/* ===== CSS 变量 ===== */
:root {
    --primary-color: #ff6699;
    --primary-dark: #ff4785;
    --secondary-color: #23ade5;
    --bg-primary: #ffffff;
    --bg-secondary: #f4f4f4;
    --bg-tertiary: #e3e5e7;
    --text-primary: #18191c;
    --text-secondary: #61666d;
    --text-tertiary: #9499a0;
    --border-color: #e3e5e7;
    --card-bg: #ffffff;
    --hover-bg: #f1f2f3;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --sidebar-width: 240px;
    --header-height: 64px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #707070;
    --border-color: #2a2a2a;
    --card-bg: #1a1a1a;
    --hover-bg: #2a2a2a;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 顶部导航栏 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
    transition: var(--transition);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.menu-toggle {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    color: var(--text-primary);
}

.menu-toggle:hover {
    background: var(--hover-bg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 32px;
    color: var(--primary-color);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    gap: 4px;
    margin-left: 20px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(255, 102, 153, 0.1);
}

/* 中间搜索 */
.header-center {
    flex: 1;
    max-width: 600px;
    margin: 0 40px;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    height: 40px;
    padding: 0 50px 0 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border: none;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-top: 8px;
    padding: 16px;
    display: none;
    z-index: 100;
}

.search-dropdown.active {
    display: block;
}

.dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.clear-btn {
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    font-size: 13px;
}

.history-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.history-tag {
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.history-tag:hover {
    background: var(--hover-bg);
}

.hot-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hot-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.hot-item:hover {
    background: var(--hover-bg);
}

.hot-rank {
    width: 20px;
    text-align: center;
    font-weight: 700;
}

.hot-item:nth-child(1) .hot-rank { color: #ff4757; }
.hot-item:nth-child(2) .hot-rank { color: #ff7f50; }
.hot-item:nth-child(3) .hot-rank { color: #ffa502; }

/* 右侧功能区 */
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-btn {
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition);
}

.header-btn:hover {
    background: var(--primary-dark);
}

.header-icon {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 20px;
}

.header-icon:hover {
    background: var(--hover-bg);
}

.badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--hover-bg);
}

/* 用户菜单 */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    object-fit: cover;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 280px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    margin-top: 12px;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 100;
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info {
    display: flex;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.user-info img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.user-name {
    font-size: 16px;
    font-weight: 600;
}

.user-level {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 12px;
    margin-top: 4px;
}

.user-stats {
    display: flex;
    justify-content: space-around;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.user-stats span {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-stats div {
    font-size: 12px;
    color: var(--text-tertiary);
}

.user-links {
    padding: 12px 0;
}

.user-links a {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.user-links a:hover {
    background: var(--hover-bg);
}

.user-logout {
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.user-logout a {
    color: #ff4757;
    font-size: 14px;
}

/* ===== 页面主体 ===== */
.page-container {
    display: flex;
    margin-top: var(--header-height);
}

/* ===== 左侧边栏 ===== */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 16px;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar.hidden {
    transform: translateX(-100%);
}

.sidebar-section {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section:last-child {
    border-bottom: none;
}

.sidebar-title {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    padding: 0 12px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
    margin-bottom: 2px;
}

.sidebar-link:hover,
.sidebar-link.active {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.sidebar-link .icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.up-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    min-height: calc(100vh - var(--header-height));
    transition: margin-left 0.3s ease;
}

.main-content.expanded {
    margin-left: 0;
}

/* ===== 轮播Banner ===== */
.banner-section {
    margin-bottom: 32px;
}

.banner-carousel {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 21/9;
}

.banner-track {
    display: flex;
    height: 100%;
    transition: transform 0.5s ease;
}

.banner-item {
    min-width: 100%;
    position: relative;
}

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

.banner-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
}

.banner-content h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.banner-content p {
    opacity: 0.9;
}

.banner-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.5);
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.banner-carousel:hover .banner-btn {
    opacity: 1;
}

.banner-btn:hover {
    background: rgba(0,0,0,0.7);
}

.banner-btn.prev { left: 16px; }
.banner-btn.next { right: 16px; }

.banner-indicators {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.banner-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.banner-indicator.active {
    width: 24px;
    border-radius: 4px;
    background: var(--primary-color);
}

/* ===== 视频区块 ===== */
.video-section {
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
}

.live-badge {
    color: #ff4757;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.view-more {
    font-size: 13px;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.view-more:hover {
    color: var(--primary-color);
}

/* 视频网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.video-card {
    cursor: pointer;
    transition: var(--transition);
}

.video-card:hover {
    transform: translateY(-4px);
}

.video-cover {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
}

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

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

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    padding: 2px 8px;
    background: rgba(0,0,0,0.7);
    color: white;
    font-size: 12px;
    border-radius: 4px;
}

.video-info {
    padding: 12px 0;
}

.video-title {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}

.up-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.up-avatar-small {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.up-name {
    font-size: 13px;
    color: var(--text-tertiary);
}

.video-stats {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 排行榜 */
.ranking-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.ranking-item:hover {
    background: var(--hover-bg);
}

.ranking-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 14px;
}

.ranking-item:nth-child(1) .ranking-num {
    background: #ff4757;
    color: white;
}

.ranking-item:nth-child(2) .ranking-num {
    background: #ff7f50;
    color: white;
}

.ranking-item:nth-child(3) .ranking-num {
    background: #ffa502;
    color: white;
}

.ranking-cover {
    width: 120px;
    aspect-ratio: 16/10;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

