/* 24直播网 - 全局样式表 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,700;1,700&display=swap');

:root {
    --bg-dark: #0a0a0a;
    --bg-card: #151515;
    --gold: #c5a059;
    --gold-bright: #e5c17b;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    --border: rgba(197, 160, 89, 0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .serif {
    font-family: 'Playfair Display', serif;
}

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

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--gold);
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

/* 按钮样式 */
.btn {
    padding: 0.8rem 2rem;
    border-radius: 100px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-gold {
    background-color: var(--gold);
    color: var(--bg-dark);
}

.btn-gold:hover {
    background-color: var(--gold-bright);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(197, 160, 89, 0.3);
}

.btn-outline {
    border: 1px solid var(--gold);
    color: var(--gold);
    background: transparent;
}

.btn-outline:hover {
    background: var(--gold);
    color: var(--bg-dark);
}

/* 头部展示区域 */
.hero {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(rgba(10,10,10,0.7), rgba(10,10,10,0.7)), url('https://tse-mm.bing.com/th?q=足球体育场高清') no-repeat center center/cover;
    position: relative;
    padding-top: 80px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 2.5rem;
}

/* 统计数据 */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--gold);
}

.stat-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 模块标题 */
.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
}

/* 卡片样式 */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    border-color: var(--gold);
    transform: translateY(-5px);
}

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

/* 页脚 */
footer {
    background: #050505;
    padding: 5rem 5% 2rem;
    margin-top: 5rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    color: var(--gold);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
    color: var(--gold);
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* 应实现汉堡菜单 */
}

/* 动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}