/* roulang page: index */
:root{
  --bg:#12150F;--panel:#1A1E17;--panel2:#20251C;--line:#2A2F26;--stroke:#333A2C;
  --txt:#ECEFE8;--txt2:#9AA394;--txt3:#6F7869;
  --amber:#F0A22E;--olive:#6E8B3D;--orange:#FF5A36;
  --r:4px;--mono:ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--txt);background-color:var(--bg);
  background-image:linear-gradient(rgba(236,239,232,.026) 1px,transparent 1px),linear-gradient(90deg,rgba(236,239,232,.026) 1px,transparent 1px);
  background-size:24px 24px;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3{margin:0;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
section{scroll-margin-top:88px}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.band{padding:76px 0}
.band-alt{background:#151A12;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-head h2{font-size:26px;font-weight:800}
.lead{font-size:14px;color:var(--txt2);max-width:760px;margin-top:8px}
.more{font-size:13px;color:var(--amber);white-space:nowrap;padding:6px 0}
.more:hover{text-decoration:underline}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;font-size:14px;font-weight:700;border-radius:2px;transition:background .18s,transform .18s,border-color .18s}
.btn-primary{background:var(--amber);color:#12150F}
.btn-primary:hover{background:#F7B04A;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{border:1px solid var(--stroke);color:var(--txt)}
.btn-ghost:hover{border-color:var(--amber)}
.btn-sm{height:36px;padding:0 14px;font-size:13px}
/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(18,21,15,.78);border-bottom:1px solid transparent;transition:background .2s,border-color .2s}
.hdr.scrolled{background:#12150F;border-bottom-color:var(--line)}
.hdr-in{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:40px;height:40px;display:grid;place-items:center;border:2px solid var(--amber);border-radius:2px;font-family:var(--mono);font-weight:800;font-size:16px;color:#fff}
.brand-name{font-size:16px;font-weight:800}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{position:relative;font-size:14px;color:var(--txt2);padding:6px 0;transition:color .18s}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--amber);transition:width .2s ease-out}
.nav a:hover{color:var(--txt)}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav a.active{color:var(--txt)}
.hdr-act{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--stroke);border-radius:2px;color:var(--txt2);transition:color .18s,border-color .18s}
.icon-btn:hover{color:var(--txt);border-color:var(--amber)}
.burger{display:none;width:38px;height:38px;place-items:center;border:1px solid var(--stroke);border-radius:2px;color:var(--txt)}
/* drawer */
.drawer{position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:360px;z-index:80;background:var(--panel);border-left:1px solid var(--stroke);padding:22px 20px;display:flex;flex-direction:column;overflow-y:auto;transform:translateX(100%);transition:transform .24s ease-out}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{display:flex;align-items:center;gap:12px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;min-height:44px}
.drawer-nav .num{font-family:var(--mono);font-size:12px;color:var(--amber)}
.drawer-cta{margin-top:22px;width:100%}
.mask{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .2s}
.mask.open{opacity:1;pointer-events:auto}
/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 76px}
.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(45deg,rgba(240,162,46,.032) 0 2px,transparent 2px 9px);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--amber);letter-spacing:.04em}
.kicker::before{content:"";width:3px;height:14px;background:var(--amber)}
.hero h1{margin-top:16px;font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.2}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero-sub{margin-top:14px;font-size:15px;color:var(--txt);font-weight:600}
.hero-text{margin-top:12px;font-size:15px;color:var(--txt2);max-width:540px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-media{position:relative;border:1px solid var(--stroke);border-radius:var(--r);overflow:hidden;background:var(--panel)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::before,.hero-media::after{content:"";position:absolute;width:22px;height:22px;border:2px solid var(--amber);opacity:.85}
.hero-media::before{top:8px;left:8px;border-right:0;border-bottom:0}
.hero-media::after{bottom:8px;right:8px;border-left:0;border-top:0}
.hud-code{position:absolute;left:12px;bottom:10px;font-family:var(--mono);font-size:11px;color:#ECEFE8;opacity:.45}
/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{padding:22px 20px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat strong{font-family:var(--mono);font-size:34px;font-weight:800;line-height:1.1}
.stat .unit{font-size:12px;color:var(--txt3);margin-left:4px}
.stat p{font-size:13px;color:var(--txt2);margin-top:6px}
/* poster cards */
.grid-posters{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:10px;transition:border-color .2s,box-shadow .2s}
.card:hover{border-color:var(--amber);box-shadow:0 8px 24px -12px rgba(0,0,0,.8)}
.card-pic{position:relative;aspect-ratio:3/4;border-radius:3px;overflow:hidden;background:var(--panel2)}
.card-pic img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.card:hover .card-pic img{transform:scale(1.04)}
.badge{position:absolute;top:6px;left:6px;font-family:var(--mono);font-size:11px;line-height:1.6;padding:1px 5px;border:1px solid var(--olive);border-radius:2px;color:#CFE0B0;background:rgba(18,21,15,.84)}
.badge-amber{border-color:var(--amber);color:var(--amber)}
.card-t{margin-top:10px;font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:2px}
.score{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--orange)}
.card-meta{font-size:11px;color:var(--txt3)}
/* hot cards */
.grid-hot{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.hcard{display:flex;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:12px;transition:border-color .2s}
.hcard:hover{border-color:var(--amber)}
.hcard-pic{flex:0 0 38%;aspect-ratio:3/4;border-radius:3px;overflow:hidden;background:var(--panel2)}
.hcard-pic img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.hcard:hover .hcard-pic img{transform:scale(1.04)}
.hcard-body{display:flex;flex-direction:column;min-width:0}
.hcard-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.hcard-top h3{font-size:16px;font-weight:700}
.tag{font-family:var(--mono);font-size:11px;padding:1px 5px;border:1px solid var(--stroke);border-radius:2px;color:var(--txt2)}
.hcard-desc{margin-top:8px;font-size:12.5px;line-height:1.7;color:var(--txt2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.hcard-foot{margin-top:auto;padding-top:10px;display:flex;align-items:center;gap:10px}
/* categories */
.grid-cats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cat{position:relative;padding:18px 16px 42px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);transition:border-color .2s}
.cat:hover{border-color:var(--amber)}
.cat-num{font-family:var(--mono);font-size:12px;color:var(--amber)}
.cat h3{margin-top:6px;font-size:16px;font-weight:800}
.cat p{margin-top:8px;font-size:12.5px;line-height:1.7;color:var(--txt2)}
.cat .arrow{position:absolute;right:14px;bottom:14px;color:var(--txt3);transition:transform .2s,color .2s}
.cat:hover .arrow{transform:translateX(4px);color:var(--amber)}
/* rank */
.rank-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.rank-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
.rank-no{font-family:var(--mono);font-size:24px;font-weight:800;width:36px;flex:0 0 36px;color:transparent;-webkit-text-stroke:1px var(--txt3)}
.rank-item.top .rank-no{-webkit-text-stroke-color:var(--amber)}
.rank-item h3{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-info{margin-left:auto;display:flex;align-items:center;gap:10px;flex:0 0 auto}
.bar{width:52px;height:4px;background:var(--stroke);border-radius:2px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--olive)}
.heat{font-family:var(--mono);font-size:12px;color:var(--txt2)}
/* compare */
.cmp{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.cmp-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;border-top:1px solid var(--line)}
.cmp-row:first-child{border-top:0;background:var(--panel2)}
.cmp-row>div{padding:14px 16px;font-size:13.5px}
.cmp-row>div+div{border-left:1px solid var(--line)}
.cmp-head{font-size:13px;font-weight:700;color:var(--txt)}
.cmp-head.on{color:var(--amber)}
.cmp-label{color:var(--txt2)}
.ok{color:#B6D38A;font-family:var(--mono);margin-right:6px}
.no{color:var(--txt3);font-family:var(--mono);margin-right:6px}
.cmp-note{margin-top:12px;font-size:11.5px;color:var(--txt3)}
/* timeline */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.timeline::before{content:"";position:absolute;top:5px;left:0;right:0;height:1px;background:var(--line)}
.tl{position:relative;padding-top:24px}
.tl::before{content:"";position:absolute;top:0;left:0;width:10px;height:10px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 3px var(--bg)}
.tl-year{font-family:var(--mono);font-size:20px;font-weight:800;color:var(--txt)}
.tl h3{margin-top:6px;font-size:14px;font-weight:700}
.tl p{margin-top:4px;font-size:12.5px;color:var(--txt2);line-height:1.7}
/* news */
.grid-news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .2s}
.news:hover{border-color:var(--amber)}
.news-pic{aspect-ratio:16/9;overflow:hidden;background:var(--panel2)}
.news-pic img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.news:hover .news-pic img{transform:scale(1.04)}
.news-body{padding:12px 14px}
.news h3{font-size:15px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news time{display:block;margin-top:8px;font-family:var(--mono);font-size:12px;color:var(--txt3)}
/* assure */
.grid-assure{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.assure{display:flex;gap:12px;padding:18px 16px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r)}
.assure svg{flex:0 0 22px;color:var(--amber);margin-top:2px}
.assure h3{font-size:14px;font-weight:700}
.assure p{margin-top:4px;font-size:12px;color:var(--txt2);line-height:1.65}
/* quick */
.grid-quick{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.quick{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:56px;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-left:2px solid var(--amber);border-radius:var(--r);font-size:13.5px;transition:border-color .2s,color .2s}
.quick:hover{border-color:var(--amber);color:var(--amber)}
/* faq */
.faq{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);transition:box-shadow .2s}
.faq-item.open{box-shadow:inset 2px 0 0 var(--amber);padding-left:12px}
.faq-q{display:flex;align-items:center;gap:14px;width:100%;min-height:56px;padding:14px 0;text-align:left}
.faq-num{font-family:var(--mono);font-size:13px;color:var(--amber);flex:0 0 auto}
.faq-q h3{flex:1;font-size:16px;font-weight:700}
.sign{font-family:var(--mono);font-size:18px;color:var(--txt2);flex:0 0 auto}
.faq-a{display:none;padding:0 0 18px 34px;font-size:14px;line-height:1.8;color:var(--txt2)}
.faq-item.open .faq-a{display:block}
/* form */
.sub{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:36px;display:grid;grid-template-columns:1.3fr 1fr;gap:36px;position:relative}
.sub::before,.sub::after{content:"";position:absolute;width:20px;height:20px;border:2px solid var(--amber);opacity:.7}
.sub::before{top:8px;left:8px;border-right:0;border-bottom:0}
.sub::after{bottom:8px;right:8px;border-left:0;border-top:0}
.sub h2{font-size:26px;font-weight:800}
.sub p.sub-lead{margin-top:10px;font-size:14px;color:var(--txt2)}
.sub-list{list-style:none;margin:18px 0 0;padding:0}
.sub-list li{position:relative;padding-left:18px;margin-top:8px;font-size:13.5px;color:var(--txt2)}
.sub-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;background:var(--amber)}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--txt2);margin-bottom:6px}
input,select{width:100%;height:44px;padding:0 12px;background:#12150F;border:1px solid var(--stroke);border-radius:2px;color:var(--txt);font:inherit;font-size:14px}
select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#9AA394 50%),linear-gradient(135deg,#9AA394 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px;background-repeat:no-repeat}
input:focus,select:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 2px rgba(240,162,46,.22)}
.form-tip{margin-top:10px;font-size:11px;color:var(--txt3);line-height:1.7}
/* footer */
.ftr{background:#0E110C;border-top:1px solid var(--line);padding:56px 0 0}
.ftr-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.ftr h4{margin:0 0 14px;padding-left:10px;border-left:3px solid var(--amber);font-size:14px;font-weight:700}
.ftr p{font-size:13px;color:var(--txt2);line-height:1.8}
.ftr a{display:block;font-size:13px;color:var(--txt2);padding:5px 0;transition:color .18s}
.ftr a:hover{color:var(--txt)}
.ftr-brandline{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.ftr-bottom{margin-top:40px;border-top:1px solid var(--line);padding:16px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--txt3)}
@media (max-width:1024px){
  .nav,.hdr-act .btn-sm{display:none}
  .burger{display:grid}
  .hero{padding:48px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .grid-posters{grid-template-columns:repeat(3,1fr)}
  .grid-hot{grid-template-columns:1fr}
  .grid-cats{grid-template-columns:repeat(2,1fr)}
  .grid-news{grid-template-columns:repeat(2,1fr)}
  .grid-assure,.grid-quick{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .timeline{grid-template-columns:repeat(3,1fr);row-gap:28px}
  .timeline::before{right:0}
  .sub{grid-template-columns:1fr;gap:26px;padding:28px}
  .ftr-grid{grid-template-columns:1fr 1fr}
  .band{padding:60px 0}
}
@media (max-width:768px){
  .band{padding:52px 0}
  .grid-posters{grid-template-columns:repeat(2,1fr);gap:16px}
  .grid-news{grid-template-columns:1fr}
  .news{flex-direction:row}
  .news-pic{flex:0 0 96px;aspect-ratio:auto;min-height:84px}
  .rank-wrap{grid-template-columns:1fr;gap:0;padding:16px}
  .cmp-row{grid-template-columns:1fr 1fr}
  .cmp-row>div:first-child{grid-column:1 / -1;border-left:0;padding-bottom:4px;font-size:12px;color:var(--txt3)}
  .cmp-row>div+div{border-left:0}
  .cmp-row>div:nth-child(2){border-left:1px solid var(--line)}
  .timeline{grid-template-columns:1fr;padding-left:6px}
  .timeline::before{top:0;bottom:0;left:5px;right:auto;width:1px;height:auto}
  .tl{padding-top:0;padding-left:22px}
  .tl::before{top:6px}
  .sec-head h2{font-size:22px}
  .sub h2{font-size:22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-btns{flex-direction:column}
  .hero-btns .btn{width:100%}
  .grid-cats{grid-template-columns:1fr}
  .grid-assure,.grid-quick{grid-template-columns:1fr}
  .grid-posters{gap:12px}
  .stat{padding:16px 14px}
  .stat strong{font-size:26px}
  .ftr-grid{grid-template-columns:1fr}
  .sub{padding:20px}
  .faq-a{padding-left:0}
  .brand-name{font-size:15px}
}