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

        body {
            font-family: 'Inter', sans-serif;
            background: #f5f9ff;
            color: #1e293b;
            line-height: 1.5;
        }

        /* 三栏网格布局 */
        .three-columns {
            display: grid;
            grid-template-columns: 260px 1fr 300px;
            gap: 0;
            min-height: 100vh;
            max-width: 1600px;
            margin: 0 auto;
            background: #f8fafc;
        }

        /* ========= 左侧导航栏 (固定) ========= */
        .left-sidebar {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border-right: 1px solid #e2edf7;
            padding: 32px 20px;
            position: sticky;
            top: 0;
            height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 48px;
        }
        .logo-area i {
            font-size: 32px;
            color: #3b82f6;
            background: #eef2ff;
            padding: 8px;
            border-radius: 20px;
        }
        .logo-area h2 {
            font-size: 1.4rem;
            font-weight: 700;
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 18px;
            border-radius: 32px;
            font-weight: 500;
            color: #475569;
            transition: all 0.2s;
            cursor: pointer;
        }
        .nav-item i {
            width: 24px;
            font-size: 1.1rem;
        }
        .nav-item.active {
            background: #eef2ff;
            color: #3b82f6;
        }
        .nav-item:hover:not(.active) {
            background: #f1f5f9;
            color: #2563eb;
        }
        .left-footer {
            margin-top: 40px;
            font-size: 0.7rem;
            color: #7c8ba0;
            border-top: 1px solid #e2edf7;
            padding-top: 20px;
        }

        /* ========= 中间主内容区 ========= */
        .main-content {
            padding: 32px 32px 60px;
            overflow-x: hidden;
        }

        /* 倒计时卡片 */
        .countdown-module {
            background: white;
            border-radius: 40px;
            padding: 28px 20px;
            margin-bottom: 40px;
            text-align: center;
            box-shadow: 0 8px 20px -8px rgba(0,0,0,0.03);
            border: 1px solid #eef2ff;
        }
        .tournament {
            font-size: 1.5rem;
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 8px;
        }
        .tournament-name {
            font-weight: 800;
            background: linear-gradient(120deg, #2563eb, #06b6d4);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .countdown-module h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 6px 0;
        }
        .host {
            background: #eef2ff;
            display: inline-block;
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #2563eb;
        }
        .timer-grid {
            display: flex;
            justify-content: center;
            gap: 18px;
            margin: 20px 0 12px;
            flex-wrap: wrap;
        }
        .time-card {
            background: #f8fafc;
            border-radius: 28px;
            padding: 10px 16px;
            min-width: 80px;
            border: 1px solid #e2e8f0;
        }
        .time-number {
            font-size: 2.4rem;
            font-weight: 800;
            font-family: monospace;
            color: #1e40af;
        }
        .time-unit-label {
            font-size: 0.7rem;
            color: #5b6e8c;
        }
        .subtle-message {
            background: #eef2ff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.75rem;
            display: inline-block;
            color: #1e40af;
        }

        /* 通用标题 */
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin: 48px 0 24px 0;
        }
        .section-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0f172a;
        }
        .section-header h2 i {
            color: #3b82f6;
            margin-right: 10px;
        }
        .view-more {
            background: #eef2ff;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            color: #3b82f6;
            cursor: pointer;
            transition: 0.2s;
        }
        .view-more:hover {
            background: #3b82f6;
            color: white;
        }

        /* 新闻网格 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: white;
            border-radius: 28px;
            overflow: hidden;
            cursor: pointer;
            border: 1px solid #eef2ff;
            transition: all 0.2s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 24px -12px rgba(59,130,246,0.12);
            border-color: #cbdffa;
        }
        .news-img {
            height: 170px;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            padding: 18px;
        }
        .news-title {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
        .news-meta {
            font-size: 0.7rem;
            color: #7c8ba0;
            display: flex;
            gap: 14px;
        }

        /* 直播卡片网格 */
        .live-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }
        .live-card {
            background: white;
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid #eef2ff;
            transition: all 0.2s;
            cursor: pointer;
        }
        .live-card:hover {
            transform: translateY(-3px);
            border-color: #b9d0f8;
            box-shadow: 0 12px 20px -12px rgba(0,0,0,0.06);
        }
        .live-header {
            background: #fafdff;
            padding: 12px 18px;
            display: flex;
            justify-content: space-between;
            border-bottom: 1px solid #eef2ff;
        }
        .live-sport {
            font-weight: 600;
            color: #2563eb;
        }
        .live-badge {
            background: #dcfce7;
            color: #15803d;
            border-radius: 30px;
            padding: 2px 12px;
            font-size: 0.7rem;
            font-weight: 700;
        }
        .live-body {
            padding: 18px;
        }
        .teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 18px;
        }
        .team {
            text-align: center;
            flex: 1;
        }
        .team-logo img {
            width: 52px;
            height: 52px;
            object-fit: contain;
            background: #f1f5f9;
            border-radius: 50%;
            padding: 5px;
        }
        .team-name {
            font-weight: 600;
            font-size: 0.8rem;
            margin-top: 8px;
        }
        .vs {
            background: #e2e8f0;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-weight: 800;
            color: #3b82f6;
        }
        .match-info {
            background: #f8fafc;
            border-radius: 20px;
            padding: 10px;
            font-size: 0.7rem;
            text-align: center;
            margin: 14px 0;
        }
        .watch-btn {
            background: #eff6ff;
            text-align: center;
            padding: 8px;
            border-radius: 40px;
            font-weight: 600;
            color: #2563eb;
            transition: 0.2s;
        }
        .watch-btn:hover {
            background: #3b82f6;
            color: white;
        }

        /* 录像卡片 */
        .replay-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 24px;
        }
        .replay-card {
            background: white;
            border-radius: 28px;
            overflow: hidden;
            cursor: pointer;
            border: 1px solid #eef2ff;
            transition: 0.2s;
        }
        .replay-card:hover {
            transform: scale(0.98);
            background: #fefefe;
        }
        .replay-thumb {
            background: #eef2ff;
            height: 140px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            color: #3b82f6;
            font-size: 2.5rem;
        }
        .play-icon {
            position: absolute;
            background: rgba(255,255,255,0.8);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .replay-detail {
            padding: 16px;
        }
        .replay-title {
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 6px;
        }
        .replay-meta {
            font-size: 0.65rem;
            color: #6c86a3;
            display: flex;
            gap: 12px;
        }

        /* ========= 右侧边栏 (信息面板) ========= */
        .right-sidebar {
            background: #ffffffd9;
            backdrop-filter: blur(4px);
            border-left: 1px solid #e2edf7;
            padding: 32px 20px;
            position: sticky;
            top: 0;
            height: 100vh;
            overflow-y: auto;
        }
        .right-card {
            background: #f9fcff;
            border-radius: 32px;
            padding: 20px;
            margin-bottom: 32px;
            border: 1px solid #eef2ff;
        }
        .right-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #0f172a;
        }
        .keyword-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .keyword-chip {
            background: #eef2ff;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            color: #2563eb;
            cursor: pointer;
            transition: 0.2s;
        }
        .keyword-chip:hover {
            background: #3b82f6;
            color: white;
        }
        .partner-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .partner-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: #334155;
            cursor: pointer;
            padding: 6px 0;
            border-bottom: 1px dashed #e2edf7;
        }
        .partner-item i {
            color: #3b82f6;
            width: 24px;
        }
        .current-time-box {
            text-align: center;
            font-family: monospace;
            background: #eef2ff;
            border-radius: 28px;
            padding: 12px;
            margin-top: 12px;
        }
        .live-clock {
            font-size: 1.4rem;
            font-weight: 700;
            color: #1e40af;
        }
        footer {
            font-size: 0.7rem;
            text-align: center;
            color: #7c8ba0;
            margin-top: 40px;
            padding-top: 16px;
            border-top: 1px solid #e2edf7;
        }

        @media (max-width: 1100px) {
            .three-columns {
                grid-template-columns: 220px 1fr 260px;
            }
        }
        @media (max-width: 900px) {
            .three-columns {
                grid-template-columns: 1fr;
            }
            .left-sidebar, .right-sidebar {
                position: relative;
                height: auto;
                border: none;
                border-bottom: 1px solid #e2edf7;
            }
            .left-sidebar {
                flex-direction: row;
                padding: 16px 24px;
                gap: 24px;
                align-items: center;
            }
            .logo-area {
                margin-bottom: 0;
            }
            .nav-menu {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .left-footer {
                display: none;
            }
            .right-sidebar {
                border-left: none;
                border-top: 1px solid #e2edf7;
            }
        }
        .ad {
            cursor: pointer;
        }