/* ================================
   基础样式重置
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

ul {
    list-style: none;
}

/* ================================
   导航栏
   ================================ */
header {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background 0.3s, opacity 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    background: rgba(255, 255, 255, 0.2);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: white;
    cursor: pointer;
}

/* ================================
   页面头部
   ================================ */
.page-header {
    background: linear-gradient(135deg, #1abc9c 0%, #16a085 100%);
    padding: 150px 5% 80px;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.3rem;
    opacity: 0.9;
}

/* ================================
   英雄区域
   ================================ */
.hero {
    background: linear-gradient(135deg, #1abc9c 0%, #16a085 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
}

.hero-content {
    color: white;
    padding: 2rem;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ================================
   按钮样式
   ================================ */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: white;
    color: #1abc9c;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #1abc9c;
}

.btn-link {
    color: #e74c3c;
    font-weight: 500;
    transition: color 0.3s;
}

.btn-link:hover {
    color: #c0392b;
}

/* ================================
   通用区域样式
   ================================ */
.section {
    padding: 5rem 5%;
}

.section-alt {
    background: white;
}

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

h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.center-btn {
    text-align: center;
    margin-top: 3rem;
}

/* ================================
   卡片网格
   ================================ */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.nav-card {
    display: block;
    text-align: center;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    color: #e74c3c;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    color: #666;
    line-height: 1.8;
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card ul li {
    padding: 0.5rem 0;
    color: #666;
    border-bottom: 1px dashed #eee;
}

.card ul li:last-child {
    border-bottom: none;
}

/* ================================
   规则列表
   ================================ */
.rules-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.rule-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    transition: background 0.3s;
}

.rule-item:hover {
    background: #e9ecef;
}

.rule-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.rule-item h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.rule-item p {
    color: #666;
    font-size: 0.95rem;
}

/* ================================
   技术卡片
   ================================ */
.technique-card {
    text-align: center;
}

.technique-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tech-desc {
    color: #666;
    margin-bottom: 1rem;
    font-style: italic;
}

.tech-note {
    margin-top: 1rem;
    padding: 0.5rem;
    background: #f0f0f0;
    border-radius: 5px;
    font-size: 0.9rem;
    color: #666;
}

.technique-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tech-detail-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.tech-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.tech-header {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tech-header h3 {
    font-size: 1.3rem;
}

.tech-icon {
    font-size: 2rem;
}

.tech-detail-card .tech-desc {
    padding: 1rem 1.5rem;
    margin-bottom: 0;
}

.tech-detail-card h4 {
    padding: 0.5rem 1.5rem;
    color: #e74c3c;
    margin-top: 1rem;
}

.tech-detail-card ol,
.tech-detail-card ul {
    padding: 0 1.5rem 1.5rem;
}

.tech-detail-card li {
    padding: 0.3rem 0;
    color: #666;
}

/* ================================
   装备相关
   ================================ */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.equipment-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s, background 0.3s;
}

.equipment-item:hover {
    transform: scale(1.05);
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.equipment-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    display: block;
}

.equipment-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.equipment-item p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.equipment-item h4 {
    color: #e74c3c;
    margin: 1rem 0 0.5rem;
    text-align: left;
}

.equipment-item ul {
    text-align: left;
}

.equipment-item li {
    padding: 0.3rem 0;
    color: #666;
    font-size: 0.9rem;
}

.equipment-detail {
    margin-bottom: 3rem;
}

.equipment-intro {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.equipment-icon-large {
    font-size: 5rem;
    flex-shrink: 0;
}

.intro-text {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

.accessories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.accessory-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.accessory-card:hover {
    transform: translateY(-5px);
}

.accessory-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.accessory-card h3 {
    color: #2c3e50;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.accessory-card p {
    color: #666;
    font-size: 0.9rem;
}

/* ================================
   数据统计
   ================================ */
.stats-section {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.stats-section h2 {
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ================================
   首页球员预览卡片
   ================================ */
.player-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.player-card {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.player-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.player-card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 10px;
    margin-bottom: 1rem;
    background: #f0f0f0;
}

.player-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.player-avatar {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.player-card h3 {
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.player-title {
    color: #666;
    font-style: italic;
    margin-bottom: 0.5rem;
}

