/* roulang page: index */
:root{
  --c-bg:#0A0C0F;--c-surface:#12161B;--c-surface-2:#1A2027;
  --c-primary:#FF6A1A;--c-primary-hi:#FF8A3D;--c-accent:#1FE0A4;
  --c-text:#EDF1F5;--c-text-dim:#97A2AE;--c-line:rgba(255,255,255,.09);
  --r-card:14px;--r-panel:20px;--r-btn:10px;--r-pill:999px;
  --sh:0 12px 28px rgba(0,0,0,.45);
  --sh-hover:0 0 0 1px rgba(255,106,26,.45),0 0 22px rgba(255,106,26,.18);
  --container:1200px;--sp:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
section[id]{scroll-margin-top:84px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.overline{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;
  letter-spacing:.18em;color:var(--c-accent);margin-bottom:14px}
.overline::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-accent),transparent)}
/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(10,12,15,.82);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,106,26,.6),rgba(31,224,164,.55),transparent)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:.02em;flex:0 0 auto}
.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary),#C44A05);box-shadow:0 0 18px rgba(255,106,26,.35)}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--c-text-dim);padding:9px 0;transition:color .16s ease}
.nav-link:hover{color:#fff}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(255,106,26,.7);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);text-shadow:0 0 12px rgba(255,106,26,.55)}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.burger{display:none;width:44px;height:44px;border-radius:10px;cursor:pointer;
  background:var(--c-surface-2);border:1px solid var(--c-line);align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--c-text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.drawer{position:fixed;top:64px;right:0;width:min(84vw,320px);height:calc(100vh - 64px);z-index:90;
  background:var(--c-surface);border-left:1px solid var(--c-line);padding:26px 22px;
  display:flex;flex-direction:column;gap:6px;overflow:auto;
  transform:translateX(105%);transition:transform .22s ease}
.drawer.open{transform:none}
.drawer .nav-link{font-size:16px;padding:14px 0;border-bottom:1px solid var(--c-line)}
.drawer .nav-link::after{display:none}
.drawer .btn{margin-top:18px}
/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease}
.btn-primary{background:var(--c-primary);color:#0A0C0F}
.btn-primary:hover{background:var(--c-primary-hi);transform:translateY(-1px);box-shadow:0 0 22px rgba(255,106,26,.32)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-1px)}
.btn-sm{height:44px;padding:0 18px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-primary)}
.link-arrow::after{content:"→";transition:transform .16s ease}
.link-arrow:hover::after{transform:translateX(4px)}
/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-2.png) center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,15,.86),rgba(10,12,15,.95))}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding-top:78px;padding-bottom:78px}
.hero-copy h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:800;margin-bottom:18px}
.hero-copy h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{font-size:16px;line-height:1.85;color:var(--c-text-dim);max-width:33em;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.pill-row{display:flex;flex-wrap:wrap;gap:12px}
.pill{display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 15px;border-radius:var(--r-pill);
  background:var(--c-surface-2);border:1px solid var(--c-line);font-size:14px;color:var(--c-text-dim)}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}
.hero-art{border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh)}
.hero-art img{width:100%;aspect-ratio:16/9;object-fit:cover}
/* ---------- 通用板块 ---------- */
.section{padding:var(--sp) 0}
.section-head{margin-bottom:34px;max-width:760px}
.section-head h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;font-weight:700;margin-bottom:10px}
.section-head p{color:var(--c-text-dim);font-size:15px;margin:0}
/* ---------- 品牌主张 ---------- */
.claim-grid{display:grid;grid-template-columns:4fr 6fr;gap:56px;align-items:start}
.claim-lead h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;margin-bottom:14px}
.claim-lead p{color:var(--c-text-dim);font-size:15px}
.claim-list{display:grid;gap:6px}
.claim-item{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:22px 0;border-bottom:1px dashed var(--c-line)}
.claim-item:last-child{border-bottom:0}
.claim-num{font-size:14px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:.08em;padding-top:5px}
.claim-item h3{font-size:19px;line-height:1.5;margin-bottom:6px}
.claim-item p{color:var(--c-text-dim);font-size:15px;margin:0}
/* ---------- 理念交错 ---------- */
.story-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.story-row + .story-row{margin-top:76px}
.story-row.reverse .story-media{order:2}
.story-media{border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh)}
.story-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.story-copy h3{font-size:22px;line-height:1.45;margin-bottom:14px}
