/* roulang page: index */
:root {
            --primary-900: #1e0a3c;
            --primary-800: #3b0764;
            --primary-700: #581c87;
            --primary-600: #7c3aed;
            --primary-500: #8b5cf6;
            --accent-cyan: #06b6d4;
            --accent-cyan-light: #22d3ee;
            --accent-gold: #f59e0b;
            --bg-darker: #07090e;
            --bg-dark: #0b0f19;
            --bg-card: rgba(17, 24, 39, 0.7);
            --bg-card-hover: rgba(30, 41, 59, 0.85);
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(124, 58, 237, 0.5);
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 25px rgba(124, 58, 237, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-text-size-adjust: 100%;
        }

        body {
            overflow-x: hidden;
            width: 100%;
            background-color: var(--bg-dark);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部通栏导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 25, 0.88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .top-bar {
            background-color: var(--bg-darker);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 13px;
            color: var(--text-dim);
            padding: 6px 0;
        }

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

        .main-nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

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

        .brand-indicator {
            width: 12px;
            height: 12px;
            border-radius: 3px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--primary-600));
            box-shadow: 0 0 10px var(--primary-600);
        }

        .nav-links {
            display: flex;
            gap: 28px;
            list-style: none;
            align-items: center;
        }

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

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            border: 1px solid transparent;
            min-height: 44px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-600) 0%, #4f46e5 100%);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
            color: #ffffff;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, #0284c7 100%);
            color: #04101c;
            font-weight: 700;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(6, 182, 212, 0.4);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            border-color: var(--border-light);
            color: var(--text-main);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-main);
        }

        /* 通用板块排版规则 */
        section {
            padding: 90px 0;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
        }

        .section-header {
            max-width: 760px;
            margin: 0 auto 54px auto;
            text-align: center;
        }

        .badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 9999px;
            background: rgba(124, 58, 237, 0.15);
            color: var(--accent-cyan-light);
            border: 1px solid rgba(124, 58, 237, 0.3);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #ffffff;
            letter-spacing: -0.5px;
        }

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

        /* 板块一：首屏裂变邀请与Hero */
        .hero-section {
            padding: 100px 0 110px 0;
            background: radial-gradient(circle at 50% 20%, rgba(88, 28, 135, 0.35) 0%, rgba(11, 15, 25, 0) 70%),
                        linear-gradient(rgba(11, 15, 25, 0.75), rgba(11, 15, 25, 0.95)),
                        url('/assets/images/94b66d0fc580674a.jpg') center/cover no-repeat;
            text-align: center;
        }

        .hero-content {
            max-width: 880px;
            margin: 0 auto;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 22px;
            letter-spacing: -1px;
            background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 40px;
        }

        .hero-invite-box {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 30px;
            max-width: 680px;
            margin: 0 auto;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-glow);
        }

        .invite-reward-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .reward-info {
            text-align: left;
        }

        .reward-label {
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 600;
        }

        .reward-val {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
        }

        .progress-container {
            margin-bottom: 24px;
            text-align: left;
        }

        .progress-label-bar {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .progress-track {
            height: 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.1);
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            width: 78%;
            background: linear-gradient(90deg, var(--primary-600), var(--accent-cyan));
            border-radius: 999px;
        }

        .hero-action-group {
            display: flex;
            gap: 16px;
            justify-content: center;
        }

        /* 板块二：入口矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .matrix-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .matrix-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-cyan);
            background: var(--bg-card-hover);
        }

        .matrix-icon {
            width: 48px;
            height: 48px;
            background: rgba(124, 58, 237, 0.15);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--accent-cyan);
        }

        .matrix-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #ffffff;
        }

        .matrix-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 18px;
        }

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

        /* 板块三：最新动态 (Table/KPI 样式) */
        .news-table-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .news-row {
            display: flex;
            align-items: center;
            padding: 20px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background 0.25s ease;
        }

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

        .news-row:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .news-tag {
            font-size: 12px;
            padding: 3px 8px;
            border-radius: 4px;
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent-cyan);
            margin-right: 20px;
            white-space: nowrap;
        }

        .news-content-text {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
        }

        .news-date {
            font-size: 13px;
            color: var(--text-dim);
            margin-left: 20px;
            white-space: nowrap;
        }

        .news-action {
            margin-left: 24px;
        }

        /* 板块四：精选分类体系 (3 卡片高亮) */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .tier-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 36px 30px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s ease;
        }

        .tier-card.featured {
            border-color: var(--primary-600);
            background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.8) 100%);
            box-shadow: var(--shadow-glow);
            transform: scale(1.02);
        }

        .featured-ribbon {
            position: absolute;
            top: -12px;
            right: 28px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--primary-600));
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 9999px;
            letter-spacing: 0.5px;
        }

        .tier-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tier-subtitle {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.5;
        }

        .tier-features {
            list-style: none;
            margin-bottom: 32px;
            flex: 1;
        }

        .tier-features li {
            font-size: 14px;
            color: var(--text-muted);
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tier-features li::before {
            content: '✓';
            color: var(--accent-cyan);
            font-weight: 700;
        }

        /* 板块五：资讯卡片与深度解析 */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .info-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
        }

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

        .info-body {
            padding: 24px;
        }

        .info-meta {
            font-size: 12px;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .info-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            color: #ffffff;
        }

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

        /* 板块六：版本更新与技术演化 */
        .log-timeline {
            max-width: 900px;
            margin: 0 auto;
            border-left: 2px solid rgba(124, 58, 237, 0.3);
            padding-left: 32px;
        }

        .log-item {
            position: relative;
            margin-bottom: 40px;
        }

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

        .log-dot {
            position: absolute;
            left: -39px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-cyan);
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .log-tag-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }

        .log-ver {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
        }

        .log-time {
            font-size: 13px;
            color: var(--text-dim);
        }

        .log-body {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块七：App/多端互联与全景支持 */
        .multi-dev-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .dev-screen-img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-subtle);
        }

        .dev-points {
            list-style: none;
            margin-top: 24px;
        }

        .dev-point-item {
            display: flex;
            gap: 16px;
            margin-bottom: 20px;
        }

        .dev-badge-num {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(124, 58, 237, 0.2);
            color: var(--accent-cyan-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .dev-text-h {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 4px;
        }

        .dev-text-p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块八：功能对比选型表 */
        .compare-table-wrap {
            overflow-x: auto;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            background: var(--bg-card);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

        .compare-table th,
        .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .compare-table th {
            background: rgba(0, 0, 0, 0.2);
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
        }

        .compare-table th.highlight-col,
        .compare-table td.highlight-col {
            background: rgba(124, 58, 237, 0.08);
            border-left: 1px solid rgba(124, 58, 237, 0.3);
            border-right: 1px solid rgba(124, 58, 237, 0.3);
        }

        .compare-table td.highlight-col {
            font-weight: 600;
            color: var(--accent-cyan-light);
        }

        .check-yes {
            color: #10b981;
            font-weight: 700;
        }

        .check-no {
            color: var(--text-dim);
        }

        /* 板块九：成果数据沉浸条 */
        .stats-stripe {
            background: linear-gradient(90deg, #111827 0%, #1e1b4b 50%, #0f172a 100%);
            border-top: 1px solid rgba(124, 58, 237, 0.3);
            border-bottom: 1px solid rgba(124, 58, 237, 0.3);
            padding: 56px 0;
        }

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

        .stat-figure {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 板块十：常见问题答疑 (FAQ) */
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.25s ease;
        }

        .faq-item[open] {
            border-color: rgba(124, 58, 237, 0.4);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::-webkit-details-marker {
            display: none;
        }

        .faq-icon-arrow {
            transition: transform 0.25s ease;
            font-size: 12px;
            color: var(--accent-cyan);
        }

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

        .faq-answer {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块十一：收口行动区与线索表单 */
        .cta-final-box {
            background: linear-gradient(135deg, rgba(88, 28, 135, 0.6) 0%, rgba(15, 23, 42, 0.95) 100%);
            border: 1px solid rgba(124, 58, 237, 0.4);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            max-width:880px;
            margin: 0 auto;
            box-shadow: var(--shadow-glow);
        }

        .cta-final-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #ffffff;
        }

        .cta-final-desc {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 580px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-input {
            flex: 1 1 200px;
            height: 48px;
            background: rgba(11, 15, 25, 0.7);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 0 16px;
            color: #ffffff;
            font-size: 14px;
            outline: none;
            transition: border-color 0.25s ease;
        }

        .cta-input:focus {
            border-color: var(--accent-cyan);
        }

        /* 统一页脚 */
        .site-footer {
            background-color: var(--bg-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 70px 0 30px 0;
            font-size: 14px;
            color: var(--text-dim);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand-title {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-brand-desc {
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

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

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

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

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

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

        .footer-bottom {
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 24px;
            cursor: pointer;
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .tier-card.featured {
                transform: none;
            }
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header .top-bar {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                padding: 24px;
                border-bottom: 1px solid var(--border-light);
                gap: 18px;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-title {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .multi-dev-wrap {
                grid-template-columns: 1fr;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input, .cta-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }