/* 糖心vlog在线观看网站样式 - 影视模版风格 */

/* CSS变量定义 */
:root {
    /* 主题色彩 - 影视风格 */
    --primary-color: #e50914;
    --primary-light: #f40612;
    --primary-dark: #b20710;
    --secondary-color: #ffd700;
    --secondary-light: #ffed4e;
    --secondary-dark: #ccac00;
    --accent-color: #00d4ff;
    --accent-light: #33ddff;
    --accent-dark: #00a8cc;
    
    /* 状态色彩 */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --info-color: var(--accent-color);
    
    /* 背景色系 */
    --bg-primary: #000000;
    --bg-secondary: #141414;
    --bg-tertiary: #1f1f1f;
    --bg-card: #2a2a2a;
    --bg-glass: rgba(0, 0, 0, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.7);
    --bg-gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --bg-gradient-alt: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    --bg-hero: linear-gradient(135deg, #000000 0%, #141414 100%);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --text-accent: var(--primary-color);
    --text-white: #ffffff;
    
    /* 边框和阴影 */
    --border-color: #333333;
    --border-hover: #555555;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.6);
    --shadow-2xl: 0 16px 32px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 20px rgba(229, 9, 20, 0.5);
    
    /* 间距系统 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 5rem;
    --spacing-5xl: 6rem;
    
    /* 字体大小 */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    --font-5xl: 3rem;
    --font-6xl: 3.75rem;
    
    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* 过渡动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 容器宽度 */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Poppins', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.section-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-gradient);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 顶部通知栏 */
.top-notification {
    background: var(--bg-gradient);
    color: white;
    padding: var(--spacing-sm) 0;
    position: relative;
    z-index: 1001;
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.notification-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: var(--font-sm);
    font-weight: 500;
    position: relative;
}

.notification-icon {
    font-size: var(--font-lg);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.notification-action {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.notification-action:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.notification-close {
    position: absolute;
    right: var(--spacing-lg);
    background: none;
    border: none;
    color: white;
    font-size: var(--font-lg);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background var(--transition-normal);
}

.notification-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 头部导航 */
.header {
    position: fixed;
    top: 40px;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 50px;
    height: 50px;
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.icon-inner {
    width: 100%;
    height: 100%;
    background: var(--bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-2xl);
    color: white;
    position: relative;
    z-index: 2;
}

.icon-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--bg-gradient);
    border-radius: var(--radius-xl);
    z-index: 1;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { opacity: 0.5; transform: scale(1); }
    to { opacity: 1; transform: scale(1.05); }
}

.brand-title {
    font-family: 'Poppins', sans-serif;
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin: 0;
}

.brand-subtitle {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    font-weight: 400;
    font-style: italic;
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(229, 9, 20, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(229, 9, 20, 0.2);
}

.search-input {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-sm);
    width: 200px;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    background: var(--bg-gradient);
    border: none;
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.search-btn:hover {
    transform: scale(1.05);
}

.watch-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    border: none;
    background: var(--bg-gradient);
    color: white;
}

.watch-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: var(--font-lg);
}

/* 主要内容 */
.main-content {
    margin-top: 120px;
}

/* 首页横幅 */
.hero-section {
    position: relative;
    padding: var(--spacing-5xl) 0;
    background: var(--bg-hero);
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.8), rgba(20, 20, 20, 0.6));
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    font-size: var(--font-2xl);
    color: rgba(255, 255, 255, 0.3);
    animation: floatParticle 20s linear infinite;
}

.particle-1 { top: 10%; left: 5%; animation-delay: 0s; }
.particle-2 { top: 20%; right: 10%; animation-delay: 3s; }
.particle-3 { top: 60%; left: 15%; animation-delay: 6s; }
.particle-4 { bottom: 30%; right: 20%; animation-delay: 9s; }
.particle-5 { bottom: 10%; left: 25%; animation-delay: 12s; }
.particle-6 { top: 40%; right: 5%; animation-delay: 15s; }

