/* 基础变量定义 */
        :root {
            --primary-blue: #3b82f6;
            /* 主色调蓝 */
            --primary-blue-dark: #2563eb;
            --accent-orange: #f97316;
            /* 按钮亮橙色 */
            --accent-orange-hover: #ea580c;
            --bg-gray: #f3f4f6;
            /* 页面底色 */
            --text-main: #1f2937;
            --text-muted: #6b7280;
            --border-color: #e5e7eb;
        }

        /* 样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        body {
            background-color: var(--bg-gray);
            color: var(--text-main);
            line-height: 1.5;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        /* 版心容器，限制最大宽度并居中 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* ================= 1. 顶部导航 ================= */
        header {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-links {
            display: flex;
            gap: 30px;
            font-size: 16px;
            font-weight: 500;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary-blue);
            border-bottom: 2px solid var(--primary-blue);
            padding-bottom: 23px;
        }

        /* ================= 2. 蓝色 Hero 区域 ================= */
        .hero {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            color: #fff;
            padding: 60px 0;
        }

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

        .hero-text {
            max-width: 60%;
        }

        .hero-text h1 {
            font-size: 36px;
            margin-bottom: 15px;
        }

        .hero-text p {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .hero-tags span {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 13px;
            margin-right: 10px;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 32px;
            font-weight: bold;
            margin-bottom: 5px;
        }

        .stat-item p {
            font-size: 13px;
            opacity: 0.8;
        }

        /* ================= 3. 赛事分类 Tabs ================= */
        .tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin: 30px 0;
        }

        .tab-btn {
            padding: 10px 30px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            background: #fff;
            cursor: pointer;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s;
        }

        .tab-btn.active {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
        }

        .tab-btn:hover:not(.active) {
            color: var(--primary-blue);
            border-color: var(--primary-blue);
        }

        /* ================= 4. 赛事模块标题 ================= */
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            margin-top: 40px;
            border-left: 4px solid var(--primary-blue);
            padding-left: 10px;
        }

        .section-header h2 {
            font-size: 20px;
        }

        .section-header a {
            font-size: 14px;
            color: var(--text-muted);
        }

        .section-header a:hover {
            color: var(--primary-blue);
        }

        /* ================= 5. 赛事对阵卡片 (Grid网格) ================= */
        .match-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .match-card {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            transition: transform 0.2s, box-shadow 0.2s;
            text-align: center;
            display: flex;
            flex-direction: column;
        }

        .match-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }

        .card-top {
            background: var(--primary-blue);
            color: #fff;
            font-size: 12px;
            padding: 6px 10px;
            display: flex;
            justify-content: space-between;
        }

        .card-top .status {
            background: #ff4d4f;
            padding: 2px 6px;
            border-radius: 4px;
        }

        .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .team {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .team img {
            width: 50px;
            height: 50px;
            object-fit: contain;
        }

        .team span {
            font-size: 15px;
            font-weight: bold;
        }

        .vs-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .vs-info .time {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 5px;
        }

        .vs-info .vs-text {
            font-size: 24px;
            font-weight: 900;
            color: #e5e7eb;
            font-style: italic;
        }

        .card-bottom {
            padding: 0 20px 20px;
        }

        .btn-watch {
            display: block;
            width: 100%;
            background: var(--accent-orange);
            color: #fff;
            padding: 10px 0;
            border-radius: 30px;
            font-weight: bold;
            transition: background 0.2s;
        }

        .btn-watch:hover {
            background: var(--accent-orange-hover);
        }

        /* ================= 6. 体育新闻资讯卡片 ================= */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .news-card {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
        }

        .news-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .news-card:hover img {
            transform: scale(1.05);
        }

        .news-info {
            padding: 15px;
        }

        .news-info h3 {
            font-size: 15px;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* 底部版权 */
        footer {
            background: #1f2937;
            color: #9ca3af;
            text-align: center;
            padding: 40px 0;
            margin-top: 60px;
            font-size: 13px;
        }

        /* ================= 移动端自适应优化 (针对屏幕宽度小于 768px 的设备) ================= */
        @media (max-width: 768px) {

            /* 1. 顶部导航：改为上下结构，链接支持横向滑动 */
            .nav-inner {
                flex-direction: column;
                height: auto;
                padding: 15px 0 5px;
                gap: 15px;
            }

            .nav-links {
                width: 100%;
                overflow-x: auto;
                justify-content: flex-start;
                padding-bottom: 5px;
                /* 隐藏移动端丑陋的滚动条 */
                -ms-overflow-style: none;
                scrollbar-width: none;
            }

            .nav-links::-webkit-scrollbar {
                display: none;
            }

            .nav-links a {
                white-space: nowrap;
                font-size: 15px;
            }

            /* 2. Hero 蓝色横幅：文字居中，堆叠显示 */
            .hero {
                padding: 30px 0;
            }

            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: 30px;
            }

            .hero-text {
                max-width: 100%;
            }

            .hero-text h1 {
                font-size: 26px;
            }

            .hero-text p {
                font-size: 13px;
                text-align: justify;
            }

            .hero-stats {
                justify-content: center;
                gap: 20px;
                flex-wrap: wrap;
                width: 100%;
            }

            .stat-item h3 {
                font-size: 24px;
            }

            /* 3. 分类 Tabs：支持横向滑动，防止文字被挤压 */
            .tabs {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 10px;
            }

            .tabs::-webkit-scrollbar {
                display: none;
            }

            .tab-btn {
                white-space: nowrap;
                padding: 8px 20px;
                font-size: 14px;
                flex-shrink: 0;
            }

            /* 4. 赛事卡片：强制单列显示，增加占满屏幕的视觉效果 */
            .match-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }

            /* 5. 模块标题尺寸微调 */
            .section-header {
                margin-top: 30px;
                margin-bottom: 15px;
            }

            .section-header h2 {
                font-size: 18px;
            }

            /* 6. 重点优化：新闻模块改为移动端常见的“左图右文”列表模式 */
            .news-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .news-card {
                display: flex;
                align-items: stretch;
                height: 100px;
            }

            .news-card img {
                width: 130px;
                height: 100px;
                border-radius: 8px 0 0 8px;
            }

            .news-info {
                flex: 1;
                padding: 10px 12px;
                display: flex;
                flex-direction: column;
                justify-content: space-between;
            }

            .news-info h3 {
                font-size: 14px;
                margin-bottom: 0;
                line-height: 1.4;
            }
        }

        /* 针对非常小的屏幕 (如 iPhone SE) 进行极限适配 */
        @media (max-width: 375px) {
            .team img {
                width: 40px;
                height: 40px;
            }

            .team span {
                font-size: 13px;
            }

            .vs-info .vs-text {
                font-size: 20px;
            }

            .news-card img {
                width: 110px;
            }
        }