/* roulang page: index */
:root {
            --primary: #00D084;
            --primary-hover: #00B774;
            --accent: #0052FF;
            --accent-hover: #0043D6;
            --dark: #0B0E14;
            --dark-card: #131926;
            --dark-border: #1E293B;
            --light-bg: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --white: #FFFFFF;
            --border-color: #E2E8F0;
            --live-red: #FF3B30;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.15);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--light-bg);
            line-height: 1.75;
            -webkit-text-size-adjust: 100%;
        }

        body {
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            transition: var(--transition);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部通栏公告 */
        .top-bar {
            background-color: #06080C;
            color: var(--text-light);
            font-size: 0.85rem;
            padding: 8px 0;
            border-bottom: 1px solid var(--dark-border);
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-live-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--white);
        }
        .live-dot {
            width: 8px;
            height: 8px;
            background-color: var(--live-red);
            border-radius: 50%;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.3); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        /* 导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.02em;
        }
        .brand-logo-badge {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--white);
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 700;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 32px;
        }
        .nav-link {
            font-weight: 600;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 按钮体系 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            min-height: 44px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--dark);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 208, 132, 0.3);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--white);
        }
        .btn-accent:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 82, 255, 0.3);
        }
        .btn-outline-white {
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: var(--white);
        }
        .btn-outline-white:hover {
            border-color: var(--white);
            background-color: rgba(255, 255, 255, 0.1);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            color: var(--text-main);
        }

        /* 通用板块规范 */
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-dark {
            background-color: var(--dark);
            color: var(--white);
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-header {
            max-width: 800px;
            margin: 0 auto 56px auto;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(0, 82, 255, 0.08);
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-dark .section-tag {
            background: rgba(0, 208, 132, 0.15);
            color: var(--primary);
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .section-dark .section-desc {
            color: var(--text-light);
        }

        /* Hero 品牌旗舰店叠层结构 */
        .hero-banner {
            position: relative;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.75) 0%, rgba(11, 14, 20, 0.95) 100%), url('/assets/images/f9e91d39d74484f5.png') center/cover no-repeat;
            color: var(--white);
            padding: 120px 0 140px 0;
            overflow: hidden;
        }
        .hero-content {
            max-width: 880px;
            margin: 0 auto;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
        }
        .hero-title span {
            background: linear-gradient(90deg, var(--primary), #38BDF8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-description {
            font-size: 1.15rem;
            color: #CBD5E1;
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        
        /* 旗舰导航条叠层 */
        .flagship-nav-bar {
            background: rgba(19, 25, 38, 0.85);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            max-width: 1040px;
            margin: 0 auto;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
        }
        .flagship-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .flagship-icon {
            width: 40px;
            height: 40px;
            background: rgba(0, 208, 132, 0.15);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-weight: bold;
            font-size: 1.1rem;
        }
        .flagship-text h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--white);
        }
        .flagship-text p {
            font-size: 0.75rem;
            color: var(--text-light);
            line-height: 1.3;
        }

        /* 闪购/更新倒计时条 */
        .flash-schedule-strip {
            background: linear-gradient(90deg, #0F172A, #1E293B);
            color: var(--white);
            padding: 24px 0;
            border-bottom: 1px solid var(--dark-border);
        }
        .flash-grid {
            display: grid;
            grid-template-columns: 280px 1fr auto;
            gap: 24px;
            align-items: center;
        }
        .flash-badge {
            background: var(--live-red);
            color: var(--white);
            font-size: 0.8rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 4px;
        }
        .flash-event-slider {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 4px;
            scrollbar-width: none;
        }
        .flash-event-slider::-webkit-scrollbar {
            display: none;
        }
        .flash-match-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            min-width: 220px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .flash-match-title {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .flash-match-teams {
            font-weight: 700;
            font-size: 0.95rem;
            display: flex;
            justify-content: space-between;
        }

