/* roulang page: index */
:root{
  --bg-0:#0B0D12;
  --bg-1:#121722;
  --bg-2:#1A2130;
  --bg-3:#212A3B;
  --line:rgba(255,255,255,.08);
  --line-strong:#232B3D;
  --text-1:#F2F5FA;
  --text-2:#A9B4C7;
  --text-3:#6E7A90;
  --brand:#FF7A18;
  --brand-deep:#E85D04;
  --grad-cta:linear-gradient(96deg,#FF7A18,#FFB020);
  --accent:#2BD9C4;
  --hot:#F0468C;
  --paper:#F6F7FB;
  --paper-text:#1B2130;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --r-hero:20px;
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --sh-light:0 6px 18px rgba(16,24,40,.08);
  --container:1200px;
  --t:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--t);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,122,24,.25);border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--accent);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:block;border-radius:2px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:28px;letter-spacing:-.01em;}
.sec-head p{color:var(--text-2);font-size:14px;margin-top:8px;}
.sec-head .more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;}
.sec-head .more:hover{color:var(--brand);}
.sec-head .more svg{width:16px;height:16px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(11,13,18,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(10px);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(0,0,0,.45);background:rgba(11,13,18,.94);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--grad-cta);
  display:flex;align-items:center;justify-content:center;
  color:#181008;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-channels{display:flex;align-items:center;gap:28px;margin-left:12px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);
  padding:22px 0;display:inline-block;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:3px;border-radius:3px;
  background:var(--grad-cta);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search svg{position:absolute;left:14px;width:18px;height:18px;color:var(--text-3);pointer-events:none;}
.nav-search input{
  width:190px;height:40px;border-radius:var(--r-pill);
  background:var(--bg-2);border:1px solid var(--line);
  padding:0 16px 0 40px;font-size:14px;color:var(--text-1);
  transition:border-color var(--t),box-shadow var(--t),width var(--t);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.25);width:220px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn svg{width:16px;height:16px;}
.btn-primary{background:var(--grad-cta);color:#1A1008;box-shadow:0 6px 18px rgba(255,122,24,.28);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,122,24,.36);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-2);}
.btn-ghost:hover{color:var(--text-1);border-color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-dark{background:var(--paper-text);color:#fff;}
.btn-dark:hover{filter:brightness(1.1);transform:translateY(-1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;color:var(--text-1);
}
.nav-toggle svg{width:20px;height:20px;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:99;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;z-index:100;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s ease;
  padding:24px 20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head .brand-name{font-size:16px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:14px 12px;border-radius:var(--r-sm);font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--bg-2);color:var(--text-1);}
.drawer-nav a.is-active{background:var(--bg-2);color:var(--text-1);border-color:var(--line-strong);font-weight:600;}
.drawer-form{display:flex;flex-direction:column;gap:12px;}
.drawer-form input{
  height:48px;border-radius:var(--r-sm);background:var(--bg-2);
  border:1px solid var(--line);padding:0 16px;font-size:15px;
}
.drawer-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.25);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(11,13,18,.96) 0%,rgba(11,13,18,.78) 52%,rgba(11,13,18,.92) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;width:640px;height:640px;left:-160px;top:-220px;
  background:radial-gradient(circle,rgba(255,122,24,.22),rgba(255,122,24,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;padding:84px 0 88px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-copy h1{
  font-size:40px;line-height:1.28;font-weight:800;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-copy h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px;}
.hero-stats{
  display:flex;gap:0;border-top:1px solid var(--line);padding-top:24px;flex-wrap:wrap;
}
.hero-stats li{
  padding-right:36px;margin-right:36px;border-right:1px solid var(--line);
}
.hero-stats li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats strong{display:block;font-size:26px;font-weight:800;color:var(--text-1);letter-spacing:-.01em;}
.hero-stats span{font-size:13px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:var(--r-hero);overflow:hidden;
  border:1px solid var(--line-strong);
  background:linear-gradient(140deg,#1B2231,#0F141F);
  box-shadow:var(--sh-dark);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),calc(100% - 34px) 100%);
}
.hero-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:rgba(26,33,48,.92);border:1px solid var(--line-strong);
  border-radius:12px;padding:12px 16px;display:flex;align-items:center;gap:10px;
  box-shadow:var(--sh-dark);backdrop-filter:blur(6px);
}
.hero-float .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(43,217,196,.16);}
.hero-float span{font-size:13px;color:var(--text-2);}
.hero-float strong{font-size:13px;color:var(--text-1);}

/* ---------- quick entries ---------- */
.quick-strip{background:var(--bg-1);border-bottom:1px solid var(--line);padding:32px 0;}
.quick-scroll{
  display:flex;gap:14px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:thin;scrollbar-color:var(--bg-3) transparent;
}
.quick-scroll::-webkit-scrollbar{height:6px;}
.quick-scroll::-webkit-scrollbar-thumb{background:var(--bg-3);border-radius:99px;}
.quick-card{
  flex:0 0 156px;min-height:132px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 16px;display:flex;flex-direction:column;gap:10px;
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.quick-card:hover{transform:translateY(-2px);border-color:var(--brand);background:var(--bg-3);}
.quick-card .qi{
  width:36px;height:36px;border-radius:10px;background:rgba(255,122,24,.12);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.quick-card .qi svg{width:20px;height:20px;}
.quick-card b{font-size:15px;font-weight:600;}
.quick-card span{font-size:12px;color:var(--text-3);line-height:1.6;}

/* ---------- story ---------- */
.story-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.story-media{border-radius:var(--r-hero);overflow:hidden;border:1px solid var(--line-strong);background:var(--bg-2);}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.story-body h2{font-size:28px;margin-bottom:18px;}
.story-body p{color:var(--text-2);font-size:15px;margin-bottom:16px;max-width:640px;}
.story-points{margin-top:28px;display:flex;flex-direction:column;gap:18px;}
.story-points li{
  border-left:3px solid var(--brand);padding-left:16px;
}
.story-points b{display:block;font-size:15px;font-weight:600;margin-bottom:4px;}
.story-points span{font-size:14px;color:var(--text-3);}

