;
        }

        .kaiyun-mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-mobile-menu li a {
            display: block;
            padding: 12px 24px;
            color: var(--kaiyun-silver);
            font-size: 16px;
            font-weight: 500;
            border-left: 3px solid transparent;
        }

        .kaiyun-mobile-menu li a:hover,
        .kaiyun-mobile-menu li a.active {
            color: var(--kaiyun-white);
            border-left-color: var(--kaiyun-green);
            background: rgba(166, 249, 68, 0.06);
        }

        .kaiyun-mobile-menu .kaiyun-btn {
            margin: 12px 24px;
            display: flex;
        }

        /* ===== 内页Hero ===== */
        .kaiyun-page-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
            padding: 60px 0 50px;
        }

        .kaiyun-page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 14, 0.75) 0%, rgba(10, 15, 14, 0.88) 60%, rgba(10, 15, 14, 0.98) 100%);
            z-index: -1;
        }

        .kaiyun-page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.05) 1px, transparent 1px);
            background-size: 44px 44px;
            z-index: -1;
        }

        .kaiyun-page-hero .kaiyun-container {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .kaiyun-page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 20px;
            background: rgba(166, 249, 68, 0.1);
            border: 1px solid rgba(166, 249, 68, 0.3);
            color: var(--kaiyun-green);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            align-self: flex-start;
        }

        .kaiyun-page-hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--kaiyun-green);
            animation: kaiyun-pulse 1.6s ease-in-out infinite;
        }

        @keyframes kaiyun-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(166, 249, 68, 0.5);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(166, 249, 68, 0);
            }
        }

        .kaiyun-page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            margin: 0;
            color: var(--kaiyun-white);
            line-height: 1.25;
            letter-spacing: -0.5px;
            max-width: 780px;
        }

        .kaiyun-page-hero h1 .highlight {
            color: var(--kaiyun-green);
        }

        .kaiyun-page-hero-desc {
            font-size: 17px;
            color: var(--kaiyun-silver);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }

        .kaiyun-page-hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .kaiyun-page-hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .kaiyun-page-hero-stat .num {
            font-size: 28px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: var(--kaiyun-amber);
            letter-spacing: -0.5px;
        }

        .kaiyun-page-hero-stat .label {
            font-size: 13px;
            color: var(--kaiyun-muted);
        }

        /* ===== 资讯列表板块 ===== */
        .kaiyun-section {
            padding: 64px 0;
        }

        .kaiyun-section-head {
            margin-bottom: 40px;
        }

        .kaiyun-section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 8px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kaiyun-section-head h2::before {
            content: "";
            width: 4px;
            height: 26px;
            background: var(--kaiyun-green);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .kaiyun-section-head p {
            color: var(--kaiyun-muted);
            font-size: 15px;
            margin: 0;
            max-width: 680px;
        }

        .kaiyun-news-filter {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .kaiyun-filter-chip {
            padding: 8px 18px;
            border-radius: 20px;
            background: transparent;
            border: 1px solid var(--kaiyun-border-medium);
            color: var(--kaiyun-silver);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.25s ease;
            min-height: 38px;
        }

        .kaiyun-filter-chip:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-white);
            background: rgba(166, 249, 68, 0.06);
        }

        .kaiyun-filter-chip.active {
            background: var(--kaiyun-green-soft);
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
        }

        .kaiyun-news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
        }

        .kaiyun-news-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 22px 24px;
            background: rgba(255, 255, 255, 0.02);
            border-bottom: 1px solid var(--kaiyun-border);
            transition: background-color 0.3s ease;
            cursor: pointer;
        }

        .kaiyun-news-item:last-child {
            border-bottom: none;
        }

        .kaiyun-news-item:hover {
            background: rgba(166, 249, 68, 0.05);
        }

        .kaiyun-news-date {
            flex-shrink: 0;
            width: 72px;
            text-align: center;
            background: var(--kaiyun-panel-light);
            border-radius: var(--kaiyun-radius-sm);
            padding: 10px 8px;
            border: 1px solid var(--kaiyun-border);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .kaiyun-news-date .day {
            font-size: 24px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: var(--kaiyun-amber);
            line-height: 1.2;
        }

        .kaiyun-news-date .month {
            font-size: 12px;
            color: var(--kaiyun-muted);
            letter-spacing: 0.5px;
        }

        .kaiyun-news-body {
            flex: 1;
            min-width: 0;
        }

        .kaiyun-news-category-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            background: var(--kaiyun-green-soft);
            color: var(--kaiyun-green);
            margin-bottom: 8px;
        }

        .kaiyun-news-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--kaiyun-white);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .kaiyun-news-body h3:hover {
            color: var(--kaiyun-green);
        }

        .kaiyun-news-body p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .kaiyun-news-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            border-radius: var(--kaiyun-radius-sm);
            overflow: hidden;
            border: 1px solid var(--kaiyun-border);
        }

        .kaiyun-news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .kaiyun-news-item:hover .kaiyun-news-thumb img {
            transform: scale(1.08);
        }

        /* ===== 数据看板 ===== */
        .kaiyun-data-strip {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-data-strip::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--kaiyun-green), var(--kaiyun-amber), var(--kaiyun-green));
            opacity: 0.6;
        }

        .kaiyun-data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .kaiyun-data-strip-item {
            text-align: center;
            padding: 12px;
            border-right: 1px solid var(--kaiyun-border);
        }

        .kaiyun-data-strip-item:last-child {
            border-right: none;
        }

        .kaiyun-data-strip-item .num {
            font-size: 36px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: var(--kaiyun-green);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .kaiyun-data-strip-item .label {
            font-size: 14px;
            color: var(--kaiyun-muted);
            margin-top: 4px;
        }

        /* ===== 资讯摘要模块 ===== */
        .kaiyun-highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 32px;
        }

        .kaiyun-highlight-card {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

        .kaiyun-highlight-card:hover {
            border-color: var(--kaiyun-green);
            box-shadow: var(--kaiyun-shadow-glow);
        }

        .kaiyun-highlight-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--kaiyun-radius-sm);
            background: var(--kaiyun-green-soft);
            border: 1px solid rgba(166, 249, 68, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--kaiyun-green);
            font-size: 20px;
            flex-shrink: 0;
        }

        .kaiyun-highlight-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--kaiyun-white);
            margin: 0 0 6px;
        }

        .kaiyun-highlight-card p {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .kaiyun-faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .kaiyun-faq-item {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .kaiyun-faq-item:hover {
            border-color: var(--kaiyun-border-medium);
        }

        .kaiyun-faq-question {
            width: 100%;
            padding: 18px 20px;
            background: transparent;
            border: none;
            color: var(--kaiyun-white);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            text-align: left;
            min-height: 54px;
            transition: all 0.3s ease;
        }

        .kaiyun-faq-question .icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--kaiyun-panel-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--kaiyun-green);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .kaiyun-faq-item.open .kaiyun-faq-question .icon {
            transform: rotate(45deg);
            background: var(--kaiyun-green-soft);
        }

        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            border-left: 3px solid transparent;
        }

        .kaiyun-faq-item.open .kaiyun-faq-answer {
            max-height: 300px;
            border-left-color: var(--kaiyun-green);
        }

        .kaiyun-faq-answer p {
            padding: 0 20px 18px 20px;
            margin: 0;
            color: var(--kaiyun-silver);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .kaiyun-cta-section {
            padding: 64px 0;
            background: linear-gradient(180deg, var(--kaiyun-bg) 0%, var(--kaiyun-bg-secondary) 100%);
        }

        .kaiyun-cta-panel {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-cta-panel::before {
            content: "";
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(166, 249, 68, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .kaiyun-cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 12px;
        }

        .kaiyun-cta-panel p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            margin: 0 0 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .kaiyun-cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .kaiyun-footer {
            background: var(--kaiyun-bg-secondary);
            border-top: 1px solid var(--kaiyun-border);
            padding: 48px 0 24px;
        }

        .kaiyun-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .kaiyun-footer-brand-text {
            font-size: 14px;
            color: var(--kaiyun-muted);
            line-height: 1.7;
            margin: 12px 0 0;
            max-width: 360px;
        }

        .kaiyun-footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--kaiyun-white);
            margin: 0 0 14px;
        }

        .kaiyun-footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-footer-links li {
            margin-bottom: 8px;
        }

        .kaiyun-footer-links a {
            color: var(--kaiyun-muted);
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .kaiyun-footer-links a:hover {
            color: var(--kaiyun-amber);
        }

        .kaiyun-footer-contact {
            font-size: 14px;
            color: var(--kaiyun-muted);
            line-height: 1.8;
            margin: 0;
        }

        .kaiyun-footer-contact span {
            color: var(--kaiyun-silver);
            font-weight: 500;
        }

        .kaiyun-footer-bottom {
            border-top: 1px solid var(--kaiyun-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--kaiyun-muted);
        }

        .kaiyun-footer-bottom a {
            color: var(--kaiyun-muted);
        }

        .kaiyun-footer-bottom a:hover {
            color: var(--kaiyun-amber);
        }

        /* ===== 加载更多 ===== */
        .kaiyun-load-more {
            text-align: center;
            margin-top: 32px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .kaiyun-nav-links {
                gap: 16px;
            }
            .kaiyun-nav-links a {
                font-size: 13px;
            }
            .kaiyun-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .kaiyun-data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .kaiyun-data-strip-item {
                border-right: none;
                border-bottom: 1px solid var(--kaiyun-border);
                padding-bottom: 16px;
            }
            .kaiyun-data-strip-item:nth-child(3),
            .kaiyun-data-strip-item:nth-child(4) {
                border-bottom: none;
            }
            .kaiyun-highlight-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --kaiyun-section-gap: 48px;
                --kaiyun-nav-height: 60px;
            }
            .kaiyun-nav-links {
                display: none;
            }
            .kaiyun-nav-cta .kaiyun-btn-ghost {
                display: none;
            }
            .kaiyun-nav-toggle {
                display: flex;
            }
            .kaiyun-page-hero {
                min-height: 320px;
                padding: 36px 0 32px;
            }
            .kaiyun-page-hero h1 {
                font-size: 28px;
            }
            .kaiyun-page-hero-desc {
                font-size: 15px;
            }
            .kaiyun-page-hero-stats {
                gap: 20px;
            }
            .kaiyun-page-hero-stat .num {
                font-size: 22px;
            }
            .kaiyun-news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .kaiyun-news-date {
                width: 60px;
                flex-direction: row;
                align-items: baseline;
                gap: 6px;
            }
            .kaiyun-news-date .day {
                font-size: 20px;
            }
            .kaiyun-news-thumb {
                width: 100%;
                height: 160px;
            }
            .kaiyun-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .kaiyun-cta-panel {
                padding: 28px 20px;
            }
            .kaiyun-section {
                padding: 48px 0;
            }
            .kaiyun-section-head h2 {
                font-size: 24px;
            }
            .kaiyun-data-strip-grid {
                grid-template-columns: 1fr;
            }
            .kaiyun-data-strip-item {
                border-bottom: 1px solid var(--kaiyun-border);
                border-right: none;
                padding-bottom: 12px;
            }
            .kaiyun-data-strip-item:last-child {
                border-bottom: none;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .kaiyun-page-hero h1 {
                font-size: 24px;
            }
            .kaiyun-page-hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            .kaiyun-btn {
                padding: 10px 16px;
                font-size: 13px;
            }
            .kaiyun-cta-actions {
                flex-direction: column;
            }
            .kaiyun-cta-actions .kaiyun-btn {
                width: 100%;
            }
            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --kaiyun-bg: #0A0F0E;
            --kaiyun-bg-secondary: #0E1512;
            --kaiyun-panel: #111A17;
            --kaiyun-panel-light: #16211D;
            --kaiyun-green: #A6F944;
            --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
            --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
            --kaiyun-amber: #FF8A3D;
            --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
            --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
            --kaiyun-white: #F4F7F2;
            --kaiyun-silver: #C9D2CC;
            --kaiyun-muted: #88938E;
            --kaiyun-border: rgba(255, 255, 255, 0.08);
            --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
            --kaiyun-radius-sm: 4px;
            --kaiyun-radius-md: 8px;
            --kaiyun-radius-lg: 12px;
            --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
            --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
            --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
            --kaiyun-section-gap: 80px;
            --kaiyun-container-max: 1200px;
            --kaiyun-nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--kaiyun-bg);
        }

        body {
            margin: 0;
            font-family: var(--kaiyun-font-family);
            background-color: var(--kaiyun-bg);
            color: var(--kaiyun-white);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--kaiyun-silver);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
        }

        a:hover {
            color: var(--kaiyun-amber);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .kaiyun-container {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 底纹网格背景 ===== */
        .kaiyun-grid-bg {
            position: relative;
            background-color: var(--kaiyun-bg);
        }