.story-copy p{color:var(--c-text-dim);font-size:16px;line-height:1.9;max-width:34em}
/* ---------- 精选拼图 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.card-feature{position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.card-feature:hover{transform:translateY(-4px);box-shadow:var(--sh),var(--sh-hover)}
.card-feature img{width:100%;object-fit:cover}
.cf-body{padding:18px}
.card-feature h3{font-size:17px;line-height:1.5;margin-bottom:6px}
.card-feature p{font-size:14px;line-height:1.7;color:var(--c-text-dim);margin:0}
.f-a{grid-column:span 4;grid-row:span 2}
.f-a img{aspect-ratio:16/9}
.f-a h3{font-size:21px}
.f-b,.f-c{grid-column:span 2}
.f-b img,.f-c img{aspect-ratio:3/2}
.f-d,.f-e{grid-column:span 3;display:grid;grid-template-columns:104px 1fr;align-items:center}
.f-d img,.f-e img{height:100%;aspect-ratio:1/1;object-fit:cover}
.f-d .cf-body,.f-e .cf-body{padding:16px 18px}
.f-d h3,.f-e h3{font-size:16px;margin:0}
/* ---------- 资讯卡片 ---------- */
.news-list{display:grid;gap:20px}
.card-news{position:relative;display:grid;grid-template-columns:240px 1fr;gap:22px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;
  overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.card-news::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform .22s ease}
.card-news:hover{transform:translateY(-4px);box-shadow:var(--sh),var(--sh-hover)}
.card-news:hover::before{transform:scaleY(1)}
.news-thumb{border-radius:10px;overflow:hidden;display:block}
.news-thumb img{width:100%;aspect-ratio:8/5;object-fit:cover}
.news-body{display:flex;flex-direction:column;min-width:0}
.badge-cat{display:inline-flex;align-items:center;align-self:flex-start;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:700;color:var(--c-accent);
  border:1px solid rgba(31,224,164,.45);background:rgba(31,224,164,.08)}
.news-title{font-size:17px;line-height:1.5;font-weight:700;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--c-primary)}
.news-desc{font-size:14px;line-height:1.7;color:var(--c-text-dim);margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;
  font-size:13px;color:var(--c-text-dim);font-variant-numeric:tabular-nums}
.news-more{margin-top:28px}
.empty-state{display:grid;place-items:center;gap:10px;padding:56px 24px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);color:var(--c-text-dim)}
.empty-state strong{color:var(--c-text);font-size:16px;font-weight:700}
/* ---------- 数据与评价 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 22px}
.stat b{display:block;font-size:clamp(26px,3vw,34px);line-height:1.2;font-weight:700;
  color:var(--c-primary);font-variant-numeric:tabular-nums;margin-bottom:6px}
.stat span{font-size:14px;color:var(--c-text-dim)}
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px}
.quote{position:relative;background:var(--c-surface-2);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 26px 26px 30px}
.quote::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:2px;background:var(--c-accent)}
.quote p{font-size:15px;line-height:1.85;color:var(--c-text);margin-bottom:16px}
.quote footer{font-size:13px;color:var(--c-text-dim)}
/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:920px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 22px;font-size:16px;font-weight:700;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:0 0 auto;width:14px;height:14px;
  background:linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
             linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform .18s ease}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px}
.faq-inner{border-left:2px solid var(--c-accent);padding-left:16px;color:var(--c-text-dim);font-size:15px;line-height:1.9}
/* ---------- CTA ---------- */
.cta-panel{position:relative;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  background:linear-gradient(150deg,var(--c-surface-2),var(--c-surface));
  border:1px solid var(--c-line);border-radius:var(--r-panel);padding:48px}
.cta-panel::before{content:"";position:absolute;top:-90px;right:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,26,.22),transparent 68%)}
.cta-panel::after{content:"";position:absolute;bottom:-110px;left:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,224,164,.16),transparent 70%)}
.cta-copy{position:relative}
.cta-copy h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;margin-bottom:12px}
.cta-copy p{color:var(--c-text-dim);font-size:15px;margin:0}
.cta-form{position:relative;display:flex;flex-wrap:wrap;gap:12px}
.input{flex:1 1 240px;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--c-surface-2);border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color .16s ease,box-shadow .16s ease}
.input::placeholder{color:var(--c-text-dim)}
.input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,106,26,.18)}
.input.error{border-color:#FF5A5A;box-shadow:0 0 0 3px rgba(255,90,90,.14)}
.form-msg{flex-basis:100%;margin:0;min-height:18px;font-size:12px;line-height:1.6;color:#FF8A8A}
.form-msg.ok{color:var(--c-accent)}