/* ---------- featured ---------- */
.feat-grid{display:grid;grid-template-columns:7fr 5fr;grid-template-rows:auto auto;gap:24px;}
.feat-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.feat-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-dark);}
.feat-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.feat-card:hover img{transform:scale(1.03);}
.feat-main{grid-row:span 2;min-height:420px;display:block;}
.feat-main .feat-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,18,.05) 40%,rgba(11,13,18,.92) 100%);
}
.feat-main .feat-text{position:absolute;left:0;right:0;bottom:0;padding:28px;}
.feat-main .feat-text h3{font-size:22px;margin-bottom:10px;}
.feat-main .feat-text p{font-size:14px;color:var(--text-2);max-width:520px;}
.feat-side{display:flex;gap:16px;padding:16px;min-height:198px;align-items:center;}
.feat-side .thumb{flex:0 0 132px;border-radius:12px;overflow:hidden;background:var(--bg-3);}
.feat-side .thumb img{aspect-ratio:16/9;height:auto;width:100%;}
.feat-side h3{font-size:17px;margin-bottom:8px;}
.feat-side p{font-size:13px;color:var(--text-3);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:rgba(43,217,196,.12);color:var(--accent);}
.badge-hot{background:rgba(240,70,140,.14);color:var(--hot);}
.badge-brand{background:rgba(255,122,24,.14);color:var(--brand);}

/* ---------- posts (CMS) ---------- */
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.post-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform var(--t),border-color var(--t),background var(--t);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--brand);background:var(--bg-3);}
.post-link{display:flex;gap:16px;padding:16px;align-items:flex-start;}
.post-thumb{
  flex:0 0 148px;border-radius:12px;overflow:hidden;background:linear-gradient(140deg,#1B2231,#0F141F);
}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-body{min-width:0;flex:1;}
.post-meta-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap;}
.post-time{font-size:13px;color:var(--text-3);}
.post-title{
  font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-summary{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:var(--bg-1);text-align:center;
}
.empty-state svg{width:34px;height:34px;color:var(--text-3);}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.cat-card{
  border-radius:var(--r-card);padding:34px 32px;border:1px solid var(--line);
  display:flex;flex-direction:column;gap:14px;min-height:220px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  position:relative;overflow:hidden;
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-dark);}
.cat-card.dark{background:var(--bg-2);}
.cat-card.light{background:var(--bg-1);}
.cat-card .cat-top{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.cat-card h3{font-size:22px;}
.cat-card p{font-size:14px;color:var(--text-2);max-width:420px;}
.cat-card .cat-go{margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand);}
.cat-card .cat-go svg{width:16px;height:16px;transition:transform var(--t);}
.cat-card:hover .cat-go svg{transform:translateX(4px);}

/* ---------- trust ---------- */
.trust-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.trust-item{padding:32px 24px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;}
.trust-item .ti{color:var(--accent);margin-bottom:14px;}
.trust-item .ti svg{width:22px;height:22px;}
.trust-item b{display:block;font-size:16px;font-weight:600;margin-bottom:6px;}
.trust-item span{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 0;min-height:56px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color var(--t);
}
.faq-q:hover{color:var(--brand);}
.faq-q .plus{
  flex:0 0 22px;width:22px;height:22px;color:var(--brand);
  transition:transform var(--t);position:relative;
}
.faq-q .plus svg{width:22px;height:22px;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a p{font-size:15px;color:var(--text-2);padding:0 0 20px;max-width:820px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--paper);color:var(--paper-text);padding:56px 0;}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.cta-inner h2{font-size:26px;color:var(--paper-text);margin-bottom:10px;}
.cta-inner p{font-size:15px;color:#4A5568;}
.cta-form{display:flex;gap:12px;}
.cta-form input{
  flex:1;height:48px;border-radius:var(--r-sm);
  border:1px solid #D6DAE3;background:#fff;color:var(--paper-text);
  padding:0 16px;font-size:15px;
}
.cta-form input::placeholder{color:#8A93A6;}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.18);}
.cta-note{font-size:13px;color:#6B7280;margin-top:12px;grid-column:1/-1;}

