/* roulang page: index */
:root{
  --bg:#1E1A2E;
  --bg-deep:#171422;
  --panel:#262138;
  --paper:#F4EEE2;
  --paper-card:#FBF7EC;
  --paper-line:#D5CBB6;
  --ink:#2A2438;
  --ink-2:#5B5470;
  --amber:#F2A33C;
  --coral:#E2607A;
  --jade:#3FBF9F;
  --text:#F3EFE6;
  --text-2:#B9B2C7;
  --text-3:#8A8398;
  --line:#3A3350;
  --r:3px;
  --hard:4px 4px 0 #0F0D18;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.2px;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.wrap{max-width:1220px;margin:0 auto;padding:0 24px}
section{padding:72px 0}
.sec-deep{background:var(--bg-deep)}
.sec-paper{background:var(--paper);color:var(--ink)}
.sec-paper .sec-head p{color:var(--ink-2)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:30px;line-height:1.3;font-weight:700}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--text-2)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:2px;color:var(--amber);margin-bottom:12px;text-transform:uppercase}
.btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 24px;
  font-size:15px;font-weight:600;border-radius:2px;border:2px solid transparent;
  transition:transform .12s,box-shadow .12s,background .12s,color .12s,border-color .12s;
}
.btn-primary{background:var(--amber);color:#231A08;border-color:var(--amber);box-shadow:4px 4px 0 #0F0D18}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 #0F0D18}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber);transform:translate(-2px,-2px);box-shadow:4px 4px 0 #0F0D18}

/* header */
.site-head{position:sticky;top:0;z-index:60;background:var(--bg-deep);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;gap:26px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:32px;height:32px;display:grid;place-items:center;background:var(--amber);color:#231A08;font-weight:700;font-size:16px;border-radius:2px;box-shadow:3px 3px 0 #0F0D18}
.brand-name{font-size:18px;font-weight:600;letter-spacing:.5px}
.nav{display:flex;gap:24px;margin-left:auto}
.nav a{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:color .12s}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--amber);opacity:0;transition:opacity .12s}
.nav a:hover,.nav a.is-active{color:var(--text)}
.nav a:hover::after,.nav a.is-active::after{opacity:1}
.head-cta{margin-left:24px;min-height:38px;padding:0 18px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;border:2px solid var(--line);border-radius:2px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text)}

/* hero */
.hero{
  padding:84px 0 76px;border-bottom:1px solid var(--line);
  background:linear-gradient(rgba(23,20,34,.9),rgba(30,26,46,.96)),url("/assets/images/fbb771c334faf76b.jpg") center/cover no-repeat;
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:.6px}
.hero h1 .hl{color:var(--amber);box-shadow:inset 0 -12px 0 rgba(242,163,60,.16)}
.hero-sub{margin-top:16px;font-size:17px;color:var(--text-2)}
.hero-text{margin-top:14px;font-size:16px;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border:2px solid var(--line);border-radius:var(--r);box-shadow:6px 6px 0 #0F0D18}

/* pain */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain-item{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:22px 20px;box-shadow:var(--hard);transition:transform .12s,border-color .12s}
.pain-item:hover{transform:translate(-2px,-2px);border-color:var(--amber)}
.pain-item i{display:block;width:14px;height:14px;background:var(--coral);border-radius:2px;margin-bottom:14px}
.pain-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.pain-item p{font-size:14px;color:var(--text-2);line-height:1.75}

/* solution */
.solution{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.solution h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:18px}
.solution p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.solution img{width:100%;aspect-ratio:4/3;object-fit:cover;border:2px solid var(--line);border-radius:var(--r);box-shadow:6px 6px 0 #0F0D18}

/* poster grid */
.poster-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.poster-card{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:10px;box-shadow:var(--hard);display:flex;flex-direction:column;transition:transform .12s,border-color .12s}
.poster-card:hover{transform:translate(-2px,-2px);border-color:var(--amber)}
.poster{position:relative;aspect-ratio:2/3;overflow:hidden;border-radius:2px;background:#0F0D18}
.poster img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;top:8px;left:8px;font-family:var(--mono);font-size:11px;line-height:1;padding:5px 6px;border-radius:2px;font-weight:700;white-space:nowrap}
.b-hd{background:var(--jade);color:#0E2A22}
.b-bd{background:var(--amber);color:#241A08}
.b-ep{background:var(--coral);color:#2A0E15}
.poster-title{margin-top:10px;font-size:15px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster-meta{margin-top:6px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
.score{color:var(--amber);font-weight:700}

/* hot (paper) */
.hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.hot-card{display:grid;grid-template-columns:96px 1fr;gap:16px;background:var(--paper-card);border:2px solid var(--paper-line);border-radius:var(--r);padding:14px;box-shadow:4px 4px 0 #CFC4AC;transition:transform .12s,border-color .12s}
.hot-card:hover{transform:translate(-2px,-2px);border-color:var(--amber)}
.hot-thumb{aspect-ratio:2/3;overflow:hidden;border-radius:2px;background:#E4DCCA}
.hot-thumb img{width:100%;height:100%;object-fit:cover}
.hot-card h3{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5}
.hot-desc{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--ink-2)}
.hot-meta{margin-top:10px;display:flex;align-items:center;gap:10px;font-size:12.5px;font-family:var(--mono);color:var(--ink-2)}
.tag-bd{background:var(--amber);color:#241A08;padding:2px 6px;border-radius:2px;font-weight:700}

/* category */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-item{background:var(--panel);border:2px solid var(--line);border-left:3px solid var(--amber);border-radius:var(--r);padding:22px 20px;display:flex;flex-direction:column;gap:10px;transition:transform .12s,border-color .12s}
.cat-item:hover{transform:translate(-2px,-2px)}
.cat-item h3{font-size:18px;font-weight:700}
.cat-item p{font-size:14px;color:var(--text-2);line-height:1.75}
.cat-item a{margin-top:auto;font-size:13.5px;color:var(--amber);font-weight:600}
.cat-item a:hover{text-decoration:underline}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step{border-top:2px dashed var(--line);padding-top:20px}
.step-no{font-family:var(--mono);font-size:34px;line-height:1;color:var(--amber);font-weight:700}
.step h3{margin-top:12px;font-size:17px;font-weight:600}
.step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75}

/* rank */
.rank-list{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.rank-list li{display:grid;grid-template-columns:40px minmax(0,1fr) auto 56px;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);min-height:52px}
.rank-no{font-family:var(--mono);font-size:20px;color:var(--text-3);font-weight:700}
.rank-list li:nth-child(-n+3) .rank-no{color:var(--amber)}
.rank-name{font-size:15.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-tag{font-size:12px;color:var(--text-3);border:1px solid var(--line);padding:1px 6px;border-radius:2px}
.rank-score{font-family:var(--mono);font-size:15px;color:var(--amber);text-align:right;font-weight:700}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:26px 20px;box-shadow:var(--hard)}
.stat-num{font-family:var(--mono);font-size:34px;line-height:1.1;color:var(--amber);font-weight:700}
.stat-num small{font-size:14px;color:var(--text-2);margin-left:4px;font-weight:400}
.stat p{margin-top:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}

/* quotes */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote{position:relative;background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:24px 20px}
.quote::before{content:"";position:absolute;top:18px;right:18px;width:10px;height:10px;background:var(--amber)}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;flex:none;display:grid;place-items:center;background:var(--bg-deep);border:2px solid var(--line);border-radius:2px;color:var(--amber);font-weight:700;font-size:16px}
.quote-head h3{font-size:15px;font-weight:600}
.quote-head span{display:block;font-size:12.5px;color:var(--text-3);font-weight:400}
.quote p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* crowd */
.crowd{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.crowd-item{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:22px 20px;transition:transform .12s,border-color .12s}
.crowd-item:hover{transform:translate(-2px,-2px);border-color:var(--amber)}
.crowd-item h3{font-size:16.5px;font-weight:600;display:flex;align-items:center;gap:10px}
.crowd-item h3::before{content:"";width:8px;height:8px;background:var(--jade);border-radius:1px;flex:none}
.crowd-item p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}

/* topic */
.topic{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
.topic-lead{position:relative;border:2px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:6px 6px 0 #0F0D18;min-height:280px}
.topic-lead img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.topic-lead figcaption{position:absolute;left:0;right:0;bottom:0;padding:22px 20px;background:linear-gradient(transparent,rgba(15,13,24,.94));}
.topic-lead h3{font-size:19px;font-weight:700}
.topic-lead p{margin-top:6px;font-size:13.5px;color:var(--text-2)}
.topic-list{display:grid;gap:14px}
.topic-list li{background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:18px 20px;transition:transform .12s,border-color .12s}
.topic-list li:hover{transform:translate(-2px,-2px);border-color:var(--amber)}
.topic-list h3{font-size:16px;font-weight:600}
.topic-list p{margin-top:6px;font-size:13.5px;color:var(--text-2);line-height:1.7}