/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--c-line);background:var(--c-surface)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.footer-brand p{font-size:14px;color:var(--c-text-dim);line-height:1.8;margin:14px 0 0;max-width:30em}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-col a,.footer-col p{display:block;font-size:14px;color:var(--c-text-dim);margin-bottom:10px}
.footer-col a{transition:color .16s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--c-line);padding:20px 0;font-size:12px;color:var(--c-text-dim)}
/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none}
  .burger{display:flex}
  .nav-actions{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding-top:56px;padding-bottom:56px}
  .hero-art{order:-1}
  .claim-grid{grid-template-columns:1fr;gap:32px}
  .story-row{grid-template-columns:1fr;gap:28px}
  .story-row.reverse .story-media{order:0}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .f-a{grid-column:span 2;grid-row:auto}
  .f-b,.f-c,.f-d,.f-e{grid-column:span 1}
  .f-d,.f-e{grid-template-columns:88px 1fr}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.85}
  .container{padding:0 20px}
  .section{padding:60px 0}
  .section-head{margin-bottom:26px}
  .card-news{grid-template-columns:1fr;gap:16px}
  .news-thumb img{aspect-ratio:16/9}
  .feature-grid{grid-template-columns:1fr}
  .f-a,.f-b,.f-c{grid-column:span 1}
  .f-d,.f-e{grid-column:span 1;grid-template-columns:80px 1fr}
  .stat-bar{grid-template-columns:1fr 1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .hero-cta .btn{width:100%}
  .cta-form .btn{width:100%}
  .stat-bar{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --c-bg:#0A0C0F;--c-surface:#12161B;--c-surface-2:#1A2027;
  --c-primary:#FF6A1A;--c-primary-hi:#FF8A3D;--c-accent:#1FE0A4;
  --c-text:#EDF1F5;--c-text-dim:#97A2AE;--c-line:rgba(255,255,255,.09);
  --r-btn:10px;--r-card:14px;--r-panel:20px;
  --sh:0 12px 28px rgba(0,0,0,.45);
  --sh-hi:0 0 0 1px rgba(255,106,26,.45),0 0 22px rgba(255,106,26,.18);
  --container:1200px;--sec:96px;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font);font-size:16px;line-height:1.9;letter-spacing:.01em;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:var(--c-text);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:#fff;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;}
.section-head p{margin:10px 0 0;color:var(--c-text-dim);font-size:14px;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:120;background:rgba(10,12,15,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,rgba(255,106,26,.6),rgba(31,224,164,.6));}
.nav-wrap{display:flex;align-items:center;gap:28px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--c-text);white-space:nowrap;}
.logo svg{flex:0 0 auto;}
.logo:hover{color:#fff;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{position:relative;font-size:15px;color:var(--c-text-dim);padding:8px 2px;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;box-shadow:0 0 12px rgba(255,106,26,.55);}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);opacity:.6;}
.nav-link.active{color:var(--c-primary);text-shadow:0 0 12px rgba(255,106,26,.55);}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:700;transition:transform .16s ease,background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease;}
.btn-primary{background:var(--c-primary);color:#0A0C0F;}
.btn-primary:hover{background:var(--c-primary-hi);color:#0A0C0F;transform:translateY(-1px);box-shadow:var(--sh-hi);}
.btn-ghost{background:transparent;color:var(--c-text);border-color:rgba(255,255,255,.18);}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.hamburger{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:10px;color:var(--c-text);}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.drawer{position:fixed;top:0;right:0;width:min(320px,86vw);height:100%;z-index:200;background:var(--c-surface);border-left:1px solid var(--c-line);padding:22px;transform:translateX(102%);transition:transform .26s ease;display:flex;flex-direction:column;gap:18px;}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
.drawer .nav-link{display:block;font-size:16px;padding:12px 0;border-bottom:1px solid var(--c-line);}
.drawer .nav-link::after{display:none;}
.drawer-close{width:44px;height:44px;background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:10px;color:var(--c-text);font-size:18px;line-height:1;}
.drawer .btn{margin-top:auto;width:100%;}

/* ---------- breadcrumb ---------- */
.crumbs{padding:22px 0 0;font-size:14px;color:var(--c-text-dim);}
.crumbs .sep{margin:0 8px;opacity:.55;}
.crumbs .current{color:var(--c-text);}

/* ---------- article head ---------- */
.article-head{padding:20px 0 8px;}
.badge-cat{display:inline-flex;align-items:center;height:26px;padding:0 12px;border:1px solid rgba(255,106,26,.5);border-radius:999px;color:var(--c-primary);font-size:13px;font-weight:700;background:rgba(255,106,26,.08);}
.badge-cat.alt{border-color:rgba(31,224,164,.5);color:var(--c-accent);background:rgba(31,224,164,.08);}
.article-head h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:800;margin:16px 0 0;max-width:900px;}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px;font-size:13.5px;color:var(--c-text-dim);font-variant-numeric:tabular-nums;}