/* ---------- footer ---------- */
.site-footer{background:#0B0D12;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:280px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-3);display:inline-block;transition:color var(--t),transform var(--t);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-sub p{font-size:14px;color:var(--text-3);margin-bottom:16px;}
.footer-sub form{display:flex;gap:10px;}
.footer-sub input{
  flex:1;height:44px;border-radius:var(--r-sm);background:var(--bg-2);
  border:1px solid var(--line);padding:0 14px;font-size:14px;color:var(--text-1);min-width:0;
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.25);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--text-1);
  display:flex;align-items:center;justify-content:center;z-index:80;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t),visibility var(--t),transform var(--t),border-color var(--t);
  box-shadow:var(--sh-dark);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--brand);color:var(--brand);}
.to-top svg{width:18px;height:18px;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-copy h1{font-size:34px;}
  .trust-row{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:991px){
  .nav-channels{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-ghost{display:none;}
  .section{padding:64px 0;}
  .hero-inner{padding:64px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure img{aspect-ratio:16/9;}
  .hero-float{left:12px;bottom:14px;}
  .story-grid{grid-template-columns:1fr;gap:32px;}
  .feat-grid{grid-template-columns:1fr;}
  .feat-main{min-height:320px;grid-row:auto;}
  .post-list{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:26px;}
  .sec-head h2{font-size:22px;}
  .hero-copy h1{font-size:28px;line-height:1.35;}
  .hero-sub{font-size:15px;}
  .hero-stats li{padding-right:22px;margin-right:22px;}
  .hero-stats strong{font-size:22px;}
  .cat-grid{grid-template-columns:1fr;}
  .cat-card{padding:26px 22px;}
  .trust-row{grid-template-columns:1fr;}
  .trust-item{border-right:0;border-bottom:1px solid var(--line);}
  .trust-item:last-child{border-bottom:0;}
  .feat-side{flex-direction:column;align-items:flex-start;}
  .feat-side .thumb{flex:none;width:100%;}
  .post-link{flex-direction:column;}
  .post-thumb{flex:none;width:100%;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .footer-sub form{flex-direction:column;}
  .footer-sub .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bg-0:#0B0D12;
  --bg-1:#121722;
  --bg-2:#1A2130;
  --bg-3:#212A3B;
  --line:rgba(255,255,255,.08);
  --line-2:#232B3D;
  --text-1:#F2F5FA;
  --text-2:#A9B4C7;
  --text-3:#6E7A90;
  --brand:#FF7A18;
  --brand-deep:#E85D04;
  --grad-cta:linear-gradient(96deg,#FF7A18,#FFB020);
  --accent:#2BD9C4;
  --hot:#F0468C;
  --paper:#F6F7FB;
  --paper-text:#1B2130;
  --radius:14px;
  --radius-sm:10px;
  --pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-paper:0 6px 18px rgba(16,24,40,.08);
  --tr:.2s ease;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,13,18,.84);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  transition:box-shadow var(--tr),background var(--tr);
}
.site-header.is-scrolled{background:rgba(11,13,18,.96);box-shadow:0 10px 28px rgba(0,0,0,.45);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--grad-cta);
  display:grid;place-items:center;
  color:#1A1206;
  box-shadow:0 4px 14px rgba(255,122,24,.3);
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-1);white-space:nowrap;}
.nav-channels{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:0 14px;
  line-height:68px;
  font-size:15px;
  color:var(--text-2);
  transition:color var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  background:var(--brand);border-radius:3px 3px 0 0;
  transform:scaleX(0);transform-origin:center;transition:transform var(--tr);
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
  border-radius:var(--pill);
  transition:border-color var(--tr),box-shadow var(--tr);
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:0 0 auto;}
.nav-search input{
  width:132px;border:0;background:transparent;color:var(--text-1);
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.25);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-sm);
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--text-1);cursor:pointer;place-items:center;
}
.nav-toggle svg{width:20px;height:20px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--pill);
  font-size:15px;font-weight:600;cursor:pointer;
  white-space:nowrap;text-decoration:none;
  transition:transform var(--tr),filter var(--tr),box-shadow var(--tr),border-color var(--tr),color var(--tr),background var(--tr);
}
.btn svg{width:16px;height:16px;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--grad-cta);color:#1A1206;box-shadow:0 6px 18px rgba(255,122,24,.25);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--line-2);color:var(--text-1);background:rgba(255,255,255,.02);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:60;
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;z-index:70;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .25s ease;
  padding:20px;display:flex;flex-direction:column;gap:16px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:36px;height:36px;border-radius:var(--radius-sm);
  border:1px solid var(--line-2);background:transparent;color:var(--text-1);
  cursor:pointer;display:grid;place-items:center;
}
.drawer-close svg{width:18px;height:18px;}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--text-1);padding:0 14px;outline:none;
}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 12px;
  border-radius:var(--radius-sm);font-size:15px;color:var(--text-2);
  transition:background var(--tr),color var(--tr);
}
.drawer-nav a:hover{background:var(--bg-3);color:var(--text-1);}
.drawer-nav a.is-active{background:rgba(255,122,24,.12);color:var(--brand);font-weight:600;}

/* ============ 面包屑 & 文章头 ============ */
.crumb-bar{padding:24px 0 0;}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;
  font-size:13px;color:var(--text-3);overflow-x:auto;white-space:nowrap;
  scrollbar-width:none;
}
.crumbs::-webkit-scrollbar{display:none;}
.crumbs a{color:var(--text-2);transition:color var(--tr);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);}
.crumbs .cur{color:var(--brand);}

.article-head{padding:20px 0 28px;border-bottom:1px solid var(--line);}
.article-head h1{
  font-size:40px;line-height:1.28;font-weight:800;letter-spacing:-.01em;
  max-width:900px;margin-top:14px;color:var(--text-1);
}
.meta-row{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:18px;font-size:13px;color:var(--text-3);}
.meta-row .item{display:inline-flex;align-items:center;gap:6px;}
.meta-row svg{width:14px;height:14px;color:var(--text-3);}

/* ============ 徽章 / 标签 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--pill);
  font-size:12px;font-weight:600;line-height:1;
}
.pill-cat{background:rgba(43,217,196,.14);color:var(--accent);}
.pill-brand{background:rgba(255,122,24,.14);color:var(--brand);}
.pill-hot{background:rgba(240,70,140,.14);color:var(--hot);}
.pill-neutral{background:rgba(255,255,255,.07);color:var(--text-2);}

/* ============ 文章主体网格 ============ */
.article-wrap{padding:32px 0 0;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;
  align-items:start;
}

