:root {
    --primary-color: #d9230f;
    --secondary-color: #222;
    --accent-color: #ff9800;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --mid-gray: #e0e0e0;
    --dark-gray: #666;
    --black: #000;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Arial', 'Helvetica', sans-serif;
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: #f9f9f9;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.primary-btn {
    background-color: var(--primary-color);
    color: var(--white);
}

.primary-btn:hover {
    background-color: #b91d0d;
}

.secondary-btn {
    background-color: var(--secondary-color);
    color: var(--white);
}

.secondary-btn:hover {
    background-color: #333;
}

.watch-btn {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: bold;
    transition: var(--transition);
}

.watch-btn:hover {
    background-color: #b91d0d;
}

/* 头部样式 */
.site-header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.site-header.sticky {
    padding: 10px 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area h1 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.logo-area .slogan {
    font-size: 14px;
    color: var(--dark-gray);
}

.main-nav ul {
    display: flex;
}

.main-nav li {
    margin-left: 20px;
}

.main-nav a {
    color: var(--secondary-color);
    font-weight: bold;
    padding: 8px 12px;
    border-radius: 4px;
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--primary-color);
    background-color: var(--light-gray);
}

/* 英雄区域样式 */
.hero-section {
    padding: 80px 0;
    background-color: var(--white);
}

.hero-section .container {
    display: flex;
    align-items: center;
}

.hero-content {
    flex: 1;
    padding-right: 40px;
}

.hero-content h2 {
    font-size: 40px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    color: var(--dark-gray);
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* 区块标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.section-header p {
    font-size: 18px;
    color: var(--dark-gray);
}

/* 直播区域样式 */
.live-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.live-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.live-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.live-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.live-poster {
    position: relative;
}

.live-poster img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.live-status {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.live-status.live {
    background-color: var(--primary-color);
    color: var(--white);
}

.live-status.upcoming {
    background-color: #28a745;
    color: var(--white);
}

.live-info {
    padding: 15px;
}

.live-info h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.live-meta {
    font-size: 14px;
    color: var(--dark-gray);
    margin-bottom: 15px;
}

.team-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.team {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.team img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-bottom: 5px;
}

.score {
    font-weight: bold;
    font-size: 18px;
}

.vs {
    font-weight: bold;
    color: var(--dark-gray);
}

.more-btn-container {
    text-align: center;
}

/* 回放区域样式 */
.replay-section {
    padding: 80px 0;
    background-color: var(--white);
}

.replay-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.replay-card {
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.replay-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.replay-poster {
    position: relative;
}

.replay-poster img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.replay-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    padding: 5px 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--white);
    border-radius: 4px;
    font-size: 12px;
}

.replay-info {
    padding: 15px;
}

.replay-info h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.replay-meta {
    font-size: 14px;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.replay-teams {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.replay-score {
    font-weight: bold;
    font-size: 18px;
}

/* 赛程区域样式 */
.schedule-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.schedule-filter {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.filter-tabs {
    display: flex;
}

.filter-tab {
    padding: 8px 15px;
    margin-right: 10px;
    border-radius: 20px;
    background-color: var(--mid-gray);
    color: var(--secondary-color);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.filter-tab.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.filter-select {
    padding: 8px 15px;
    border-radius: 20px;
    border: 1px solid #ddd;
    background-color: var(--white);
    color: var(--secondary-color);
}

.schedule-date {
    margin-bottom: 30px;
}

.date-header {
    padding: 10px 15px;
    background-color: var(--mid-gray);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
}

.date-header h3 {
    font-size: 18px;
    color: var(--secondary-color);
}

.schedule-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.schedule-card {
    display: flex;
    align-items: center;
    padding: 15px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.schedule-time {
    width: 80px;
    font-size: 16px;
    font-weight: bold;
    color: var(--secondary-color);
}

.schedule-teams {
    display: flex;
    align-items: center;
    flex: 1;
}

.team-vs {
    display: flex;
    align-items: center;
    margin: 0 20px;
}

.vs-text {
    margin: 0 10px;
    font-weight: bold;
    color: var(--dark-gray);
}

.schedule-status {
    width: 120px;
    text-align: center;
}

.status-label {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.status-live {
    background-color: var(--primary-color);
    color: var(--white);
}

.status-upcoming {
    background-color: #28a745;
    color: var(--white);
}

.status-finished {
    background-color: var(--dark-gray);
    color: var(--white);
}

/* 新闻区域样式 */
.news-section {
    padding: 80px 0;
    background-color: var(--white);
}

.news-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.featured-article {
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.featured-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.featured-content {
    padding: 20px;
}

.featured-content h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.featured-content h3 a:hover {
    color: var(--primary-color);
}

.news-meta {
    font-size: 14px;
    color: var(--dark-gray);
    margin-bottom: 15px;
}