.meta-row strong{color:var(--c-text);font-weight:700;}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:34px 0 var(--sec);align-items:start;}
.article-body{max-width:820px;font-size:17px;line-height:1.95;color:#DCE3EA;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{position:relative;margin:40px 0 16px;padding-left:16px;font-size:clamp(21px,2.8vw,30px);line-height:1.35;color:var(--c-text);}
.article-body h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 14px rgba(255,106,26,.45);}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;color:var(--c-text);}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--c-text);}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.4em;line-height:2;}
.article-body li::marker{color:var(--c-primary);}
.article-body blockquote{margin:24px 0;padding:18px 20px;background:var(--c-surface);border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;color:var(--c-text-dim);}
.article-body a{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{margin-top:10px;font-size:12.5px;color:var(--c-text-dim);text-align:center;}
.article-body table{display:block;width:100%;overflow-x:auto;border:1px solid var(--c-line);border-radius:14px;border-collapse:collapse;font-size:15px;}
.article-body th{background:var(--c-surface-2);text-align:left;padding:12px 16px;font-weight:700;white-space:nowrap;}
.article-body td{padding:12px 16px;border-top:1px solid var(--c-line);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:34px 0;}
.article-body code{background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14.5px;}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:22px;}
.panel h3{font-size:16px;margin-bottom:14px;letter-spacing:.02em;}
.panel h3 span{display:inline-block;width:6px;height:6px;border-radius:2px;background:var(--c-accent);margin-right:8px;vertical-align:middle;}
.tip-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;}
.tip-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.8;color:var(--c-text-dim);}
.tip-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);}
.link-cards{display:flex;flex-direction:column;gap:12px;}
.link-card{display:flex;gap:12px;align-items:center;padding:10px;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface-2);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;}
.link-card:hover{transform:translateY(-3px);border-color:rgba(255,106,26,.45);box-shadow:var(--sh);}
.link-card img{width:64px;height:48px;object-fit:cover;border-radius:8px;flex:0 0 auto;}
.link-card b{display:block;font-size:14.5px;font-weight:700;line-height:1.5;}
.link-card small{display:block;font-size:12.5px;color:var(--c-text-dim);margin-top:2px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 12px;border:1px solid var(--c-line);border-radius:999px;font-size:13px;color:var(--c-text-dim);background:var(--c-surface-2);}
a.tag:hover{border-color:var(--c-accent);color:#fff;}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:820px;margin-top:44px;display:flex;flex-direction:column;gap:26px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding-top:22px;border-top:1px solid var(--c-line);}
.tag-row .label{font-size:13px;color:var(--c-text-dim);margin-right:4px;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.pager a{display:block;padding:16px 18px;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);transition:border-color .18s ease,transform .18s ease;}
.pager a:hover{border-color:rgba(31,224,164,.5);transform:translateY(-2px);}
.pager small{display:block;font-size:12.5px;color:var(--c-text-dim);margin-bottom:6px;}
.pager b{font-size:14.5px;font-weight:700;}
.pager .next{text-align:right;}
.back-row{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- CTA ---------- */
.cta-bar{background:linear-gradient(120deg,var(--c-surface) 0%,var(--c-surface-2) 100%);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;}
.cta-bar h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;}
.cta-bar p{margin:8px 0 0;color:var(--c-text-dim);font-size:14.5px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- empty ---------- */
.empty-state{border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--r-panel);padding:40px 26px;text-align:center;}
.empty-state svg{margin:0 auto 14px;display:block;}
.empty-state p{margin:0 0 18px;color:var(--c-text-dim);font-size:15px;}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--sec);border-top:1px solid var(--c-line);background:var(--c-surface);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;padding:54px 0 34px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{margin:0;font-size:14px;color:var(--c-text-dim);line-height:1.9;max-width:340px;}
.footer-col h4{font-size:14px;color:var(--c-text);margin-bottom:14px;letter-spacing:.04em;}
.footer-col a,.footer-col p{display:block;font-size:14px;color:var(--c-text-dim);margin:0 0 10px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid var(--c-line);padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:var(--c-text-dim);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-layout{gap:34px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:1fr;gap:36px;}
