/* roulang page: index */
:root{
 --ink:#202326;--muted:#70777b;--paper:#f5f3ef;--surface:#fffefa;--line:#dedbd4;
 --coal:#202326;--coal-2:#2c3032;--coral:#d7654f;--coral-dark:#b84b3a;
 --teal:#3c8179;--gold:#c18a47;--radius:8px;--shadow:0 10px 28px rgba(32,35,38,.08);
 --container:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.section{padding:82px 0;border-top:1px solid rgba(32,35,38,.06)}
.section.alt{background:#eeece7}
.section.dark{background:var(--coal);color:#fff}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--coral);font-size:12px;font-weight:800;letter-spacing:1px;text-transform:uppercase;margin-bottom:10px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
h1,h2,h3{line-height:1.25;letter-spacing:0}
h1{font-size:clamp(36px,5vw,68px);max-width:760px}
h2{font-size:clamp(26px,3vw,38px)}
h3{font-size:18px}
.section-head p{max-width:610px;color:var(--muted);font-size:15px}
.dark .section-head p{color:#aeb5b4}
.header{position:sticky;top:0;z-index:30;background:rgba(245,243,239,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.navbar{height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;min-width:max-content}
.brand-mark{width:40px;height:40px;background:var(--coral);color:#fff;display:grid;place-items:center;border-radius:6px;font-weight:900;font-size:17px;box-shadow:4px 4px 0 rgba(32,35,38,.13)}
.brand-name{font-weight:900;font-size:16px;max-width:190px;line-height:1.2}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{padding:9px 11px;color:#535a5d;font-size:14px;border-radius:5px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--coral-dark);background:#f0e1dc}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.icon-btn{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:6px;display:grid;place-items:center;color:var(--ink);transition:.2s}
.icon-btn:hover{background:#fff;border-color:var(--coral);color:var(--coral)}
.menu-btn{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:5px;font-weight:700;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--coral);color:#fff}
.btn-primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 7px 14px rgba(183,75,58,.2)}
.btn-outline{border-color:#8e9694;color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--coral);color:var(--coral-dark);background:#fff}
.btn-light{background:#fff;color:var(--coal)}
.btn-light:hover{background:#f4d7d0;transform:translateY(-2px)}
.hero{min-height:650px;color:#fff;position:relative;display:flex;align-items:center;overflow:hidden;background:#242728}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(22,25,26,.96) 0%,rgba(22,25,26,.78) 42%,rgba(22,25,26,.28) 100%),url("https://images.unsplash.com/photo-1489599849927-2ee91cede3ba?auto=format&fit=crop&w=2200&q=86");background-size:cover;background-position:center}
.hero-content{position:relative;z-index:1;padding:100px 0 82px}
.hero .eyebrow{color:#f3a08d}
.hero-subtitle{font-size:19px;color:#f3d1c9;margin:18px 0 16px;font-weight:600}
.hero-copy{max-width:680px;color:#d7ddda;font-size:16px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-strip{position:relative;z-index:1;margin-top:64px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.22);padding-top:22px;max-width:800px}
.hero-stat{border-right:1px solid rgba(255,255,255,.18);padding-right:20px;margin-right:20px}
.hero-stat:last-child{border:0}
.hero-stat strong{display:block;font-size:26px;color:#fff}
.hero-stat span{color:#b8c0bd;font-size:13px}
.guide{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);background:var(--surface)}
.guide-item{padding:28px 24px;border-right:1px solid var(--line);position:relative}
.guide-item:last-child{border:0}
.guide-num{font-size:13px;color:var(--coral);font-weight:900;letter-spacing:1px}
.guide-item h3{margin:14px 0 8px}
.guide-item p{font-size:14px;color:var(--muted);line-height:1.7}
.poster-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.poster-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;min-width:0}
.poster-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9a69d}
.poster-img{aspect-ratio:4/5;position:relative;background:#d5d2ca}
.poster-img img{height:100%}
.poster-overlay{position:absolute;inset:auto 0 0;padding:35px 12px 12px;background:linear-gradient(transparent,rgba(20,22,23,.75));color:#fff;font-size:12px}
.card-body{padding:15px}
.card-title{font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-meta{display:flex;justify-content:space-between;gap:8px;margin-top:9px;color:var(--muted);font-size:12px}
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;background:#e3f0ed;color:#317267;font-size:11px;font-weight:800;white-space:nowrap}
.badge.coral{background:#f7e0db;color:var(--coral-dark)}
.score{color:var(--gold);font-weight:800}
.featured-card{grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr}
.featured-card .poster-img{aspect-ratio:auto;min-height:260px}
.featured-card .card-body{display:flex;flex-direction:column;justify-content:center;padding:26px}
.featured-card .card-title{font-size:24px;white-space:normal}
.featured-card p{color:var(--muted);font-size:14px;margin:12px 0 18px}
.popular-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.popular-card{display:grid;grid-template-columns:150px 1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s}
.popular-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.popular-card img{height:100%;min-height:150px}
.popular-info{padding:18px}
.popular-info h3{margin-bottom:12px}
.popular-info p{font-size:13px;color:var(--muted);margin:8px 0}
.tag-row{display:flex;flex-wrap:wrap;gap:7px}
.tag{font-size:11px;color:#5e696a;background:#edf0ed;border:1px solid #dfe5e1;padding:2px 7px;border-radius:4px}
.channel-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.channel{padding:25px 20px;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--coral);border-radius:var(--radius);transition:.2s}
.channel:nth-child(2){border-top-color:var(--teal)}.channel:nth-child(3){border-top-color:var(--gold)}.channel:nth-child(4){border-top-color:#7c768e}.channel:nth-child(5){border-top-color:#71808a}
.channel:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.channel-number{font-size:12px;color:var(--muted);font-weight:800}
.channel h3{margin:12px 0 9px}
.channel p{font-size:13px;color:var(--muted);line-height:1.7}
.rank-wrap{display:grid;grid-template-columns:1fr .8fr;gap:44px;align-items:start}
.rank-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.rank-row{display:grid;grid-template-columns:42px 1fr 80px 58px 70px;align-items:center;gap:10px;padding:13px 18px;border-bottom:1px solid var(--line);font-size:13px}
.rank-row:last-child{border-bottom:0}
.rank-no{font-size:17px;font-weight:900;color:#88908d}
.rank-row:nth-child(-n+3) .rank-no{color:var(--coral)}
.rank-title{font-weight:800}
.rank-heat{color:var(--muted)}
.rank-score{color:var(--gold);font-weight:800}
.data-panel{background:#2c3032;color:#fff;border-radius:var(--radius);padding:28px}
.data-panel h3{font-size:22px;margin-bottom:18px}
.data-line{display:flex;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.14);padding:15px 0;color:#bbc2bf}
.data-line strong{color:#fff;font-size:20px}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.news-item{display:grid;grid-template-columns:130px 1fr;gap:16px;background:var(--surface);border:1px solid var(--line);padding:12px;border-radius:var(--radius);transition:.2s}
.news-item:hover{border-color:#c8a69e;transform:translateY(-2px)}
.news-item img{height:100%;min-height:100px;border-radius:4px}
.news-date{display:block;color:var(--coral-dark);font-size:12px;margin:6px 0}
.news-item p{font-size:13px;color:var(--muted);line-height:1.6}
.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.scenario{padding:24px;background:#fff;border-left:4px solid var(--coral);box-shadow:0 4px 14px rgba(32,35,38,.05)}
.scenario:nth-child(2){border-left-color:var(--teal)}.scenario:nth-child(3){border-left-color:var(--gold)}.scenario:nth-child(4){border-left-color:#7c768e}
.scenario h3{margin-bottom:8px}.scenario p{color:var(--muted);font-size:14px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);margin-top:42px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric{padding:24px 20px;border-right:1px solid var(--line)}.metric:last-child{border:0}
.metric strong{display:block;font-size:32px;color:var(--coral-dark)}.metric span{color:var(--muted);font-size:13px}
.faq-list{max-width:900px;margin:auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-question{width:100%;background:none;text-align:left;padding:20px 4px;display:flex;justify-content:space-between;align-items:center;font-weight:800;color:var(--ink)}
.faq-question i{color:var(--coral);transition:.2s}.faq-answer{display:none;padding:0 40px 20px 4px;color:var(--muted);line-height:1.8}
.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question i{transform:rotate(45deg)}
.notice{background:#e9eeeb;border:1px solid #cbd8d3;padding:24px 28px;display:flex;gap:18px;align-items:flex-start;border-radius:var(--radius)}
.notice i{color:var(--teal);flex:none;margin-top:4px}.notice h3{margin-bottom:5px}.notice p{color:#52615e;font-size:14px}
.cta{background:var(--coral);color:#fff;padding:64px 0}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px}.cta h2{max-width:720px}.cta p{color:#f9ddd7;margin-top:10px;max-width:650px}
.footer{background:#1c1f20;color:#d3d8d5;padding:62px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px}
.footer h3{color:#fff;font-size:15px;margin-bottom:16px}.footer p,.footer a{color:#9da6a2;font-size:13px}.footer a{display:block;margin:7px 0;transition:.2s}.footer a:hover{color:#f08a76}
.footer-brand{font-size:20px;font-weight:900;color:#fff;margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:18px;color:#84908b;font-size:12px;display:flex;justify-content:space-between;gap:16px}
:focus-visible{outline:3px solid rgba(215,101,79,.45);outline-offset:3px}
@media(max-width:1024px){
 .nav-links{gap:0}.nav-links a{padding:9px 7px;font-size:13px}.channel-grid{grid-template-columns:repeat(3,1fr)}
 .poster-grid{grid-template-columns:repeat(3,1fr)}.poster-card:nth-child(1){grid-column:span 2}
 .rank-wrap{grid-template-columns:1fr}.scenario-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
 .container{width:min(100% - 28px,var(--container))}.navbar{height:68px}.brand-name{font-size:14px;max-width:155px}
 .menu-btn{display:grid;margin-left:auto}.nav-actions{margin-left:0}.nav-actions .btn{display:none}
 .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 14px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
 .nav-links.show{display:flex}.nav-links a{padding:12px 10px}.nav-links a.active{background:#f0e1dc}
 .hero{min-height:650px}.hero-content{padding:78px 0 58px}.hero-copy{font-size:15px}.hero-strip{grid-template-columns:repeat(2,1fr);gap:18px}.hero-stat{border:0;margin:0;padding:0}
 .section{padding:60px 0}.section-head{display:block;margin-bottom:24px}.section-head p{margin-top:12px}
 .guide{grid-template-columns:repeat(2,1fr)}.guide-item:nth-child(2){border-right:0}.guide-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .poster-grid{grid-template-columns:repeat(2,1fr);gap:12px}.featured-card{grid-column:span 2}.featured-card .poster-img{min-height:220px}
 .popular-grid,.news-grid{grid-template-columns:1fr}.channel-grid{grid-template-columns:repeat(2,1fr)}
 .rank-row{grid-template-columns:32px 1fr 62px 50px}.rank-row .badge{display:none}.rank-heat{font-size:12px}
 .metrics{grid-template-columns:repeat(2,1fr)}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .cta-inner{display:block}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
}
@media(max-width:520px){
 h1{font-size:38px}.hero-subtitle{font-size:16px}.hero-strip{margin-top:42px}.guide{grid-template-columns:1fr}.guide-item{border-right:0!important;border-bottom:1px solid var(--line)!important}.guide-item:last-child{border-bottom:0!important}
 .poster-grid{grid-template-columns:repeat(2,1fr)}.featured-card{display:block}.featured-card .poster-img{aspect-ratio:4/3;min-height:0}.featured-card .card-body{padding:18px}.featured-card .card-title{font-size:20px}
 .popular-card{grid-template-columns:105px 1fr}.popular-card img{min-height:130px}.popular-info{padding:14px}.popular-info h3{font-size:16px}
 .channel-grid,.scenario-grid{grid-template-columns:1fr}.rank-row{grid-template-columns:29px 1fr 53px}.rank-score{font-size:12px}.rank-heat{display:none}
 .news-item{grid-template-columns:94px 1fr}.news-item img{min-height:90px}.news-item h3{font-size:15px}.news-item p{display:none}
 .metrics{grid-template-columns:1fr 1fr}.metric{padding:18px 12px}.metric strong{font-size:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.footer-brand{font-size:17px}
}