.featured-content p {
    margin-bottom: 20px;
}

.read-more {
    color: var(--primary-color);
    font-weight: bold;
}

.read-more:hover {
    text-decoration: underline;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.news-thumbnail {
    flex: 0 0 150px;
}

.news-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-summary {
    flex: 1;
    padding: 15px;
}

.news-summary h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.news-summary h3 a:hover {
    color: var(--primary-color);
}

.news-summary p {
    margin-bottom: 10px;
}

.news-more {
    text-align: center;
    margin-top: 30px;
}

/* 数据统计区域样式 */
.data-section {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.data-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 10px 20px;
    margin: 0 5px;
    border: none;
    background-color: var(--mid-gray);
    color: var(--secondary-color);
    font-weight: bold;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.data-content {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.tab-panel {
    display: none;
    padding: 20px;
}

.tab-panel.active {
    display: block;
}

.conference-tabs {
    display: flex;
    margin-bottom: 20px;
}

.conf-btn {
    padding: 8px 15px;
    margin-right: 10px;
    border: none;
    background-color: var(--mid-gray);
    color: var(--secondary-color);
    font-weight: bold;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.conf-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.standings-table table,
.stats-table table {
    width: 100%;
    border-collapse: collapse;
}

.standings-table th,
.standings-table td,
.stats-table th,
.stats-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.standings-table th,
.stats-table th {
    font-weight: bold;
    color: var(--secondary-color);
    background-color: var(--light-gray);
}

.team-name,
.player-name {
    display: flex;
    align-items: center;
}

.team-name img,
.player-name img {
    margin-right: 10px;
    border-radius: 50%;
}

.team-form {
    display: flex;
}

.team-form span {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 50%;
    margin-right: 3px;
    font-size: 12px;
    font-weight: bold;
}

.team-form .win {
    background-color: #28a745;
    color: var(--white);
}

.team-form .loss {
    background-color: var(--primary-color);
    color: var(--white);
}

.stats-filter {
    margin-bottom: 20px;
}

.stats-filter select {
    padding: 8px 15px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

/* 精彩集锦区域样式 */
.highlights-section {
    padding: 80px 0;
    background-color: var(--white);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.highlight-card {
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.highlight-video {
    position: relative;
    cursor: pointer;
}

.highlight-video img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    padding: 3px 8px;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--white);
    border-radius: 4px;
    font-size: 12px;
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.8;
    transition: var(--transition);
}

.highlight-video:hover .play-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.highlight-info {
    padding: 15px;
}

.highlight-info h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.highlight-meta {
    font-size: 14px;
    color: var(--dark-gray);
}

/* 应用下载区域样式 */
.app-download {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.app-content {
    display: flex;
    align-items: center;
}

.app-info {
    flex: 1;
    padding-right: 40px;
}

.app-info h2 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.app-info p {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--dark-gray);
}

.app-features {
    margin-bottom: 30px;
}

.app-features li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.app-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.app-buttons {
    display: flex;
    gap: 15px;
}

.app-btn {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.app-btn:hover {
    background-color: #333;
}

.app-btn img {
    margin-right: 10px;
}

.app-image {
    flex: 1;
    text-align: center;
}

.app-image img {
    max-height: 500px;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
}

/* 页脚样式 */
.site-footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-logo {
    flex: 0 0 100%;
    margin-bottom: 30px;
}

.footer-logo h2 {
    font-size: 24px;
    margin-bottom: 10px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
}

.footer-column {
    flex: 1;
    min-width: 200px;
    margin-bottom: 20px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #fff;
}

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

.footer-column a {
    color: #bbb;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

.copyright {
    font-size: 14px;
    color: #bbb;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: #444;
    border-radius: 50%;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media screen and (max-width: 992px) {
    .hero-section .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .app-content {
        flex-direction: column;
    }
    
    .app-info {
        padding-right: 0;
        margin-bottom: 40px;
    }
}

@media screen and (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
    }
    
    .logo-area {
        margin-bottom: 15px;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav li {
        margin: 5px 10px;
    }
    
    .hero-content h2 {
        font-size: 32px;
    }
    
    .schedule-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .schedule-time {
        margin-bottom: 10px;
    }
    
    .schedule-teams {
        margin-bottom: 15px;
    }
    
    .news-item {
        flex-direction: column;
    }
    
    .news-thumbnail {
        flex: 0 0 auto;
        height: 200px;
    }
    
    .footer-column {
        flex: 0 0 50%;
    }
    
    .footer-bottom {
        flex-direction: column;
    }
    
    .copyright {
        margin-bottom: 15px;
    }
}

@media screen and (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .filter-tabs {
        flex-wrap: wrap;
    }
    
    .filter-tab {
        margin-bottom: 10px;
    }
    
    .app-buttons {
        flex-direction: column;
    }
    
    .footer-column {
        flex: 0 0 100%;
    }
}