        .kaiyun-grid-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 1;
        }

        .kaiyun-grid-bg > * {
            position: relative;
            z-index: 2;
        }

        /* ===== 导航 ===== */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 14, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            min-height: var(--kaiyun-nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .kaiyun-header.scrolled {
            box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
            background: rgba(10, 15, 14, 0.94);
        }

        .kaiyun-header .kaiyun-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--kaiyun-white);
            letter-spacing: 0.4px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .kaiyun-logo:hover {
            color: var(--kaiyun-green);
        }

        .kaiyun-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
                radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
                #111A17;
            border: 1px solid rgba(166, 249, 68, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            color: var(--kaiyun-green);
            letter-spacing: -0.5px;
            box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 22px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }

        .kaiyun-nav-links li {
            margin: 0;
        }

        .kaiyun-nav-links a {
            color: var(--kaiyun-silver);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color 0.25s ease;
        }

        .kaiyun-nav-links a:hover {
            color: var(--kaiyun-white);
        }

        .kaiyun-nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--kaiyun-green);
            transition: width 0.3s ease;
        }

        .kaiyun-nav-links a:hover::after,
        .kaiyun-nav-links a.active::after {
            width: 100%;
        }

        .kaiyun-nav-links a.active {
            color: var(--kaiyun-white);
            font-weight: 600;
        }

        .kaiyun-nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .kaiyun-btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 18px;
            border: 1px solid var(--kaiyun-border-medium);
            border-radius: var(--kaiyun-radius-sm);
            color: var(--kaiyun-silver);
            font-size: 14px;
            font-weight: 500;
            background: transparent;
            white-space: nowrap;
            transition: border-color 0.25s ease, color 0.25s ease;
        }

        .kaiyun-btn-ghost:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
        }

        .kaiyun-btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border: none;
            border-radius: var(--kaiyun-radius-sm);
            background: var(--kaiyun-amber);
            color: #1A1208;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            white-space: nowrap;
            transition: background-color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
        }

        .kaiyun-btn-primary:hover {
            background: #FF9D5C;
            color: #1A1208;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255, 138, 61, 0.35);
        }

        .kaiyun-hamburger {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-shrink: 0;
        }

        .kaiyun-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--kaiyun-white);
            margin: 5px 0;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        /* ===== 内页 Hero ===== */
        .kaiyun-page-hero {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
            overflow: hidden;
        }

        .kaiyun-page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 14, 0.78);
            z-index: 1;
        }

        .kaiyun-page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 2;
            pointer-events: none;
        }

        .kaiyun-page-hero .kaiyun-container {
            position: relative;
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .kaiyun-page-hero-text {
            flex: 1;
        }

        .kaiyun-page-hero-text h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--kaiyun-white);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }

        .kaiyun-page-hero-text h1 .kaiyun-highlight {
            color: var(--kaiyun-green);
        }

        .kaiyun-page-hero-text p {
            font-size: 17px;
            color: var(--kaiyun-silver);
            margin: 0 0 24px;
            max-width: 600px;
            line-height: 1.9;
        }

        .kaiyun-page-hero-badge {
            display: inline-block;
            padding: 4px 14px;
            border: 1px solid rgba(166, 249, 68, 0.4);
            border-radius: 100px;
            font-size: 12px;
            color: var(--kaiyun-green);
            background: rgba(166, 249, 68, 0.08);
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .kaiyun-page-hero-panel {
            background: rgba(17, 26, 23, 0.85);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 24px 28px;
            min-width: 280px;
            box-shadow: var(--kaiyun-shadow-md);
            backdrop-filter: blur(8px);
        }

        .kaiyun-page-hero-panel h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--kaiyun-silver);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }

        .kaiyun-hero-stat {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .kaiyun-hero-stat:last-child {
            border-bottom: none;
        }

        .kaiyun-hero-stat-label {
            font-size: 13px;
            color: var(--kaiyun-muted);
        }

        .kaiyun-hero-stat-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--kaiyun-green);
            font-family: var(--kaiyun-font-mono);
        }

        /* ===== 板块标题 ===== */
        .kaiyun-section {
            padding: var(--kaiyun-section-gap) 0;
        }

        .kaiyun-section-header {
            margin-bottom: 36px;
        }

        .kaiyun-section-header .kaiyun-section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--kaiyun-amber);
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .kaiyun-section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0;
            line-height: 1.3;
            position: relative;
            display: inline-block;
        }

        .kaiyun-section-header h2::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 48px;
            height: 3px;
            background: var(--kaiyun-green);
            border-radius: 2px;
        }

        .kaiyun-section-header p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            margin: 14px 0 0;
            max-width: 720px;
            line-height: 1.9;
        }

        /* ===== 服务卡片（2大2小非对称） ===== */
        .kaiyun-service-asym {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .kaiyun-service-card-large {
            grid-column: span 8;
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
            position: relative;
        }

        .kaiyun-service-card-small {
            grid-column: span 4;
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            overflow: hidden;
            box-shadow: var(--kaiyun-shadow-sm);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
            position: relative;
        }

        .kaiyun-service-card-large:hover,
        .kaiyun-service-card-small:hover {
            transform: translateY(-6px);
            box-shadow: var(--kaiyun-shadow-md), var(--kaiyun-shadow-glow);
            border-color: var(--kaiyun-green-glow);
        }

        .kaiyun-service-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .kaiyun-service-card-small .kaiyun-service-card-img {
            aspect-ratio: 16 / 10;
        }

        .kaiyun-service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .kaiyun-service-card-large:hover .kaiyun-service-card-img img,
        .kaiyun-service-card-small:hover .kaiyun-service-card-img img {
            transform: scale(1.04);
        }

        .kaiyun-service-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(10, 15, 14, 0.7) 100%);
            pointer-events: none;
        }

        .kaiyun-service-card-body {
            padding: 24px 28px;
        }

        .kaiyun-service-card-body .kaiyun-card-number {
            font-family: var(--kaiyun-font-mono);
            font-size: 13px;
            font-weight: 600;
            color: var(--kaiyun-green);
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: block;
        }

        .kaiyun-service-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 10px;
            line-height: 1.35;
        }

        .kaiyun-service-card-body p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0 0 16px;
            line-height: 1.8;
        }

        .kaiyun-service-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--kaiyun-amber);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.25s ease;
        }

        .kaiyun-service-card-link:hover {
            color: var(--kaiyun-green);
        }

        /* ===== 数据看板 ===== */
        .kaiyun-data-board {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 36px 32px;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-data-board::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.03) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }

        .kaiyun-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
            z-index: 1;
        }

        .kaiyun-data-item {
            text-align: center;
            padding: 16px 20px;
            border-right: 1px solid var(--kaiyun-border);
        }

        .kaiyun-data-item:last-child {
            border-right: none;
        }

        .kaiyun-data-item .kaiyun-data-value {
            font-size: 40px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: var(--kaiyun-green);
            line-height: 1.2;
            margin-bottom: 6px;
            text-shadow: 0 0 20px rgba(166, 249, 68, 0.3);
        }

        .kaiyun-data-item .kaiyun-data-label {
            font-size: 14px;
            color: var(--kaiyun-silver);
        }

        /* ===== 适用场景 ===== */
        .kaiyun-scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .kaiyun-scene-card {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px 22px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        .kaiyun-scene-card:hover {
            border-color: var(--kaiyun-green-glow);
            box-shadow: var(--kaiyun-shadow-glow);
            transform: translateY(-3px);
        }

        .kaiyun-scene-card .kaiyun-scene-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--kaiyun-green-soft);
            border: 1px solid rgba(166, 249, 68, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--kaiyun-green);
            margin-bottom: 14px;
        }

        .kaiyun-scene-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 8px;
        }

        .kaiyun-scene-card p {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.8;
        }

        /* ===== 流程 ===== */
        .kaiyun-process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: process-step;
        }

        .kaiyun-process-step {
            position: relative;
            padding-top: 48px;
            counter-increment: process-step;
        }

        .kaiyun-process-step::before {
            content: counter(process-step, decimal-leading-zero);
            position: absolute;
            top: 0;
            left: 0;
            font-size: 42px;
            font-weight: 800;
            font-family: var(--kaiyun-font-mono);
            color: rgba(166, 249, 68, 0.25);
            letter-spacing: -2px;
        }

        .kaiyun-process-step h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 8px;
        }

        .kaiyun-process-step p {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.8;
        }

        .kaiyun-process-step .kaiyun-process-line {
            position: absolute;
            top: 18px;
            left: 60px;
            right: -8px;
            height: 2px;
            border-top: 2px dashed rgba(255, 138, 61, 0.4);
        }

        .kaiyun-process-step:last-child .kaiyun-process-line {
            display: none;
        }

        /* ===== FAQ ===== */
        .kaiyun-faq-wrap {
            max-width: 800px;
        }

        .kaiyun-faq-item {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .kaiyun-faq-item:hover {
            border-color: var(--kaiyun-border-medium);
        }

        .kaiyun-faq-item.is-active {
            border-color: var(--kaiyun-green-glow);
            box-shadow: var(--kaiyun-shadow-glow);
        }

        .kaiyun-faq-question {
            background: transparent;
            border: none;
            padding: 18px 22px;
            width: 100%;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--kaiyun-white);
            font-size: 16px;
            font-weight: 600;
            transition: color 0.25s ease;
        }

        .kaiyun-faq-question:hover {
            color: var(--kaiyun-green);
        }

        .kaiyun-faq-plus {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            transition: transform 0.3s ease;
        }

        .kaiyun-faq-plus::before,
        .kaiyun-faq-plus::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--kaiyun-amber);
            transition: transform 0.3s ease, background-color 0.3s ease;
        }

        .kaiyun-faq-plus::before {
            width: 14px;
            height: 2px;
            transform: translate(-50%, -50%);
        }

        .kaiyun-faq-plus::after {
            width: 2px;
            height: 14px;
            transform: translate(-50%, -50%);
        }

        .kaiyun-faq-item.is-active .kaiyun-faq-plus::after {
            transform: translate(-50%, -50%) rotate(90deg);
        }

        .kaiyun-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .kaiyun-faq-answer-inner {
            padding: 0 22px 20px 22px;
            border-left: 3px solid var(--kaiyun-green);
            margin-left: 22px;
        }

        .kaiyun-faq-answer-inner p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 1.9;
        }

        /* ===== CTA ===== */
        .kaiyun-cta-section {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .kaiyun-cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(166, 249, 68, 0.08), transparent 70%);
            pointer-events: none;
        }

        .kaiyun-cta-section::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 138, 61, 0.08), transparent 70%);
            pointer-events: none;
        }

        .kaiyun-cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .kaiyun-cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 12px;
        }

        .kaiyun-cta-content p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            margin: 0 auto 24px;
            max-width: 560px;
            line-height: 1.8;
        }

        .kaiyun-cta-btns {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== 加载更多 ===== */
        .kaiyun-load-more {
            text-align: center;
            padding: 8px 0 4px;
        }