@keyframes floatParticle {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.3; }
    25% { transform: translateY(-30px) rotate(90deg); opacity: 0.8; }
    50% { transform: translateY(0px) rotate(180deg); opacity: 0.3; }
    75% { transform: translateY(30px) rotate(270deg); opacity: 0.8; }
}

.hero-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-content {
    color: white;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 600;
    backdrop-filter: blur(10px);
    width: fit-content;
}

.badge-icon {
    font-size: var(--font-base);
}

.hero-title {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    font-size: var(--font-5xl);
    font-weight: 800;
    line-height: 1.1;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-lg);
    line-height: 1.7;
    opacity: 0.9;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.feature-tag:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.tag-icon {
    font-size: var(--font-lg);
}

.tag-text {
    font-weight: 600;
    font-size: var(--font-sm);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-md);
    font-size: var(--font-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: var(--font-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-sm);
    opacity: 0.8;
}

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

.video-player {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.player-container {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    position: relative;
}

.player-screen {
    position: relative;
    aspect-ratio: 16/9;
}

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

.player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-lg);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(229, 9, 20, 0.9);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.play-button:hover {
    background: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.play-icon {
    font-size: var(--font-2xl);
    color: white;
    margin-left: 4px;
    z-index: 2;
}

.play-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 2px solid rgba(229, 9, 20, 0.6);
    border-radius: var(--radius-full);
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.video-info {
    align-self: flex-start;
}

.video-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.video-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-sm);
    color: rgba(255, 255, 255, 0.8);
}

.player-controls {
    align-self: flex-end;
    width: 100%;
}

.progress-bar {
    margin-bottom: var(--spacing-sm);
}

.progress-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

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

.control-btn {
    background: none;
    border: none;
    color: white;
    font-size: var(--font-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* 内容区域通用样式 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-lg);
    color: var(--text-secondary);
}

/* 精选视频 */
.featured-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.featured-carousel {
    position: relative;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-2xl);
}

.carousel-track {
    display: flex;
    gap: var(--spacing-xl);
    transition: transform var(--transition-slow);
    padding: var(--spacing-lg);
}

.video-card {
    flex: 0 0 350px;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.video-card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.card-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.thumbnail-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.thumbnail-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.video-card:hover .thumbnail-overlay {
    opacity: 1;
}

.play-btn {
    width: 60px;
    height: 60px;
    background: rgba(229, 9, 20, 0.9);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.play-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 600;
}

.video-quality {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--bg-gradient);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 600;
}

.card-content {
    padding: var(--spacing-lg);
}

.video-title {
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.video-info {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.video-description {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tag {
    background: rgba(229, 9, 20, 0.1);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 600;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.8);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    z-index: 2;
}

.carousel-btn:hover {
    background: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: var(--spacing-md);
}

.carousel-btn.next {
    right: var(--spacing-md);
}

/* 分类浏览 */
.categories-section {
    padding: var(--spacing-5xl) 0;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.category-card {
    position: relative;
    height: 400px;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.category-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.category-card:hover .bg-image {
    transform: scale(1.1);
}

.category-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.8));
}

.category-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-2xl);
    color: white;
    z-index: 2;
}

.category-icon {
    font-size: var(--font-3xl);
    margin-bottom: var(--spacing-md);
}

.category-title {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.category-description {
    font-size: var(--font-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.category-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-xs);
    color: rgba(255, 255, 255, 0.8);
}

.category-btn {
    background: var(--bg-gradient);
    border: none;
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.category-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 在线观看 */
.live-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.live-showcase {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.main-player {
    position: relative;
}

.player-wrapper {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.video-screen {
    position: relative;
    aspect-ratio: 16/9;
}

.screen-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.screen-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-lg);
}

.main-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.main-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.05);
}