/* ============ 阅读区 ============ */
.paper{
  background:var(--paper);
  color:var(--paper-text);
  border-radius:16px;
  padding:40px;
  box-shadow:var(--shadow-paper);
  max-width:840px;
}
.paper > *:first-child{margin-top:0;}
.paper > *:last-child{margin-bottom:0;}
.paper p{font-size:16px;line-height:1.9;margin:0 0 1.2em;color:#28303F;}
.paper h2{
  font-size:26px;line-height:1.42;font-weight:700;color:#111725;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
}
.paper h3{font-size:20px;line-height:1.5;font-weight:600;color:#111725;margin:28px 0 12px;}
.paper h4{font-size:17px;line-height:1.55;font-weight:600;color:#111725;margin:22px 0 10px;}
.paper ul{list-style:disc;padding-left:22px;margin:0 0 1.2em;}
.paper ol{list-style:decimal;padding-left:22px;margin:0 0 1.2em;}
.paper li{font-size:16px;line-height:1.85;margin:.5em 0;color:#28303F;}
.paper a{color:#C2410C;border-bottom:1px solid rgba(194,65,12,.3);transition:color var(--tr),border-color var(--tr);}
.paper a:hover{color:var(--brand-deep);border-bottom-color:var(--brand-deep);}
.paper img{width:auto;max-width:100%;height:auto;border-radius:12px;margin:24px auto;box-shadow:0 8px 22px rgba(16,24,40,.14);}
.paper figure{margin:24px 0;}
.paper figure img{margin:0 auto;}
.paper figcaption{font-size:13px;line-height:1.6;color:#6B7280;text-align:center;margin-top:10px;}
.paper blockquote{
  margin:24px 0;padding:14px 20px;
  border-left:4px solid var(--brand);
  background:rgba(255,122,24,.07);
  border-radius:0 10px 10px 0;
  color:#3A4256;
}
.paper blockquote p{color:#3A4256;margin-bottom:0;font-size:15.5px;}
.paper pre{
  background:#141A26;color:#E6EAF2;
  padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.paper code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;background:rgba(20,26,38,.08);
  padding:2px 6px;border-radius:6px;color:#28303F;
}
.paper pre code{background:none;padding:0;color:inherit;font-size:14px;}
.paper table{width:100%;border-collapse:collapse;font-size:15px;margin:0;}
.paper .table-scroll{overflow-x:auto;margin:24px 0;border-radius:10px;}
.paper th,.paper td{border:1px solid #DCE0EA;padding:10px 14px;text-align:left;color:#28303F;}
.paper thead th{background:#EEF1F7;font-weight:600;color:#111725;}
.paper tbody tr:nth-child(even){background:#F1F3F9;}
.paper hr{border:0;border-top:1px solid #DCE0EA;margin:32px 0;}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;padding:64px 24px;text-align:center;
}
.empty-state svg{width:52px;height:52px;color:#9AA4B8;}
.empty-state h2{font-size:20px;font-weight:700;color:#111725;margin:0;padding:0;border:0;}
.empty-state p{font-size:15px;color:#6B7280;margin:0;}
.empty-state .btn{
  background:var(--bg-2);color:var(--paper);border-color:transparent;
  box-shadow:0 6px 18px rgba(16,24,40,.18);
}
.empty-state .btn:hover{filter:brightness(1.1);transform:translateY(-1px);}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px;}
.side-card{
  background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;
}
.side-card h3{
  font-size:15px;font-weight:600;color:var(--text-1);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--brand);
}
.side-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);transition:transform var(--tr);}
.side-item:first-of-type{padding-top:0;}
.side-item:last-child{border-bottom:0;padding-bottom:0;}
.side-item:hover{transform:translateX(2px);}
.side-item img{width:78px;height:50px;object-fit:cover;border-radius:8px;flex:0 0 auto;background:var(--bg-3);}
.side-item .txt{min-width:0;}
.side-item .t{
  font-size:14px;line-height:1.55;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.side-item:hover .t{color:var(--brand);}
.side-item .d{font-size:12px;color:var(--text-3);margin-top:4px;}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:42px;padding:0 8px;font-size:14px;color:var(--text-2);
  border-radius:8px;transition:background var(--tr),color var(--tr);
}
.side-links a:hover{background:var(--bg-3);color:var(--brand);}
.side-links a svg{width:14px;height:14px;color:var(--text-3);}

/* ============ 文章底部 ============ */
.article-foot{margin-top:36px;}
.tag-group{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-group .label{font-size:13px;color:var(--text-3);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--pill);border:1px solid var(--line-2);
  font-size:13px;color:var(--text-2);transition:all var(--tr);
}
.tag:hover{border-color:var(--brand);color:var(--brand);}

.pager{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;margin-top:28px;
}
.pager a{
  display:block;padding:18px 20px;
  background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--radius);transition:all var(--tr);min-width:0;
}
.pager a:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.pager .k{font-size:12px;color:var(--text-3);letter-spacing:.04em;display:block;margin-bottom:6px;}
.pager .v{
  font-size:15px;line-height:1.55;color:var(--text-1);font-weight:500;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager .next{text-align:right;}

.block-title{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:16px;margin:48px 0 20px;
}
.block-title h2{font-size:22px;font-weight:700;color:var(--text-1);letter-spacing:-.01em;}
.block-title a{font-size:14px;color:var(--text-2);transition:color var(--tr);}
.block-title a:hover{color:var(--brand);}