  .sidebar{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--sec:60px;}
  .container{padding:0 20px;}
  .main-nav{display:none;}
  .hamburger{display:inline-flex;}
  .nav-wrap{height:60px;gap:14px;}
  .nav-actions .btn-primary{display:none;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .pager{grid-template-columns:1fr;}
  .pager .next{text-align:left;}
  .cta-bar{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .article-head h1{font-size:clamp(24px,7vw,30px);}
}
@media (max-width:479px){
  .logo{font-size:15.5px;}
  .meta-row{gap:8px 16px;}
}

/* roulang page: category1 */
:root{
  --c-bg:#0A0C0F;
  --c-surface:#12161B;
  --c-surface-2:#1A2027;
  --c-primary:#FF6A1A;
  --c-primary-hi:#FF8A3D;
  --c-accent:#1FE0A4;
  --c-text:#EDF1F5;
  --c-text-dim:#97A2AE;
  --c-line:rgba(255,255,255,.09);
  --r-card:14px;
  --r-panel:20px;
  --r-btn:10px;
  --shadow:0 12px 28px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(255,106,26,.45),0 0 22px rgba(255,106,26,.18),0 12px 28px rgba(0,0,0,.45);
  --container:1200px;
  --gutter:32px;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font:inherit;color:inherit}
strong,b{font-weight:700}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.num{font-variant-numeric:tabular-nums;font-weight:700}
/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease}
.btn-primary{background:var(--c-primary);color:#0A0C0F}
.btn-primary:hover{background:var(--c-primary-hi);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,26,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--c-text);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;box-shadow:0 0 24px rgba(31,224,164,.16);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-accent);transition:color .16s ease}
.link-more:hover{color:#fff}
.link-more::after{content:"→";transition:transform .16s ease}
.link-more:hover::after{transform:translateX(3px)}
/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(10,12,15,.82);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,rgba(255,106,26,0) 0%,rgba(255,106,26,.6) 32%,rgba(31,224,164,.6) 68%,rgba(31,224,164,0) 100%)}
.nav-inner{max-width:var(--container);margin:0 auto;height:64px;padding:0 var(--gutter);display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--c-text)}
.brand-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(140deg,var(--c-primary),#C8450A);display:grid;place-items:center;box-shadow:0 0 18px rgba(255,106,26,.35);flex:none}
.brand-mark svg{width:17px;height:17px;fill:#0A0C0F}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:26px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:64px;font-size:15px;color:var(--c-text-dim);transition:color .18s ease}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:18px;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 10px rgba(255,106,26,.55);transition:right .2s ease}
.nav-link:hover{color:#fff}
.nav-link:hover::after{right:0}
.nav-link.active{color:var(--c-primary);text-shadow:0 0 12px rgba(255,106,26,.55)}
.nav-link.active::after{right:0}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;background:var(--c-surface-2);border:1px solid var(--c-line);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-scrim{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:65}
.nav-scrim.show{opacity:1;pointer-events:auto}
/* ---------- 页面头 ---------- */
.page-hero{position:relative;border-bottom:1px solid var(--c-line);background-image:linear-gradient(180deg,rgba(10,12,15,.84) 0%,rgba(10,12,15,.93) 100%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;background-repeat:no-repeat}
.page-hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;padding-top:68px;padding-bottom:76px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-dim);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{color:var(--c-text-dim);transition:color .16s ease}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{color:rgba(255,255,255,.28)}
.badge-cat{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--c-primary);border:1px solid rgba(255,106,26,.45);background:rgba(255,106,26,.08)}
.badge-cat.is-accent{color:var(--c-accent);border-color:rgba(31,224,164,.45);background:rgba(31,224,164,.08)}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:800;margin:18px 0 18px;max-width:20ch}
.lead{font-size:16.5px;line-height:1.9;color:var(--c-text-dim);max-width:36em;margin-bottom:28px}
.cta-row{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.chip{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;background:var(--c-surface-2);border:1px solid var(--c-line);font-size:14px;color:var(--c-text-dim)}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:block;flex:none}
.media-frame{border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--shadow);background:var(--c-surface)}
.media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}
/* ---------- 板块 ---------- */
.section{padding:var(--space-section) 0}
.section--alt{background:#0C0F13;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--c-accent);text-transform:uppercase;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-primary);display:block}
h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;font-weight:700}
.section-head p{margin-top:12px;font-size:15px;color:var(--c-text-dim);max-width:34em}
h3{font-size:19px;line-height:1.5;font-weight:700}
p{font-size:16px;line-height:1.9;color:var(--c-text-dim)}
/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:21px;top:14px;bottom:26px;width:2px;border-radius:2px;background:linear-gradient(180deg,rgba(255,106,26,.85),rgba(31,224,164,.55) 60%,rgba(31,224,164,.05))}
.step{position:relative;padding-left:70px;margin-bottom:26px}
.step:last-child{margin-bottom:0}
.step-num{position:absolute;left:0;top:2px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--c-surface-2);border:1px solid rgba(255,106,26,.5);color:var(--c-primary);font-size:15px;font-variant-numeric:tabular-nums;font-weight:700;box-shadow:0 0 18px rgba(255,106,26,.14)}
.step-body{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px 26px;transition:transform .18s ease,box-shadow .18s ease}
.step-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-body p{margin-top:10px;max-width:52em}
.step-tag{display:inline-block;margin-top:14px;font-size:13px;color:var(--c-accent);border-left:2px solid rgba(31,224,164,.6);padding-left:10px}
/* ---------- 卡片网格 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:transparent}
.card h3{margin-bottom:10px}
.card p{font-size:15px;max-width:44em}
.card-index{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(255,106,26,.12);color:var(--c-primary);font-size:14px;font-variant-numeric:tabular-nums;font-weight:700;margin-bottom:16px}
/* ---------- 提示条 ---------- */
.notice{display:flex;gap:18px;align-items:flex-start;background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);border-radius:var(--r-card);padding:24px 26px;margin-top:32px}
.notice-title{font-size:15px;font-weight:700;color:var(--c-text);white-space:nowrap}
.notice p{font-size:15px;margin:0;max-width:60em}
/* ---------- FAQ ---------- */
.faq-list{margin-top:8px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item:hover{border-color:rgba(255,255,255,.16)}
.faq-item[open]{box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:18px 24px;font-size:16px;font-weight:700}
.faq-item summary::-webkit-details-marker{display:none}
.plus{position:relative;width:18px;height:18px;flex:none}
.plus::before,.plus::after{content:"";position:absolute;background:var(--c-accent);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.plus::before{left:0;top:8px;width:18px;height:2px}
.plus::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .plus::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 24px 22px}
.faq-body p{border-left:2px solid rgba(31,224,164,.55);padding-left:16px;font-size:15.5px;margin:0}
/* ---------- CTA ---------- */
.cta-panel{background:linear-gradient(150deg,var(--c-surface-2) 0%,#0E1216 100%);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:48px;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;box-shadow:var(--shadow)}
.cta-panel h2{margin-bottom:14px}
.cta-panel p{max-width:42em}
.cta-panel .cta-row{justify-content:flex-end}
/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--c-line);background:#0C0F13;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:16px}
.footer-brand .brand-mark{width:28px;height:28px;border-radius:8px}
.footer-brand .brand-mark svg{width:15px;height:15px}
.footer-about{font-size:14px;line-height:1.85;color:var(--c-text-dim);max-width:30em}
.footer-title{font-size:15px;font-weight:700;color:var(--c-text);margin-bottom:16px}
.footer-list{display:grid;gap:11px}
.footer-list a,.footer-list li{font-size:14px;color:var(--c-text-dim)}
.footer-list a{transition:color .16s ease}
.footer-list a:hover{color:#fff}
.footer-bottom{border-top:1px solid var(--c-line);margin-top:44px;padding-top:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12px;color:var(--c-text-dim)}
/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--space-section:72px}
  .page-hero-inner{grid-template-columns:1fr;gap:34px;padding-top:52px;padding-bottom:60px}
  .media-frame{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-panel{grid-template-columns:1fr;padding:40px}
  .cta-panel .cta-row{justify-content:flex-start}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .main-nav{position:fixed;top:0;right:0;bottom:0;width:min(84vw,320px);margin-left:0;background:var(--c-surface);border-left:1px solid var(--c-line);flex-direction:column;align-items:stretch;gap:18px;padding:88px 24px 32px;transform:translateX(102%);transition:transform .28s ease;z-index:70;overflow-y:auto}
  .main-nav.open{transform:none}
  .nav-link{height:auto;padding:12px 0;font-size:16px;border-bottom:1px solid var(--c-line)}
  .nav-link::after{bottom:0}
  .main-nav .btn{margin-top:10px}
}
@media (max-width:768px){
  :root{--space-section:60px;--gutter:20px}
  body{font-size:15.5px;line-height:1.85}
  .nav-inner{height:60px;gap:14px}
  .brand{font-size:15.5px}