.play-icon {
    width: 100px;
    height: 100px;
    background: rgba(229, 9, 20, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-3xl);
    color: white;
    margin-left: 4px;
}

.play-text {
    color: white;
    font-size: var(--font-lg);
    font-weight: 600;
}

.live-info {
    align-self: flex-start;
}

.live-badge {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
}

.live-title {
    font-size: var(--font-xl);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.live-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-sm);
    color: rgba(255, 255, 255, 0.8);
}

.player-toolbar {
    align-self: flex-end;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: var(--spacing-md);
}

.tool-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.tool-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.live-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.sidebar-section {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.sidebar-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature-icon {
    font-size: var(--font-lg);
    flex-shrink: 0;
}

.feature-content {
    flex: 1;
}

.feature-name {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-desc {
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.stat-icon {
    font-size: var(--font-lg);
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.entry-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.entry-btn {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-align: center;
}

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

.entry-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.entry-btn.tertiary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.entry-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 最新更新 */
.latest-section {
    padding: var(--spacing-5xl) 0;
}

.latest-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.video-item {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.video-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.video-item.new {
    border: 2px solid var(--secondary-color);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.item-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.video-item:hover .thumb-img {
    transform: scale(1.05);
}

.thumb-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.video-item:hover .thumb-overlay {
    opacity: 1;
}

.play-icon {
    width: 50px;
    height: 50px;
    background: rgba(229, 9, 20, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-lg);
}

.video-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--secondary-color);
    color: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 700;
}

.video-duration {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
    font-weight: 600;
}

.item-info {
    padding: var(--spacing-lg);
}

.video-title {
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.video-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.load-more {
    text-align: center;
}

.load-more-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--bg-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* 关于我们 */
.about-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-description {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.about-description p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature-icon {
    font-size: var(--font-xl);
    flex-shrink: 0;
}

.feature-text {
    flex: 1;
}

.feature-text h4 {
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-text p {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.about-actions {
    display: flex;
    gap: var(--spacing-md);
}

.about-visual {
    display: flex;
    justify-content: center;
}

.visual-container {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.platform-preview {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.preview-screen {
    position: relative;
    aspect-ratio: 16/9;
}

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

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    text-align: center;
    color: white;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-number {
    font-size: var(--font-lg);
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-xs);
    opacity: 0.8;
}

.platform-features {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(229, 9, 20, 0.1);
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-xs);
    font-weight: 600;
}

.badge-icon {
    font-size: var(--font-sm);
}

/* 页脚 */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-5xl) 0 var(--spacing-xl);
}

.footer-container {
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-5xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 400px;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
    font-size: var(--font-lg);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.column-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-sm);
    transition: color var(--transition-normal);
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.legal-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.legal-link:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container,
    .live-showcase,
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-features,
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: var(--font-4xl);
    }
    
    .hero-features,
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .search-input {
        width: 150px;
    }
    
    .categories-grid,
    .latest-grid {
        grid-template-columns: 1fr;
    }
    
    .carousel-track {
        flex-direction: column;
        align-items: center;
    }
    
    .video-card {
        flex: 0 0 auto;
        width: 100%;
        max-width: 400px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-3xl);
    }
    
    .section-title {
        font-size: var(--font-2xl);
    }
    
    .hero-buttons,
    .about-actions {
        flex-direction: column;
    }
    
    .notification-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .search-box {
        display: none;
    }
    
    .preview-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .platform-features {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
}

/* 可访问性增强 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --border-color: #ffffff;
        --text-secondary: #ffffff;
        --bg-secondary: #000000;
    }
}

/* 打印样式 */
@media print {
    .top-notification,
    .header,
    .footer,
    .hero-buttons,
    .about-actions,
    .category-btn,
    .entry-btn,
    .load-more-btn {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000000;
        background: #ffffff;
    }
    
    .section-title {
        font-size: 18pt;
        margin-bottom: 12pt;
        color: #000000;
    }
}