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

.ranking-info {
    flex: 1;
}

.ranking-title {
    font-size: 14px;
    font-weight: 500;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.ranking-hot {
    font-size: 12px;
    color: var(--primary-color);
}

/* 直播网格 */
.live-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.live-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 16/10;
}

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

.live-overlay {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: #ff4757;
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.live-viewer {
    position: absolute;
    bottom: 12px;
    left: 12px;
    padding: 4px 10px;
    background: rgba(0,0,0,0.6);
    color: white;
    border-radius: 4px;
    font-size: 12px;
}

.live-info-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 16px 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
}

.live-title {
    font-size: 14px;
    margin-bottom: 8px;
}

.live-up {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    opacity: 0.9;
}

.live-up img {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

/* 番剧网格 */
.anime-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.anime-card {
    cursor: pointer;
}

.anime-cover {
    position: relative;
    aspect-ratio: 3/4;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 8px;
}

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

.anime-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 2px 8px;
    background: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 11px;
}

.anime-update {
    position: absolute;
    bottom: 8px;
    right: 8px;
    padding: 2px 8px;
    background: rgba(0,0,0,0.7);
    color: white;
    border-radius: 4px;
    font-size: 11px;
}

.anime-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.anime-episode {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* UP主推荐 */
.up-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.up-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
}

.up-card:hover {
    background: var(--hover-bg);
}

.up-avatar-lg {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.up-info-card {
    flex: 1;
}

.up-name-lg {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.up-desc {
    font-size: 12px;
    color: var(--text-tertiary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.follow-btn-sm {
    padding: 6px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.follow-btn-sm:hover {
    background: var(--primary-dark);
}

/* 加载更多 */
.loading-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-tertiary);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 视频播放弹窗 ===== */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
}

.video-modal.active {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
}

.modal-content {
    position: relative;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    padding: 24px;
}

.modal-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    border-radius: 50%;
    z-index: 2001;
    transition: var(--transition);
}

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

.video-player-container {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
    max-width: 1600px;
    margin: 0 auto;
}

.video-player {
    position: relative;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-player video {
    width: 100%;
    height: 100%;
}

/* 弹幕层 */
.danmaku-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 60px;
    pointer-events: none;
    overflow: hidden;
}

.danmaku-item {
    position: absolute;
    white-space: nowrap;
    font-size: 18px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    animation: danmakuMove 10s linear;
    pointer-events: none;
}

@keyframes danmakuMove {
    from { transform: translateX(100%); left: 100%; }
    to { transform: translateX(-100%); left: 0; }
}

/* 播放器控制栏 */
.player-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
    cursor: pointer;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s linear;
}

.controls-row {
    display: flex;
    align-items: center;
    gap: 16px;
    color: white;
}

.control-btn {
    background: none;
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    padding: 4px;
}

.time-display {
    font-size: 13px;
    font-family: monospace;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.volume-slider {
    width: 80px;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
    cursor: pointer;
}

.volume-fill {
    height: 100%;
    background: white;
    border-radius: 2px;
    width: 80%;
}

.controls-spacer {
    flex: 1;
}

/* 视频侧边栏 */
.video-sidebar {
    color: white;
}

.video-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.video-stats {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: #aaa;
    margin-bottom: 16px;
}

.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.video-tag {
    padding: 4px 12px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.video-desc {
    font-size: 13px;
    line-height: 1.8;
    color: #aaa;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 24px;
}

.up-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 16px;
}

.up-avatar-large {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
}

.up-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.up-detail {
    flex: 1;
}

.up-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.up-fans {
    font-size: 13px;
    color: #aaa;
}

.follow-btn {
    padding: 8px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.follow-btn:hover {
    background: var(--primary-dark);
}

.video-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.action-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.action-btn:hover {
    background: rgba(255,255,255,0.2);
}

.action-btn span:first-child {
    font-size: 20px;
}

.danmaku-input-box {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.danmaku-input-box input {
    flex: 1;
    padding: 12px 16px;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 14px;
    outline: none;
}

.danmaku-input-box input::placeholder {
    color: #888;
}

.danmaku-input-box button {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.danmaku-input-box button:hover {
    background: var(--primary-dark);
}

/* 评论区 */
.comment-section {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
}

.comment-count {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.comment-tabs {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
}

.comment-tabs button {
    background: none;
    border: none;
    color: #888;
    font-size: 14px;
    cursor: pointer;
    padding: 0;
}

.comment-tabs button.active {
    color: var(--primary-color);
    font-weight: 500;
}

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

.comment-item {
    display: flex;
    gap: 12px;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.comment-content {
    flex: 1;
}

.comment-user {
    font-size: 14px;
    color: #aaa;
    margin-bottom: 4px;
}

.comment-text {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}

.comment-actions {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: #888;
}

.related-videos {
    max-width: 1600px;
    margin: 24px auto 0;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-primary);
    padding: 40px 0 0;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto 40px;
    padding: 0 20px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-col a {
    font-size: 13px;
    color: var(--text-tertiary);
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 24px 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
}

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

.back-to-top:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .main-nav {
        display: none;
    }

    .video-player-container {
        grid-template-columns: 1fr;
    }

    .video-sidebar {
        color: var(--text-primary);
    }

    .video-modal {
        background: var(--bg-primary);
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .header-right .header-btn,
    .header-icon:not(.message) {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

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

    .ranking-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 12px;
    }

    .logo-text {
        display: none;
    }

    .header-center {
        margin: 0 12px;
    }

    .video-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .banner-content h3 {
        font-size: 18px;
    }
}

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

    .live-grid,
    .anime-grid,
    .up-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}