/* ============ 推荐卡 ============ */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rec-card{
  display:block;background:var(--bg-1);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:all var(--tr);
}
.rec-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.rec-card .thumb{
  aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,#1A2130,#121722);
}
.rec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rec-card:hover .thumb img{transform:scale(1.05);}
.rec-card .body{padding:16px 18px 18px;}
.rec-card h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--text-1);}
.rec-card .desc{
  font-size:13.5px;line-height:1.7;color:var(--text-3);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ============ CTA 带 ============ */
.cta-band{
  margin-top:64px;
  background:var(--paper);color:var(--paper-text);
  border-radius:20px;padding:40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;
  background:radial-gradient(circle,rgba(255,122,24,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;line-height:1.4;font-weight:700;color:var(--paper-text);}
.cta-band p{font-size:15px;line-height:1.7;color:#4A5468;margin-top:10px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-actions .btn-dark{
  background:var(--bg-0);color:var(--text-1);border-color:transparent;
}
.cta-actions .btn-dark:hover{filter:brightness(1.2);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);margin-top:88px;padding-top:56px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.5fr;
  gap:40px;padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--tr),transform var(--tr);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-sub p{font-size:14px;line-height:1.7;color:var(--text-3);margin-bottom:14px;}
.footer-sub form{display:flex;gap:10px;}
.footer-sub input{
  flex:1;min-width:0;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  padding:0 14px;color:var(--text-1);outline:none;transition:border-color var(--tr),box-shadow var(--tr);
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.18);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding:20px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2);transition:color var(--tr);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:40;
  width:44px;height:44px;border-radius:50%;
  background:var(--bg-2);border:1px solid var(--line-2);
  color:var(--text-1);display:grid;place-items:center;cursor:pointer;
  opacity:0;visibility:hidden;transition:all var(--tr);
  box-shadow:var(--shadow);
}
.back-top svg{width:18px;height:18px;}
.back-top.is-show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--brand);color:#12140f;border-color:var(--brand);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
}
@media (max-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;top:auto;}
  .side-item img{width:96px;height:60px;}
  .rec-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:991px){
  .nav-channels,.nav-search{display:none;}
  .nav-toggle{display:grid;}
  .nav-wrap{height:64px;}
  .article-head h1{font-size:32px;}
  .paper{padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  body{font-size:15px;}
  .crumb-bar{padding-top:18px;}
  .article-head{padding:16px 0 22px;}
  .article-head h1{font-size:26px;line-height:1.35;}
  .meta-row{gap:12px;}
  .article-wrap{padding-top:24px;}
  .paper{padding:20px;border-radius:14px;}
  .paper p{font-size:15px;line-height:1.85;}
  .paper h2{font-size:21px;margin-top:32px;}
  .paper h3{font-size:18px;}
  .paper li{font-size:15px;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .pager .next{text-align:left;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:28px 22px;border-radius:16px;margin-top:48px;}
  .cta-band h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .block-title{flex-direction:column;align-items:flex-start;gap:6px;margin:40px 0 18px;}
  .site-footer{margin-top:56px;padding-top:40px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .back-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  .brand-name{font-size:16px;}
  .btn-sm{height:36px;padding:0 14px;font-size:13px;}
  .article-head h1{font-size:23px;}
  .footer-sub form{flex-direction:column;}
  .footer-sub form .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --bg-0:#0B0D12;
  --bg-1:#121722;
  --bg-2:#1A2130;
  --bg-3:#212A3B;
  --line:rgba(255,255,255,.08);
  --line-deep:#232B3D;
  --text-1:#F2F5FA;
  --text-2:#A9B4C7;
  --text-3:#6E7A90;
  --brand:#FF7A18;
  --brand-deep:#E85D04;
  --grad-cta:linear-gradient(96deg,#FF7A18,#FFB020);
  --accent:#2BD9C4;
  --hot:#F0468C;
  --paper:#F6F7FB;
  --paper-text:#1B2130;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-dark:0 8px 24px rgba(0,0,0,.35);
  --shadow-light:0 6px 18px rgba(16,24,40,.08);
  --w-container:1200px;
  --w-cat:1080px;
  --ease:.2s ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),transform var(--ease),opacity var(--ease);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,122,24,.25);border-radius:6px;}

.container{
  width:100%;
  max-width:var(--w-container);
  margin:0 auto;
  padding:0 24px;
}
.container-lg{
  width:100%;
  max-width:var(--w-cat);
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(11,13,18,.94);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(11,13,18,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--grad-cta);
  color:#161009;
  box-shadow:0 6px 16px rgba(255,122,24,.28);
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 13px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:12px;
  height:3px;
  border-radius:2px;
  background:var(--grad-cta);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text-1);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  width:220px;
  padding:0 14px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.nav-search svg{width:18px;height:18px;color:var(--text-3);flex-shrink:0;}
.nav-search input{
  width:100%;
  background:transparent;
  border:0;
  outline:none;
  font-size:14px;
  color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(255,122,24,.25);
  background:var(--bg-3);
}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--text-1);
}
.nav-toggle svg{width:20px;height:20px;}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:filter var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease),background var(--ease);
}
.btn svg{width:18px;height:18px;}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-primary{
  background:var(--grad-cta);
  color:#17110a;
  box-shadow:0 8px 20px rgba(255,122,24,.24);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,24,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:none;filter:brightness(.98);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.16);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-paper{
  background:var(--paper);
  color:var(--paper-text);
}
.btn-paper:hover{filter:brightness(.97);transform:translateY(-1px);}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:280px;
  height:100%;
  background:var(--bg-1);
  border-left:1px solid var(--line-deep);
  z-index:130;
  transform:translateX(100%);
  transition:transform .26s ease;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head span{font-size:15px;font-weight:700;}
.drawer-close{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  color:var(--text-2);
}
.drawer-close svg{width:18px;height:18px;}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
}
.drawer-search svg{width:18px;height:18px;color:var(--text-3);}
.drawer-search input{width:100%;background:transparent;border:0;outline:none;font-size:14px;}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  padding:14px 2px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  min-height:48px;
  display:flex;align-items:center;
}
.drawer-links a.is-active{color:var(--brand);font-weight:600;}
.drawer-links a:hover{color:var(--brand);padding-left:6px;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-actions .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(0,0,0,.6);
  z-index:120;
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:var(--bg-0);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  font-size:13px;
  color:var(--text-3);
  overflow-x:auto;
  white-space:nowrap;
  scrollbar-width:none;
}
.crumb::-webkit-scrollbar{display:none;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#3A4557;}
.crumb .current{color:var(--text-1);}

/* ============ 压缩 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(96deg,rgba(11,13,18,.96) 0%,rgba(11,13,18,.86) 42%,rgba(11,13,18,.66) 100%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  opacity:.9;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:460px;height:460px;
  background:radial-gradient(circle,rgba(255,122,24,.22) 0%,rgba(255,122,24,0) 68%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:54px 0 48px;
  max-width:760px;
}
.hero-tagline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(43,217,196,.12);
  color:var(--accent);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.hero-tagline svg{width:16px;height:16px;}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(28px,4.2vw,40px);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-sub{
  margin-top:14px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  max-width:620px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px 34px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.fact{display:flex;flex-direction:column;gap:2px;}
.fact b{
  font-size:20px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:-.01em;
}
.fact span{font-size:13px;color:var(--text-3);}

/* ============ 主体布局 ============ */
.main-section{padding:64px 0 72px;}
.layout-grid{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:32px;
  align-items:start;
}
.section-head{margin-bottom:24px;}
.section-head h2{
  font-size:26px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.35;
}
.section-head p{
  margin-top:8px;
  font-size:14.5px;
  color:var(--text-2);
  max-width:640px;
}
.section-head .kicker{
  display:inline-block;
  margin-bottom:10px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  letter-spacing:.04em;
}

/* 分组列表（2 列文本列表卡） */
.group-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.group-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.group-card:hover{
  border-color:var(--brand);
  transform:translateY(-2px);
  box-shadow:var(--shadow-dark);
  background:var(--bg-3);
}
.group-head{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.group-num{
  width:28px;height:28px;
  flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:rgba(255,122,24,.14);
  color:var(--brand);
  font-size:13px;
  font-weight:700;
}
.group-head h3{font-size:17px;font-weight:600;letter-spacing:-.005em;}
.group-desc{
  margin-top:12px;
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.7;
}
.group-list{margin-top:6px;}
.group-list li{border-bottom:1px solid var(--line);}
.group-list li:last-child{border-bottom:0;}
.group-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 2px;
  font-size:14.5px;
  color:var(--text-2);
  min-height:44px;
}
.group-list a .txt{flex:1;min-width:0;}
.group-list a .txt small{
  display:block;
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.6;
  margin-top:2px;
}
.group-list a svg{
  width:16px;height:16px;
  flex-shrink:0;
  color:var(--text-3);
  transition:transform var(--ease),color var(--ease);
}
.group-list a:hover{color:var(--brand);}
.group-list a:hover svg{color:var(--brand);transform:translateX(3px);}
.group-cover{
  margin-top:14px;
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#26304A,#151B28);
}
.group-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.group-card:hover .group-cover img{transform:scale(1.04);}

/* ============ 右侧信息栏 ============ */
.side-col{
  position:sticky;
  top:92px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.side-card{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
}
.side-card h3{
  font-size:15.5px;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:8px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-card h3 svg{width:18px;height:18px;color:var(--accent);}
.status-list{margin-top:6px;}
.status-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px dashed var(--line-deep);
}
.status-list li:last-child{border-bottom:0;}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  color:var(--accent);
  white-space:nowrap;
}
.status-pill::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(43,217,196,.16);
}
.side-note{
  margin-top:12px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.side-actions{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.side-actions .btn{width:100%;}
.side-cover{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/9;
  margin-top:14px;
  background:linear-gradient(135deg,#26304A,#151B28);
}
.side-cover img{width:100%;height:100%;object-fit:cover;}
.side-price{display:flex;flex-direction:column;gap:12px;margin-top:14px;}
.side-price .row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  font-size:13.5px;
  color:var(--text-2);
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.side-price .row:last-child{border-bottom:0;padding-bottom:0;}
.side-price .row b{font-size:15px;color:var(--text-1);font-weight:700;}

/* ============ FAQ ============ */
.faq-section{
  padding:0 0 72px;
}
.faq-list{
  margin-top:8px;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:56px;
  padding:16px 2px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);
  transition:transform var(--ease);
}
.faq-icon svg{width:18px;height:18px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 2px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:760px;
}

/* ============ 返回条 ============ */
.back-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
  padding:40px 0;
}
.back-band-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.back-band h2{font-size:22px;font-weight:700;letter-spacing:-.01em;}
.back-band p{margin-top:6px;font-size:14px;color:var(--text-2);}
.back-band-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:32px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
  letter-spacing:.01em;
}
.footer-col ul li{margin-bottom:2px;}
.footer-col ul a{
  display:inline-block;
  font-size:14px;
  color:var(--text-2);
  padding:5px 0;
}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-sub p{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
  margin-bottom:14px;
}
.footer-sub form{display:flex;gap:10px;}
.footer-sub input{
  flex:1;
  min-width:0;
  height:44px;
  padding:0 14px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--text-1);
  outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.footer-sub input::placeholder{color:var(--text-3);}
.footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.25);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* 返回顶部 */
#backTop{
  position:fixed;
  right:22px;
  bottom:26px;
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--bg-3);
  border:1px solid var(--line-deep);
  color:var(--text-1);
  box-shadow:var(--shadow-dark);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease),border-color var(--ease),color var(--ease);
  z-index:110;
}
#backTop svg{width:18px;height:18px;}
#backTop.is-show{opacity:1;visibility:visible;transform:translateY(0);}
#backTop:hover{border-color:var(--brand);color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .layout-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
}
@media (max-width:1099px){
  .nav-search{width:180px;}
}
@media (max-width:991px){
  .container,.container-lg{padding:0 20px;}
  .nav-channels{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{height:56px;gap:12px;}
  .site-header .nav-actions .btn-ghost{display:none;}
  .brand-name{font-size:16px;}
  .page-hero h1{font-size:30px;}
  .hero-inner{padding:44px 0 40px;}
  .main-section{padding:56px 0 60px;}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side-col{position:static;}
  .faq-section{padding-bottom:60px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.85;}
  .container,.container-lg{padding:0 16px;}
  .group-grid{grid-template-columns:minmax(0,1fr);}
  .page-hero h1{font-size:27px;line-height:1.32;}
  .hero-sub{font-size:15px;}
  .hero-inner{padding:38px 0 34px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .hero-facts{gap:14px 26px;padding-top:18px;margin-top:24px;}
  .fact b{font-size:18px;}
  .section-head h2{font-size:22px;}
  .main-section{padding:48px 0 52px;}
  .group-card{padding:18px;}
  .faq-q{font-size:15px;}
  .back-band{padding:32px 0;}
  .back-band h2{font-size:19px;}
  .back-band-actions{width:100%;}
  .back-band-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-sub form{flex-direction:column;}
  .footer-sub .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  #backTop{right:14px;bottom:18px;}
}
@media (max-width:480px){
  .nav-actions .btn-primary span.long{display:none;}
  .brand-name{font-size:15px;}
  .page-hero h1{font-size:24px;}
  .hero-tagline{font-size:12.5px;}
  .side-card{padding:16px;}
  .group-list a{font-size:14px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#0B0D12;
  --bg-1:#121722;
  --bg-2:#1A2130;
  --bg-3:#212A3B;
  --line:rgba(255,255,255,.08);
  --line-2:#232B3D;
  --text-1:#F2F5FA;
  --text-2:#A9B4C7;
  --text-3:#6E7A90;
  --brand:#FF7A18;
  --brand-deep:#E85D04;
  --grad-cta:linear-gradient(96deg,#FF7A18,#FFB020);
  --accent:#2BD9C4;
  --hot:#F0468C;
  --paper:#F6F7FB;
  --paper-text:#1B2130;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --sh-paper:0 6px 18px rgba(16,24,40,.08);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --t:.2s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t),transform var(--t),box-shadow var(--t)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,122,24,.25)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-narrow{width:100%;max-width:1080px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  height:68px;
  background:rgba(11,13,18,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background-color var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(0,0,0,.45);background:rgba(11,13,18,.94)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--grad-cta);
  color:#12131A;
  flex:none;
}
.brand-mark svg{width:20px;height:20px;stroke-width:1.8}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand:hover .brand-name{color:var(--brand)}

.nav-channels{display:flex;align-items:center;gap:2px;flex:1 1 auto;min-width:0;height:68px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:68px;padding:0 14px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.is-active{color:var(--text-1);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  background:var(--brand);border-radius:3px 3px 0 0;
}

.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:210px;height:38px;padding:0 14px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.nav-search svg{width:18px;height:18px;color:var(--text-3);flex:none}
.nav-search input{
  width:100%;border:0;background:none;outline:none;
  font-size:14px;color:var(--text-1);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.18);background:var(--bg-3)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:all var(--t);
}
.btn svg{width:18px;height:18px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--grad-cta);color:#15161C;box-shadow:0 4px 14px rgba(255,122,24,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 8px 20px rgba(255,122,24,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:var(--paper);color:var(--paper-text);border-color:transparent}
.btn-light:hover{filter:brightness(1.03);transform:translateY(-1px);box-shadow:var(--sh-paper)}
.btn-outline-dark{background:transparent;color:var(--paper-text);border-color:rgba(27,33,48,.25)}
.btn-outline-dark:hover{border-color:var(--brand-deep);color:var(--brand-deep)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);color:var(--text-1);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.nav-drawer{
  position:fixed;top:0;right:0;z-index:120;
  width:288px;height:100%;
  background:var(--bg-1);
  border-left:1px solid var(--line);
  padding:24px 20px;
  transform:translateX(100%);
  transition:transform .26s ease;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-mask{
  position:fixed;inset:0;z-index:110;
  background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.nav-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line-2);display:grid;place-items:center}
.drawer-close svg{width:18px;height:18px}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--bg-2);color:var(--text-1)}
.drawer-nav a.is-active{background:var(--bg-2);color:var(--text-1);font-weight:600;border-color:var(--line-2)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:14px}
.drawer-search svg{width:18px;height:18px;color:var(--text-3)}
.drawer-search input{width:100%;border:0;background:none;outline:none;font-size:14px}
.drawer-actions{display:flex;flex-direction:column;gap:10px}
.drawer-actions .btn{width:100%}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;padding:18px 0 0;font-size:13px;color:var(--text-3);overflow-x:auto;white-space:nowrap}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--text-2)}

/* ============ 压缩 Hero ============ */
.hero-compact{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  margin-top:0;
}
.hero-compact::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(11,13,18,.97) 0%,rgba(11,13,18,.88) 42%,rgba(11,13,18,.52) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.hero-compact::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(255,122,24,.24),transparent 65%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.45fr 1fr;gap:40px;align-items:center;padding:52px 0 56px}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(43,217,196,.12);color:var(--accent);
  border:1px solid rgba(43,217,196,.28);
  font-size:13px;font-weight:600;margin-bottom:16px;
}
.hero-pill svg{width:15px;height:15px}
.hero-compact h1{font-size:38px;font-weight:800;line-height:1.26;margin-bottom:14px}
.hero-compact h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:16px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-side{
  background:rgba(18,23,34,.78);
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  padding:20px 22px;
  backdrop-filter:blur(6px);
}
.hero-side h3{font-size:15px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.hero-side h3 svg{width:18px;height:18px;color:var(--brand)}
.hero-stats{display:flex;flex-direction:column;gap:12px}
.hero-stat{display:flex;align-items:baseline;gap:10px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.hero-stat:last-child{border-bottom:0;padding-bottom:0}
.hero-stat b{font-size:22px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.hero-stat span{font-size:14px;color:var(--text-2)}

/* ============ 通栏快讯条 ============ */
.ticker{border-bottom:1px solid var(--line);background:var(--bg-1)}
.ticker-inner{display:flex;align-items:stretch;gap:0;overflow-x:auto}
.ticker-item{
  flex:1 1 0;min-width:230px;
  display:flex;align-items:center;gap:10px;
  padding:16px 20px;
  border-right:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.ticker-item:last-child{border-right:0}
.ticker-item:hover{background:var(--bg-2);color:var(--text-1)}
.ticker-item .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:28px;font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand)}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px;padding-left:16px}
.section-head .head-link{font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:6px;flex:none}
.section-head .head-link svg{width:16px;height:16px}
.section-head .head-link:hover{color:var(--brand)}

/* ============ 3 列网格卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:block;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:all var(--t);
}
.card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-dark)}
.card-media{
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#1A2130,#232B3D);
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px}
.card-body h3{font-size:18px;font-weight:600;margin:12px 0 8px}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.card-foot .meta{font-size:13px;color:var(--text-3)}
.card-foot .arrow{width:30px;height:30px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--text-3)}
.card-foot .arrow svg{width:15px;height:15px}
.card:hover .card-foot .arrow{border-color:var(--brand);color:var(--brand);background:rgba(255,122,24,.1)}

.pill{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.pill-accent{background:rgba(43,217,196,.13);color:var(--accent)}
.pill-brand{background:rgba(255,122,24,.14);color:var(--brand)}
.pill-hot{background:rgba(240,70,140,.14);color:var(--hot)}
.pill-mute{background:rgba(169,180,199,.12);color:var(--text-2)}

/* ============ 四步流程 ============ */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  transition:all var(--t);
}
.step:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-dark)}
.step-num{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  font-size:16px;font-weight:800;color:#15161C;
  background:var(--grad-cta);
  margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.72}
.step-line{position:absolute;top:44px;right:-24px;width:24px;height:2px;background:var(--line-2)}
.step:last-child .step-line{display:none}

/* ============ 覆盖范围 ============ */
.scope{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--line-2);
  font-size:14px;color:var(--text-2);transition:all var(--t);
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,122,24,.07)}
.scope-list{display:flex;flex-direction:column;gap:0}
.scope-item{padding:20px 0 20px 18px;border-left:2px solid var(--brand);border-bottom:1px solid var(--line)}
.scope-item:last-child{border-bottom:0}
.scope-item h4{font-size:16px;font-weight:600;margin-bottom:6px}
.scope-item p{font-size:14px;color:var(--text-2);line-height:1.75}
.scope-aside{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
}
.scope-aside h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.scope-aside h3 svg{width:18px;height:18px;color:var(--accent)}
.scope-aside ul{display:flex;flex-direction:column;gap:12px}
.scope-aside li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.scope-aside li svg{width:16px;height:16px;color:var(--accent);flex:none;margin-top:5px}

/* ============ FAQ ============ */
.faq{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:18px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  width:26px;height:26px;flex:none;border-radius:50%;
  border:1px solid var(--line-2);display:grid;place-items:center;
  transition:transform .22s ease,color var(--t),border-color var(--t);
}
.faq-icon svg{width:14px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand);border-color:var(--brand)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.85;padding:0 46px 22px 4px}
.faq-item.is-open .faq-a{max-height:320px}

/* ============ CTA 带 ============ */
.cta-band{background:var(--paper);color:var(--paper-text)}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:56px 0;
  position:relative;
}
.cta-inner::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:5px;
  background:var(--grad-cta);border-radius:0 4px 4px 0;
}
.cta-text h2{font-size:28px;font-weight:700;color:var(--paper-text);margin-bottom:10px}
.cta-text p{font-size:15px;color:#4B5567;max-width:520px}
.cta-form{display:flex;gap:12px;align-items:center;flex:none}
.cta-form input{
  height:48px;width:280px;padding:0 16px;
  background:#fff;border:1px solid #D8DCE6;border-radius:var(--r-sm);
  font-size:15px;color:var(--paper-text);outline:none;
  transition:border-color var(--t),box-shadow var(--t);
}
.cta-form input::placeholder{color:#9AA3B4}
.cta-form input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.18)}
.cta-form .btn{height:48px}

/* ============ 返回入口 ============ */
.back-home{display:flex;justify-content:center;padding:0 0 8px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:300px;line-height:1.75}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-sub p{font-size:14px;color:var(--text-3);margin-bottom:14px;line-height:1.7}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:14px;color:var(--text-1);outline:none;transition:border-color var(--t),box-shadow var(--t);
}
.footer-sub input::placeholder{color:var(--text-3)}
.footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.16)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:48px;padding:20px 0;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 返回顶部 ============ */
#backTopLink{
  position:fixed;right:24px;bottom:28px;z-index:90;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--bg-2);border:1px solid var(--line-2);color:var(--text-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all var(--t);
  text-indent:-9999px;
}
#backTopLink::after{
  content:"";width:10px;height:10px;border-left:2px solid currentColor;border-top:2px solid currentColor;
  transform:rotate(45deg);margin-top:4px;
}
#backTopLink.is-show{opacity:1;visibility:visible;transform:translateY(0)}
#backTopLink:hover{border-color:var(--brand);color:var(--brand)}

/* ============ 移动底栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  height:56px;padding:0 14px;gap:10px;
  background:rgba(11,13,18,.95);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  align-items:center;
}
.mobile-bar .mb-search{
  flex:1;display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:14px;color:var(--text-3);
}
.mobile-bar .mb-search svg{width:17px;height:17px;flex:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step-line{display:none}
  .scope{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .nav-channels{display:none}
  .nav-search{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:40px 0 44px}
  .hero-compact h1{font-size:30px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:44px 0}
  .cta-form{width:100%}
  .cta-form input{width:100%;flex:1}
}
@media (max-width:767px){
  body{padding-bottom:64px}
  .container,.container-narrow{padding:0 18px}
  .site-header,.nav-wrap{height:56px}
  .nav-link{height:56px}
  .section{padding:56px 0}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero-compact h1{font-size:27px}
  .hero-sub{font-size:15px}
  .section-head h2{font-size:22px}
  .cta-text h2{font-size:22px}
  .cta-form{flex-direction:column;align-items:stretch}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-sub form{flex-direction:column}
  .footer-sub .btn{width:100%}
  .mobile-bar{display:flex}
  #backTopLink{bottom:74px;right:16px}
  .ticker-item{min-width:200px;flex:none}
}
@media (max-width:480px){
  .hero-btns .btn{flex:1}
  .brand-name{font-size:16px}
}