/* roulang page: index */
:root {
            --primary: #1E3A8A;
            --primary-hover: #1D4ED8;
            --emerald: #059669;
            --emerald-light: #10B981;
            --dark: #0F172A;
            --dark-card: #1E293B;
            --slate-text: #334155;
            --slate-muted: #64748B;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --border: #E2E8F0;
            --gold-accent: #D97706;
            --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 20px -3px rgba(15, 23, 42, 0.08);
            --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font-stack);
            color: var(--slate-text);
            background-color: var(--bg-light);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, background-color 0.2s;
        }

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

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Top Bar */
        .top-bar {
            height: 36px;
            background-color: #F1F5F9;
            font-size: 13px;
            color: var(--slate-muted);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }

        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--emerald);
            border-radius: 50%;
            display: inline-block;
        }

        /* Main Nav */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--slate-text);
            padding: 6px 0;
            position: relative;
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            background-color: var(--primary);
            color: #ffffff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
        }

        .nav-cta:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 10px rgba(30, 58, 138, 0.2);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        /* 基础 Section */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: #EFF6FF;
            padding: 4px 12px;
            border-radius: 9999px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 16px;
        }

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

        /* Hero：黑金高阶质感与等级体系 */
        .hero-section {
            background: #0B0F19 url('/assets/images/ca17df9f204dfdc7.webp') center/cover no-repeat;
            padding: 100px 0 90px;
            color: #F8FAFC;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.94) 0%, rgba(15, 23, 42, 0.88) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(217, 119, 6, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.4);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 24px;
        }

        .hero-badge-icon {
            color: #FBBF24;
            font-size: 14px;
            font-weight: 800;
        }

        .hero-badge-text {
            color: #FDE68A;
            font-size: 13px;
            font-weight: 600;
        }

        .hero-title {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 22px;
            letter-spacing: -0.5px;
        }

        .hero-intro {
            font-size: 16px;
            color: #CBD5E1;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 13px 28px;
            background: var(--gold-gradient);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 14px rgba(217, 119, 6, 0.4);
            transition: all 0.25s;
        }

        .btn-gold:hover {
            opacity: 0.95;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.5);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 26px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.4);
        }

        /* 权益徽章卡 */
        .tier-card {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
        }

        .tier-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 20px;
            margin-bottom: 20px;
        }

        .tier-name {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
        }

        .tier-level {
            font-size: 12px;
            padding: 3px 10px;
            background: rgba(245, 158, 11, 0.2);
            color: #FBBF24;
            border: 1px solid rgba(245, 158, 11, 0.4);
            border-radius: 999px;
            font-weight: 600;
        }

        .tier-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .tier-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: #E2E8F0;
        }

        .tier-item-icon {
            color: var(--emerald-light);
            font-weight: bold;
            line-height: 1.5;
        }

        /* 板块 2：品类入口 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .category-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all 0.3s ease;
            position: relative;
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #BFDBFE;
        }

        .category-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: #EFF6FF;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .category-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .category-desc {
            font-size: 14px;
            color: var(--slate-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块 3：技术与架构介绍 */
        .architecture-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .architecture-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .stat-badge-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 28px;
        }

        .stat-badge {
            background: #FFFFFF;
            border: 1px solid var(--border);
            padding: 16px;
            border-radius: var(--radius-sm);
            text-align: center;
        }

        .stat-badge-val {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stat-badge-lbl {
            font-size: 12px;
            color: var(--slate-muted);
        }

        /* 板块 4：核心效能 6卡片 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #93C5FD;
        }

        .feature-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .feature-tag {
            font-size: 12px;
            padding: 3px 10px;
            background: #ECFDF5;
            color: var(--emerald);
            border-radius: 999px;
            font-weight: 600;
        }

        .feature-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .feature-desc {
            font-size: 14px;
            color: var(--slate-text);
            line-height: 1.7;
        }

        /* 板块 5：应用矩阵三列对比 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }

        .matrix-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .matrix-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 16px 32px rgba(30, 58, 138, 0.12);
            transform: scale(1.02);
            z-index: 2;
        }

        .featured-pill {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .matrix-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .matrix-desc {
            font-size: 14px;
            color: var(--slate-muted);
            margin-bottom: 24px;
            min-height: 44px;
        }

