/* roulang page: index */
:root{
  --primary:#1F6F63;
  --primary-dark:#14524A;
  --primary-light:#E6F1EE;
  --accent:#E8763A;
  --accent-hover:#D0652C;
  --accent-light:#FDEDE3;
  --ink:#0D1B18;
  --ink-soft:#142723;
  --sand:#F6EFE6;
  --paper:#FFFDF9;
  --white:#FFFFFF;
  --text:#1B2422;
  --text-2:#5A6A66;
  --text-3:#8B9691;
  --border:#E3DED4;
  --divider:#EDE7DC;
  --r-lg:16px;
  --r-md:12px;
  --r-img:14px;
  --r-badge:6px;
  --sh-sm:0 2px 8px rgba(13,27,24,.06);
  --sh-md:0 10px 28px rgba(13,27,24,.10);
  --sh-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  line-height:1.3;
  letter-spacing:.02em;
  margin:0;
  font-weight:700;
  color:inherit;
}
h1{font-size:clamp(30px,4vw,46px);}
h2{font-size:clamp(24px,2.6vw,32px);}
h3{font-size:22px;}
p{margin:0;}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.dark{background:var(--ink);color:#fff;}
.dark h1,.dark h2,.dark h3,.dark h4{color:#fff;}
.sand{background:var(--sand);}
.paper{background:var(--paper);}
.grid-x.row{margin-left:-12px;margin-right:-12px;}
.grid-x.row>.cell{padding-left:12px;padding-right:12px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;}
.sec-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.dark .sec-head p{color:rgba(255,255,255,.7);}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.12em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  border-radius:var(--r-badge);padding:5px 10px;margin-bottom:14px;
}
.dark .eyebrow{background:rgba(31,111,99,.35);color:#9FD6C9;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:999px;
  padding:14px 28px;border:1.5px solid transparent;
  transition:transform .28s var(--ease),background .28s var(--ease),box-shadow .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(232,118,58,.28);}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(232,118,58,.36);}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);}
.arrow-link::after{content:"→";transition:transform .28s var(--ease);}
.arrow-link:hover{color:var(--accent);}
.arrow-link:hover::after{transform:translateX(4px);}
.dark .arrow-link{color:#8FD3C4;}
.dark .arrow-link:hover{color:var(--accent);}

/* ---------- badges ---------- */
.badge{display:inline-block;font-size:13px;font-weight:600;border-radius:var(--r-badge);padding:4px 9px;line-height:1.4;}
.badge-platform{background:var(--primary-light);color:var(--primary-dark);}
.badge-version{background:var(--sand);color:var(--text-2);}
.badge-cat{background:var(--accent-light);color:var(--accent-hover);}
.dark .badge-platform{background:rgba(31,111,99,.45);color:#A9DED2;}
.dark .badge-version{background:rgba(255,255,255,.12);color:rgba(255,255,255,.8);}

/* ---------- header ---------- */
.site-header{position:fixed;top:20px;left:0;right:0;z-index:80;padding:0 16px;}
.cap-nav{
  max-width:1200px;margin:0 auto;height:64px;border-radius:999px;
  display:flex;align-items:center;gap:18px;padding:0 10px 0 18px;
  background:rgba(13,27,24,.52);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.10);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.scrolled .cap-nav{
  background:rgba(11,23,20,.9);
  border-color:rgba(255,255,255,.16);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand:hover{color:#fff;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--primary) 0%,var(--accent) 100%);
  color:#fff;font-family:var(--font-serif);font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:15px;letter-spacing:.02em;white-space:nowrap;}
.brand-text em{font-style:normal;color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:block;padding:8px 12px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:rgba(255,255,255,.78);white-space:nowrap;
  transition:color .26s var(--ease),background .26s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--accent);transform:translateX(-50%);transition:width .28s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{width:22px;}
.nav-cta{flex-shrink:0;padding:11px 20px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:50%;flex-shrink:0;margin-left:auto;
  border:1px solid rgba(255,255,255,.18);align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease);}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;max-width:1200px;margin:12px auto 0;border-radius:20px;padding:18px;
  background:rgba(11,23,20,.96);border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{display:block;padding:13px 12px;border-radius:12px;color:rgba(255,255,255,.85);font-size:16px;border-bottom:1px solid rgba(255,255,255,.07);}
.mobile-drawer a:last-of-type{border-bottom:0;}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(31,111,99,.35);color:#fff;}
.mobile-drawer .btn{width:100%;margin-top:14px;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);display:flex;align-items:center;min-height:clamp(560px,78vh,820px);padding:130px 0 80px;}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.5;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,27,24,.95) 0%,rgba(13,27,24,.88) 38%,rgba(13,27,24,.46) 74%,rgba(13,27,24,.18) 100%);
}
.hero-grain{
  position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:5px 5px;
}
.hero-arc{position:absolute;right:-6%;top:6%;width:520px;opacity:.08;pointer-events:none;}
.hero-inner{position:relative;z-index:2;width:100%;}
.hero-copy{max-width:660px;}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.1em;font-weight:600;color:#9FD6C9;background:rgba(31,111,99,.32);border:1px solid rgba(159,214,201,.25);border-radius:999px;padding:6px 14px;margin-bottom:20px;}
.hero-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{color:#fff;max-width:640px;}
.hero-sub{margin-top:16px;font-size:17px;color:rgba(255,255,255,.78);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-platforms{margin-top:40px;}
.hero-platforms .label{display:block;font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.52);margin-bottom:12px;}
.hero-platforms ul{display:flex;flex-wrap:wrap;gap:10px;}
.hero-platforms li{
  font-size:13.5px;color:rgba(255,255,255,.86);padding:7px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);
  transition:border-color .26s var(--ease),background .26s var(--ease),transform .26s var(--ease);
}
.hero-platforms li:hover{border-color:rgba(232,118,58,.6);background:rgba(232,118,58,.14);transform:translateY(-2px);}
.hero-cover{
  position:absolute;right:0;bottom:-10px;width:290px;transform:rotate(4deg);
  border-radius:20px;overflow:hidden;box-shadow:var(--sh-lg);
  border:1px solid rgba(255,255,255,.14);
}
.hero-cover img{width:100%;height:400px;object-fit:cover;}
.hero-cover figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px;background:linear-gradient(180deg,rgba(13,27,24,0) 0%,rgba(13,27,24,.92) 70%);color:#fff;font-size:14px;font-weight:600;}

/* ---------- version rail ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 264px;scroll-snap-align:start;border-radius:var(--r-lg);overflow:hidden;position:relative;
  background:var(--ink-soft);border:1px solid rgba(255,255,255,.09);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rail-card img{width:100%;height:340px;object-fit:cover;transition:transform .3s var(--ease);}
.rail-card:hover{transform:translateY(-6px);box-shadow:var(--sh-lg);border-color:rgba(232,118,58,.4);}
.rail-card:hover img{transform:scale(1.04);}
.rail-card .meta{
  position:absolute;left:0;right:0;bottom:0;padding:16px;
  background:linear-gradient(180deg,rgba(13,27,24,0) 0%,rgba(13,27,24,.94) 62%);
}
.rail-card .meta h3{font-size:17px;color:#fff;margin-bottom:8px;}
.rail-card .meta .tags{display:flex;flex-wrap:wrap;gap:6px;}

/* ---------- hot list ---------- */
.hot-panel{
  background:var(--ink-soft);border:1px solid rgba(255,255,255,.08);
  border-radius:20px;padding:26px 26px 18px;height:100%;
}
.hot-panel h3{font-size:19px;margin-bottom:18px;display:flex;align-items:center;justify-content:space-between;}
.hot-item{
  display:flex;gap:18px;align-items:flex-start;padding:16px 0;
  border-top:1px solid rgba(255,255,255,.08);position:relative;
  transition:padding-left .3s var(--ease),background .3s var(--ease);
}
.hot-item:first-of-type{border-top:0;}
.hot-item:hover{padding-left:10px;}
.hot-thumb{width:160px;height:100px;flex:0 0 160px;border-radius:var(--r-img);overflow:hidden;position:relative;}
.hot-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.hot-item:hover .hot-thumb img{transform:scale(1.05);}
.hot-num{
  position:absolute;left:8px;bottom:2px;font-family:var(--font-serif);font-size:34px;font-weight:700;
  color:rgba(232,118,58,.55);line-height:1;text-shadow:0 2px 10px rgba(0,0,0,.5);
}
.hot-body h4{font-size:17px;color:#fff;margin-bottom:6px;}
.hot-body p{font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.7;}
.hot-body .tags{margin-top:10px;display:flex;gap:6px;flex-wrap:wrap;}
.rank-list li{
  display:flex;align-items:center;gap:10px;padding:11px 0;
  border-top:1px dashed rgba(255,255,255,.1);font-size:14.5px;
}
.rank-list li:first-child{border-top:0;}
.rank-list li .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px;}
.rank-list li .name{color:rgba(255,255,255,.86);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.rank-list li .ver{font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- playlists ---------- */
.playlist{padding:88px 0;}
.playlist.alt-a{background:var(--ink);color:#fff;}
.playlist.alt-b{background:var(--sand);color:var(--text);}
.playlist .row-inner{display:flex;align-items:center;gap:56px;}
.playlist.reverse .row-inner{flex-direction:row-reverse;}
.playlist .visual{flex:0 0 46%;}
.playlist .visual img{width:100%;height:320px;object-fit:cover;border-radius:20px;box-shadow:var(--sh-md);}
.playlist .body{flex:1;}
.playlist .body h3{font-size:26px;margin-bottom:14px;}
.playlist .body p{font-size:16px;color:var(--text-2);}
.playlist.alt-a .body p{color:rgba(255,255,255,.72);}
.playlist .points{margin:22px 0;display:grid;gap:12px;}
.playlist .points li{position:relative;padding-left:20px;font-size:15.5px;color:var(--text-2);}
.playlist.alt-a .points li{color:rgba(255,255,255,.78);}
.playlist .points li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--accent);
}

/* ---------- news ---------- */
.news-list{border-top:1px solid var(--border);}
.news-row{
  display:flex;gap:24px;align-items:center;padding:22px 20px 22px 16px;
  border-bottom:1px solid var(--divider);position:relative;
  transition:background .3s var(--ease),padding-left .3s var(--ease);
}
.news-row::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:0;border-radius:4px;
  background:var(--primary);transition:width .3s var(--ease);
}
.news-row:hover{background:var(--sand);padding-left:26px;}
.news-row:hover::before{width:4px;}
.news-thumb{flex:0 0 132px;width:132px;height:88px;border-radius:var(--r-img);overflow:hidden;background:var(--sand);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{flex:1;min-width:0;}
.news-body h3{font-size:18px;margin-bottom:6px;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--primary);}
.news-body p{font-size:14.5px;color:var(--text-2);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
.news-side{flex:0 0 130px;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:8px;}
.news-side time{font-size:13.5px;color:var(--text-3);}
.news-empty{
  border:1px dashed var(--border);border-radius:var(--r-lg);padding:52px 24px;text-align:center;background:var(--white);
}
.news-empty svg{width:44px;height:44px;margin:0 auto 14px;display:block;color:var(--text-3);}
.news-empty p{color:var(--text-2);margin-bottom:18px;}

/* ---------- stats / trust ---------- */
.stat-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px 22px;height:100%;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);}
.stat-card .num{font-family:var(--font-serif);font-size:34px;color:var(--primary);line-height:1.1;}
.stat-card .num small{font-size:16px;margin-left:4px;color:var(--text-2);}
.stat-card h4{font-size:16px;margin:10px 0 8px;}
.stat-card p{font-size:14.5px;color:var(--text-2);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.faq-item{
  background:var(--white);border:1px solid var(--border);border-radius:var(--r-img);
  padding:0 22px;position:relative;overflow:hidden;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:var(--primary);
  transition:width .3s var(--ease);
}
.faq-item[open]{box-shadow:var(--sh-sm);border-color:#D5CEC1;}
.faq-item[open]::before{width:3px;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 40px 20px 0;position:relative;
  font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--accent);line-height:1;
  transition:transform .3s var(--ease);
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 0 22px;font-size:15.5px;color:var(--text-2);}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);color:#fff;padding:88px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,111,99,.55) 0%,rgba(31,111,99,0) 70%);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto;}
.cta-inner h2{color:#fff;}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.75);font-size:16.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;}
.cta-note{margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.5);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text strong{font-size:15px;}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-family:var(--font-serif);}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{font-size:14.5px;color:rgba(255,255,255,.7);margin-bottom:11px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- sticky mobile bar ---------- */
.sticky-bar{
  display:none;position:fixed;left:12px;right:12px;bottom:12px;z-index:90;
  background:rgba(13,27,24,.96);border:1px solid rgba(255,255,255,.14);
  border-radius:16px;padding:12px 14px;align-items:center;gap:12px;
  box-shadow:0 14px 34px rgba(0,0,0,.35);
}
.sticky-bar .txt{flex:1;color:#fff;font-size:14px;font-weight:600;line-height:1.3;}
.sticky-bar .txt span{display:block;font-size:11.5px;font-weight:400;color:rgba(255,255,255,.6);}
.sticky-bar .btn{padding:10px 18px;font-size:13.5px;}
.sticky-close{width:30px;height:30px;border-radius:50%;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.7);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;flex-shrink:0;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .playlist{padding:64px 0;}
  .playlist .row-inner{gap:34px;}
  .hero-cover{width:230px;}
  .hero-cover img{height:320px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:860px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding:118px 0 64px;min-height:620px;}
  .hero-cover{display:none;}
  .hero-copy{max-width:100%;}
  .playlist .row-inner,.playlist.reverse .row-inner{flex-direction:column;gap:24px;}
  .playlist .visual{flex:1 1 auto;width:100%;}
  .playlist .visual img{height:240px;}
  .faq-grid{grid-template-columns:1fr;}
  .hot-thumb{flex-basis:120px;width:120px;height:78px;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .site-header{top:12px;padding:0 10px;}
  .cap-nav{height:56px;padding:0 8px 0 12px;gap:10px;}
  .brand-mark{width:32px;height:32px;font-size:16px;}
  .brand-text strong{font-size:13.5px;}
  .brand-text em{display:none;}
  .hero{padding:104px 0 56px;}
  .hero h1{font-size:30px;}
  .hero-actions .btn{width:100%;}
  .rail-card{flex:0 0 232px;}
  .rail-card img{height:296px;}
  .hot-panel{padding:20px 18px 12px;}
  .hot-item{flex-direction:column;gap:12px;}
  .hot-thumb{width:100%;flex:0 0 auto;height:160px;}
  .news-row{flex-wrap:wrap;gap:14px;padding:18px 12px;}
  .news-thumb{flex:0 0 96px;width:96px;height:66px;}
  .news-side{flex:1 1 100%;flex-direction:row;align-items:center;justify-content:space-between;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:60px 0;}
  .sticky-bar{display:flex;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: article */
:root{
  --p:#1F6F63;--p-d:#14524A;--p-s:#E6F1EE;
  --a:#E8763A;--a-h:#D0652C;--a-s:#FDEDE3;
  --bg-deep:#0D1B18;--bg-light:#F6EFE6;--bg-read:#FFFDF9;--card:#FFFFFF;
  --t1:#1B2422;--t2:#5A6A66;--t3:#8B9691;
  --bd:#E3DED4;--sep:#EDE7DC;
  --r-lg:16px;--r-md:12px;--r-img:14px;--r-badge:6px;--r-pill:999px;
  --sh-sm:0 2px 8px rgba(13,27,24,.06);
  --sh-md:0 10px 28px rgba(13,27,24,.10);
  --sh-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-t:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-b:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg-deep);color:var(--t1);
  font-family:var(--font-b);font-size:17px;line-height:1.9;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--p);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--a-h);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--font-t);color:var(--t1);letter-spacing:.02em;line-height:1.3;margin:0;}
p{margin:0 0 20px;}
ul,ol{margin:0 0 20px;padding-left:1.15em;}
:focus-visible{outline:2px solid var(--a);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border:1.5px solid transparent;
  transition:all .28s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--a);color:#fff;box-shadow:0 6px 18px rgba(232,118,58,.28);}
.btn-primary:hover{background:var(--a-h);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(232,118,58,.34);}
.btn-outline{background:transparent;border-color:var(--p);color:var(--p);}
.btn-outline:hover{background:var(--p-s);color:var(--p-d);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--p);font-weight:600;font-size:15px;}
.link-arrow i{transition:transform .26s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-badge);
  padding:4px 10px;font-size:13px;line-height:1.5;font-weight:500;
}
.badge-platform{background:var(--p-s);color:var(--p-d);}
.badge-version{background:#F1E9DC;color:#6B5B44;}
.badge-cat{background:var(--a-s);color:var(--a-h);}

/* ---------- 悬浮胶囊导航 ---------- */
.cap-nav{
  position:sticky;top:16px;z-index:200;
  width:min(1200px,calc(100% - 32px));margin:20px auto 0;
  display:flex;align-items:center;gap:22px;
  height:64px;padding:0 14px 0 20px;border-radius:var(--r-pill);
  background:rgba(13,27,24,.76);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-md);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.cap-nav.is-scrolled{background:rgba(9,20,18,.94);box-shadow:var(--sh-lg);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#1F6F63,#0D1B18);
  color:#fff;font-family:var(--font-t);font-size:18px;
  border:1px solid rgba(255,255,255,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:15px;font-weight:700;letter-spacing:.04em;}
.brand-text em{color:rgba(255,255,255,.62);font-size:11px;font-style:normal;letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto;padding:0;}
.nav-links a{
  display:block;padding:8px 14px;border-radius:var(--r-pill);
  color:rgba(255,255,255,.78);font-size:15px;transition:all .26s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.10);}
.nav-links a.active{color:#fff;background:rgba(31,111,99,.55);box-shadow:inset 0 -2px 0 var(--a);}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  background:transparent;padding:0 11px;
}
.nav-toggle span{display:block;height:2px;background:#fff;border-radius:2px;transition:.3s var(--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);}

/* ---------- 文章页首屏 ---------- */
.article-hero{
  position:relative;margin-top:-84px;padding:170px 0 84px;
  background:linear-gradient(90deg,rgba(13,27,24,.94) 0%,rgba(13,27,24,.72) 55%,rgba(13,27,24,.46) 100%),
             url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:80px;
  background:linear-gradient(180deg,rgba(13,27,24,0) 0%,var(--bg-light) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0 0 22px;padding:0;
  font-size:14px;color:rgba(255,255,255,.62);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--a);}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.35);}
.breadcrumb .now{color:rgba(255,255,255,.55);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);margin:0 0 18px;max-width:860px;
}
.hero-sub{color:rgba(255,255,255,.72);font-size:16px;margin:0 0 26px;max-width:660px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;font-size:14px;color:rgba(255,255,255,.68);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--a);}
.meta-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 阅读区 ---------- */
.read-section{background:var(--bg-light);padding:0 0 96px;}
.read-card{
  background:var(--bg-read);border:1px solid var(--bd);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);padding:44px 48px;max-width:860px;margin:0 auto;
}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:#26302E;word-break:break-word;}
.article-body>*:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:28px;margin:40px 0 20px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:1em;
  border-radius:3px;background:var(--p);
}
.article-body h3{font-size:22px;margin:32px 0 14px;color:var(--p-d);}
.article-body h4{font-size:19px;margin:26px 0 12px;}
.article-body p{margin:0 0 20px;}
.article-body ul,.article-body ol{padding-left:1.2em;margin:0 0 20px;}
.article-body li{margin-bottom:10px;line-height:1.8;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul>li{position:relative;padding-left:20px;}
.article-body ul>li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--p);
}
.article-body ol{list-style:decimal;}
.article-body ol>li::marker{color:var(--p);font-weight:700;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--bg-light);
  border-left:4px solid var(--a);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:24px auto;border-radius:var(--r-img);box-shadow:var(--sh-sm);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:14px;color:var(--t3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--bd);border-radius:var(--r-md);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--bd);padding:12px 14px;text-align:left;}
.article-body th{background:var(--bg-light);color:var(--p-d);font-weight:700;}
.article-body tr:nth-child(even) td{background:#FCFAF6;}
.article-body pre{
  background:#0F211E;color:#E7F1EE;padding:20px;border-radius:var(--r-md);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{
  font-family:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
  background:var(--p-s);color:var(--p-d);padding:2px 7px;border-radius:5px;font-size:14px;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body a{color:var(--p);border-bottom:1px solid rgba(31,111,99,.35);}
.article-body a:hover{color:var(--a-h);border-bottom-color:var(--a-h);}
.article-body hr{border:none;border-top:1px solid var(--sep);margin:32px 0;}

.post-tags{
  max-width:860px;margin:36px auto 0;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.post-tags .tag-label{font-size:14px;color:var(--t2);margin-right:4px;}

.empty-state{
  max-width:760px;margin:0 auto;text-align:center;padding:40px 20px;
}
.empty-state i{font-size:44px;color:var(--p);opacity:.5;}
.empty-state h2{font-size:24px;margin:18px 0 10px;}
.empty-state p{color:var(--t2);margin-bottom:24px;}

/* ---------- 相关推荐 ---------- */
.rec-section{background:var(--bg-read);padding:96px 0;border-top:1px solid var(--sep);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);}
.section-head p{color:var(--t2);font-size:15px;margin:8px 0 0;max-width:620px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--bd);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rec-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md);border-color:#CFC7B7;}
.rec-card figure{margin:0;overflow:hidden;}
.rec-card img{width:100%;height:172px;object-fit:cover;border-radius:0;transition:transform .35s var(--ease);}
.rec-card:hover img{transform:scale(1.04);}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:19px;line-height:1.45;}
.rec-body p{font-size:15px;color:var(--t2);margin:0;line-height:1.8;}
.rec-body .link-arrow{margin-top:auto;}
.back-row{text-align:center;margin-top:40px;}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-light);padding:96px 0;}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px;}
.faq-item{
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r-img);
  padding:0 22px;transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-sm);border-color:#CFC7B7;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 0;font-weight:600;font-size:16px;color:var(--t1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;line-height:1;color:var(--p);font-weight:400;flex:0 0 auto;
}
.faq-item[open]{border-left:3px solid var(--p);}
.faq-item[open] summary::after{content:"−";color:var(--a);}
.faq-item .faq-answer{padding:0 0 20px;color:var(--t2);font-size:15.5px;line-height:1.9;border-top:1px solid var(--sep);padding-top:16px;}
.faq-item .faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0D1B18 0%,#123A33 60%,#14524A 100%);
  padding:84px 0;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.14;
}
.cta-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.76);font-size:16px;margin-bottom:30px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.55);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A1614;color:rgba(255,255,255,.7);padding:72px 0 28px;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px 32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer p{margin:0;line-height:1.9;font-size:14.5px;color:rgba(255,255,255,.6);max-width:320px;}
.site-footer h4{color:#fff;font-size:16px;margin:0 0 16px;font-weight:700;}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;}
.footer-links li,.footer-contact li{margin-bottom:12px;font-size:14.5px;color:rgba(255,255,255,.6);}
.footer-links a{color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--a);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:300;
  background:rgba(10,22,20,.96);backdrop-filter:blur(10px);
  padding:12px 16px;gap:10px;align-items:center;border-top:1px solid rgba(255,255,255,.12);
}
.mobile-bar .btn{flex:1;}
.mobile-bar-close{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.24);
  background:transparent;color:#fff;font-size:18px;line-height:1;flex:0 0 auto;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(10,22,20,.97);border:1px solid rgba(255,255,255,.12);
    border-radius:20px;padding:14px;box-shadow:var(--sh-lg);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:12px 16px;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .rec-grid{grid-template-columns:repeat(2,1fr);}
}
@media screen and (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .cap-nav{height:56px;top:10px;padding:0 12px;}
  .article-hero{margin-top:-72px;padding:150px 0 64px;}
  .read-section{padding-bottom:64px;}
  .read-card{padding:28px 20px;border-radius:var(--r-md);}
  .article-body h2{font-size:23px;margin:32px 0 16px;}
  .article-body h3{font-size:20px;}
  .rec-section,.faq-section{padding:64px 0;}
  .cta-band{padding:64px 0;}
  .rec-grid{grid-template-columns:1fr;}
  .rec-card img{height:200px;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .mobile-bar{display:flex;}
  .site-footer{padding-bottom:96px;}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:14px;}
  .brand-text em{font-size:10px;letter-spacing:.1em;}
  .article-hero{padding:136px 0 56px;}
  .article-meta{font-size:13px;gap:10px 14px;}
  .breadcrumb .now{max-width:180px;}
  .read-card{padding:22px 16px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --primary:#1F6F63;
  --primary-dark:#14524A;
  --primary-light:#E6F1EE;
  --accent:#E8763A;
  --accent-dark:#D0652C;
  --accent-light:#FDEDE3;
  --ink:#0D1B18;
  --ink-deep:#0A1512;
  --sand:#F6EFE6;
  --paper:#FFFDF9;
  --card:#FFFFFF;
  --text:#1B2422;
  --text-2:#5A6A66;
  --text-3:#8B9691;
  --border:#E3DED4;
  --divider:#EDE7DC;
  --r-xl:28px;
  --r-lg:16px;
  --r-md:14px;
  --r-sm:12px;
  --r-xs:6px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(13,27,24,.06);
  --sh-md:0 10px 28px rgba(13,27,24,.10);
  --sh-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;line-height:1.3;letter-spacing:.02em;margin:0;color:var(--ink);}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
ul,ol{margin:0;padding:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  padding:18px 24px;
  transition:padding .28s var(--ease);
}
.site-header.is-scrolled{padding:10px 24px;}
.cap-nav{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  max-width:1200px;
  margin:0 auto;
  height:64px;
  padding:0 18px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(255,253,249,.86);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border:1px solid rgba(227,222,212,.85);
  box-shadow:var(--sh-md);
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled .cap-nav{
  background:rgba(255,253,249,.97);
  border-color:var(--border);
  box-shadow:0 8px 22px rgba(13,27,24,.13);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;
  border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  color:#fff;
  font-family:'Noto Serif SC','Songti SC',serif;
  font-size:19px;font-weight:700;line-height:1;
  box-shadow:0 6px 14px rgba(31,111,99,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.04em;color:currentColor;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--text-3);}
.nav-links{
  display:flex;align-items:center;gap:2px;
  list-style:none;
  margin:0 auto;
  padding:0;
}
.nav-links a{
  display:block;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:background .26s var(--ease),color .26s var(--ease),box-shadow .26s var(--ease);
}
.nav-links a:hover{background:var(--primary-light);color:var(--primary-dark);}
.nav-links a.active{
  background:var(--primary-light);
  color:var(--primary-dark);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--primary);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;
  font-size:15px;font-weight:600;
  line-height:1.4;
  border:none;cursor:pointer;
  text-align:center;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.btn-primary{
  background:var(--accent);
  color:#fff;
  border-radius:var(--r-pill);
  padding:12px 24px;
  box-shadow:0 8px 20px rgba(232,118,58,.28);
}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(232,118,58,.36);}
.btn-ghost{
  background:transparent;
  color:#fff;
  border:1.5px solid rgba(255,255,255,.6);
  border-radius:var(--r-pill);
  padding:11px 24px;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border:1.5px solid var(--primary);
  border-radius:var(--r-sm);
  padding:10px 20px;
}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px);}
.nav-cta{padding:10px 20px;font-size:14px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  background:transparent;
  border:1px solid var(--border);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;
  flex-shrink:0;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .26s var(--ease),opacity .26s var(--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);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  background:var(--ink);
  padding:64px 0 104px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.3;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,27,24,.96) 0%,rgba(13,27,24,.8) 46%,rgba(13,27,24,.42) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.55);
  margin-bottom:20px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  color:#fff;
  max-width:24ch;
}
.hero-lead{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.76);
  max-width:48ch;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.plat-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  letter-spacing:.02em;
  color:rgba(255,255,255,.88);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  transition:background .26s var(--ease),border-color .26s var(--ease);
}
.plat-badge:hover{background:rgba(232,118,58,.2);border-color:rgba(232,118,58,.5);}
.plat-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}

/* ---------- Main ---------- */
.page-main{
  position:relative;
  z-index:3;
  background:var(--sand);
  border-radius:32px 32px 0 0;
  margin-top:-32px;
  padding:64px 0 88px;
}
.layout-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.content-col{min-width:0;}
.content-block{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-sm);
  margin-bottom:28px;
  transition:box-shadow .28s var(--ease),transform .28s var(--ease);
}
.content-block:last-child{margin-bottom:0;}
.content-block:hover{box-shadow:var(--sh-md);}
.content-block h2{
  font-size:clamp(21px,2.2vw,27px);
  padding-left:16px;
  border-left:4px solid var(--primary);
  margin-bottom:18px;
}
.content-block h3{font-size:19px;margin:26px 0 12px;}
.content-block h3:first-child{margin-top:0;}
.content-block p{color:var(--text-2);}
.figure{margin:0 0 22px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--border);}
.figure img{width:100%;object-fit:cover;}
.figure figcaption{padding:10px 16px;font-size:14px;color:var(--text-3);background:var(--sand);text-align:center;}

.point-list{list-style:none;display:grid;gap:12px;margin:4px 0 0;}
.point-list li{position:relative;padding-left:22px;color:var(--text-2);line-height:1.85;}
.point-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.point-list strong{color:var(--ink);font-weight:600;}

.plat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-top:6px;}
.plat-card{
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:18px;
  background:var(--paper);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.plat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--primary-light);}
.plat-card h3{
  font-family:'Noto Sans SC','PingFang SC',sans-serif;
  font-size:16px;font-weight:700;color:var(--ink);
  margin:0 0 8px;
}
.plat-card p{font-size:14.5px;color:var(--text-2);margin:0 0 10px;line-height:1.75;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:var(--r-xs);
  font-size:13px;
  line-height:1.7;
  font-weight:500;
}
.tag-platform{background:var(--primary-light);color:var(--primary-dark);}
.tag-version{background:var(--sand);color:var(--text-2);border:1px solid var(--border);}
.tag-cat{background:var(--accent-light);color:var(--accent-dark);}

.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-sm);margin-top:6px;}
table.spec-table{width:100%;border-collapse:collapse;font-size:15px;min-width:540px;background:#fff;margin:0;}
.spec-table th{
  background:var(--sand);
  text-align:left;
  padding:14px 16px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--border);
  white-space:nowrap;
  font-family:'Noto Sans SC','PingFang SC',sans-serif;
}
.spec-table td{padding:14px 16px;border-bottom:1px solid var(--divider);color:var(--text-2);line-height:1.75;}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr{transition:background .24s var(--ease);}
.spec-table tbody tr:hover{background:var(--primary-light);}
.spec-table td strong{color:var(--ink);font-weight:600;}

.steps{list-style:none;counter-reset:step;margin:6px 0 0;}
.steps li{position:relative;padding:0 0 26px 58px;counter-increment:step;}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;
  width:42px;height:42px;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-weight:700;font-size:15px;
  display:grid;place-items:center;
  font-family:'Noto Sans SC','PingFang SC',sans-serif;
}
.steps li::after{
  content:"";position:absolute;left:20px;top:50px;bottom:6px;width:2px;background:var(--divider);
}
.steps li:last-child{padding-bottom:0;}
.steps li:last-child::after{display:none;}
.steps h3{margin:9px 0 4px;font-size:17px;font-family:'Noto Sans SC','PingFang SC',sans-serif;font-weight:700;}
.steps p{margin:0;font-size:15px;color:var(--text-2);line-height:1.8;}

.data-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:14px;margin-top:6px;}
.data-card{
  background:var(--sand);
  border-radius:var(--r-sm);
  padding:16px 18px;
  border:1px solid transparent;
  transition:border-color .26s var(--ease),background .26s var(--ease);
}
.data-card:hover{border-color:var(--primary-light);background:var(--primary-light);}
.data-card span{display:block;font-size:13px;color:var(--text-3);letter-spacing:.04em;}
.data-card strong{
  display:block;margin-top:4px;
  font-family:'Noto Serif SC','Songti SC',serif;
  font-size:19px;color:var(--ink);
  line-height:1.4;
}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.faq-item:last-child{margin-bottom:0;}
.faq-item[open]{box-shadow:var(--sh-sm);border-color:#D8D1C4;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 54px 18px 20px;
  position:relative;
  font-weight:600;
  font-size:16px;
  color:var(--ink);
  line-height:1.65;
  transition:color .26s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:21px;top:29px;
  width:14px;height:2px;border-radius:2px;background:var(--primary);
}
.faq-item summary::before{
  content:"";position:absolute;right:27px;top:23px;
  width:2px;height:14px;border-radius:2px;background:var(--primary);
  transition:transform .26s var(--ease);
}
.faq-item[open] summary{color:var(--primary-dark);}
.faq-item[open] summary::before{transform:scaleY(0);}
.faq-body{
  padding:0 22px 20px 22px;
  border-left:3px solid transparent;
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.85;
  transition:border-color .26s var(--ease);
}
.faq-item[open] .faq-body{border-left-color:var(--primary);}

/* ---------- Sidebar ---------- */
.side-col{position:sticky;top:100px;display:grid;gap:20px;}
.side-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--sh-sm);
}
.side-card h3{
  font-size:17px;
  margin-bottom:14px;
  padding-left:12px;
  border-left:3px solid var(--accent);
  font-family:'Noto Sans SC','PingFang SC',sans-serif;
  font-weight:700;
}
.toc-list{list-style:none;display:grid;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.toc-list a:hover{background:var(--primary-light);color:var(--primary-dark);}
.toc-list a.is-current{background:var(--primary-light);color:var(--primary-dark);font-weight:600;border-left-color:var(--primary);}
.side-links{list-style:none;display:grid;gap:8px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:11px 14px;
  border-radius:var(--r-sm);
  background:var(--sand);
  font-size:15px;
  color:var(--text-2);
  transition:background .24s var(--ease),color .24s var(--ease),padding-left .24s var(--ease);
}
.side-links a::after{content:"→";font-size:14px;color:var(--text-3);transition:transform .24s var(--ease),color .24s var(--ease);}
.side-links a:hover{background:var(--primary-light);color:var(--primary-dark);padding-left:18px;}
.side-links a:hover::after{color:var(--primary);transform:translateX(3px);}
.side-note{font-size:14.5px;color:var(--text-2);line-height:1.85;margin-bottom:16px;}
.side-card .btn{width:100%;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-xl);
  padding:72px 40px;
  text-align:center;
  margin-top:8px;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.18;
}
.cta-panel::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 18% 22%,rgba(31,111,99,.6),transparent 62%);
}
.cta-inner{position:relative;z-index:2;max-width:680px;margin:0 auto;}
.cta-inner h2{color:#fff;font-size:clamp(23px,2.8vw,33px);}
.cta-inner .cta-sub{margin:16px 0 28px;font-size:16px;color:rgba(255,255,255,.72);line-height:1.85;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.48);letter-spacing:.02em;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.3fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-text strong{color:#fff;font-size:15px;}
.site-footer .brand-text em{color:rgba(255,255,255,.42);}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:34ch;}
.site-footer h4{
  color:#fff;
  font-size:16px;
  margin-bottom:16px;
  font-family:'Noto Sans SC','PingFang SC',sans-serif;
  font-weight:700;
  letter-spacing:.03em;
}
.footer-links,.footer-contact{list-style:none;display:grid;gap:10px;font-size:15px;}
.footer-links a{color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{color:rgba(255,255,255,.6);font-size:14.5px;line-height:1.75;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13.5px;
  color:rgba(255,255,255,.48);
}

/* ---------- Mobile bar ---------- */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  align-items:center;gap:12px;
  padding:10px 16px;
  background:rgba(13,27,24,.96);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-top:1px solid rgba(255,255,255,.12);
}
.mobile-bar .btn{flex:1;}
.mobile-bar-close{
  width:38px;height:38px;flex-shrink:0;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
  background:transparent;color:rgba(255,255,255,.7);
  font-size:20px;line-height:1;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.mobile-bar-close:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .nav-links a{padding:8px 10px;font-size:14px;}
  .brand-text strong{font-size:14px;}
}
@media (max-width:1024px){
  .layout-grid{grid-template-columns:1fr;gap:32px;}
  .side-col{position:static;top:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:980px){
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:12px;
    background:rgba(255,253,249,.98);
    border:1px solid var(--border);
    border-radius:20px;
    box-shadow:var(--sh-lg);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:12px 16px;font-size:15px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
}
@media (max-width:640px){
  body{font-size:16px;padding-bottom:66px;}
  .container{padding:0 16px;}
  .site-header{padding:12px 16px;}
  .site-header.is-scrolled{padding:8px 16px;}
  .cap-nav{height:56px;padding:0 12px 0 14px;gap:10px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:17px;}
  .page-hero{padding:36px 0 84px;}
  .page-main{padding:44px 0 64px;border-radius:22px 22px 0 0;margin-top:-22px;}
  .content-block{padding:22px 18px;border-radius:var(--r-md);margin-bottom:20px;}
  .content-block h2{font-size:20px;padding-left:12px;border-left-width:3px;}
  .content-block h3{font-size:17px;}
  .cta-panel{padding:48px 20px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .mobile-bar{display:flex;}
  .hero-badges{gap:8px;}
  .plat-badge{font-size:12px;padding:6px 11px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --moss:#1F6F63;
  --moss-deep:#14524A;
  --moss-soft:#E6F1EE;
  --sun:#E8763A;
  --sun-hover:#D0652C;
  --sun-soft:#FDEDE3;
  --ink:#0D1B18;
  --sand:#F6EFE6;
  --paper:#FFFDF9;
  --card:#FFFFFF;
  --text:#1B2422;
  --text-2:#5A6A66;
  --text-3:#8B9691;
  --line:#E3DED4;
  --line-2:#EDE7DC;
  --r-lg:16px;
  --r-md:12px;
  --r-img:14px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-sm:0 2px 8px rgba(13,27,24,.06);
  --sh-md:0 10px 28px rgba(13,27,24,.10);
  --sh-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--moss);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--sun-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  line-height:1.3;
  letter-spacing:.02em;
  color:var(--text);
  margin:0;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--sun);outline-offset:2px;border-radius:4px;}

.container{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section-sand{background:var(--sand);}
.section-paper{background:var(--paper);}
.section-ink{background:var(--ink);color:rgba(255,255,255,.82);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--moss);
  background:var(--moss-soft);
  border-radius:var(--r-badge);
  padding:5px 12px;
  margin-bottom:16px;
}
.section-ink .eyebrow{background:rgba(232,118,58,.16);color:#F3B48D;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;}
.section-head p{font-size:15px;color:var(--text-2);}
.section-ink .section-head h2{color:#fff;}
.section-ink .section-head p{color:rgba(255,255,255,.7);}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:20px;left:0;right:0;z-index:80;}
.cap-nav{
  display:flex;
  align-items:center;
  gap:26px;
  height:64px;
  padding:0 18px 0 20px;
  border-radius:var(--r-pill);
  background:rgba(13,27,24,.72);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 6px 24px rgba(13,27,24,.18);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled .cap-nav{
  background:rgba(13,27,24,.94);
  border-color:rgba(255,255,255,.16);
  box-shadow:0 12px 32px rgba(13,27,24,.34);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--moss) 0%,var(--moss-deep) 100%);
  color:#fff;font-family:var(--font-serif);font-size:19px;font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.6);}
.nav-links{display:flex;align-items:center;gap:2px;margin:0 0 0 6px;flex:1 1 auto;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:rgba(255,255,255,.78);
  border-radius:var(--r-pill);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--sun);
}
.nav-cta{flex:0 0 auto;padding:11px 20px;font-size:14px;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .24s var(--ease),opacity .24s var(--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);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  padding:13px 26px;border-radius:var(--r-pill);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .26s var(--ease),background .26s var(--ease),box-shadow .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.btn-primary{background:var(--sun);color:#fff;box-shadow:0 8px 22px rgba(232,118,58,.30);}
.btn-primary:hover{background:var(--sun-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,118,58,.36);}
.btn-secondary{background:transparent;border-color:var(--moss);color:var(--moss);}
.btn-secondary:hover{background:var(--moss-soft);color:var(--moss-deep);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;border-radius:var(--r-md);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--moss);}
.arrow-link::after{content:"→";transition:transform .26s var(--ease);}
.arrow-link:hover{color:var(--sun-hover);}
.arrow-link:hover::after{transform:translateX(4px);}
.section-ink .arrow-link{color:#F3B48D;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:clamp(520px,66vh,660px);
  display:flex;
  align-items:center;
  padding:140px 0 76px;
  background-image:
    linear-gradient(100deg,rgba(13,27,24,.95) 0%,rgba(13,27,24,.80) 42%,rgba(13,27,24,.42) 100%),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 90% at 88% 10%,rgba(31,111,99,.34) 0%,rgba(13,27,24,0) 62%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr);gap:56px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.62);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--sun);}
.breadcrumb span{color:rgba(255,255,255,.36);}
.hero h1{font-size:clamp(30px,4vw,46px);color:#fff;margin-bottom:14px;}
.hero-sub{font-size:18px;font-weight:600;color:#F3B48D;margin-bottom:14px;}
.hero-lead{font-size:16px;color:rgba(255,255,255,.76);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-platforms{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.55);}
.hero-platforms em{
  font-style:normal;
  padding:4px 10px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.86);
  font-size:12px;
  letter-spacing:.04em;
}
.hero-card{
  border-radius:20px;
  overflow:hidden;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--sh-lg);
  transform:rotate(4deg);
  transition:transform .32s var(--ease);
}
.hero-card:hover{transform:rotate(0deg) translateY(-6px);}
.hero-card img{width:100%;height:220px;object-fit:cover;}
.hero-card-body{padding:16px 20px;background:rgba(13,27,24,.72);}
.hero-card-body strong{display:block;font-size:16px;color:#fff;font-weight:700;}
.hero-card-body span{display:block;font-size:13px;color:rgba(255,255,255,.62);margin-top:4px;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-md);border-color:var(--line-2);}
.card-media{height:158px;overflow:hidden;background:var(--moss-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:20px;}
.card-body p{font-size:15px;color:var(--text-2);}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.tag{display:inline-block;font-size:13px;padding:4px 10px;border-radius:var(--r-badge);background:var(--moss-soft);color:var(--moss-deep);}
.tag-version{background:var(--sand);color:var(--text-2);}
.tag-cat{background:var(--sun-soft);color:var(--sun-hover);}

/* ---------- 通道分组 ---------- */
.group-block{margin-bottom:32px;}
.group-block:last-child{margin-bottom:0;}
.group-title{display:flex;align-items:baseline;gap:14px;margin-bottom:20px;}
.group-title h3{font-size:22px;}
.group-title span{font-size:13px;color:var(--text-3);letter-spacing:.06em;}
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.mini-card{
  background:var(--card);
  border:1px solid var(--line);
  border-left:4px solid var(--moss);
  border-radius:var(--r-md);
  padding:22px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-left-color .26s var(--ease);
}
.mini-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-left-color:var(--sun);}
.mini-card h4{font-size:17px;margin-bottom:8px;font-family:var(--font-sans);font-weight:700;}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.mini-meta{margin-top:12px;font-size:13px;color:var(--text-3);}

/* ---------- 图文核对 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;}
.split-media img{width:100%;height:360px;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-md);}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:24px;}
.check-list li{
  position:relative;
  padding:16px 20px 16px 52px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  font-size:15px;
  color:var(--text-2);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.check-list li:hover{transform:translateY(-3px);box-shadow:var(--sh-sm);}
.check-list li strong{display:block;color:var(--text);font-size:16px;margin-bottom:2px;}
.check-list li::before{
  content:"✓";
  position:absolute;left:18px;top:16px;
  width:22px;height:22px;line-height:22px;text-align:center;
  border-radius:50%;
  background:var(--moss-soft);color:var(--moss);
  font-size:12px;font-weight:700;
}

/* ---------- 数据速览 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.stat{
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:28px 24px;
  background:rgba(255,255,255,.04);
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.stat:hover{transform:translateY(-5px);background:rgba(255,255,255,.08);}
.stat strong{display:block;font-family:var(--font-serif);font-size:34px;color:#fff;line-height:1.2;}
.stat span{display:block;font-size:14px;color:rgba(255,255,255,.66);margin-top:8px;}

/* ---------- 自检编号卡 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 26px 26px 30px;
  overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.step:hover{transform:translateY(-5px);box-shadow:var(--sh-md);}
.step-num{
  font-family:var(--font-serif);
  font-size:44px;line-height:1;
  color:rgba(31,111,99,.14);
  margin-bottom:10px;display:block;
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:15px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.faq-item{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-sm);}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--moss);
  transform:scaleY(0);transform-origin:top;transition:transform .3s var(--ease);
}
.faq-item[open]::before{transform:scaleY(1);}
.faq-item summary{
  display:flex;align-items:center;gap:12px;
  padding:20px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;margin-left:auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--moss);border-radius:2px;
  transition:transform .26s var(--ease);
}
.faq-icon::before{left:4px;right:4px;top:9px;height:2px;}
.faq-icon::after{top:4px;bottom:4px;left:9px;width:2px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-body{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--moss-deep) 0%,var(--ink) 78%);
  color:#fff;
  padding:88px 0;
  text-align:center;
}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);color:#fff;margin-bottom:14px;}
.cta-band p{font-size:16px;color:rgba(255,255,255,.72);margin-bottom:30px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{margin-top:26px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:76px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:16px;color:#fff;display:block;line-height:1.2;}
.footer-brand em{font-style:normal;font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.55);display:block;}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:300px;}
.site-footer h4{font-family:var(--font-sans);font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:14px;}
.footer-links a{color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--sun);}
.footer-contact li{color:rgba(255,255,255,.62);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;
  position:fixed;left:14px;right:14px;bottom:14px;z-index:90;
  align-items:center;gap:12px;
  padding:10px 12px;
  border-radius:var(--r-pill);
  background:rgba(13,27,24,.94);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--sh-lg);
  backdrop-filter:blur(12px);
}
.mobile-bar .btn{flex:1 1 auto;padding:11px 18px;font-size:14px;}
.mobile-bar button{
  flex:0 0 34px;width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(255,255,255,.2);
  background:transparent;color:rgba(255,255,255,.75);
  font-size:18px;line-height:1;cursor:pointer;
}
.mobile-bar button:hover{color:#fff;background:rgba(255,255,255,.1);}
.mobile-bar.is-hidden{display:none !important;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero{padding:128px 0 64px;}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-card{transform:rotate(0deg);max-width:460px;}
  .card-grid,.mini-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .split-media img{height:300px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .nav-links{
    position:fixed;top:96px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(13,27,24,.97);
    border:1px solid rgba(255,255,255,.12);
    border-radius:20px;
    padding:14px;
    box-shadow:var(--sh-lg);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{padding:12px 16px;border-radius:var(--r-md);font-size:16px;}
  .nav-links a.active::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{min-height:620px;padding:118px 0 56px;}
  .hero-lead{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-card img{height:180px;}
  .cap-nav{height:56px;padding:0 12px 0 14px;gap:12px;}
  .brand-text strong{font-size:15px;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:17px;}
  .card-grid,.mini-grid,.stat-grid,.step-grid,.faq-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:64px 0;}
  .cta-actions .btn{width:100%;}
  .mobile-bar{display:flex;}
  .split-media img{height:230px;}
}
@media print{
  .site-header,.mobile-bar{display:none;}
}

/* roulang page: category3 */
:root{
  --brand:#1F6F63;--brand-dark:#14524A;--brand-light:#E6F1EE;
  --accent:#E8763A;--accent-hover:#D0652C;--accent-light:#FDEDE3;
  --ink:#0D1B18;--sand:#F6EFE6;--paper:#FFFDF9;--card:#FFFFFF;
  --text:#1B2422;--text-2:#5A6A66;--text-3:#8B9691;
  --border:#E3DED4;--divider:#EDE7DC;
  --r-lg:16px;--r-md:14px;--r-sm:12px;--r-pill:999px;--r-badge:6px;
  --sh-sm:0 2px 8px rgba(13,27,24,.06);
  --sh-md:0 10px 28px rgba(13,27,24,.10);
  --sh-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:280ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',-apple-system,sans-serif;
  font-size:17px;line-height:1.9;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t)}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4,h5{
  margin:0;font-family:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  font-weight:700;line-height:1.3;letter-spacing:.02em;color:var(--text);
}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--sand{background:var(--sand)}
.section--dark{background:var(--ink);color:#fff}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.section--dark p{color:rgba(255,255,255,.72)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.section--dark .section-head p{color:rgba(255,255,255,.68)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--brand);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section--dark .eyebrow{color:#7FD3C3}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;padding:18px 16px 0}
.cap-nav{
  position:relative;max-width:var(--container);margin:0 auto;
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 12px 0 18px;border-radius:var(--r-pill);
  background:rgba(13,27,24,.72);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 12px 32px rgba(13,27,24,.22);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand) 10%,var(--accent) 130%);
  color:#fff;font-family:'Noto Serif SC',serif;font-size:18px;font-weight:700;
  box-shadow:0 0 0 1px rgba(255,255,255,.16),0 6px 16px rgba(31,111,99,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.04em}
.brand-text em{font-style:normal;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;color:rgba(255,255,255,.82);white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-links a.active{color:#fff;font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-cta{flex:none;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;padding:0;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);
  border-radius:12px;cursor:pointer;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:2px;background:#fff;border-radius:2px;transition:var(--t)}
.cap-nav.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.cap-nav.is-open .nav-toggle span:nth-child(2){opacity:0}
.cap-nav.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,118,58,.32)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(232,118,58,.38)}
.btn-secondary{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-secondary:hover{background:var(--brand-light);color:var(--brand-dark)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.arrow-link i{font-style:normal;transition:transform var(--t)}
.arrow-link:hover i{transform:translateX(4px)}
.section--dark .arrow-link{color:#7FD3C3}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;margin-top:-82px;padding:158px 0 76px;overflow:hidden;color:#fff;
  background-image:
    linear-gradient(100deg,rgba(13,27,24,.95) 6%,rgba(13,27,24,.78) 48%,rgba(13,27,24,.42) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 380px at 88% 10%,rgba(232,118,58,.22),transparent 70%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{opacity:.5}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);color:#fff;max-width:16em;margin-bottom:16px;
  text-shadow:0 4px 24px rgba(0,0,0,.3);
}
.hero-lead{font-size:17.5px;color:rgba(255,255,255,.8);max-width:34em;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px}
.hero-badges span{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:var(--r-badge);
  font-size:13px;color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
}
.hero-cover{
  position:relative;transform:rotate(4deg);border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-lg);border:1px solid rgba(255,255,255,.18);margin-left:auto;max-width:420px;
}
.hero-cover img{border-radius:20px;width:100%}
.hero-cover figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;font-size:13.5px;
  color:rgba(255,255,255,.9);
  background:linear-gradient(180deg,transparent,rgba(13,27,24,.88));
}