.player-desc {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* ================================
   运动员页面
   ================================ */
.players-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.player-detail-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.player-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.player-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: #f0f0f0;
}

.player-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.player-detail-card:hover .player-image img {
    transform: scale(1.05);
}

.player-flag {
    font-size: 2.5rem;
    text-align: center;
    padding: 0.8rem;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.player-info {
    padding: 1.5rem;
}

.player-info h3 {
    color: #e74c3c;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
}

.player-nickname {
    color: #666;
    font-style: italic;
    margin-bottom: 1rem;
}

.player-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stat-badge {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.player-desc {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.player-achievements h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.player-achievements ul {
    padding-left: 1rem;
}

.player-achievements li {
    padding: 0.3rem 0;
    color: #666;
    font-size: 0.9rem;
}

.grand-slam-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grand-slam-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.grand-slam-card h3 {
    color: #e74c3c;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.5rem;
}

.slam-list {
    list-style: none;
}

.slam-list li {
    padding: 0.8rem 0;
    border-bottom: 1px dashed #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.slam-list li:last-child {
    border-bottom: none;
}

.player-name {
    font-weight: 500;
    color: #2c3e50;
}

.country {
    font-size: 1.2rem;
}

/* ================================
   赛事页面
   ================================ */
.tournaments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tournament-card-alt {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.tournament-card-alt:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.tournament-card-alt .tournament-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tournament-card-alt h3 {
    color: #e74c3c;
    margin-bottom: 0.5rem;
}

.tournament-card-alt p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.tournament-tag {
    display: inline-block;
    background: #f0f0f0;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #666;
}

.tournament-detail-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
}

.tournament-header {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.tournament-image {
    width: 100%;
    height: 350px;
    overflow: hidden;
    background: #f0f0f0;
}

.tournament-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.tournament-detail-card:hover .tournament-image img {
    transform: scale(1.05);
}

.tournament-header .tournament-icon {
    font-size: 3rem;
}

.tournament-header h3 {
    flex: 1;
    font-size: 1.8rem;
}

.tournament-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.tournament-body {
    padding: 2rem;
}

.tournament-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.info-item strong {
    color: #e74c3c;
    font-size: 0.9rem;
}

.info-item span {
    color: #666;
}

.tournament-desc {
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.tournament-champions h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.champions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.champion {
    background: #f0f0f0;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    font-size: 0.9rem;
    color: #666;
}

.china-olympic-stats {
    overflow-x: auto;
}

.stats-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.stats-table th,
.stats-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.stats-table th {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    font-weight: 500;
}

.stats-table tr:hover {
    background: #f8f9fa;
}

.stats-table tr:last-child td {
    border-bottom: none;
}

/* ================================
   首页赛事预览
   ================================ */
.tournament-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tournament-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s, background 0.3s;
}

.tournament-card:hover {
    transform: translateY(-5px);
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.tournament-card .tournament-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.tournament-card h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.tournament-card p {
    color: #666;
    margin-bottom: 1rem;
}

.tournament-card .tournament-tag {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

/* ================================
   页脚
   ================================ */
footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 5% 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 2rem;
}

.footer-section h4 {
    color: #e74c3c;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #aaa;
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    padding: 0.3rem 0;
}

.footer-section ul li a {
    color: #aaa;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #e74c3c;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #aaa;
}

/* ================================
   动画
   ================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================
   响应式设计
   ================================ */
@media (max-width: 992px) {
    .nav-links {
        gap: 1rem;
    }
    
    .nav-links a {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #c0392b;
        flex-direction: column;
        padding: 1rem;
        gap: 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 1rem;
        border-radius: 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    h2 {
        font-size: 2rem;
    }

    .content-grid,
    .equipment-grid,
    .players-grid,
    .tournaments-grid {
        grid-template-columns: 1fr;
    }

    .rule-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tournament-header {
        flex-direction: column;
        text-align: center;
    }

    .tournament-info {
        grid-template-columns: 1fr;
    }

    .equipment-intro {
        flex-direction: column;
        text-align: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
    }

    .player-stats {
        justify-content: center;
    }

    .champions-list {
        justify-content: center;
    }
}