/* news */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 36px}
.news-item{display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:center;padding-bottom:16px;border-bottom:1px dashed var(--line)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;border-radius:2px;border:1px solid var(--line)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item h3{font-size:15.5px;font-weight:600;line-height:1.6}
.news-item h3:hover{color:var(--amber)}
.news-date{margin-top:8px;font-family:var(--mono);font-size:12.5px;color:var(--text-3)}

/* meters */
.meters{display:grid;gap:20px;max-width:900px}
.meter-top{display:flex;justify-content:space-between;align-items:baseline;font-size:14.5px;margin-bottom:8px}
.meter-val{font-family:var(--mono);color:var(--jade);font-weight:700}
.meter-bar{height:10px;background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 12px)}
.meter-bar span{display:block;height:100%;background:repeating-linear-gradient(90deg,var(--jade) 0 8px,transparent 8px 12px)}

/* faq */
.faq{max-width:900px}
.faq details{background:var(--panel);border:2px solid var(--line);border-left:3px solid var(--line);border-radius:var(--r);margin-bottom:12px;transition:border-color .12s}
.faq details[open]{border-left-color:var(--amber)}
.faq summary{position:relative;list-style:none;cursor:pointer;padding:16px 52px 16px 18px;font-size:15.5px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:20px;color:var(--amber);line-height:1}
.faq details[open] summary::after{content:"−"}
.faq p{padding:0 18px 18px;font-size:14.5px;color:var(--text-2);line-height:1.85}

/* final cta */
.final{background:var(--amber);color:#231A08;border-top:2px solid #C9862B;border-bottom:2px solid #C9862B}
.final h2{font-size:30px;line-height:1.3;font-weight:700}
.final p{margin-top:12px;font-size:15.5px;color:#4A3512;max-width:44em}
.final-actions{margin-top:26px}
.final .btn-primary{background:#231A08;color:var(--amber);border-color:#231A08;box-shadow:4px 4px 0 rgba(35,26,8,.35)}
.final .btn-primary:hover{box-shadow:6px 6px 0 rgba(35,26,8,.35)}

/* footer */
.site-foot{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.foot-brand .brand-name{display:inline-block;vertical-align:middle;margin-left:8px}
.foot-brand p{margin-top:14px;font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:26em}
.foot-title{font-size:13.5px;font-weight:600;color:var(--text);letter-spacing:1px;margin-bottom:14px}
.foot-grid ul li{margin-bottom:10px}
.foot-grid ul a{font-size:13.5px;color:var(--text-3)}
.foot-grid ul a:hover{color:var(--amber)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:20px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);font-family:var(--mono)}

@media (max-width:1024px){
  .nav{position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;gap:0;background:var(--bg-deep);border-bottom:1px solid var(--line);padding:8px 24px 18px;margin:0}
  .nav.is-open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav-toggle{display:flex}
  .head-cta{margin-left:12px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .solution{grid-template-columns:1fr;gap:32px}
  .poster-grid{grid-template-columns:repeat(3,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr;gap:24px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .quotes{grid-template-columns:repeat(2,1fr)}
  .crowd{grid-template-columns:repeat(2,1fr)}
  .topic{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  section{padding:56px 0}
  .hero{padding:60px 0 56px}
  .hero h1{font-size:31px}
  .sec-head h2,.solution h2,.final h2{font-size:24px}
  .poster-grid{grid-template-columns:repeat(3,1fr);gap:14px}
  .hot-grid{grid-template-columns:1fr}
  .rank-list{grid-template-columns:1fr;gap:0}
  .news-item{grid-template-columns:120px 1fr}
  .head-cta{display:none}
  .nav-toggle{margin-left:auto}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15.5px}
  .hero-text{font-size:14.5px}
  .poster-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .pain-grid,.cat-grid,.stats,.quotes,.crowd{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:10px}
  .news-thumb{aspect-ratio:16/9}
  .foot-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .stat-num{font-size:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}