  .grid-2{grid-template-columns:1fr;gap:18px}
  .timeline::before{left:17px}
  .step{padding-left:56px}
  .step-num{width:36px;height:36px;font-size:14px}
  .step-body{padding:20px}
  .notice{flex-direction:column;gap:8px;padding:20px}
  .cta-panel{padding:32px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  h1{font-size:26px}
  .lead{font-size:15.5px}
  .btn{width:100%}
  .cta-row{flex-direction:column;align-items:stretch}
  .chip{font-size:13px;height:36px;padding:0 14px}
  .card,.step-body{padding:18px}
}

/* roulang page: category2 */
:root{
  --c-bg:#0A0C0F;--c-surface:#12161B;--c-surface-2:#1A2027;
  --c-primary:#FF6A1A;--c-primary-hi:#FF8A3D;--c-accent:#1FE0A4;
  --c-text:#EDF1F5;--c-text-dim:#97A2AE;--c-line:rgba(255,255,255,.09);
  --r-card:14px;--r-panel:20px;--r-btn:10px;--r-pill:999px;
  --sh:0 12px 28px rgba(0,0,0,.45);
  --sh-hover:0 0 0 1px rgba(255,106,26,.45),0 0 22px rgba(255,106,26,.18);
  --gap:24px;--sec:96px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font);font-size:16px;line-height:1.9;letter-spacing:.01em}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:#fff}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:rgba(255,106,26,.35)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-weight:700}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;z-index:99;background:var(--c-primary);color:#0A0C0F;padding:8px 14px;border-radius:var(--r-btn)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,12,15,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.site-header::after{content:"";display:block;height:1px;background:linear-gradient(90deg,rgba(255,106,26,.6),rgba(31,224,164,.6))}
.header-inner{height:64px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.brand-mark{width:26px;height:26px;flex:0 0 26px;border-radius:8px;background:linear-gradient(135deg,var(--c-primary),#ff9b53);display:grid;place-items:center}
.brand-mark svg{width:15px;height:15px}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:26px}
.nav-link{position:relative;font-size:15px;color:var(--c-text-dim);padding:20px 2px;transition:color .16s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1);background:var(--c-accent);box-shadow:0 0 12px rgba(31,224,164,.55)}
.nav-link.active{color:var(--c-primary);text-shadow:0 0 12px rgba(255,106,26,.55)}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(255,106,26,.55)}
.header-cta{margin-left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:700;transition:transform .16s ease,background .16s ease,border-color .16s ease,box-shadow .16s ease}
.btn-primary{background:var(--c-primary);color:#0A0C0F}
.btn-primary:hover{background:var(--c-primary-hi);color:#0A0C0F;transform:translateY(-1px);box-shadow:0 0 22px rgba(255,106,26,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid rgba(255,255,255,.18);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-accent);color:#fff;transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);align-items:center;justify-content:center;margin-left:auto}
.nav-toggle svg{width:20px;height:20px}
.nav-drawer{position:fixed;inset:64px 0 0 auto;width:min(320px,84vw);background:var(--c-surface);border-left:1px solid var(--c-line);padding:28px 24px;display:flex;flex-direction:column;gap:18px;transform:translateX(105%);transition:transform .24s ease;z-index:60;box-shadow:var(--sh)}
.nav-drawer a{font-size:17px;font-weight:600;padding:8px 0;border-bottom:1px solid var(--c-line)}
.nav-drawer .btn{margin-top:auto}
body.nav-open .nav-drawer{transform:translateX(0)}
body.nav-open{overflow:hidden}

/* ---------- page head ---------- */
.page-head{position:relative;padding:72px 0 56px;background:linear-gradient(rgba(10,12,15,.86),rgba(10,12,15,.96)),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--c-text-dim);margin-bottom:18px}
.crumb a:hover{color:#fff}
.crumb span{opacity:.55}
.head-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:800}
.head-lead{margin-top:18px;max-width:34em;color:var(--c-text-dim);font-size:16px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.head-media{border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh);aspect-ratio:16/9;background:var(--c-surface-2)}
.head-media img{width:100%;height:100%;object-fit:cover}
.head-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);background:var(--c-surface-2);border:1px solid var(--c-line);font-size:14px;color:var(--c-text-dim)}
.chip b{color:var(--c-accent);font-variant-numeric:tabular-nums}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(21px,2.8vw,30px);line-height:1.35;font-weight:700}
.section-head p{margin-top:12px;color:var(--c-text-dim);font-size:15px;max-width:36em}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--c-accent);margin-bottom:12px}

/* ---------- filter ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.pill{min-height:44px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text-dim);font-size:14px;font-weight:600;transition:all .16s ease}
.pill:hover{border-color:var(--c-accent);color:#fff}
.pill.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#0A0C0F}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.card-set{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card-set:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:transparent}
.card-cover{position:relative;aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card-set:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge-cat{align-self:flex-start;font-size:12px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,106,26,.55);color:var(--c-primary);margin-bottom:12px}
.badge-cat.alt{border-color:rgba(31,224,164,.5);color:var(--c-accent)}
.card-body h3{font-size:19px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--c-text-dim);border-top:1px solid var(--c-line);margin-top:20px}
.card-meta .read{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:700}
.card-meta .read svg{width:16px;height:16px;transition:transform .16s ease}
.card-set:hover .card-meta .read svg{transform:translateX(3px)}

/* ---------- notice ---------- */
.notice{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start}
.notice-bar{background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);border-radius:var(--r-card);padding:24px 26px}
.notice-bar h3{font-size:18px;font-weight:700}
.notice-bar p{margin-top:10px;color:var(--c-text-dim);font-size:15px}
.plain-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line)}
.plain-list li:last-child{border-bottom:0}
.plain-list .idx{font-variant-numeric:tabular-nums;font-weight:800;color:var(--c-primary);font-size:15px;flex:0 0 34px}
.plain-list h4{font-size:16px;font-weight:700}
.plain-list p{color:var(--c-text-dim);font-size:14px;margin-top:4px}

/* ---------- pagination ---------- */
.pager{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px}
.page-btn{min-width:44px;height:44px;padding:0 14px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text-dim);font-size:14px;font-weight:700;transition:all .16s ease}
.page-btn:hover{border-color:var(--c-accent);color:#fff}
.page-btn.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#0A0C0F}
.page-btn.is-disabled{opacity:.4;cursor:not-allowed}
.page-info{margin-left:auto;font-size:14px;color:var(--c-text-dim)}

/* ---------- faq ---------- */
.faq{max-width:900px}
.faq details{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden}
.faq details[open]{border-color:rgba(31,224,164,.35)}
.faq summary{list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:700;display:flex;align-items:center;gap:16px;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .sign{margin-left:auto;width:22px;height:22px;flex:0 0 22px;position:relative;transition:transform .18s ease}
.faq summary .sign::before,.faq summary .sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq summary .sign::before{left:0;top:10px;width:22px;height:2px}
.faq summary .sign::after{left:10px;top:0;width:2px;height:22px}
.faq details[open] summary .sign{transform:rotate(45deg)}
.faq .answer{padding:0 24px 22px 24px;border-left:2px solid var(--c-accent);margin-left:24px;color:var(--c-text-dim);font-size:15px}

/* ---------- cta ---------- */
.cta-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;box-shadow:var(--sh)}
.cta-panel h2{font-size:clamp(21px,2.6vw,28px);font-weight:700;line-height:1.4}
.cta-panel p{margin-top:12px;color:var(--c-text-dim);font-size:15px}
.sub-form{display:flex;gap:12px;flex-wrap:wrap}
.sub-form input{flex:1 1 240px;height:48px;padding:0 16px;border-radius:var(--r-btn);background:var(--c-surface-2);border:1px solid var(--c-line);color:var(--c-text);transition:all .16s ease}
.sub-form input::placeholder{color:var(--c-text-dim)}
.sub-form input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,106,26,.15)}
.sub-form input.is-error{border-color:#ff5f5f;box-shadow:0 0 0 3px rgba(255,95,95,.14)}
.form-tip{font-size:12px;color:var(--c-text-dim);margin-top:10px}
.form-tip.error{color:#ff8a8a}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--c-line);margin-top:var(--sec);padding:56px 0 28px;background:var(--c-surface)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px}
.footer-brand .brand-mark{width:24px;height:24px;flex:0 0 24px}
.footer-about{margin-top:14px;color:var(--c-text-dim);font-size:14px;max-width:30em}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--c-text-dim)}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:var(--c-text-dim)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:var(--c-text-dim)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .head-grid,.notice,.cta-panel{grid-template-columns:1fr}
  .head-media{order:-1}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  :root{--sec:72px}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.85}
  .container{padding:0 20px}
  .header-inner{height:60px;gap:16px}
  .nav-drawer{inset:60px 0 0 auto}
  .page-head{padding:48px 0 40px}
  .section{padding:60px 0}
  .card-grid{grid-template-columns:1fr}
  .card-body h3{font-size:17px}
  .cta-panel{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .page-info{width:100%;margin-left:0}
}
@media (max-width:480px){
  .brand{font-size:15px}
  h1{font-size:26px}
  .head-actions .btn{width:100%}
}