/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif; font-size: 14px; color: #333; background: #f5f5f5; -webkit-font-smoothing: antialiased; -webkit-text-size-adjust: 100%; }
a { text-decoration: none; color: #333; }
a:hover { color: #1890ff; }
ul, ol { list-style: none; }
img { max-width: 100%; border: 0; vertical-align: middle; }
input, button { border: none; outline: none; font-family: inherit; -webkit-appearance: none; }
.clearfix::after, .cf::after { content: ""; display: table; clear: both; }

/* ============================================
   Layout
   ============================================ */
.layout { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* Two-column layout */
.layout-left { float: left; width: calc(100% - 220px); }
.layout-right { float: right; width: 200px; }

/* ============================================
   Header
   ============================================ */
.header { background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.08); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; align-items: center; height: 60px; gap: 16px; }
.logo a { display: block; font-size: 22px; font-weight: bold; color: #1890ff; white-space: nowrap; }
.logo a:hover { color: #096dd9; }

/* Search bar (desktop) */
.search-bar { flex: 1; display: flex; max-width: 480px; height: 36px; }
.search-bar input[type="text"] { flex: 1; min-width: 0; height: 100%; padding: 0 12px; border: 2px solid #1890ff; border-right: none; border-radius: 4px 0 0 4px; font-size: 14px; background: #fff; }
.search-bar input[type="text"]::placeholder { color: #bbb; }
.search-bar .btn-search { width: 70px; height: 100%; background: #1890ff; color: #fff; font-size: 14px; cursor: pointer; border-radius: 0 4px 4px 0; transition: background .2s; flex-shrink: 0; }
.search-bar .btn-search:hover { background: #096dd9; }

/* Search panel (mobile, hidden by default) */
.search-panel { display: none; padding: 10px 16px; background: #fff; border-bottom: 1px solid #eee; }
.search-panel.show { display: flex; }
.search-panel input[type="text"] { flex: 1; height: 36px; padding: 0 10px; border: 1px solid #d9d9d9; border-radius: 4px 0 0 4px; font-size: 14px; }
.search-panel .btn-search { width: 60px; height: 36px; background: #1890ff; color: #fff; border-radius: 0 4px 4px 0; font-size: 14px; cursor: pointer; }

/* Hamburger & search toggle buttons (hidden on desktop) */
.menu-toggle, .search-toggle { display: none; width: 28px; height: 28px; cursor: pointer; flex-shrink: 0; }
.menu-toggle { position: relative; }
.menu-toggle span, .menu-toggle::before, .menu-toggle::after { content: ""; display: block; width: 20px; height: 2px; background: #333; border-radius: 1px; position: absolute; left: 4px; transition: .2s; }
.menu-toggle::before { top: 6px; }
.menu-toggle span { top: 13px; }
.menu-toggle::after { top: 20px; }
.search-toggle { background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23333" stroke-width="2"><circle cx="11" cy="11" r="8"/><path d="M21 21l-4.35-4.35"/></svg>') no-repeat center; background-size: 20px; }

/* Navigation */
.nav-bar { background: #fff; border-top: 1px solid #f0f0f0; }
.nav-bar ul { display: flex; flex-wrap: wrap; }
.nav-bar li a { display: block; padding: 10px 18px; font-size: 15px; color: #555; transition: color .2s, background .2s; }
.nav-bar li a:hover, .nav-bar li.current a { color: #1890ff; background: #e6f7ff; }

/* ============================================
   Section header
   ============================================ */
.section-hd { display: flex; align-items: center; justify-content: space-between; padding: 20px 0 12px; border-bottom: 2px solid #1890ff; margin-bottom: 16px; }
.section-hd h2 { font-size: 18px; color: #222; }
.section-hd .more-link { font-size: 13px; color: #999; }
.section-hd .more-link:hover { color: #1890ff; }

/* ============================================
   Video grid (5 cols desktop → 2 cols phone)
   ============================================ */
.video-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 24px; }
.video-grid .item { background: #fff; border-radius: 6px; overflow: hidden; transition: transform .2s, box-shadow .2s; }
.video-grid .item:hover { transform: translateY(-3px); box-shadow: 0 6px 16px rgba(0,0,0,.1); }
.video-grid .item .thumb { position: relative; display: block; padding-top: 140%; overflow: hidden; background: #e8e8e8; }
.video-grid .item .thumb img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.video-grid .item:hover .thumb img { transform: scale(1.05); }
.video-grid .item .thumb .play-ico { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 40px; height: 40px; background: rgba(0,0,0,.5); border-radius: 50%; opacity: 0; transition: opacity .3s; }
.video-grid .item .thumb .play-ico::after { content: ""; position: absolute; top: 50%; left: 54%; transform: translate(-50%,-50%); border-style: solid; border-width: 8px 0 8px 14px; border-color: transparent transparent transparent #fff; }
.video-grid .item:hover .thumb .play-ico { opacity: 1; }
.video-grid .item .thumb .marks { position: absolute; bottom: 6px; right: 6px; background: rgba(0,0,0,.7); color: #fff; font-size: 12px; padding: 2px 6px; border-radius: 3px; }
.video-grid .item .info { padding: 8px 10px; }
.video-grid .item .info .title { font-size: 13px; color: #333; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-grid .item .info .title:hover { color: #1890ff; }

/* Recommendation grid: 4 cols on desktop, one row */
.rec-grid { grid-template-columns: repeat(6, 1fr); }

/* ============================================
   Sidebar
   ============================================ */
.sidebar-box { background: #fff; border-radius: 6px; margin-bottom: 16px; overflow: hidden; }
.sidebar-box .box-hd { padding: 12px 14px; background: #1890ff; color: #fff; font-size: 15px; font-weight: bold; }
.sidebar-box .box-bd { padding: 10px 14px; }

.rank-list li { display: flex; align-items: center; padding: 8px 0; border-bottom: 1px dashed #f0f0f0; }
.rank-list li:last-child { border-bottom: none; }
.rank-list .rank-num { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 4px; font-size: 12px; color: #999; background: #f5f5f5; margin-right: 10px; flex-shrink: 0; }
.rank-list .rank-num.top { background: #1890ff; color: #fff; }
.rank-list .rank-title { font-size: 13px; color: #555; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.rank-list .rank-title:hover { color: #1890ff; }

.rec-list .rec-img { display: block; border-radius: 4px; overflow: hidden; margin-bottom: 8px; }
.rec-list .rec-img img { width: 100%; }
.rec-list .rec-item { padding: 6px 0; }
.rec-list .rec-item .rec-title { font-size: 13px; color: #555; margin-bottom: 4px; }
.rec-list .rec-item .rec-btn { display: inline-block; font-size: 12px; color: #1890ff; }

.submenu li a { display: block; padding: 8px 14px; font-size: 14px; color: #555; border-bottom: 1px solid #f5f5f5; }
.submenu li a:hover, .submenu li a.on { color: #1890ff; background: #e6f7ff; }

/* ============================================
   Archive / Detail page
   ============================================ */
.playPage { padding-top: 16px; }
.breadcrumb { font-size: 13px; color: #999; padding: 12px 0; }
.breadcrumb a { color: #999; }
.breadcrumb a:hover { color: #1890ff; }
.breadcrumb em { margin: 0 6px; }

.video-detail { display: flex; gap: 24px; background: #fff; border-radius: 8px; padding: 20px; margin-bottom: 20px; }
.video-detail .thumb { flex-shrink: 0; width: 220px; border-radius: 6px; overflow: hidden; }
.video-detail .thumb img { width: 100%; }
.video-detail .detail { flex: 1; min-width: 0; }
.video-detail .detail h1 { font-size: 22px; color: #222; margin-bottom: 12px; }
.video-detail .detail h1 .score { color: #ff4d4f; font-size: 16px; margin-left: 10px; }
.video-detail .detail p { font-size: 14px; color: #666; line-height: 2; }
.video-detail .detail p b { color: #333; }

.play-btn { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.play-btn a { display: inline-block; padding: 6px 16px; background: #1890ff; color: #fff; border-radius: 4px; font-size: 13px; transition: background .2s; cursor: pointer; }
.play-btn a:hover { background: #096dd9; color: #fff; }
.play-btn a.current { background: #ff4d4f; color: #fff; }

.video-source { background: #fff; border-radius: 8px; padding: 16px 20px; margin-bottom: 12px; }
.video-source .title { font-size: 14px; font-weight: bold; color: #333; display: block; margin-bottom: 10px; }

.video-player { background: #000; border-radius: 8px; overflow: hidden; margin-bottom: 16px; position: relative; min-height: 0; }
.video-player .player-placeholder { aspect-ratio: 16/9; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: #999; font-size: 14px; }
.video-player .player-placeholder.hide { display: none; }
.player-spinner { width: 36px; height: 36px; border: 3px solid rgba(255,255,255,.15); border-top-color: #1890ff; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.video-desc { background: #fff; border-radius: 8px; padding: 20px; margin-bottom: 20px; }
.video-desc .title { font-size: 15px; font-weight: bold; color: #333; margin-bottom: 10px; }
.video-desc p { font-size: 14px; color: #666; line-height: 1.8; }

/* ============================================
   Pagination
   ============================================ */
.paging { text-align: center; padding: 20px 0 30px; }
.paging a, .paging span { display: inline-block; padding: 6px 14px; margin: 0 3px; border: 1px solid #d9d9d9; border-radius: 4px; font-size: 13px; color: #555; background: #fff; }
.paging a:hover { color: #1890ff; border-color: #1890ff; }
.paging .current { background: #1890ff; color: #fff; border-color: #1890ff; }
/* Framework pagination (ul/li structure) */
.paging ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.paging li a { display: inline-block; padding: 6px 14px; border: 1px solid #d9d9d9; border-radius: 4px; font-size: 13px; color: #555; background: #fff; text-decoration: none; }
.paging li a:hover { color: #1890ff; border-color: #1890ff; }
.paging li.active a { background: #1890ff; color: #fff; border-color: #1890ff; }
.paging li.disabled a { color: #ccc; border-color: #e8e8e8; cursor: not-allowed; }
.paging li.disabled a:hover { color: #ccc; border-color: #e8e8e8; }

.empty-result { text-align: center; padding: 40px 0; font-size: 18px; color: #999; }

/* ============================================
   Footer
   ============================================ */
.footer { background: #fff; border-top: 1px solid #f0f0f0; padding: 24px 0; margin-top: 30px; text-align: center; }
.footer-links { margin-bottom: 12px; }
.footer-links a { font-size: 13px; color: #888; margin: 0 10px; }
.footer-links a:hover { color: #1890ff; }
.footer-copy { font-size: 12px; color: #aaa; line-height: 1.8; }

/* Line */
.line { height: 1px; background: #f0f0f0; margin: 8px 0; clear: both; }

/* Helpers */
.hide { display: none !important; }

/* ============================================
   Responsive: Tablet (<=1024px)
   ============================================ */
@media (max-width: 1024px) {
    .layout-left { float: none; width: 100%; }
    .layout-right { float: none; width: 100%; }
    .video-grid { grid-template-columns: repeat(4, 1fr); }
    .video-detail .thumb { width: 180px; }
    .sidebar-box { margin-top: 16px; }
    .rank-list { display: flex; flex-wrap: wrap; }
    .rank-list li { width: 50%; }

    .rec-grid { grid-template-columns: repeat(4, 1fr); }

    /* Rec list: limit image size when sidebar becomes full width */
    .rec-list .rec-img { max-width: 200px; }
}

/* ============================================
   Responsive: Mobile (<=768px)
   ============================================ */
@media (max-width: 768px) {
    .header-inner { height: 50px; }
    .logo a { font-size: 18px; }

    /* Hide desktop search, show mobile controls aligned right */
    .search-bar { display: none; }
    .search-toggle { display: block; margin-left: auto; }
    .menu-toggle { display: block; }

    /* Nav becomes vertical dropdown */
    .nav-bar { display: none; overflow: hidden; }
    .nav-bar.show { display: block; }
    .nav-bar ul { flex-direction: column; }
    .nav-bar li a { padding: 12px 16px; border-bottom: 1px solid #f5f5f5; }

    /* Grid 3 cols */
    .video-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }

    .section-hd h2 { font-size: 16px; }
    .section-hd { padding: 16px 0 10px; }

    /* Rec list: horizontal layout on mobile */
    .rec-list { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-start; }
    .rec-list .rec-img { width: 100px; flex-shrink: 0; margin-bottom: 0; }
    .rec-list .rec-item { flex: 1; min-width: 120px; }

    /* List page: hide sidebar categories on mobile (use nav-bar instead) */
    .layout-right .sidebar-box:has(.submenu) { display: none; }

    /* Detail page */
    .video-detail { flex-direction: column; padding: 16px; gap: 16px; }
    .video-detail .thumb { width: 100%; max-width: 200px; }
    .video-detail .detail h1 { font-size: 18px; }
    .video-source { padding: 12px; }
    .video-desc { padding: 16px; }

    .breadcrumb { padding: 10px 0; font-size: 12px; }
    .footer-links a { margin: 0 6px; font-size: 12px; }

    /* Pagination: wrap and compact on mobile */
    .paging { padding: 16px 0 20px; }
    .paging ul { gap: 4px; }
    .paging li a { padding: 5px 8px; font-size: 12px; white-space: nowrap; }
}

/* ============================================
   Responsive: Small phone (<=480px)
   ============================================ */
@media (max-width: 480px) {
    .layout { padding: 0 10px; }

    /* Grid 2 cols */
    .video-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .video-grid .item .info { padding: 6px 8px; }
    .video-grid .item .info .title { font-size: 12px; }
    .video-grid .item .thumb .play-ico { width: 32px; height: 32px; }
    .video-grid .item .thumb .play-ico::after { border-width: 6px 0 6px 10px; }

    .play-btn a { padding: 5px 12px; font-size: 12px; }
    .play-btn { gap: 6px; }

    .video-detail .detail p { font-size: 13px; }

    .paging a, .paging span, .paging li a { padding: 4px 6px; font-size: 11px; }
    .paging ul { gap: 2px; }

    .rank-list { display: block; }
    .rank-list li { width: 100%; }
}