        /* 痛点与体验对比网格 */
        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .pain-card-tag {
            font-size: 0.75rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .tag-bad { background: #FEE2E2; color: #DC2626; }
        .tag-good { background: #DCFCE7; color: #16A34A; }
        .pain-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 产品技术展示区 */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .feature-img-wrapper {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-img-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .tech-spec-box {
            background: #EFF6FF;
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
        }
        .tech-spec-box p {
            font-size: 0.95rem;
            color: #1E40AF;
            font-weight: 600;
        }

        /* 核心优势栅格 */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .adv-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
        }
        .adv-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
        }
        .adv-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 16px;
        }
        .adv-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .adv-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.65;
        }

        /* 终端覆盖卡片 */
        .terminals-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .terminal-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .terminal-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .terminal-icon-box {
            width: 72px;
            height: 72px;
            background: #F1F5F9;
            border-radius: 50%;
            margin: 0 auto 20px auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent);
        }
        .terminal-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .terminal-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 24px;
            line-height: 1.6;
        }

        /* 沉浸式战术理念区 */
        .concept-showcase {
            background: linear-gradient(180deg, #0B0E14 0%, #171E2C 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
        }
        .concept-visual {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--dark-border);
        }
        .concept-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        /* 用户故事体验 */
        .stories-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .story-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px;
            position: relative;
        }
        .story-author {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }
        .story-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #E2E8F0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--accent);
        }
        .story-meta h4 {
            font-size: 1.05rem;
            font-weight: 700;
        }
        .story-meta span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .story-card blockquote {
            font-size: 0.95rem;
            color: var(--text-main);
            line-height: 1.7;
            font-style: italic;
        }

        /* 关键指标数据条 */
        .metrics-bar {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            padding: 48px 0;
            border-radius: var(--radius-md);
            color: var(--white);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* 真实球迷评价 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .review-stars {
            color: #F59E0B;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .review-text {
            font-size: 0.92rem;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .review-user {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid #F1F5F9;
            padding-top: 12px;
        }

        /* 体育资讯前瞻 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .news-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-img {
            height: 200px;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-body {
            padding: 24px;
        }
        .news-meta {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .news-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 常见问题手风琴 */
        .faq-accordion {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            background: var(--white);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-icon {
            transition: var(--transition);
            font-size: 1.2rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        /* 底部 CTA 转化区 */
        .bottom-cta {
            background: linear-gradient(135deg, #0B0E14 0%, #002266 100%);
            color: var(--white);
            padding: 80px 0;
            text-align: center;
            border-top: 1px solid var(--dark-border);
        }
        .bottom-cta-box {
            max-width: 760px;
            margin: 0 auto;
        }
        .bottom-cta h2 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        .bottom-cta p {
            font-size: 1.1rem;
            color: #CBD5E1;
            margin-bottom: 36px;
        }

        /* 页脚 */
        .site-footer {
            background-color: #06080C;
            color: var(--text-light);
            padding: 72px 0 32px 0;
            border-top: 1px solid var(--dark-border);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 16px;
        }
        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 20px;
            color: var(--text-light);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 20px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 12px;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid var(--dark-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.8rem; }
            .flagship-nav-bar { grid-template-columns: repeat(2, 1fr); }
            .pain-points-grid { grid-template-columns: repeat(2, 1fr); }
            .advantages-grid { grid-template-columns: repeat(2, 1fr); }
            .concept-showcase { grid-template-columns: 1fr; }
            .flash-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .section { padding: 64px 0; }
            .nav-menu { display: none; }
            .mobile-menu-btn { display: block; }
            .hero-title { font-size: 2.2rem; }
            .hero-description { font-size: 1rem; }
            .flagship-nav-bar { grid-template-columns: 1fr; }
            .pain-points-grid { grid-template-columns: 1fr; }
            .feature-split { grid-template-columns: 1fr; }
            .advantages-grid { grid-template-columns: 1fr; }
            .terminals-grid { grid-template-columns: 1fr; }
            .stories-grid { grid-template-columns: 1fr; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .reviews-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }