/* roulang page: index */
:root{
  --orange:#F2621B;
  --orange-2:#FF8A3D;
  --orange-3:#FFB067;
  --mint:#1F9D7A;
  --mint-2:#34C0A0;
  --amber:#FFC145;
  --bg:#FFF7F0;
  --card:#FFFFFF;
  --line:#F3E2D5;
  --ink:#241610;
  --sub:#6B5A50;
  --grad:linear-gradient(135deg,#FFB067,#F2621B);
  --grad-mint:linear-gradient(135deg,#34C0A0,#1F9D7A);
  --r-lg:24px;
  --r-md:16px;
  --sh:0 10px 30px rgba(242,98,27,.10);
  --sh-h:0 16px 36px rgba(242,98,27,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:20px;font-weight:800;box-shadow:0 6px 16px rgba(242,98,27,.28)}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:20px;margin-left:6px}
.main-nav a{position:relative;font-size:15px;color:var(--sub);padding:6px 0;transition:color .2s ease-out}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.main-nav a:hover{color:var(--orange)}
.main-nav a:hover::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:999px;background:#FFF3E9;border:1px solid var(--line);transition:border-color .2s ease-out,box-shadow .2s ease-out}
.search-box:focus-within{border-color:var(--orange);box-shadow:0 0 0 3px rgba(242,98,27,.12)}
.search-box input{width:170px;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink)}
.search-box input::placeholder{color:#A79487}
.search-icon{color:var(--orange);font-size:15px;line-height:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(242,98,27,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(242,98,27,.4)}
.btn-ghost{background:#fff;color:var(--orange);border-color:#F7C9A8}
.btn-ghost:hover{background:#FFF3E9}
.btn-light{background:#fff;color:var(--orange)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(36,22,16,.22)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.nav-toggle{display:none}
.nav-btn{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:18px;align-items:center;justify-content:center;cursor:pointer}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-drawer nav{display:flex;flex-direction:column;padding:10px 24px 18px}
.mobile-drawer a{display:flex;align-items:center;min-height:44px;font-size:15px;color:var(--ink);border-bottom:1px solid #FAEDE2}
.mobile-drawer a:last-child{border-bottom:0}
.nav-toggle:checked ~ .mobile-drawer{display:block}

/* hero */
.hero{position:relative;overflow:hidden;background:#241610}
.hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/14cb334cabf925a9.jpg') center/cover no-repeat;opacity:.62}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(36,22,16,.94) 8%,rgba(120,52,20,.72) 48%,rgba(242,98,27,.42) 100%)}
.hero-inner{position:relative;z-index:2;padding:84px 0 88px;max-width:780px;color:#fff}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);font-size:13px;color:#fff}
.hero h1{font-size:clamp(28px,4.2vw,48px);line-height:1.15;font-weight:800;letter-spacing:-.5px;margin:18px 0 14px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,#FFE0B8,#FFC145);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{max-width:660px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.87)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px 42px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.2)}
.hero-stats strong{display:block;font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.3}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.72)}

/* section shell */
.section{padding:64px 0}
.section-alt{background:#FFF1E6}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.section-tag{display:inline-block;margin-bottom:12px;padding:4px 12px;border-radius:999px;background:#FFEBDD;color:var(--orange);font-size:13px;font-weight:600}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.5px}
.section-desc{max-width:680px;margin-top:8px;font-size:15px;color:var(--sub)}

/* stats */
.stats-grid{display:grid;grid-template-columns:1fr;gap:16px}
.stat-card{position:relative;overflow:hidden;padding:24px 22px 20px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.stat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.stat-dot{width:10px;height:10px;border-radius:50%;background:var(--grad-mint);margin-bottom:12px}
.stat-label{font-size:13px;color:var(--sub)}
.stat-value{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.35;margin:2px 0 6px}
.stat-value small{font-size:14px;font-weight:600;color:var(--sub);margin-left:4px}
.stat-note{font-size:14px;color:var(--sub)}

/* video cards */
.video-grid{display:grid;grid-template-columns:1fr;gap:16px}
.video-card{overflow:hidden;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.thumb{position:relative;overflow:hidden;background:#FFE3CE}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.video-card:hover .thumb img{transform:scale(1.04)}
.thumb-wide{aspect-ratio:16/9}
.badge{position:absolute;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.4;font-variant-numeric:tabular-nums}
.badge-time{left:10px;bottom:10px;background:rgba(36,22,16,.74);color:#fff}
.badge-hd{right:10px;top:10px;background:#fff;color:var(--orange);border:1px solid #F7C9A8}
.badge-new{left:10px;top:10px;background:var(--grad-mint);color:#fff}
.video-card h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;padding:14px 16px 4px;font-size:16px;font-weight:600;line-height:1.5}
.video-meta{padding:0 16px 16px;font-size:13px;color:var(--sub);font-variant-numeric:tabular-nums}

/* latest */
.latest-grid{display:grid;grid-template-columns:1fr;gap:16px}
.latest-card{display:grid;grid-template-columns:42% 1fr;align-items:center;gap:14px;padding:12px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.latest-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.latest-card .thumb{aspect-ratio:16/9;border-radius:var(--r-md)}
.latest-card h3{font-size:15px;font-weight:600;line-height:1.5}
.latest-info{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.chip-sm{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;background:#FFF3E9;color:#8A5A3B;border:1px solid #F7E0CE;font-variant-numeric:tabular-nums}
.chip-time{background:rgba(31,157,122,.12);color:var(--mint);border-color:rgba(31,157,122,.24)}

/* channels */
.channel-grid{display:grid;grid-template-columns:1fr;gap:16px}
.channel-card{display:flex;gap:16px;padding:22px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.channel-bar{flex:0 0 6px;width:6px;border-radius:6px;background:var(--grad)}
.channel-card h3{font-size:18px;font-weight:600;margin-bottom:6px}
.channel-card p{font-size:14px;color:var(--sub)}
.channel-link{display:inline-flex;align-items:center;gap:4px;min-height:44px;margin-top:6px;font-size:14px;font-weight:600;color:var(--orange)}
.channel-link:hover{text-decoration:underline}

/* rank */
.rank-grid{display:grid;grid-template-columns:1fr;gap:0 32px;padding:8px 22px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh)}
.rank-item{display:flex;align-items:center;gap:14px;padding:14px 6px;border-bottom:1px solid var(--line);transition:background .2s ease-out}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:#FFF3E9}
.rank-no{min-width:36px;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.4;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.rank-title{font-size:15px;font-weight:600;line-height:1.5}
.rank-meta{font-size:13px;color:var(--sub);font-variant-numeric:tabular-nums}
.rank-cat{margin-left:auto;padding:3px 10px;border-radius:999px;background:#FFEBDD;color:var(--orange);font-size:12px;white-space:nowrap}

/* topics */
.topic-grid{display:grid;grid-template-columns:1fr;gap:20px}
.topic-card{overflow:hidden;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.topic-card .thumb{aspect-ratio:4/3}
.topic-body{padding:18px 20px 22px}
.topic-count{display:inline-block;margin-bottom:10px;padding:3px 10px;border-radius:999px;background:var(--grad-mint);color:#fff;font-size:12px}
.topic-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.topic-body p{font-size:14px;color:var(--sub)}

/* playlists */
.list-grid{display:grid;grid-template-columns:1fr;gap:16px}
.list-card{padding:22px;border-radius:var(--r-lg);background:var(--card);border:1px dashed #EFD4BF;box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.list-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.list-card h3{font-size:17px;font-weight:700}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tags span{padding:5px 12px;border-radius:999px;background:#FFF3E9;border:1px solid #F7E0CE;color:#8A5A3B;font-size:13px}
.list-foot{margin-top:14px;font-size:13px;color:var(--sub)}

/* compare */
.compare-wrap{display:none}
table.compare{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh)}
.compare th,.compare td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.compare thead th{background:#FFF2E7;font-size:15px;font-weight:700}
.compare tbody th{font-weight:600}
.compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr{transition:background .2s ease-out}
.compare tbody tr:hover{background:#FFF8F2}
.compare-cards{display:grid;grid-template-columns:1fr;gap:14px}
.compare-card{padding:20px;border-radius:20px;background:var(--card);border:1px solid var(--line);box-shadow:var(--sh)}
.compare-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.compare-card li{position:relative;padding:6px 0 6px 24px;font-size:14px;color:var(--sub)}
.compare-card li::before{position:absolute;left:0;top:6px;font-weight:700}
.compare-card li.yes::before{content:"✓";color:var(--mint)}
.compare-card li.no::before{content:"—";color:#C0AA9C}

/* timeline */
.timeline{position:relative;max-width:860px;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#FFB067,#F2621B)}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-27px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px #FFF7F0}
.tl-badge{display:inline-block;margin-bottom:8px;padding:3px 10px;border-radius:999px;background:#FFEBDD;color:var(--orange);font-size:12px;font-weight:600}
.tl-item h3{font-size:17px;font-weight:600;margin-bottom:4px}
.tl-item p{font-size:14px;color:var(--sub)}

/* news */
.news-grid{display:grid;grid-template-columns:1fr;gap:18px}
.news-card{overflow:hidden;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.news-card:hover .thumb img{transform:scale(1.05)}
.news-card h3{padding:14px 18px 6px;font-size:16px;font-weight:600;line-height:1.55;transition:color .2s ease-out}
.news-card:hover h3{color:var(--orange)}
.news-date{padding:0 18px 16px;font-size:13px;color:var(--sub);font-variant-numeric:tabular-nums}

/* trust */
.trust-grid{display:grid;grid-template-columns:1fr;gap:16px}
.trust-card{display:flex;gap:16px;padding:22px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.trust-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--amber)}
.trust-icon{flex:0 0 48px;width:48px;height:48px;border-radius:var(--r-md);background:var(--grad);color:#fff;display:grid;place-items:center;font-size:20px;font-weight:700}
.trust-card h3{font-size:17px;font-weight:600;margin-bottom:6px}
.trust-card p{font-size:14px;color:var(--sub)}

/* quick */
.quick-grid{display:grid;grid-template-columns:1fr;gap:14px}
.quick-card{padding:18px 20px;border-radius:20px;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--amber);box-shadow:var(--sh)}
.quick-card h3{font-size:15px;font-weight:700;margin-bottom:6px}
.quick-card p{font-size:14px;color:var(--sub)}

/* faq */
.faq-list{display:grid;grid-template-columns:1fr;gap:12px;max-width:900px}
details.faq{overflow:hidden;border-radius:20px;background:var(--card);border:1px solid var(--line);box-shadow:var(--sh)}
details.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:20px;line-height:1;color:var(--orange);transition:transform .2s ease-out}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq p{padding:0 20px 20px;font-size:14px;color:var(--sub)}

/* subscribe */
.subscribe{display:grid;grid-template-columns:1fr;gap:28px;padding:28px;border-radius:var(--r-lg);background:linear-gradient(135deg,#FFF1E6,#FFE2CC);border:1px solid #F7DFCB}
.subscribe h2{font-size:26px;line-height:1.3;font-weight:700;margin-bottom:14px}
.points li{display:flex;gap:10px;margin-bottom:10px;font-size:15px;color:#4A382E}
.points li::before{content:"✓";font-weight:800;color:var(--mint)}
.form-card{padding:24px;border-radius:var(--r-lg);background:#fff;box-shadow:var(--sh)}
.form-card h3{font-size:16px;font-weight:700;margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.chip{position:relative;display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:999px;background:#FFF8F2;border:1px solid #F3D6C1;color:#8A5A3B;font-size:14px;cursor:pointer;transition:background .2s ease-out,border-color .2s ease-out,color .2s ease-out}
.chip input{position:absolute;opacity:0;width:0;height:0}
.chip:has(input:checked){background:#FFEBDD;border-color:var(--orange);color:var(--orange);font-weight:600}
.chip:focus-within{outline:2px solid var(--orange);outline-offset:2px}
.form-card input[type="email"]{width:100%;min-height:48px;padding:0 16px;border-radius:var(--r-md);border:1px solid var(--line);background:#FFFBF7;font-size:15px;color:var(--ink);outline:none;transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out}
.form-card input[type="email"]:focus{border-color:var(--orange);background:#fff;box-shadow:0 0 0 2px rgba(242,98,27,.25)}
.form-card .btn{width:100%;margin-top:14px}
.form-note{margin-top:12px;font-size:12px;color:var(--sub)}

/* footer */
.site-footer{background:#FFF1E6;border-top:1px solid var(--line);padding-top:52px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand .brand{margin-bottom:12px}
.footer-brand p{max-width:300px;font-size:14px;color:var(--sub)}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:12px}
.footer-col a{display:flex;align-items:center;min-height:34px;font-size:14px;color:var(--sub);transition:color .2s ease-out}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:36px;padding:18px 0;border-top:1px solid #F3DFCE;font-size:13px;color:#8A7365}

/* breakpoints */
@media (max-width:1024px){
  .main-nav{gap:14px}
  .search-box input{width:130px}
  .section-head h2{font-size:26px}
}
@media (max-width:768px){
  .main-nav,.search-box{display:none}
  .nav-btn{display:flex}
  .header-inner{height:64px;gap:12px}
  .section{padding:44px 0}
  .section-head h2{font-size:24px}
  .hero-inner{padding:56px 0 60px}
  .subscribe{padding:22px}
  .rank-grid{padding:6px 16px}
  .stat-value{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-name{font-size:16px}
  .header-actions .btn-sm{padding:0 14px;font-size:13px}
  .hero-stats{gap:12px 28px}
  .hero-stats strong{font-size:22px}
  .latest-card{grid-template-columns:46% 1fr}
  .rank-cat{display:none}
  .footer-bottom{font-size:12px}
}
@media (min-width:768px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .latest-grid{grid-template-columns:repeat(2,1fr)}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .list-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .rank-grid{grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(5,auto);grid-auto-flow:column}
  .compare-wrap{display:block}
  .compare-cards{display:none}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1024px){
  .section{padding:72px 0}
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .video-grid{grid-template-columns:repeat(4,1fr)}
  .latest-grid{grid-template-columns:repeat(3,1fr)}
  .channel-grid{grid-template-columns:repeat(3,1fr)}
  .topic-grid{grid-template-columns:repeat(3,1fr)}
  .list-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .subscribe{grid-template-columns:1fr minmax(0,420px);padding:44px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
}