        .kaiyun-btn-load-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border: 1px solid var(--kaiyun-amber);
            border-radius: var(--kaiyun-radius-sm);
            color: var(--kaiyun-amber);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            cursor: pointer;
            transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
        }

        .kaiyun-btn-load-more:hover {
            background: rgba(255, 138, 61, 0.12);
            color: var(--kaiyun-white);
            box-shadow: 0 4px 20px rgba(255, 138, 61, 0.2);
        }

        /* ===== 页脚 ===== */
        .kaiyun-footer {
            background: var(--kaiyun-bg-secondary);
            border-top: 1px solid var(--kaiyun-border);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .kaiyun-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .kaiyun-footer-brand-text {
            font-size: 14px;
            color: var(--kaiyun-muted);
            margin: 12px 0 0;
            line-height: 1.8;
            max-width: 320px;
        }

        .kaiyun-footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 14px;
        }

        .kaiyun-footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .kaiyun-footer-links li {
            margin-bottom: 8px;
        }

        .kaiyun-footer-links a {
            font-size: 14px;
            color: var(--kaiyun-silver);
            transition: color 0.25s ease;
        }

        .kaiyun-footer-links a:hover {
            color: var(--kaiyun-amber);
        }

        .kaiyun-footer-contact {
            font-size: 14px;
            color: var(--kaiyun-silver);
            margin: 0;
            line-height: 2;
        }

        .kaiyun-footer-contact span {
            color: var(--kaiyun-white);
            font-weight: 600;
        }

        .kaiyun-footer-bottom {
            border-top: 1px solid var(--kaiyun-border);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 20px;
            font-size: 12px;
            color: var(--kaiyun-muted);
        }

        .kaiyun-footer-bottom a {
            color: var(--kaiyun-muted);
        }

        .kaiyun-footer-bottom a:hover {
            color: var(--kaiyun-amber);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --kaiyun-section-gap: 56px;
            }

            .kaiyun-page-hero-text h1 {
                font-size: 32px;
            }

            .kaiyun-page-hero .kaiyun-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
            }

            .kaiyun-page-hero-panel {
                min-width: auto;
                width: 100%;
            }

            .kaiyun-data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .kaiyun-data-item {
                border-right: none;
                border-bottom: 1px solid var(--kaiyun-border);
            }

            .kaiyun-data-item:nth-child(odd) {
                border-right: 1px solid var(--kaiyun-border);
            }

            .kaiyun-data-item:nth-child(n+3) {
                border-bottom: none;
            }

            .kaiyun-scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .kaiyun-process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }

            .kaiyun-process-step .kaiyun-process-line {
                display: none;
            }

            .kaiyun-footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .kaiyun-nav-links {
                display: none;
                position: absolute;
                top: var(--kaiyun-nav-height);
                left: 0;
                right: 0;
                background: rgba(10, 15, 14, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--kaiyun-border);
                gap: 4px;
            }

            .kaiyun-nav-links.open {
                display: flex;
            }

            .kaiyun-nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--kaiyun-border);
            }

            .kaiyun-nav-links li:last-child a {
                border-bottom: none;
            }

            .kaiyun-nav-cta-group .kaiyun-btn-ghost {
                display: none;
            }

            .kaiyun-hamburger {
                display: block;
            }

            .kaiyun-service-card-large,
            .kaiyun-service-card-small {
                grid-column: span 12;
            }

            .kaiyun-scene-grid {
                grid-template-columns: 1fr;
            }

            .kaiyun-process-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .kaiyun-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .kaiyun-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .kaiyun-page-hero {
                min-height: 340px;
            }

            .kaiyun-page-hero-text h1 {
                font-size: 28px;
            }

            .kaiyun-page-hero-text p {
                font-size: 15px;
            }

            .kaiyun-section-header h2 {
                font-size: 24px;
            }

            .kaiyun-data-item .kaiyun-data-value {
                font-size: 30px;
            }

            .kaiyun-cta-section {
                padding: 32px 24px;
            }

            .kaiyun-cta-content h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --kaiyun-section-gap: 40px;
            }

            .kaiyun-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .kaiyun-data-grid {
                grid-template-columns: 1fr;
            }

            .kaiyun-data-item {
                border-right: none !important;
                border-bottom: 1px solid var(--kaiyun-border);
                padding: 14px;
            }

            .kaiyun-data-item:last-child {
                border-bottom: none;
            }

            .kaiyun-page-hero-text h1 {
                font-size: 24px;
            }

            .kaiyun-service-card-body {
                padding: 18px 18px;
            }

            .kaiyun-service-card-body h3 {
                font-size: 18px;
            }

            .kaiyun-cta-btns {
                flex-direction: column;
                width: 100%;
            }

            .kaiyun-btn-primary,
            .kaiyun-btn-ghost {
                width: 100%;
            }

            .kaiyun-btn-load-more {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category4 */
:root {
        --kaiyun-bg: #0A0F0E;
        --kaiyun-bg-secondary: #0E1512;
        --kaiyun-panel: #111A17;
        --kaiyun-panel-light: #16211D;
        --kaiyun-green: #A6F944;
        --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
        --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
        --kaiyun-amber: #FF8A3D;
        --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
        --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
        --kaiyun-white: #F4F7F2;
        --kaiyun-silver: #C9D2CC;
        --kaiyun-muted: #88938E;
        --kaiyun-border: rgba(255, 255, 255, 0.08);
        --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
        --kaiyun-radius-sm: 4px;
        --kaiyun-radius-md: 8px;
        --kaiyun-radius-lg: 12px;
        --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
        --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
        --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
        --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
        --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
        --kaiyun-section-gap: 80px;
        --kaiyun-container-max: 1200px;
        --kaiyun-nav-height: 72px;
        --kaiyun-section-gap: 64px;
    }
    :root {
        --kaiyun-bg: #0A0F0E;
        --kaiyun-bg-secondary: #0E1512;
        --kaiyun-panel: #111A17;
        --kaiyun-panel-light: #16211D;
        --kaiyun-green: #A6F944;
        --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
        --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
        --kaiyun-amber: #FF8A3D;
        --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
        --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
        --kaiyun-white: #F4F7F2;
        --kaiyun-silver: #C9D2CC;
        --kaiyun-muted: #88938E;
        --kaiyun-border: rgba(255, 255, 255, 0.08);
        --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
        --kaiyun-radius-sm: 4px;
        --kaiyun-radius-md: 8px;
        --kaiyun-radius-lg: 12px;
        --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
        --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
        --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
        --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
        --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
        --kaiyun-section-gap: 80px;
        --kaiyun-container-max: 1200px;
        --kaiyun-nav-height: 72px;
    }
    *, *::before, *::after {
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
        background-color: var(--kaiyun-bg);
    }
    body {
        margin: 0;
        font-family: var(--kaiyun-font-family);
        background-color: var(--kaiyun-bg);
        color: var(--kaiyun-white);
        line-height: 1.8;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }
    a {
        color: var(--kaiyun-silver);
        text-decoration: none;
        transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }
    a:hover {
        color: var(--kaiyun-amber);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button, input, textarea, select {
        font-family: inherit;
        font-size: inherit;
    }
    .kaiyun-container {
        max-width: var(--kaiyun-container-max);
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .kaiyun-grid-bg {
        position: relative;
        background-color: var(--kaiyun-bg);
    }
    .kaiyun-grid-bg::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
        background-size: 48px 48px;
        pointer-events: none;
        z-index: 1;
    }
    .kaiyun-grid-bg > * {
        position: relative;
        z-index: 2;
    }
    .kaiyun-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(10, 15, 14, 0.88);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--kaiyun-border);
        min-height: var(--kaiyun-nav-height);
        display: flex;
        align-items: center;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }
    .kaiyun-header.scrolled {
        box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
        background: rgba(10, 15, 14, 0.94);
    }
    .kaiyun-header .kaiyun-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        gap: 24px;
    }
    .kaiyun-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--kaiyun-white);
        letter-spacing: 0.4px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .kaiyun-logo:hover {
        color: var(--kaiyun-green);
    }
    .kaiyun-logo-icon {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
            radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
            #111A17;
        border: 1px solid rgba(166, 249, 68, 0.35);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        font-weight: 800;
        color: var(--kaiyun-green);
        letter-spacing: -0.5px;
        box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
    }
    .kaiyun-nav-links {
        display: flex;
        align-items: center;
        gap: 26px;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: nowrap;
    }
    .kaiyun-nav-links li {
        margin: 0;
    }
    .kaiyun-nav-links a {
        color: var(--kaiyun-silver);
        font-size: 15px;
        font-weight: 500;
        padding: 8px 2px;
        position: relative;
        white-space: nowrap;
        transition: color 0.2s ease;
    }
    .kaiyun-nav-links a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 2px;
        width: 0;
        height: 2px;
        background: var(--kaiyun-green);
        transition: width 0.25s ease;
        box-shadow: 0 0 8px var(--kaiyun-green-glow);
    }
    .kaiyun-nav-links a:hover::after,
    .kaiyun-nav-links a.active::after {
        width: 100%;
    }
    .kaiyun-nav-links a.active {
        color: var(--kaiyun-white);
    }
    .kaiyun-nav-links a:hover {
        color: var(--kaiyun-white);
    }
    .kaiyun-nav-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .kaiyun-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-weight: 600;
        border-radius: var(--kaiyun-radius-sm);
        padding: 11px 22px;
        font-size: 15px;
        line-height: 1.4;
        cursor: pointer;
        border: 1px solid transparent;
        transition: all 0.25s ease;
        text-align: center;
        white-space: nowrap;
    }
    .kaiyun-btn-primary {
        background: var(--kaiyun-amber);
        color: var(--kaiyun-white);
        box-shadow: 0 4px 16px rgba(255, 138, 61, 0.3);
    }
    .kaiyun-btn-primary:hover {
        background: #ff9f5f;
        color: #fff;
        box-shadow: 0 8px 28px rgba(255, 138, 61, 0.45);
        transform: translateY(-2px);
    }
    .kaiyun-btn-ghost {
        background: transparent;
        border-color: var(--kaiyun-border-medium);
        color: var(--kaiyun-white);
    }
    .kaiyun-btn-ghost:hover {
        border-color: var(--kaiyun-green);
        color: var(--kaiyun-green);
        box-shadow: 0 0 16px rgba(166, 249, 68, 0.12);
    }
    .kaiyun-btn-sm {
        padding: 8px 16px;
        font-size: 14px;
    }
    .kaiyun-btn-lg {
        padding: 14px 30px;
        font-size: 16px;
    }
    .kaiyun-nav-toggle {
        display: none;
        background: none;
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        width: 42px;
        height: 42px;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;
        cursor: pointer;
        flex-shrink: 0;
    }
    .kaiyun-nav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--kaiyun-white);
        border-radius: 2px;
        transition: all 0.3s ease;
    }
    .kaiyun-mobile-menu {
        display: none;
        position: fixed;
        top: var(--kaiyun-nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 15, 14, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        z-index: 99;
        padding: 24px;
        flex-direction: column;
        gap: 12px;
        overflow-y: auto;
    }
    .kaiyun-mobile-menu.open {
        display: flex;
    }
    .kaiyun-mobile-menu a {
        font-size: 18px;
        padding: 12px 16px;
        border-bottom: 1px solid var(--kaiyun-border);
        color: var(--kaiyun-silver);
    }
    .kaiyun-mobile-menu a.active {
        color: var(--kaiyun-green);
    }
    .kaiyun-mobile-menu .kaiyun-btn {
        margin-top: 16px;
    }
    .kaiyun-hero {
        position: relative;
        min-height: 380px;
        display: flex;
        align-items: center;
        overflow: hidden;
        background: #0A0F0E;
        padding: 56px 0 48px;
    }
    .kaiyun-hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.35;
        z-index: 1;
    }
    .kaiyun-hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(10, 15, 14, 0.55) 0%, rgba(10, 15, 14, 0.7) 40%, rgba(10, 15, 14, 0.92) 100%);
        z-index: 2;
    }
    .kaiyun-hero-grid-overlay {
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(166, 249, 68, 0.06) 1px, transparent 1px),
            linear-gradient(90deg, rgba(166, 249, 68, 0.06) 1px, transparent 1px);
        background-size: 40px 40px;
        z-index: 3;
        pointer-events: none;
    }
    .kaiyun-hero-content {
        position: relative;
        z-index: 4;
        width: 100%;
    }
    .kaiyun-hero-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--kaiyun-green);
        background: var(--kaiyun-green-soft);
        border: 1px solid rgba(166, 249, 68, 0.25);
        border-radius: 100px;
        padding: 6px 16px;
        margin-bottom: 18px;
        letter-spacing: 1px;
        font-weight: 500;
    }
    .kaiyun-hero-tag::before {
        content: "";
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--kaiyun-green);
        box-shadow: 0 0 8px var(--kaiyun-green-glow);
    }
    .kaiyun-hero h1 {
        font-size: 38px;
        font-weight: 700;
        line-height: 1.25;
        margin: 0 0 16px;
        color: var(--kaiyun-white);
        letter-spacing: -0.5px;
        max-width: 720px;
    }
    .kaiyun-hero h1 .kaiyun-highlight {
        color: var(--kaiyun-green);
        text-shadow: 0 0 20px rgba(166, 249, 68, 0.35);
    }
    .kaiyun-hero p {
        font-size: 17px;
        color: var(--kaiyun-silver);
        max-width: 640px;
        margin: 0 0 28px;
        line-height: 1.85;
    }
    .kaiyun-hero-meta {
        display: flex;
        gap: 32px;
        flex-wrap: wrap;
        margin-top: 24px;
    }
    .kaiyun-hero-stat {
        display: flex;
        align-items: baseline;
        gap: 8px;
    }
    .kaiyun-hero-stat strong {
        font-size: 30px;
        font-weight: 700;
        color: var(--kaiyun-green);
        font-family: var(--kaiyun-font-mono);
        letter-spacing: -0.5px;
    }
    .kaiyun-hero-stat span {
        font-size: 14px;
        color: var(--kaiyun-muted);
    }
    .kaiyun-section {
        padding: 56px 0;
    }
    .kaiyun-section-alt {
        background: var(--kaiyun-bg-secondary);
    }
    .kaiyun-section-head {
        margin-bottom: 40px;
    }
    .kaiyun-section-head .kaiyun-section-kicker {
        font-size: 13px;
        color: var(--kaiyun-amber);
        letter-spacing: 2px;
        text-transform: uppercase;
        font-weight: 600;
        margin-bottom: 10px;
        display: block;
    }
    .kaiyun-section-head h2 {
        font-size: 28px;
        font-weight: 700;
        margin: 0 0 12px;
        color: var(--kaiyun-white);
        letter-spacing: -0.3px;
        line-height: 1.3;
    }
    .kaiyun-section-head p {
        font-size: 16px;
        color: var(--kaiyun-silver);
        margin: 0;
        max-width: 680px;
        line-height: 1.8;
    }
    /* 解决方案阶梯 */
    .kaiyun-solution-stairs {
        position: relative;
        padding: 20px 0 40px;
    }
    .kaiyun-solution-stairs::before {
        content: "";
        position: absolute;
        top: 0;
        bottom: 0;
        left: 50%;
        width: 2px;
        background: linear-gradient(180deg, transparent 0%, rgba(166, 249, 68, 0.25) 15%, rgba(166, 249, 68, 0.25) 85%, transparent 100%);
        transform: translateX(-50%);
    }
    .kaiyun-stair-item {
        position: relative;
        display: flex;
        align-items: flex-start;
        gap: 28px;
        margin-bottom: 36px;
        padding: 0 32px;
    }
    .kaiyun-stair-item:last-child {
        margin-bottom: 0;
    }
    .kaiyun-stair-item:nth-child(odd) {
        flex-direction: row;
    }
    .kaiyun-stair-item:nth-child(even) {
        flex-direction: row-reverse;
    }
    .kaiyun-stair-node {
        position: absolute;
        left: 50%;
        top: 14px;
        transform: translateX(-50%);
        width: 14px;
        height: 14px;
        border-radius: 50%;
        background: var(--kaiyun-amber);
        border: 3px solid var(--kaiyun-bg);
        box-shadow: 0 0 0 2px rgba(255, 138, 61, 0.4), 0 0 16px rgba(255, 138, 61, 0.35);
        z-index: 3;
    }
    .kaiyun-stair-card {
        flex: 1;
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        padding: 28px 28px 28px;
        transition: all 0.3s ease;
        position: relative;
        max-width: calc(50% - 56px);
    }
    .kaiyun-stair-item:nth-child(odd) .kaiyun-stair-card {
        margin-right: auto;
    }
    .kaiyun-stair-item:nth-child(even) .kaiyun-stair-card {
        margin-left: auto;
    }
    .kaiyun-stair-card:hover {
        border-color: rgba(166, 249, 68, 0.4);
        box-shadow: var(--kaiyun-shadow-glow);
        transform: translateY(-3px);
    }
    .kaiyun-stair-card.featured {
        border-color: rgba(166, 249, 68, 0.5);
        box-shadow: 0 0 32px rgba(166, 249, 68, 0.15);
    }
    .kaiyun-stair-card.featured::after {
        content: "主推方案";
        position: absolute;
        top: -12px;
        right: 20px;
        background: var(--kaiyun-green);
        color: #0A0F0E;
        font-size: 12px;
        font-weight: 700;
        padding: 3px 12px;
        border-radius: 100px;
        letter-spacing: 0.5px;
    }
    .kaiyun-stair-level {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 13px;
        color: var(--kaiyun-amber);
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 12px;
    }
    .kaiyun-stair-level .kaiyun-level-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: var(--kaiyun-amber-soft);
        border: 1px solid rgba(255, 138, 61, 0.35);
        font-size: 12px;
        color: var(--kaiyun-amber);
        font-family: var(--kaiyun-font-mono);
    }
    .kaiyun-stair-card h3 {
        font-size: 20px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 8px;
        letter-spacing: -0.2px;
    }
    .kaiyun-stair-card .kaiyun-stair-desc {
        font-size: 15px;
        color: var(--kaiyun-silver);
        line-height: 1.75;
        margin: 0 0 16px;
    }
    .kaiyun-stair-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 16px;
    }
    .kaiyun-stair-tags span {
        font-size: 12px;
        color: var(--kaiyun-muted);
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--kaiyun-border);
        border-radius: 100px;
        padding: 4px 12px;
    }
    .kaiyun-stair-scope {
        font-size: 13px;
        color: var(--kaiyun-muted);
        margin-bottom: 16px;
        padding-left: 14px;
        border-left: 2px solid var(--kaiyun-border-medium);
    }
    .kaiyun-stair-arrow {
        position: absolute;
        left: 50%;
        bottom: -32px;
        transform: translateX(-50%);
        font-size: 20px;
        color: var(--kaiyun-muted);
        z-index: 2;
    }
    .kaiyun-stair-item:last-child .kaiyun-stair-arrow {
        display: none;
    }
    /* 场景卡片 */
    .kaiyun-scene-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .kaiyun-scene-card {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        padding: 24px;
        transition: all 0.3s ease;
    }
    .kaiyun-scene-card:hover {
        border-color: rgba(166, 249, 68, 0.35);
        box-shadow: var(--kaiyun-shadow-glow);
        transform: translateY(-3px);
    }
    .kaiyun-scene-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: var(--kaiyun-radius-sm);
        background: var(--kaiyun-green-soft);
        border: 1px solid rgba(166, 249, 68, 0.25);
        margin-bottom: 14px;
        font-size: 20px;
        color: var(--kaiyun-green);
    }
    .kaiyun-scene-card h3 {
        font-size: 17px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 8px;
    }
    .kaiyun-scene-card p {
        font-size: 14px;
        color: var(--kaiyun-muted);
        line-height: 1.7;
        margin: 0;
    }
    /* 流程 */
    .kaiyun-process-flow {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        position: relative;
    }
    .kaiyun-process-step {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        padding: 22px 20px;
        text-align: center;
        transition: all 0.3s ease;
        position: relative;
    }
    .kaiyun-process-step:hover {
        border-color: rgba(255, 138, 61, 0.4);
        box-shadow: 0 0 20px rgba(255, 138, 61, 0.12);
        transform: translateY(-2px);
    }
    .kaiyun-process-step .kaiyun-step-num {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--kaiyun-amber-soft);
        color: var(--kaiyun-amber);
        font-weight: 700;
        font-size: 16px;
        margin: 0 auto 12px;
        border: 1px solid rgba(255, 138, 61, 0.3);
    }
    .kaiyun-process-step h3 {
        font-size: 16px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 8px;
    }
    .kaiyun-process-step p {
        font-size: 13px;
        color: var(--kaiyun-muted);
        margin: 0;
        line-height: 1.6;
    }
    /* 数据条 */
    .kaiyun-solution-stats {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        margin-top: 40px;
    }
    .kaiyun-stat-cell {
        text-align: center;
        padding: 20px;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
    }
    .kaiyun-stat-cell strong {
        display: block;
        font-size: 32px;
        font-weight: 700;
        color: var(--kaiyun-green);
        font-family: var(--kaiyun-font-mono);
        letter-spacing: -0.5px;
        margin-bottom: 4px;
    }
    .kaiyun-stat-cell span {
        font-size: 14px;
        color: var(--kaiyun-muted);
    }
    /* FAQ */
    .kaiyun-faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .kaiyun-faq-item {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        overflow: hidden;
        transition: all 0.3s ease;
    }
    .kaiyun-faq-item:hover {
        border-color: var(--kaiyun-border-medium);
    }
    .kaiyun-faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        background: none;
        border: none;
        padding: 20px 24px;
        cursor: pointer;
        color: var(--kaiyun-white);
        font-size: 16px;
        font-weight: 600;
        text-align: left;
        transition: color 0.2s ease;
        line-height: 1.5;
    }
    .kaiyun-faq-question:hover {
        color: var(--kaiyun-green);
    }
    .kaiyun-faq-question .kaiyun-faq-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        border: 1px solid var(--kaiyun-border-medium);
        font-size: 18px;
        color: var(--kaiyun-silver);
        flex-shrink: 0;
        transition: all 0.3s ease;
        font-weight: 400;
        line-height: 1;
    }
    .kaiyun-faq-item.open .kaiyun-faq-icon {
        transform: rotate(45deg);
        border-color: var(--kaiyun-green);
        color: var(--kaiyun-green);
    }
    .kaiyun-faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        border-left: 3px solid transparent;
    }
    .kaiyun-faq-item.open .kaiyun-faq-answer {
        max-height: 400px;
        border-left-color: var(--kaiyun-green);
        padding: 0 24px 20px;
    }
    .kaiyun-faq-answer p {
        margin: 0;
        font-size: 15px;
        color: var(--kaiyun-silver);
        line-height: 1.8;
    }
    /* CTA */
    .kaiyun-cta-section {
        background: var(--kaiyun-bg-secondary);
        border-top: 1px solid var(--kaiyun-border);
        border-bottom: 1px solid var(--kaiyun-border);
        padding: 64px 0;
        position: relative;
        overflow: hidden;
    }
    .kaiyun-cta-section::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 50% 0%, rgba(166, 249, 68, 0.08) 0%, transparent 60%),
            radial-gradient(ellipse at 80% 100%, rgba(255, 138, 61, 0.06) 0%, transparent 50%);
        pointer-events: none;
    }
    .kaiyun-cta-grid {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 40px;
        position: relative;
        z-index: 2;
        flex-wrap: wrap;
    }
    .kaiyun-cta-text h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 10px;
        letter-spacing: -0.3px;
    }
    .kaiyun-cta-text p {
        font-size: 15px;
        color: var(--kaiyun-silver);
        margin: 0;
        max-width: 520px;
        line-height: 1.8;
    }
    .kaiyun-cta-actions {
        display: flex;
        gap: 14px;
        flex-wrap: wrap;
    }
    /* Footer */
    .kaiyun-footer {
        background: #080C0B;
        border-top: 1px solid var(--kaiyun-border);
        padding: 48px 0 24px;
    }
    .kaiyun-footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 32px;
        margin-bottom: 32px;
        padding-bottom: 32px;
        border-bottom: 1px solid var(--kaiyun-border);
    }
    .kaiyun-footer-brand-text {
        font-size: 14px;
        color: var(--kaiyun-muted);
        line-height: 1.7;
        margin: 14px 0 0;
        max-width: 320px;
    }
    .kaiyun-footer h4 {
        font-size: 15px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 14px;
        letter-spacing: 0.5px;
    }
    .kaiyun-footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .kaiyun-footer-links a {
        font-size: 14px;
        color: var(--kaiyun-muted);
        transition: color 0.2s ease;
    }
    .kaiyun-footer-links a:hover {
        color: var(--kaiyun-amber);
    }
    .kaiyun-footer-contact {
        font-size: 14px;
        color: var(--kaiyun-muted);
        line-height: 1.9;
        margin: 0;
    }
    .kaiyun-footer-contact span {
        color: var(--kaiyun-silver);
    }
    .kaiyun-footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 12px 24px;
        align-items: center;
        justify-content: space-between;
        font-size: 13px;
        color: var(--kaiyun-muted);
    }
    .kaiyun-footer-bottom a {
        color: var(--kaiyun-muted);
    }
    .kaiyun-footer-bottom a:hover {
        color: var(--kaiyun-amber);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
        .kaiyun-nav-links {
            gap: 16px;
        }
        .kaiyun-nav-links a {
            font-size: 13px;
        }
        .kaiyun-scene-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .kaiyun-process-flow {
            grid-template-columns: repeat(2, 1fr);
        }
        .kaiyun-solution-stats {
            grid-template-columns: repeat(2, 1fr);
        }
        .kaiyun-stair-item,
        .kaiyun-stair-item:nth-child(odd),
        .kaiyun-stair-item:nth-child(even) {
            flex-direction: column;
            padding-left: 64px;
            padding-right: 0;
        }
        .kaiyun-stair-card,
        .kaiyun-stair-item:nth-child(odd) .kaiyun-stair-card,
        .kaiyun-stair-item:nth-child(even) .kaiyun-stair-card {
            max-width: 100%;
            margin: 0;
            width: 100%;
        }
        .kaiyun-solution-stairs::before {
            left: 22px;
            transform: none;
        }
        .kaiyun-stair-node {
            left: 22px;
            transform: translateX(-50%);
        }
        .kaiyun-stair-arrow {
            left: 22px;
            transform: translateX(-50%) rotate(90deg);
        }
    }
    @media (max-width: 768px) {
        .kaiyun-nav-links,
        .kaiyun-nav-actions .kaiyun-btn-ghost {
            display: none;
        }
        .kaiyun-nav-toggle {
            display: flex;
        }
        .kaiyun-nav-actions .kaiyun-btn-primary {
            display: inline-flex;
        }
        .kaiyun-hero h1 {
            font-size: 28px;
        }
        .kaiyun-hero {
            min-height: 300px;
            padding: 40px 0 36px;
        }
        .kaiyun-section {
            padding: 40px 0;
        }
        .kaiyun-section-head h2 {
            font-size: 24px;
        }
        .kaiyun-footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .kaiyun-footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .kaiyun-scene-grid {
            grid-template-columns: 1fr;
        }
        .kaiyun-process-flow {
            grid-template-columns: 1fr;
        }
        .kaiyun-stair-card {
            padding: 20px;
        }
        .kaiyun-cta-grid {
            flex-direction: column;
            align-items: flex-start;
            gap: 24px;
        }
        .kaiyun-hero-meta {
            gap: 16px;
        }
        .kaiyun-hero-stat strong {
            font-size: 24px;
        }
    }
    @media (max-width: 520px) {
        .kaiyun-hero h1 {
            font-size: 24px;
        }
        .kaiyun-hero p {
            font-size: 15px;
        }
        .kaiyun-nav-actions .kaiyun-btn-primary {
            padding: 8px 14px;
            font-size: 13px;
        }
        .kaiyun-container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .kaiyun-stair-item,
        .kaiyun-stair-item:nth-child(odd),
        .kaiyun-stair-item:nth-child(even) {
            padding-left: 48px;
        }
        .kaiyun-solution-stairs::before {
            left: 14px;
        }
        .kaiyun-stair-node {
            left: 14px;
            width: 10px;
            height: 10px;
            border-width: 2px;
        }
    }

/* roulang page: category3 */
:root {
            --kaiyun-bg: #0A0F0E;
            --kaiyun-bg-secondary: #0E1512;
            --kaiyun-panel: #111A17;
            --kaiyun-panel-light: #16211D;
            --kaiyun-green: #A6F944;
            --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
            --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
            --kaiyun-amber: #FF8A3D;
            --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
            --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
            --kaiyun-white: #F4F7F2;
            --kaiyun-silver: #C9D2CC;
            --kaiyun-muted: #88938E;
            --kaiyun-border: rgba(255, 255, 255, 0.08);
            --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
            --kaiyun-radius-sm: 4px;
            --kaiyun-radius-md: 8px;
            --kaiyun-radius-lg: 12px;
            --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
            --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
            --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
            --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
            --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
            --kaiyun-section-gap: 64px;
            --kaiyun-container-max: 1200px;
            --kaiyun-nav-height: 72px;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--kaiyun-bg);
        }

        body {
            margin: 0;
            font-family: var(--kaiyun-font-family);
            background-color: var(--kaiyun-bg);
            color: var(--kaiyun-white);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--kaiyun-silver);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }

        a:hover {
            color: var(--kaiyun-amber);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .kaiyun-container {
            max-width: var(--kaiyun-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .kaiyun-grid-bg {
            position: relative;
            background-color: var(--kaiyun-bg);
        }

        .kaiyun-grid-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 1;
        }

        .kaiyun-grid-bg > * {
            position: relative;
            z-index: 2;
        }

        /* ===== 导航 ===== */
        .kaiyun-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 14, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--kaiyun-border);
            min-height: var(--kaiyun-nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease, background-color 0.3s ease;
        }

        .kaiyun-header.scrolled {
            box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
            background: rgba(10, 15, 14, 0.94);
        }

        .kaiyun-header .kaiyun-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .kaiyun-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: var(--kaiyun-white);
            letter-spacing: 0.3px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .kaiyun-logo:hover {
            color: var(--kaiyun-green);
        }

        .kaiyun-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
                radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
                #111A17;
            border: 1px solid rgba(166, 249, 68, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            color: var(--kaiyun-green);
            letter-spacing: -0.5px;
            box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
            flex-shrink: 0;
        }

        .kaiyun-nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }

        .kaiyun-nav-links li {
            margin: 0;
        }

        .kaiyun-nav-links a {
            color: var(--kaiyun-silver);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            display: inline-block;
        }

        .kaiyun-nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--kaiyun-green);
            transition: width 0.25s ease;
        }

        .kaiyun-nav-links a:hover::after,
        .kaiyun-nav-links a.active::after {
            width: 100%;
        }

        .kaiyun-nav-links a:hover {
            color: var(--kaiyun-white);
        }

        .kaiyun-nav-links a.active {
            color: var(--kaiyun-green);
        }

        .kaiyun-nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .kaiyun-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--kaiyun-radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            padding: 12px 22px;
            transition: all 0.3s ease;
            border: none;
            line-height: 1.4;
            text-align: center;
            white-space: nowrap;
        }

        .kaiyun-btn-primary {
            background: var(--kaiyun-amber);
            color: #1A120C;
            box-shadow: 0 4px 16px rgba(255, 138, 61, 0.28);
        }

        .kaiyun-btn-primary:hover {
            background: #FF9D5C;
            color: #1A120C;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 138, 61, 0.38);
        }

        .kaiyun-btn-ghost {
            background: transparent;
            color: var(--kaiyun-white);
            border: 1px solid var(--kaiyun-border-medium);
        }

        .kaiyun-btn-ghost:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
            transform: translateY(-2px);
            box-shadow: 0 0 16px rgba(166, 249, 68, 0.15);
        }

        .kaiyun-btn-sm {
            padding: 9px 16px;
            font-size: 14px;
        }

        /* 移动端汉堡按钮 */
        .kaiyun-mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--kaiyun-border-medium);
            border-radius: 4px;
            width: 42px;
            height: 38px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            flex-shrink: 0;
        }

        .kaiyun-mobile-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--kaiyun-silver);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .kaiyun-mobile-toggle:hover span {
            background: var(--kaiyun-green);
        }

        /* ===== 内页 Hero ===== */
        .kaiyun-inner-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center center;
            overflow: hidden;
        }

        .kaiyun-inner-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 14, 0.72) 0%, rgba(10, 15, 14, 0.88) 55%, rgba(10, 15, 14, 0.97) 100%);
            z-index: 1;
        }

        .kaiyun-inner-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(166, 249, 68, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(166, 249, 68, 0.05) 1px, transparent 1px);
            background-size: 42px 42px;
            z-index: 1;
            pointer-events: none;
        }

        .kaiyun-inner-hero .kaiyun-container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 360px;
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .kaiyun-inner-hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--kaiyun-green);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .kaiyun-inner-hero-label::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--kaiyun-green);
            border-radius: 2px;
        }

        .kaiyun-inner-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 16px;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .kaiyun-inner-hero p {
            font-size: 17px;
            color: var(--kaiyun-silver);
            margin: 0;
            max-width: 680px;
            line-height: 1.75;
        }

        /* ===== 数据总览 ===== */
        .kaiyun-stats-overview {
            padding: 48px 0 56px;
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .kaiyun-stats-overview .kaiyun-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .kaiyun-stat-block {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 24px 20px;
            text-align: center;
            position: relative;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .kaiyun-stat-block:hover {
            border-color: rgba(166, 249, 68, 0.3);
            box-shadow: var(--kaiyun-shadow-glow);
        }

        .kaiyun-stat-block .kaiyun-stat-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--kaiyun-green);
            font-family: var(--kaiyun-font-mono);
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 6px;
        }

        .kaiyun-stat-block .kaiyun-stat-label {
            font-size: 14px;
            color: var(--kaiyun-muted);
            line-height: 1.5;
        }

        .kaiyun-stat-block::after {
            content: "";
            position: absolute;
            top: 8px;
            right: 8px;
            width: 10px;
            height: 10px;
            border-top: 1px solid rgba(166, 249, 68, 0.5);
            border-right: 1px solid rgba(166, 249, 68, 0.5);
        }

        .kaiyun-stat-block::before {
            content: "";
            position: absolute;
            bottom: 8px;
            left: 8px;
            width: 10px;
            height: 10px;
            border-bottom: 1px solid rgba(166, 249, 68, 0.5);
            border-left: 1px solid rgba(166, 249, 68, 0.5);
        }

        /* ===== 时间轴 ===== */
        .kaiyun-timeline-section {
            padding: 64px 0;
        }

        .kaiyun-section-header {
            margin-bottom: 48px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .kaiyun-section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0;
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .kaiyun-section-header .kaiyun-section-sub {
            font-size: 15px;
            color: var(--kaiyun-muted);
            margin: 8px 0 0;
            max-width: 560px;
            line-height: 1.7;
        }

