/* roulang page: index */
:root {
            --primary: #0B132B;
            --primary-light: #1C2541;
            --accent: #10B981;
            --accent-glow: #00E599;
            --accent-orange: #F97316;
            --bg-light: #F8FAFC;
            --bg-surface: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-soft: #94A3B8;
            --border-light: #E2E8F0;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --shadow-card: 0 4px 20px -2px rgba(11, 19, 43, 0.06);
            --shadow-hover: 0 16px 32px -4px rgba(16, 185, 129, 0.14);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部双行导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .top-bar {
            background-color: var(--primary);
            color: #CBD5E1;
            font-size: 13px;
            padding: 8px 0;
            line-height: 1.2;
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-bar-tags span {
            margin-right: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav {
            padding: 14px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .brand-logo-badge {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 19px;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 4px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--accent);
            color: #064E3B;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.28);
        }

        .btn-primary:hover {
            background-color: var(--accent-glow);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 229, 153, 0.4);
        }

        .btn-outline {
            border-color: var(--border-light);
            background: #FFFFFF;
            color: var(--primary);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .btn-dark {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-dark:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
        }

        .mobile-toggle span {
            width: 24px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: var(--transition-smooth);
        }

        /* 通用 Section 样式 */
        .section {
            padding: 72px 0;
            position: relative;
        }

        .section-header {
            max-width: 820px;
            margin-bottom: 46px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            background: rgba(16, 185, 129, 0.12);
            color: #047857;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .tag-pill-orange {
            background: rgba(249, 115, 22, 0.12);
            color: #C2410C;
            border-color: rgba(249, 115, 22, 0.2);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero 优惠券与算力申领版式 */
        .hero-coupon-section {
            padding: 60px 0 80px;
            background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 60%),
                        linear-gradient(180deg, #F0FDF4 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border-light);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 44px;
            line-height: 1.2;
            color: var(--primary);
            font-weight: 900;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            color: #059669;
            background: linear-gradient(135deg, #059669 0%, #10B981 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-specs-row {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .spec-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-light);
            background: #FFFFFF;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
        }

        .coupon-wall-card {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            padding: 32px;
            border: 2px dashed #10B981;
            box-shadow: 0 20px 40px -10px rgba(16, 185, 129, 0.15);
            position: relative;
            overflow: hidden;
        }

        .coupon-badge-top {
            position: absolute;
            top: 0;
            right: 0;
            background: var(--accent-orange);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 20px;
            border-bottom-left-radius: 12px;
        }

        .coupon-amount-box {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-bottom: 12px;
        }

        .coupon-val {
            font-size: 52px;
            font-weight: 900;
            color: #064E3B;
            line-height: 1;
        }

        .coupon-unit {
            font-size: 20px;
            font-weight: 700;
            color: #059669;
        }

        .coupon-title {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .coupon-perks {
            list-style: none;
            margin-bottom: 24px;
            padding-top: 14px;
            border-top: 1px dashed var(--border-light);
        }

        .coupon-perks li {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .coupon-perks li::before {
            content: "✓";
            color: var(--accent);
            font-weight: 900;
        }

        .hero-banner-visual {
            margin-top: 24px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }

        /* 2. 左资讯流与右热榜 */
        .stream-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 36px;
        }

        .news-flow-item {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 22px;
            border: 1px solid var(--border-light);
            margin-bottom: 18px;
            transition: var(--transition-smooth);
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .news-flow-item:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--accent);
            transform: translateX(4px);
        }

        .news-flow-thumb {
            width: 140px;
            height: 96px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-flow-meta {
            font-size: 13px;
            color: var(--text-soft);
            margin-bottom: 6px;
            display: flex;
            gap: 12px;
        }

        .news-flow-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-flow-summary {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-ranking-board {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 26px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }

        .ranking-list {
            list-style: none;
            margin-top: 16px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid #F1F5F9;
        }