        .matrix-spec-list {
            flex-grow: 1;
            margin-bottom: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .matrix-spec-item {
            font-size: 14px;
            color: var(--slate-text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .matrix-spec-item::before {
            content: "✓";
            color: var(--emerald);
            font-weight: bold;
        }

        /* 板块 6：深色理念区 */
        .dark-philosophy {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 90px 0;
        }

        .philosophy-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .philosophy-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .philosophy-item-title {
            font-size: 16px;
            font-weight: 700;
            color: #93C5FD;
            margin-bottom: 6px;
        }

        .philosophy-item-desc {
            font-size: 14px;
            color: #CBD5E1;
            line-height: 1.6;
        }

        /* 板块 7：指标对比数据栏 */
        .kpi-section {
            background-color: #F1F5F9;
            padding: 60px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .kpi-item {
            padding: 10px;
        }

        .kpi-val {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .kpi-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .kpi-desc {
            font-size: 13px;
            color: var(--slate-muted);
        }

        /* 板块 8：实施图谱/故事 */
        .stories-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .story-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .story-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .story-body {
            padding: 28px;
        }

        .story-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: #EFF6FF;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .story-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 14px;
        }

        .story-metric-box {
            background: #F8FAFC;
            border: 1px dashed var(--border);
            border-radius: var(--radius-sm);
            padding: 14px;
            margin: 16px 0;
            font-size: 13px;
            color: var(--slate-text);
        }

        /* 板块 9：用户真实评价口碑榜 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .review-rating {
            color: #F59E0B;
            font-size: 14px;
            margin-bottom: 14px;
        }

        .review-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--slate-text);
            margin-bottom: 20px;
            font-style: normal;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #E2E8F0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--slate-muted);
        }

        .user-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
        }

        .user-role {
            font-size: 12px;
            color: var(--slate-muted);
        }

        /* 板块 10：资讯与管线洞察 */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .insight-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }

        .insight-img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }

        .insight-content {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .insight-meta {
            font-size: 12px;
            color: var(--slate-muted);
            margin-bottom: 8px;
        }

        .insight-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .insight-summary {
            font-size: 13px;
            color: var(--slate-text);
            line-height: 1.6;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        /* 板块 11：安全保障与 SLA 承诺 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

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

        .security-icon {
            font-size: 28px;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .security-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .security-desc {
            font-size: 13px;
            color: var(--slate-muted);
            line-height: 1.5;
        }

        /* 板块 12：常见疑问 FAQ */
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-toggle {
            font-size: 20px;
            font-weight: 400;
            color: var(--slate-muted);
            transition: transform 0.2s;
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--slate-text);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }

        /* 预约与转化收口区 */
        .contact-card-box {
            background: #0F172A;
            color: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 60px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .contact-info-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .contact-info-desc {
            font-size: 15px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .contact-features {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .contact-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #CBD5E1;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-label {
            font-size: 13px;
            font-weight: 600;
            color: #E2E8F0;
        }

        .form-input, .form-select {
            height: 44px;
            background: #1E293B;
            border: 1px solid #334155;
            border-radius: var(--radius-sm);
            padding: 0 14px;
            color: #FFFFFF;
            font-size: 14px;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-input:focus, .form-select:focus {
            border-color: #38BDF8;
        }

        .form-submit-btn {
            height: 48px;
            margin-top: 10px;
            background: var(--emerald);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .form-submit-btn:hover {
            background-color: var(--emerald-light);
        }

        /* Footer */
        .site-footer {
            background: #0B0F19;
            color: #94A3B8;
            padding: 64px 0 28px;
            border-top: 1px solid #1E293B;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-p {
            line-height: 1.7;
            font-size: 13px;
            color: #64748B;
            margin-bottom: 16px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-contact-item {
            font-size: 13px;
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid #1E293B;
            text-align: center;
            font-size: 12px;
            color: #475569;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
            }
            .category-grid, .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid, .matrix-grid, .insights-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .philosophy-grid, .architecture-wrap, .contact-card-box {
                grid-template-columns: 1fr;
            }
            .matrix-card.featured {
                transform: none;
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-cta {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .top-bar {
                display: none;
            }
            .hero-title {
                font-size: 32px;
            }
            .category-grid, .features-grid, .matrix-grid, .insights-grid, .reviews-grid, .stories-grid, .security-grid {
                grid-template-columns: 1fr;
            }
            .contact-card-box {
                padding: 32px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }