/* roulang page: index */
:root {
            --bg-base: #0D1117;
            --bg-surface: #161B22;
            --bg-card: #1F242C;
            --primary: #00F5A0;
            --primary-glow: rgba(0, 245, 160, 0.25);
            --secondary: #7928CA;
            --accent: #FF5E3A;
            --text-high: #F0F6FC;
            --text-muted: #8B949E;
            --text-dark: #484F58;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 245, 160, 0.4);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --radius-md: 12px;
            --radius-sm: 6px;
            --radius-pill: 9999px;
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font-stack);
            background-color: var(--bg-base);
            color: var(--text-high);
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }

        body {
            line-height: 1.65;
            overflow-x: hidden;
        }

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

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

        button, input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 顶部通栏公告 */
        .top-notice-bar {
            background: #11161d;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.825rem;
            color: var(--text-muted);
            padding: 0.5rem 0;
        }
        .top-notice-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .notice-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
        }
        .notice-badge::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--primary);
        }

        /* 吸顶主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.25rem;
            color: #ffffff;
            letter-spacing: -0.5px;
        }
        .logo-symbol {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-weight: 900;
            box-shadow: 0 0 16px var(--primary-glow);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }
        .nav-link {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        /* 移动端菜单控制 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-high);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }

        /* 按钮与徽章 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.6rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition-smooth);
            min-height: 46px;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #000000;
            border: 1px solid var(--primary);
            box-shadow: 0 4px 16px var(--primary-glow);
        }
        .btn-primary:hover {
            background-color: #1affad;
            box-shadow: 0 6px 24px rgba(0, 245, 160, 0.45);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-high);
            border: 1px solid var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 245, 160, 0.05);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            border-radius: var(--radius-pill);
            letter-spacing: 0.5px;
        }
        .badge-cyan {
            background: rgba(0, 245, 160, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 245, 160, 0.25);
        }
        .badge-purple {
            background: rgba(121, 40, 202, 0.15);
            color: #c084fc;
            border: 1px solid rgba(121, 40, 202, 0.3);
        }

        /* Section 通用规范 */
        section {
            padding: 5.5rem 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-surface);
        }
        .section-header {
            margin-bottom: 3.5rem;
        }
        .section-title {
            font-size: 2.15rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .section-title span {
            color: var(--primary);
        }
        .section-desc {
            color: var(--text-muted);
            max-width: 760px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* 1. Hero 板块：5:7 斜向错位大图布局 */
        .hero-section {
            padding: 4.5rem 0 6rem 0;
            background: radial-gradient(circle at 80% 20%, rgba(121, 40, 202, 0.18) 0%, transparent 60%),
                        radial-gradient(circle at 10% 80%, rgba(0, 245, 160, 0.1) 0%, transparent 50%),
                        var(--bg-base);
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 3.5rem;
            align-items: center;
        }
        .hero-text h1 {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
        }
        .hero-text h1 span {
            background: linear-gradient(90deg, var(--primary) 0%, #38ef7d 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            color: var(--text-muted);
            font-size: 1.1rem;
            line-height: 1.75;
            margin-bottom: 2.25rem;
        }
        .hero-actions {
            display: flex;
            gap: 1.25rem;
            margin-bottom: 2.75rem;
            flex-wrap: wrap;
        }
        .hero-kpis {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-light);
        }
        .kpi-item h4 {
            font-size: 1.85rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.25rem;
        }
        .kpi-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .hero-visual-skew {
            position: relative;
            transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
            transition: var(--transition-smooth);
        }
        .hero-visual-skew:hover {
            transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
        }
        .hero-img-wrap {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-hover);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 245, 160, 0.15);
        }
        .hero-img-wrap img {
            width: 100%;
            height: 480px;
            object-fit: cover;
        }
        .hero-floating-card {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background: rgba(31, 36, 44, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.75rem;
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
        }
        .hero-floating-card .indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        /* 2. 佣金与用户回馈亮点 (蓝图要求) */
        .rebate-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .rebate-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 2.25rem;
            transition: var(--transition-smooth);
            position: relative;
        }
        .rebate-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 245, 160, 0.1);
        }
        .rebate-rate {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent);
            margin: 1rem 0 0.5rem 0;
            line-height: 1;
        }
        .rebate-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .rebate-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 3. 痛点对比卡片 (Pain Points) */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }
        .pain-card {
            background: linear-gradient(180deg, rgba(255, 94, 58, 0.05) 0%, rgba(31, 36, 44, 0.8) 100%);
            border: 1px solid rgba(255, 94, 58, 0.2);
            border-radius: var(--radius-md);
            padding: 2rem;
            transition: var(--transition-smooth);
        }
        .pain-card:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(255, 94, 58, 0.15);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 900;
            margin-bottom: 1.25rem;
        }
        .pain-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .pain-card p {
            color: var(--text-muted);
            font-size: 0.925rem;
        }

        /* 4. 平台级解决方案与架构 (Solution) */
        .solution-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        .solution-img-box {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .solution-img-box img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .feature-bullets {
            list-style: none;
            margin-top: 1.75rem;
        }
        .feature-bullet-item {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.25rem;
        }
        .bullet-icon {
            width: 24px;
            height: 24px;
            background: rgba(0, 245, 160, 0.15);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.75rem;
            margin-top: 2px;
        }
        .bullet-text h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .bullet-text p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 5. 核心能力网格 (Key Advantages) */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 2.25rem;
            transition: var(--transition-smooth);
        }
        .advantage-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 10px 24px rgba(0, 245, 160, 0.12);
        }
        .adv-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.75rem;
            display: block;
        }
        .advantage-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .advantage-card p {
            font-size: 0.925rem;
            color: var(--text-muted);
        }