        .kaiyun-section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--kaiyun-amber-soft);
            color: var(--kaiyun-amber);
            font-size: 13px;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 20px;
            border: 1px solid rgba(255, 138, 61, 0.3);
            white-space: nowrap;
        }

        .kaiyun-timeline {
            position: relative;
            max-width: 1100px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .kaiyun-timeline::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.2) 8%, rgba(255, 255, 255, 0.2) 92%, transparent);
            transform: translateX(-50%);
        }

        .kaiyun-timeline-item {
            position: relative;
            margin-bottom: 56px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .kaiyun-timeline-item:last-child {
            margin-bottom: 0;
        }

        .kaiyun-timeline-dot {
            position: absolute;
            left: 50%;
            top: 30px;
            width: 14px;
            height: 14px;
            background: var(--kaiyun-amber);
            border-radius: 50%;
            transform: translateX(-50%);
            box-shadow: 0 0 14px rgba(255, 138, 61, 0.6);
            z-index: 2;
        }

        .kaiyun-timeline-dot::after {
            content: "";
            position: absolute;
            left: 50%;
            top: 50%;
            width: 26px;
            height: 26px;
            border: 1px solid rgba(255, 138, 61, 0.5);
            border-radius: 50%;
            transform: translate(-50%, -50%);
        }

        .kaiyun-timeline-content {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px;
            position: relative;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        .kaiyun-timeline-content:hover {
            border-color: rgba(166, 249, 68, 0.35);
            box-shadow: var(--kaiyun-shadow-glow);
            transform: translateY(-3px);
        }

        .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-content {
            grid-column: 1;
            text-align: right;
        }

        .kaiyun-timeline-item:nth-child(even) .kaiyun-timeline-content {
            grid-column: 2;
            text-align: left;
        }

        .kaiyun-timeline-date {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--kaiyun-amber);
            font-family: var(--kaiyun-font-mono);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .kaiyun-timeline-date::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--kaiyun-amber);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-date {
            justify-content: flex-end;
        }

        .kaiyun-timeline-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 10px;
            line-height: 1.4;
            letter-spacing: -0.2px;
        }

        .kaiyun-timeline-industry {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--kaiyun-green);
            background: var(--kaiyun-green-soft);
            border: 1px solid rgba(166, 249, 68, 0.25);
            padding: 5px 12px;
            border-radius: 16px;
            margin-bottom: 12px;
        }

        .kaiyun-timeline-content p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0 0 16px;
            line-height: 1.7;
        }

        .kaiyun-timeline-metrics {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-metrics {
            justify-content: flex-end;
        }

        .kaiyun-timeline-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .kaiyun-timeline-metric-num {
            font-size: 20px;
            font-weight: 800;
            color: var(--kaiyun-green);
            font-family: var(--kaiyun-font-mono);
            letter-spacing: -0.5px;
        }

        .kaiyun-timeline-metric-label {
            font-size: 12px;
            color: var(--kaiyun-muted);
        }

        /* 图片缩略图 */
        .kaiyun-timeline-thumb {
            grid-column: 2;
            border-radius: var(--kaiyun-radius-md);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            position: relative;
        }

        .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-thumb {
            grid-column: 1;
            grid-row: 1;
        }

        .kaiyun-timeline-item:nth-child(even) .kaiyun-timeline-thumb {
            grid-column: 2;
            grid-row: 1;
        }

        .kaiyun-timeline-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .kaiyun-timeline-thumb:hover img {
            transform: scale(1.05);
        }

        .kaiyun-timeline-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 15, 14, 0.7) 100%);
            pointer-events: none;
        }

        /* ===== 行业标签 ===== */
        .kaiyun-industry-section {
            padding: 56px 0;
            background: var(--kaiyun-bg-secondary);
            border-top: 1px solid var(--kaiyun-border);
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .kaiyun-industry-tags {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 24px;
        }

        .kaiyun-industry-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 20px;
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-lg);
            font-size: 14px;
            font-weight: 600;
            color: var(--kaiyun-silver);
            transition: all 0.3s ease;
            cursor: default;
        }

        .kaiyun-industry-tag:hover {
            border-color: var(--kaiyun-green);
            color: var(--kaiyun-green);
            box-shadow: var(--kaiyun-shadow-glow);
            transform: translateY(-2px);
        }

        .kaiyun-industry-tag .kaiyun-tag-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--kaiyun-green);
            flex-shrink: 0;
        }

        /* ===== 客户评价 ===== */
        .kaiyun-testimonials-section {
            padding: 64px 0;
        }

        .kaiyun-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .kaiyun-testimonial-card {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            padding: 28px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        .kaiyun-testimonial-card:hover {
            border-color: rgba(166, 249, 68, 0.3);
            box-shadow: var(--kaiyun-shadow-glow);
            transform: translateY(-3px);
        }

        .kaiyun-testimonial-card p {
            font-size: 15px;
            color: var(--kaiyun-silver);
            margin: 0 0 18px;
            line-height: 1.75;
        }

        .kaiyun-testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .kaiyun-testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
                radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
                #111A17;
            border: 1px solid rgba(166, 249, 68, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--kaiyun-green);
            flex-shrink: 0;
        }

        .kaiyun-testimonial-author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--kaiyun-white);
            display: block;
        }

        .kaiyun-testimonial-author-role {
            font-size: 12px;
            color: var(--kaiyun-muted);
            display: block;
        }

        /* ===== FAQ ===== */
        .kaiyun-faq-section {
            padding: 64px 0;
            background: var(--kaiyun-bg-secondary);
            border-top: 1px solid var(--kaiyun-border);
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .kaiyun-faq-accordion {
            max-width: 840px;
            margin: 0 auto;
        }

        .kaiyun-faq-accordion .accordion-item {
            background: var(--kaiyun-panel);
            border: 1px solid var(--kaiyun-border);
            border-radius: var(--kaiyun-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .kaiyun-faq-accordion .accordion-title {
            background: transparent;
            color: var(--kaiyun-white);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color 0.3s ease, background-color 0.3s ease;
            line-height: 1.5;
        }

        .kaiyun-faq-accordion .accordion-title:hover {
            color: var(--kaiyun-green);
            background: rgba(166, 249, 68, 0.04);
        }

        .kaiyun-faq-accordion .accordion-title::after {
            content: "+";
            font-size: 22px;
            font-weight: 400;
            color: var(--kaiyun-green);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            margin-left: 8px;
        }

        .kaiyun-faq-accordion .is-active .accordion-title {
            color: var(--kaiyun-green);
            background: rgba(166, 249, 68, 0.06);
        }

        .kaiyun-faq-accordion .is-active .accordion-title::after {
            transform: rotate(45deg);
        }

        .kaiyun-faq-accordion .accordion-content {
            background: var(--kaiyun-panel-light);
            color: var(--kaiyun-silver);
            font-size: 15px;
            line-height: 1.75;
            padding: 0 22px 20px;
            border-left: 3px solid var(--kaiyun-green);
            margin-left: 20px;
            border-radius: 0 0 var(--kaiyun-radius-md) 0;
        }

        /* ===== CTA ===== */
        .kaiyun-cta-section {
            padding: 80px 0;
            background: radial-gradient(ellipse at 50% 50%, rgba(166, 249, 68, 0.07) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(255, 138, 61, 0.05) 0%, transparent 50%),
                var(--kaiyun-bg);
            text-align: center;
            border-top: 1px solid var(--kaiyun-border);
            border-bottom: 1px solid var(--kaiyun-border);
        }

        .kaiyun-cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 14px;
            letter-spacing: -0.3px;
        }

        .kaiyun-cta-section p {
            font-size: 16px;
            color: var(--kaiyun-silver);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.75;
        }

        .kaiyun-cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 加载更多 ===== */
        .kaiyun-load-more {
            padding: 48px 0;
            text-align: center;
        }

        .kaiyun-load-more .kaiyun-btn {
            min-width: 180px;
        }

        .kaiyun-hidden-cases {
            display: none;
        }

        .kaiyun-hidden-cases.visible {
            display: block;
        }

        /* ===== 页脚 ===== */
        .kaiyun-footer {
            background: #070B09;
            border-top: 1px solid var(--kaiyun-border);
            padding: 56px 0 28px;
        }

        .kaiyun-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .kaiyun-footer-brand-text {
            font-size: 14px;
            color: var(--kaiyun-muted);
            margin-top: 14px;
            line-height: 1.7;
        }

        .kaiyun-footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--kaiyun-white);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
        }

        .kaiyun-footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .kaiyun-footer-links a {
            font-size: 14px;
            color: var(--kaiyun-muted);
            transition: color 0.25s ease;
        }

        .kaiyun-footer-links a:hover {
            color: var(--kaiyun-amber);
        }

        .kaiyun-footer-contact {
            font-size: 14px;
            color: var(--kaiyun-muted);
            line-height: 2;
            margin: 0;
        }

        .kaiyun-footer-contact span {
            color: var(--kaiyun-silver);
            font-weight: 500;
        }

        .kaiyun-footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 22px;
            border-top: 1px solid var(--kaiyun-border);
            font-size: 13px;
            color: var(--kaiyun-muted);
        }

        .kaiyun-footer-bottom a {
            color: var(--kaiyun-muted);
            transition: color 0.25s ease;
        }

        .kaiyun-footer-bottom a:hover {
            color: var(--kaiyun-amber);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --kaiyun-section-gap: 48px;
            }

            .kaiyun-timeline {
                max-width: 100%;
            }

            .kaiyun-timeline::before {
                left: 12px;
                transform: none;
            }

            .kaiyun-timeline-item {
                grid-template-columns: 1fr;
                gap: 16px;
                margin-bottom: 40px;
                padding-left: 44px;
            }

            .kaiyun-timeline-dot {
                left: 12px;
                top: 28px;
                transform: translateX(-50%);
            }

            .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-content,
            .kaiyun-timeline-item:nth-child(even) .kaiyun-timeline-content {
                grid-column: 1;
                text-align: left;
            }

            .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-date {
                justify-content: flex-start;
            }

            .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-metrics {
                justify-content: flex-start;
            }

            .kaiyun-timeline-item:nth-child(odd) .kaiyun-timeline-thumb,
            .kaiyun-timeline-item:nth-child(even) .kaiyun-timeline-thumb {
                grid-column: 1;
                grid-row: auto;
            }

            .kaiyun-timeline-thumb {
                aspect-ratio: 16/8;
            }

            .kaiyun-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .kaiyun-mobile-toggle {
                display: flex;
            }

            .kaiyun-nav-links {
                position: absolute;
                top: var(--kaiyun-nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                background: rgba(10, 15, 14, 0.97);
                border-bottom: 1px solid var(--kaiyun-border);
                display: none;
                padding: 12px 24px;
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
            }

            .kaiyun-nav-links.open {
                display: flex;
            }

            .kaiyun-nav-links li {
                width: 100%;
            }

            .kaiyun-nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--kaiyun-border);
                width: 100%;
            }

            .kaiyun-nav-links li:last-child a {
                border-bottom: none;
            }

            .kaiyun-nav-links a::after {
                display: none;
            }

            .kaiyun-nav-cta .kaiyun-btn-ghost {
                display: none;
            }

            .kaiyun-nav-cta .kaiyun-btn-primary {
                padding: 9px 14px;
                font-size: 13px;
            }

            .kaiyun-inner-hero {
                min-height: 280px;
            }

            .kaiyun-inner-hero .kaiyun-container {
                min-height: 280px;
                padding-top: 36px;
                padding-bottom: 36px;
            }

            .kaiyun-inner-hero h1 {
                font-size: 28px;
            }

            .kaiyun-inner-hero p {
                font-size: 15px;
            }

            .kaiyun-stats-overview .kaiyun-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .kaiyun-stat-block .kaiyun-stat-num {
                font-size: 28px;
            }

            .kaiyun-section-header h2 {
                font-size: 24px;
            }

            .kaiyun-timeline-content {
                padding: 18px;
            }

            .kaiyun-timeline-content h3 {
                font-size: 17px;
            }

            .kaiyun-timeline-metrics {
                gap: 14px;
            }

            .kaiyun-timeline-metric-num {
                font-size: 17px;
            }

            .kaiyun-testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .kaiyun-cta-section h2 {
                font-size: 24px;
            }

            .kaiyun-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .kaiyun-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .kaiyun-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .kaiyun-inner-hero h1 {
                font-size: 24px;
            }

            .kaiyun-stats-overview .kaiyun-container {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .kaiyun-stat-block {
                padding: 16px;
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
            }

            .kaiyun-stat-block .kaiyun-stat-num {
                font-size: 26px;
                margin-bottom: 0;
                min-width: 80px;
                text-align: center;
            }

            .kaiyun-stat-block .kaiyun-stat-label {
                font-size: 13px;
            }

            .kaiyun-timeline {
                padding-left: 0;
            }

            .kaiyun-timeline-item {
                padding-left: 32px;
            }

            .kaiyun-timeline-dot {
                width: 10px;
                height: 10px;
            }

            .kaiyun-timeline-dot::after {
                width: 20px;
                height: 20px;
            }

            .kaiyun-timeline-content {
                padding: 14px;
            }

            .kaiyun-timeline-date {
                font-size: 12px;
            }

            .kaiyun-industry-tags {
                gap: 10px;
            }

            .kaiyun-industry-tag {
                padding: 9px 14px;
                font-size: 12px;
            }

            .kaiyun-faq-accordion .accordion-title {
                font-size: 14px;
                padding: 14px 16px;
            }

            .kaiyun-faq-accordion .accordion-content {
                padding: 0 14px 14px;
                margin-left: 12px;
                font-size: 13px;
            }

            .kaiyun-cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .kaiyun-cta-buttons .kaiyun-btn {
                width: 100%;
                max-width: 280px;
            }
        }

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--kaiyun-green);
            outline-offset: 2px;
        }

/* roulang page: category5 */
:root {
        --kaiyun-bg: #0A0F0E;
        --kaiyun-bg-secondary: #0E1512;
        --kaiyun-panel: #111A17;
        --kaiyun-panel-light: #16211D;
        --kaiyun-green: #A6F944;
        --kaiyun-green-soft: rgba(166, 249, 68, 0.14);
        --kaiyun-green-glow: rgba(166, 249, 68, 0.28);
        --kaiyun-amber: #FF8A3D;
        --kaiyun-amber-soft: rgba(255, 138, 61, 0.14);
        --kaiyun-amber-glow: rgba(255, 138, 61, 0.3);
        --kaiyun-white: #F4F7F2;
        --kaiyun-silver: #C9D2CC;
        --kaiyun-muted: #88938E;
        --kaiyun-border: rgba(255, 255, 255, 0.08);
        --kaiyun-border-medium: rgba(255, 255, 255, 0.14);
        --kaiyun-radius-sm: 4px;
        --kaiyun-radius-md: 8px;
        --kaiyun-radius-lg: 12px;
        --kaiyun-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);
        --kaiyun-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.35);
        --kaiyun-shadow-glow: 0 0 24px rgba(166, 249, 68, 0.18);
        --kaiyun-font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
        --kaiyun-font-mono: 'SF Mono', 'Roboto Mono', 'Consolas', 'Courier New', monospace;
        --kaiyun-section-gap: 80px;
        --kaiyun-container-max: 1200px;
        --kaiyun-nav-height: 72px;
    }

    html {
        scroll-behavior: smooth;
        background-color: var(--kaiyun-bg);
    }

    body {
        margin: 0;
        font-family: var(--kaiyun-font-family);
        background-color: var(--kaiyun-bg);
        color: var(--kaiyun-white);
        line-height: 1.8;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

    a {
        color: var(--kaiyun-silver);
        text-decoration: none;
        transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
    }

    a:hover {
        color: var(--kaiyun-amber);
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    button,
    input,
    textarea,
    select {
        font-family: inherit;
        font-size: inherit;
    }

    .kaiyun-container {
        max-width: var(--kaiyun-container-max);
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* ===== 底纹网格背景 ===== */
    .kaiyun-grid-bg {
        position: relative;
        background-color: var(--kaiyun-bg);
    }

    .kaiyun-grid-bg::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(166, 249, 68, 0.04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(166, 249, 68, 0.04) 1px, transparent 1px);
        background-size: 48px 48px;
        pointer-events: none;
        z-index: 1;
    }

    .kaiyun-grid-bg > * {
        position: relative;
        z-index: 2;
    }

    /* ===== 导航 ===== */
    .kaiyun-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(10, 15, 14, 0.88);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--kaiyun-border);
        min-height: var(--kaiyun-nav-height);
        display: flex;
        align-items: center;
        transition: box-shadow 0.3s ease, background-color 0.3s ease;
    }

    .kaiyun-header.scrolled {
        box-shadow: 0 6px 32px rgba(0, 0, 0, 0.45);
        background: rgba(10, 15, 14, 0.94);
    }

    .kaiyun-header .kaiyun-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        gap: 24px;
    }

    .kaiyun-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--kaiyun-white);
        letter-spacing: 0.4px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .kaiyun-logo:hover {
        color: var(--kaiyun-green);
    }

    .kaiyun-logo-icon {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: radial-gradient(circle at 32% 28%, rgba(166, 249, 68, 0.28), rgba(166, 249, 68, 0.05) 60%),
            radial-gradient(circle at 68% 72%, rgba(255, 138, 61, 0.22), transparent 58%),
            #111A17;
        border: 1px solid rgba(166, 249, 68, 0.35);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        font-weight: 800;
        color: var(--kaiyun-green);
        letter-spacing: -0.5px;
        box-shadow: 0 0 12px rgba(166, 249, 68, 0.15);
    }

    .kaiyun-nav-links {
        display: flex;
        align-items: center;
        gap: 28px;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: nowrap;
    }

    .kaiyun-nav-links li {
        margin: 0;
    }

    .kaiyun-nav-links a {
        color: var(--kaiyun-silver);
        font-size: 15px;
        font-weight: 500;
        padding: 8px 2px;
        position: relative;
        white-space: nowrap;
    }

    .kaiyun-nav-links a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 0;
        height: 2px;
        background: var(--kaiyun-green);
        transition: width 0.25s ease;
    }

    .kaiyun-nav-links a:hover::after,
    .kaiyun-nav-links a.active::after {
        width: 100%;
    }

    .kaiyun-nav-links a.active {
        color: var(--kaiyun-green);
    }

    .kaiyun-nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .kaiyun-btn-ghost {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 10px 18px;
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        color: var(--kaiyun-white);
        font-size: 14px;
        font-weight: 500;
        background: transparent;
        transition: all 0.25s ease;
        white-space: nowrap;
    }

    .kaiyun-btn-ghost:hover {
        border-color: var(--kaiyun-green);
        color: var(--kaiyun-green);
        background: var(--kaiyun-green-soft);
    }

    .kaiyun-btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        background: var(--kaiyun-amber);
        color: var(--kaiyun-white);
        border: none;
        border-radius: var(--kaiyun-radius-sm);
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 0.3px;
        cursor: pointer;
        transition: all 0.25s ease;
        white-space: nowrap;
        box-shadow: 0 4px 16px rgba(255, 138, 61, 0.25);
    }

    .kaiyun-btn-primary:hover {
        background: #ff9c5c;
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(255, 138, 61, 0.35);
    }

    .kaiyun-btn-primary:focus,
    .kaiyun-btn-ghost:focus {
        outline: 2px solid var(--kaiyun-green);
        outline-offset: 2px;
    }

    /* ===== 移动端汉堡菜单 ===== */
    .kaiyun-menu-toggle {
        display: none;
        background: none;
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        color: var(--kaiyun-white);
        padding: 8px 12px;
        font-size: 18px;
        cursor: pointer;
        transition: border-color 0.25s ease, color 0.25s ease;
    }

    .kaiyun-menu-toggle:hover {
        border-color: var(--kaiyun-green);
        color: var(--kaiyun-green);
    }

    .kaiyun-mobile-menu {
        display: none;
        position: fixed;
        top: var(--kaiyun-nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 15, 14, 0.98);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--kaiyun-border);
        padding: 20px 24px;
        z-index: 99;
        flex-direction: column;
        gap: 12px;
    }

    .kaiyun-mobile-menu.open {
        display: flex;
    }

    .kaiyun-mobile-menu a {
        color: var(--kaiyun-silver);
        font-size: 16px;
        padding: 10px 0;
        border-bottom: 1px solid var(--kaiyun-border);
    }

    .kaiyun-mobile-menu a.active {
        color: var(--kaiyun-green);
    }

    .kaiyun-mobile-menu .kaiyun-btn-primary {
        justify-content: center;
        width: 100%;
        margin-top: 8px;
    }

    /* ===== 内页 Hero ===== */
    .kaiyun-hero-inner {
        position: relative;
        min-height: 420px;
        display: flex;
        align-items: center;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        padding: 64px 0 56px;
        overflow: hidden;
    }

    .kaiyun-hero-inner::before {
        content: "";
        position: absolute;
        inset: 0;
        background: rgba(10, 15, 14, 0.75);
        z-index: 1;
    }

    .kaiyun-hero-inner::after {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(166, 249, 68, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(166, 249, 68, 0.05) 1px, transparent 1px);
        background-size: 48px 48px;
        z-index: 1;
        pointer-events: none;
    }

    .kaiyun-hero-inner .kaiyun-container {
        position: relative;
        z-index: 2;
        width: 100%;
    }

    .kaiyun-hero-inner-content {
        max-width: 780px;
    }

    .kaiyun-hero-inner h1 {
        font-size: 36px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 16px;
        line-height: 1.25;
        letter-spacing: -0.5px;
    }

    .kaiyun-hero-inner .kaiyun-hero-tag {
        display: inline-block;
        padding: 6px 14px;
        background: var(--kaiyun-green-soft);
        color: var(--kaiyun-green);
        border: 1px solid rgba(166, 249, 68, 0.25);
        border-radius: 20px;
        font-size: 13px;
        font-weight: 500;
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }

    .kaiyun-hero-inner p {
        font-size: 17px;
        color: var(--kaiyun-silver);
        margin: 0 0 24px;
        line-height: 1.9;
        max-width: 640px;
    }

    .kaiyun-hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }

    /* ===== 内页主体板块 ===== */
    .kaiyun-section {
        padding: var(--kaiyun-section-gap) 0;
    }

    .kaiyun-section-header {
        margin-bottom: 48px;
    }

    .kaiyun-section-header h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 12px;
        letter-spacing: -0.3px;
        line-height: 1.35;
        position: relative;
        padding-left: 16px;
    }

    .kaiyun-section-header h2::before {
        content: "";
        position: absolute;
        left: 0;
        top: 4px;
        bottom: 4px;
        width: 3px;
        background: var(--kaiyun-green);
        border-radius: 2px;
        box-shadow: 0 0 8px rgba(166, 249, 68, 0.3);
    }

    .kaiyun-section-header p {
        color: var(--kaiyun-muted);
        font-size: 16px;
        margin: 0;
        max-width: 620px;
    }

    /* ===== 数据看板 ===== */
    .kaiyun-data-board {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 0;
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-lg);
        overflow: hidden;
        position: relative;
    }

    .kaiyun-data-board::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(166, 249, 68, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(166, 249, 68, 0.03) 1px, transparent 1px);
        background-size: 40px 40px;
        pointer-events: none;
    }

    .kaiyun-data-item {
        padding: 32px 24px;
        text-align: center;
        border-right: 1px solid var(--kaiyun-border);
        position: relative;
        z-index: 1;
        transition: background-color 0.3s ease;
    }

    .kaiyun-data-item:last-child {
        border-right: none;
    }

    .kaiyun-data-item:hover {
        background: rgba(166, 249, 68, 0.05);
    }

    .kaiyun-data-number {
        font-family: var(--kaiyun-font-mono);
        font-size: 40px;
        font-weight: 700;
        color: var(--kaiyun-green);
        line-height: 1.2;
        margin-bottom: 8px;
        text-shadow: 0 0 18px rgba(166, 249, 68, 0.25);
    }

    .kaiyun-data-label {
        font-size: 14px;
        color: var(--kaiyun-silver);
        font-weight: 500;
        letter-spacing: 0.3px;
    }

    .kaiyun-data-sub {
        font-size: 12px;
        color: var(--kaiyun-muted);
        margin-top: 4px;
    }

    /* ===== 搜索筛选区 ===== */
    .kaiyun-filter-bar {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        padding: 20px 24px;
        margin-bottom: 32px;
    }

    .kaiyun-search-input-wrap {
        flex: 1 1 260px;
        position: relative;
    }

    .kaiyun-search-input-wrap i {
        position: absolute;
        left: 14px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--kaiyun-muted);
        font-size: 14px;
    }

    .kaiyun-search-input {
        width: 100%;
        padding: 12px 16px 12px 40px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        color: var(--kaiyun-white);
        font-size: 14px;
        transition: border-color 0.25s ease, box-shadow 0.25s ease;
        outline: none;
    }

    .kaiyun-search-input::placeholder {
        color: var(--kaiyun-muted);
    }

    .kaiyun-search-input:focus {
        border-color: var(--kaiyun-green);
        box-shadow: 0 0 0 3px rgba(166, 249, 68, 0.1);
    }

    .kaiyun-filter-select {
        flex: 0 1 auto;
        min-width: 150px;
        padding: 12px 16px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        color: var(--kaiyun-white);
        font-size: 14px;
        cursor: pointer;
        transition: border-color 0.25s ease;
        outline: none;
        appearance: none;
        -webkit-appearance: none;
        background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C9D2CC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 16px;
        padding-right: 36px;
    }

    .kaiyun-filter-select:focus {
        border-color: var(--kaiyun-green);
        box-shadow: 0 0 0 3px rgba(166, 249, 68, 0.1);
    }

    .kaiyun-filter-select option {
        background: var(--kaiyun-panel);
        color: var(--kaiyun-white);
    }

    /* ===== 资源卡片网格 ===== */
    .kaiyun-resource-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-bottom: 40px;
    }

    .kaiyun-resource-card {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        overflow: hidden;
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
    }

    .kaiyun-resource-card:hover {
        transform: translateY(-4px);
        border-color: rgba(166, 249, 68, 0.3);
        box-shadow: var(--kaiyun-shadow-glow);
    }

    .kaiyun-resource-card-img {
        width: 100%;
        aspect-ratio: 16/10;
        object-fit: cover;
        background: var(--kaiyun-panel-light);
    }

    .kaiyun-resource-card-body {
        padding: 20px 20px 24px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }

    .kaiyun-resource-card-tag {
        display: inline-block;
        align-self: flex-start;
        padding: 4px 12px;
        background: var(--kaiyun-amber-soft);
        color: var(--kaiyun-amber);
        border-radius: 20px;
        font-size: 12px;
        font-weight: 500;
        margin-bottom: 12px;
        letter-spacing: 0.3px;
    }

    .kaiyun-resource-card-tag.green {
        background: var(--kaiyun-green-soft);
        color: var(--kaiyun-green);
    }

    .kaiyun-resource-card h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--kaiyun-white);
        margin: 0 0 8px;
        line-height: 1.5;
    }

    .kaiyun-resource-card p {
        font-size: 14px;
        color: var(--kaiyun-muted);
        margin: 0 0 16px;
        line-height: 1.7;
        flex: 1;
    }

    .kaiyun-resource-card-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 13px;
        color: var(--kaiyun-muted);
        padding-top: 14px;
        border-top: 1px solid var(--kaiyun-border);
    }

    .kaiyun-resource-card-meta a {
        color: var(--kaiyun-green);
        font-weight: 500;
        transition: color 0.25s ease;
    }

    .kaiyun-resource-card-meta a:hover {
        color: var(--kaiyun-amber);
    }

    /* ===== 手风琴列表 ===== */
    .kaiyun-accordion-wrapper {
        margin-top: 8px;
    }

    .kaiyun-accordion-item {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: border-color 0.3s ease;
    }

    .kaiyun-accordion-item:focus-within {
        border-color: rgba(166, 249, 68, 0.3);
    }

    .kaiyun-accordion-header {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 20px;
        background: none;
        border: none;
        color: var(--kaiyun-white);
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        text-align: left;
        transition: background-color 0.25s ease;
        gap: 16px;
    }

    .kaiyun-accordion-header:hover {
        background: rgba(166, 249, 68, 0.04);
    }

    .kaiyun-accordion-header .kaiyun-accordion-icon {
        flex-shrink: 0;
        font-size: 18px;
        color: var(--kaiyun-green);
        transition: transform 0.35s ease;
        font-weight: 400;
    }

    .kaiyun-accordion-item.open .kaiyun-accordion-icon {
        transform: rotate(45deg);
    }

    .kaiyun-accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.35s ease;
        padding: 0 20px;
        border-left: 3px solid transparent;
    }

    .kaiyun-accordion-item.open .kaiyun-accordion-content {
        max-height: 500px;
        padding: 4px 20px 20px;
        border-left-color: var(--kaiyun-green);
        background: rgba(166, 249, 68, 0.03);
    }

    .kaiyun-accordion-content p {
        margin: 0;
        color: var(--kaiyun-silver);
        font-size: 15px;
        line-height: 1.9;
    }

    .kaiyun-accordion-content ul {
        margin: 12px 0 0;
        padding-left: 20px;
        color: var(--kaiyun-silver);
        font-size: 14px;
        line-height: 1.9;
    }

    .kaiyun-accordion-content ul li {
        margin-bottom: 6px;
    }

    /* ===== FAQ 板块 ===== */
    .kaiyun-faq-wrap {
        max-width: 800px;
        margin: 0 auto;
    }

    /* ===== CTA 板块 ===== */
    .kaiyun-cta-section {
        background: var(--kaiyun-panel);
        border: 1px solid var(--kaiyun-border);
        border-radius: var(--kaiyun-radius-lg);
        padding: 56px 40px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .kaiyun-cta-section::before {
        content: "";
        position: absolute;
        top: -50%;
        left: 50%;
        transform: translateX(-50%);
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(166, 249, 68, 0.08), transparent 60%);
        pointer-events: none;
    }

    .kaiyun-cta-section h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--kaiyun-white);
        margin: 0 0 12px;
    }

    .kaiyun-cta-section p {
        color: var(--kaiyun-silver);
        font-size: 16px;
        margin: 0 auto 28px;
        max-width: 520px;
    }

    .kaiyun-cta-section .kaiyun-btn-primary {
        font-size: 16px;
        padding: 14px 32px;
    }

    /* ===== 分页/加载更多 ===== */
    .kaiyun-load-more {
        display: flex;
        justify-content: center;
        margin-top: 16px;
    }

    .kaiyun-btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border: 1px solid var(--kaiyun-border-medium);
        border-radius: var(--kaiyun-radius-sm);
        color: var(--kaiyun-white);
        font-size: 14px;
        font-weight: 500;
        background: transparent;
        cursor: pointer;
        transition: all 0.25s ease;
    }

    .kaiyun-btn-outline:hover {
        border-color: var(--kaiyun-green);
        color: var(--kaiyun-green);
        background: var(--kaiyun-green-soft);
    }

    .kaiyun-btn-outline:focus {
        outline: 2px solid var(--kaiyun-green);
        outline-offset: 2px;
    }

    /* ===== 页脚 ===== */
    .kaiyun-footer {
        background: var(--kaiyun-bg-secondary);
        border-top: 1px solid var(--kaiyun-border);
        padding: 56px 0 24px;
        margin-top: 40px;
    }

    .kaiyun-footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 40px;
        margin-bottom: 40px;
    }

    .kaiyun-footer-brand-text {
        color: var(--kaiyun-muted);
        font-size: 14px;
        line-height: 1.9;
        margin-top: 14px;
        max-width: 320px;
    }

    .kaiyun-footer h4 {
        color: var(--kaiyun-white);
        font-size: 16px;
        font-weight: 600;
        margin: 0 0 16px;
    }

    .kaiyun-footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .kaiyun-footer-links li {
        margin-bottom: 10px;
    }

    .kaiyun-footer-links a {
        color: var(--kaiyun-muted);
        font-size: 14px;
        transition: color 0.25s ease;
    }

    .kaiyun-footer-links a:hover {
        color: var(--kaiyun-amber);
    }

    .kaiyun-footer-contact {
        color: var(--kaiyun-muted);
        font-size: 14px;
        line-height: 2;
    }

    .kaiyun-footer-contact span {
        color: var(--kaiyun-silver);
    }

    .kaiyun-footer-bottom {
        border-top: 1px solid var(--kaiyun-border);
        padding-top: 20px;
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 13px;
        color: var(--kaiyun-muted);
        justify-content: center;
        text-align: center;
    }

    .kaiyun-footer-bottom a {
        color: var(--kaiyun-muted);
    }

    .kaiyun-footer-bottom a:hover {
        color: var(--kaiyun-amber);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .kaiyun-nav-links {
            gap: 18px;
        }
        .kaiyun-nav-links a {
            font-size: 14px;
        }
        .kaiyun-resource-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .kaiyun-data-board {
            grid-template-columns: repeat(2, 1fr);
        }
        .kaiyun-data-item {
            border-bottom: 1px solid var(--kaiyun-border);
        }
        .kaiyun-data-item:nth-child(2) {
            border-right: none;
        }
        .kaiyun-data-item:nth-child(3),
        .kaiyun-data-item:nth-child(4) {
            border-bottom: none;
        }
        .kaiyun-footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        :root {
            --kaiyun-section-gap: 56px;
        }
        .kaiyun-nav-links {
            display: none;
        }
        .kaiyun-nav-cta .kaiyun-btn-ghost {
            display: none;
        }
        .kaiyun-menu-toggle {
            display: block;
        }
        .kaiyun-hero-inner h1 {
            font-size: 28px;
        }
        .kaiyun-hero-inner {
            min-height: 360px;
        }
        .kaiyun-resource-grid {
            grid-template-columns: 1fr;
        }
        .kaiyun-data-board {
            grid-template-columns: 1fr 1fr;
        }
        .kaiyun-data-number {
            font-size: 30px;
        }
        .kaiyun-cta-section {
            padding: 40px 24px;
        }
        .kaiyun-cta-section h2 {
            font-size: 23px;
        }
        .kaiyun-footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .kaiyun-filter-bar {
            flex-direction: column;
            align-items: stretch;
        }
        .kaiyun-filter-select {
            width: 100%;
        }
    }

    @media (max-width: 520px) {
        .kaiyun-container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .kaiyun-hero-inner h1 {
            font-size: 24px;
        }
        .kaiyun-hero-inner p {
            font-size: 15px;
        }
        .kaiyun-hero-actions {
            flex-direction: column;
        }
        .kaiyun-hero-actions .kaiyun-btn-primary,
        .kaiyun-hero-actions .kaiyun-btn-ghost {
            width: 100%;
            justify-content: center;
        }
        .kaiyun-data-board {
            grid-template-columns: 1fr;
        }
        .kaiyun-data-item {
            border-right: none;
            border-bottom: 1px solid var(--kaiyun-border);
            padding: 20px 16px;
        }
        .kaiyun-data-item:last-child {
            border-bottom: none;
        }
        .kaiyun-data-item:nth-child(2) {
            border-right: none;
        }
        .kaiyun-data-item:nth-child(3) {
            border-bottom: 1px solid var(--kaiyun-border);
        }
    }