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

        .ranking-num {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: #F1F5F9;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .ranking-num {
            background: #EF4444;
            color: #FFFFFF;
        }
        .ranking-item:nth-child(2) .ranking-num {
            background: var(--accent-orange);
            color: #FFFFFF;
        }
        .ranking-item:nth-child(3) .ranking-num {
            background: var(--accent);
            color: #FFFFFF;
        }

        .ranking-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .ranking-info p {
            font-size: 13px;
            color: var(--text-soft);
        }

        /* 3. 专题条 */
        .topic-strip {
            background: linear-gradient(90deg, #0B132B 0%, #1E293B 100%);
            padding: 36px 0;
            color: #FFFFFF;
        }

        .topic-badges-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-strip-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px;
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

        .topic-strip-card:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
        }

        .topic-strip-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: #E2E8F0;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topic-strip-card p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.5;
        }

        /* 4. 最新动态 */
        .updates-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .update-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .update-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .update-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
        }

        .update-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .update-date {
            font-size: 12px;
            font-weight: 700;
            color: #059669;
            margin-bottom: 8px;
        }

        .update-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .update-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        /* 5. 媒体合作与产业生态 */
        .media-logos-box {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px;
        }

        .media-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
            align-items: center;
            text-align: center;
        }

        .media-brand-item {
            padding: 14px 10px;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-muted);
            border: 1px solid #F1F5F9;
            border-radius: 8px;
            background: #F8FAFC;
            transition: var(--transition-smooth);
        }

        .media-brand-item:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: #FFFFFF;
        }

        /* 6. 核心优势区 (3x2 网格) */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .adv-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            position: relative;
        }

        .adv-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent);
            box-shadow: 0 12px 28px rgba(16, 185, 129, 0.12);
        }

        .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(16, 185, 129, 0.1);
            color: #059669;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            font-weight: 900;
        }

        .adv-card h3 {
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .adv-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 7. 方案流转 4 步 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 26px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .process-card::after {
            content: "→";
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: #CBD5E1;
            font-weight: 900;
            z-index: 2;
        }

        .process-card:last-child::after {
            display: none;
        }

        .process-step-num {
            display: inline-block;
            font-size: 12px;
            font-weight: 800;
            color: #059669;
            background: rgba(16, 185, 129, 0.12);
            padding: 4px 10px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
        }

        .process-card h4 {
            font-size: 17px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .process-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 8. 算法架构深色区 */
        .dark-tech-section {
            background: radial-gradient(circle at top right, #1C2541 0%, #0B132B 100%);
            color: #FFFFFF;
            padding: 80px 0;
            border-top: 1px solid #1E293B;
            border-bottom: 1px solid #1E293B;
        }

        .dark-tech-section .section-title {
            color: #FFFFFF;
        }

        .dark-tech-section .section-desc {
            color: #94A3B8;
        }

        .arch-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .arch-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(8px);
            transition: var(--transition-smooth);
        }

        .arch-card:hover {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .arch-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-glow);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .arch-card h3 {
            font-size: 19px;
            font-weight: 800;
            color: #F8FAFC;
            margin-bottom: 10px;
        }

        .arch-card p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }

        /* 9. 标杆客户实战故事 */
        .case-story-card {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1fr;
            overflow: hidden;
            margin-bottom: 30px;
        }

        .case-story-media img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
        }

        .case-story-content {
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .case-tag {
            align-self: flex-start;
            font-size: 12px;
            font-weight: 700;
            color: #C2410C;
            background: #FFEDD5;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
        }

        .case-story-content h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .case-story-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .case-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid #F1F5F9;
        }

        .case-stat-block h5 {
            font-size: 26px;
            font-weight: 900;
            color: #059669;
            line-height: 1;
            margin-bottom: 4px;
        }

        .case-stat-block span {
            font-size: 13px;
            color: var(--text-soft);
        }

        /* 10. 吞吐数据统计条 */
        .metric-strip-box {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            padding: 40px 30px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .metric-col h3 {
            font-size: 40px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }

        .metric-col h3 span {
            font-size: 20px;
            color: #059669;
            font-weight: 800;
        }

        .metric-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .metric-col p {
            font-size: 13px;
            color: var(--text-soft);
        }

        /* 11. 适用人群画像对比 */
        .persona-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .persona-card {
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--border-light);
            background: #FFFFFF;
        }

        .persona-card.match {
            border-top: 4px solid var(--accent);
        }

        .persona-card.unmatch {
            border-top: 4px solid #94A3B8;
            background: #FAFAFA;
        }

        .persona-title {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .persona-list {
            list-style: none;
            margin-top: 16px;
        }

        .persona-list li {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.6;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .persona-card.match .persona-list li::before {
            content: "✓";
            color: #059669;
            font-weight: 900;
        }

        .persona-card.unmatch .persona-list li::before {
            content: "✕";
            color: #94A3B8;
            font-weight: 900;
        }

        /* 12. 行业权威背书网格 */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .trust-card {
            background: #FFFFFF;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            text-align: center;
        }

        .trust-card-icon {
            font-size: 26px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .trust-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .trust-card p {
            font-size: 13px;
            color: var(--text-soft);
            line-height: 1.5;
        }

        /* 13. FAQ 手风琴折叠面板 */
        .faq-accordion-box {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-header {
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .faq-icon-arrow {
            font-size: 18px;
            color: #059669;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon-arrow {
            transform: rotate(180deg);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: #FAFAFA;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-body {
            max-height: 220px;
            border-top-color: var(--border-light);
        }

        .faq-inner-text {
            padding: 18px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 14. 试用申请转化区与订阅 App */
        .cta-action-section {
            background: linear-gradient(135deg, #0B132B 0%, #162447 100%);
            color: #FFFFFF;
            padding: 70px 0;
            border-radius: var(--radius-xl);
            margin: 40px auto 60px;
            box-shadow: 0 24px 48px -12px rgba(11, 19, 43, 0.25);
        }

        .cta-box-inner {
            max-width: 960px;
            margin: 0 auto;
            text-align: center;
            padding: 0 20px;
        }

        .cta-box-inner h2 {
            font-size: 34px;
            font-weight: 900;
            margin-bottom: 14px;
            color: #FFFFFF;
        }

        .cta-box-inner p {
            font-size: 16px;
            color: #CBD5E1;
            margin-bottom: 34px;
            line-height: 1.7;
        }

        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr auto;
            gap: 12px;
            max-width: 820px;
            margin: 0 auto 20px;
        }

        .cta-input, .cta-select {
            width: 100%;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-size: 14px;
            outline: none;
            transition: var(--transition-smooth);
        }

        .cta-input::placeholder {
            color: #94A3B8;
        }

        .cta-input:focus, .cta-select:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.14);
        }

        .cta-select option {
            background: var(--primary);
            color: #FFFFFF;
        }

        .cta-tip-note {
            font-size: 12px;
            color: #94A3B8;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        /* 统一页脚 */
        .site-footer {
            background: #0B132B;
            color: #94A3B8;
            font-size: 14px;
            border-top: 1px solid #1E293B;
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-title {
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: #94A3B8;
            margin-bottom: 18px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 18px;
            position: relative;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        .footer-cert-tags {
            display: flex;
            gap: 14px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-grid, .stream-grid, .case-story-card {
                grid-template-columns: 1fr;
            }
            .advantage-grid, .arch-grid, .updates-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-badges-grid, .process-grid, .metric-strip-box, .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-card::after {
                display: none;
            }
            .media-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-form-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 14px;
            }
            .nav-links.show {
                display: flex;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .coupon-val {
                font-size: 40px;
            }
            .advantage-grid, .arch-grid, .updates-grid, .persona-grid {
                grid-template-columns: 1fr;
            }
            .topic-badges-grid, .process-grid, .metric-strip-box, .trust-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .media-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-form-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom-bar {
                flex-direction: column;
                text-align: center;
            }
        }