        /* 6. 推广物料与赛事竞技接入 (蓝图物料 + 产品矩阵) */
        .material-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .material-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition-smooth);
        }
        .material-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
        }
        .material-thumb {
            height: 200px;
            overflow: hidden;
        }
        .material-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .material-card:hover .material-thumb img {
            transform: scale(1.05);
        }
        .material-body {
            padding: 1.75rem;
        }
        .material-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .material-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
        }

        /* 7. 结算说明与多端操作流程 (Settlement & Flow) */
        .timeline-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
            margin-top: 1rem;
        }
        .timeline-step {
            background: var(--bg-card);
            padding: 2rem 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            position: relative;
        }
        .step-num {
            font-size: 2.25rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.1);
            margin-bottom: 0.5rem;
            line-height: 1;
        }
        .timeline-step h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .timeline-step p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* 8. 硬核沉浸理念区 (Immersive Philosophy) */
        .immersive-band {
            background: linear-gradient(180deg, #05080b 0%, #161b22 100%);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 6rem 0;
            text-align: center;
        }
        .immersive-band h2 {
            font-size: 2.4rem;
            font-weight: 800;
            max-width: 900px;
            margin: 0 auto 1.5rem auto;
            line-height: 1.3;
        }
        .immersive-band p {
            max-width: 780px;
            margin: 0 auto 2.5rem auto;
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 9. 核心成果与数据条 (Metrics & KPI Strip) */
        .metrics-strip {
            background: #11151c;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 3rem 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .metric-cell h3 {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 0.25rem;
            letter-spacing: -1px;
        }
        .metric-cell p {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 10. 玩家与公会成功案例 (Case Studies) */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
        }
        .case-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .case-img {
            height: 240px;
            overflow: hidden;
        }
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-content {
            padding: 2.25rem;
            flex: 1;
        }
        .case-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .case-quote {
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-left: 3px solid var(--primary);
            padding-left: 1rem;
            margin: 1rem 0 1.5rem 0;
        }

        /* 11. 全生态用户口碑证言 (Testimonials) */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 2rem;
        }
        .testi-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.25rem;
        }
        .avatar-initial {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 245, 160, 0.1);
            color: var(--primary);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .testi-header h4 {
            font-size: 1rem;
            font-weight: 700;
        }
        .testi-header span {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: block;
        }
        .testimonial-card p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 12. 适用人群与场景矩阵 (Target Audiences) */
        .target-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .target-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            transition: var(--transition-smooth);
        }
        .target-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .target-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .target-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* 13. 快讯动态摘要 (News Section) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .news-thumb {
            height: 180px;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-inner {
            padding: 1.5rem;
        }
        .news-inner time {
            font-size: 0.75rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: block;
        }
        .news-inner h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .news-inner p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* 14. 常见问题手风琴 (FAQ) */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 1.35rem 1.75rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-high);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-toggle-icon {
            font-size: 1.25rem;
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-toggle-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: rgba(0, 0, 0, 0.15);
        }
        .faq-answer-inner {
            padding: 1rem 1.75rem 1.5rem 1.75rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* 15. 加入与转化入口 (Final CTA) */
        .cta-box {
            background: radial-gradient(circle at 50% 0%, rgba(0, 245, 160, 0.15) 0%, transparent 70%),
                        linear-gradient(180deg, #1f242c 0%, #161b22 100%);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-md);
            padding: 4.5rem 2rem;
            text-align: center;
            box-shadow: 0 0 40px rgba(0, 245, 160, 0.08);
        }
        .cta-box h2 {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 2.25rem auto;
        }

        /* 页脚统一规范 */
        .site-footer {
            background: #090c10;
            border-top: 1px solid var(--border-light);
            padding: 4.5rem 0 2rem 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3.5rem;
        }
        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
        }
        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }
        .footer-links-col h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 1.25rem;
        }
        .footer-links-col ul {
            list-style: none;
        }
        .footer-links-col li {
            margin-bottom: 0.75rem;
        }
        .footer-links-col a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 0.75rem;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.825rem;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .hero-visual-skew {
                transform: none;
            }
            .hero-img-wrap img {
                height: 380px;
            }
            .solution-split {
                grid-template-columns: 1fr;
            }
            .advantage-grid, .material-grid, .rebate-grid, .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-steps, .target-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-notice-bar {
                display: none;
            }
            .nav-links, .nav-actions .btn {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .hero-text h1 {
                font-size: 2.15rem;
            }
            .hero-kpis {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .pain-grid, .rebate-grid, .advantage-grid, .material-grid, .cases-grid, .testimonials-grid, .target-grid, .news-grid, .timeline-steps {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            /* 移动端汉堡抽屉 */
            .mobile-drawer {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: #161b22;
                border-bottom: 1px solid var(--border-light);
                padding: 1.5rem;
                display: none;
                flex-direction: column;
                gap: 1.25rem;
                z-index: 999;
            }
            .mobile-drawer.open {
                display: flex;
            }
        }