/* ============ 数据卡 ============ */
.spec-card{
  height:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-sm);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.spec-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md);border-color:rgba(31,111,99,.3)}
.spec-card .spec-label{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:8px}
.spec-card .spec-value{
  font-family:'Noto Serif SC',serif;font-size:30px;font-weight:700;color:var(--brand);
  line-height:1.2;letter-spacing:.01em;
}
.spec-card .spec-value small{font-size:15px;font-weight:500;color:var(--text-2);margin-left:4px}
.spec-card p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.7}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:52px}
.timeline::before{
  content:"";position:absolute;left:50%;top:6px;bottom:6px;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,var(--brand),rgba(31,111,99,.12));
}
.tl-item{position:relative;width:50%;padding:0 52px 40px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 40px 52px}
.tl-item::before{
  content:"";position:absolute;top:12px;right:-7px;width:14px;height:14px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 6px rgba(232,118,58,.16);
}
.tl-item:nth-child(even)::before{left:-7px;right:auto}
.tl-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--sh-sm);transition:transform var(--t),box-shadow var(--t);
}
.tl-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.tl-num{
  display:block;font-family:'Noto Serif SC',serif;font-size:28px;font-weight:700;
  color:rgba(31,111,99,.3);letter-spacing:.06em;margin-bottom:4px;
}
.tl-card h3{font-size:20px;margin-bottom:8px}
.tl-card p{font-size:15.5px;color:var(--text-2);line-height:1.85}

/* ============ 系统要求 ============ */
.req-card{
  height:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-sm);transition:transform var(--t),box-shadow var(--t);
}
.req-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md)}
.req-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.req-icon{
  width:44px;height:44px;border-radius:14px;flex:none;display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);font-size:19px;font-weight:700;
  font-family:'Noto Serif SC',serif;
}
.req-head h3{font-size:21px}
.req-head span{display:block;font-size:13px;color:var(--text-3);font-weight:400;font-family:inherit;letter-spacing:.02em}
.req-list li{
  display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--divider);
  font-size:15px;color:var(--text-2);
}
.req-list li:last-child{border-bottom:0}
.req-list li b{flex:none;width:74px;color:var(--text);font-weight:600}
.req-foot{
  margin-top:18px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--accent-light);color:#99431B;font-size:14px;line-height:1.7;
}

/* ============ 适用场景（深色） ============ */
.scene-card{
  height:100%;border-radius:var(--r-lg);padding:26px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  transition:transform var(--t),background var(--t),border-color var(--t);
}
.scene-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.09);border-color:rgba(127,211,195,.45)}
.scene-card .tagline{font-size:13px;letter-spacing:.1em;color:#7FD3C3;margin-bottom:10px}
.scene-card h3{font-size:20px;margin-bottom:10px;color:#fff}
.scene-card p{font-size:15.5px;color:rgba(255,255,255,.72);line-height:1.85}
.scene-card ul{margin-top:16px}
.scene-card ul li{position:relative;padding-left:18px;font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.9}
.scene-card ul li::before{
  content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;border-radius:2px;
  background:var(--accent);
}

/* ============ 校验图文 ============ */
.check-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);border:1px solid var(--border)}
.check-figure img{border-radius:0;width:100%}
.check-list{margin-top:20px}
.check-list li{
  display:flex;gap:12px;padding:12px 0;font-size:15.5px;color:var(--text-2);
  border-bottom:1px dashed var(--divider);
}
.check-list li:last-child{border-bottom:0}
.check-list li b{color:var(--brand);font-weight:700;flex:none}

/* ============ FAQ ============ */
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  overflow:hidden;transition:border-color var(--t),box-shadow var(--t);height:100%;
}
.faq-item.open{border-color:rgba(31,111,99,.4);box-shadow:var(--sh-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-sign{position:relative;width:18px;height:18px;flex:none}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:var(--t);
}
.faq-sign::before{top:8px;left:0;width:18px;height:2px}
.faq-sign::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-sign::before{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a-inner{
  margin:0 22px 22px;padding:2px 0 2px 16px;border-left:3px solid var(--accent);
  font-size:15.5px;color:var(--text-2);line-height:1.85;
}

/* ============ 分类入口卡 ============ */
.cat-card{
  display:flex;flex-direction:column;height:100%;padding:26px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--border);box-shadow:var(--sh-sm);
  color:var(--text);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--sh-md);border-color:rgba(31,111,99,.35);color:var(--text)}
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;margin-bottom:14px;width:fit-content;
}
.badge-brand{background:var(--brand-light);color:var(--brand)}
.badge-accent{background:var(--accent-light);color:#99431B}
.badge-sand{background:var(--sand);color:var(--text-2)}
.cat-card h3{font-size:19px;margin-bottom:8px}
.cat-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:18px}
.cat-card .arrow-link{margin-top:auto}
.cat-card.is-current{border-color:rgba(232,118,58,.5);background:linear-gradient(180deg,#fff, #FFF8F3)}

/* ============ CTA ============ */
.cta-strip{
  position:relative;overflow:hidden;padding:88px 0;text-align:center;
  background:linear-gradient(120deg,#0D1B18 12%,#14524A 82%);
}
.cta-strip::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 320px at 50% 120%,rgba(232,118,58,.28),transparent 70%);
}
.cta-strip .container{position:relative;z-index:2}
.cta-strip h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:14px}
.cta-strip p{color:rgba(255,255,255,.76);font-size:16.5px;max-width:36em;margin:0 auto}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin:30px 0 20px}
.cta-note{font-size:13.5px;color:rgba(255,255,255,.55)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text strong,.footer-brand .brand-text em{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.6)}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:26em}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:14.5px;color:rgba(255,255,255,.66)}
.footer-links a{color:rgba(255,255,255,.7)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ============ 移动端底部条 ============ */
.mobile-bar{display:none}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;align-items:center;gap:12px;
  padding:12px 16px;background:rgba(13,27,24,.95);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid rgba(255,255,255,.12);
}
.mobile-bar .btn{flex:1}
.mobile-bar .close{
  width:36px;height:36px;flex:none;border-radius:10px;cursor:pointer;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);
  color:#fff;font-size:16px;line-height:1;
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .site-header{padding:12px 12px 0}
  .cap-nav{height:58px;padding:0 10px 0 14px}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;margin-left:0;
    flex-direction:column;align-items:stretch;gap:2px;padding:10px;display:none;
    background:rgba(13,27,24,.97);border:1px solid rgba(255,255,255,.14);
    border-radius:20px;box-shadow:var(--sh-lg);
  }
  .cap-nav.is-open .nav-links{display:flex}
  .nav-links a{padding:12px 16px;border-radius:14px;font-size:15.5px}
  .nav-links a.active::after{display:none}
  .nav-links a.active{background:rgba(232,118,58,.16)}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .page-hero{margin-top:-70px;padding:132px 0 60px}
  .hero-cover{display:none}
  .timeline::before{left:9px;transform:none}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 28px 42px}
  .tl-item::before,.tl-item:nth-child(even)::before{left:3px;right:auto;top:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero{padding:120px 0 52px}
  .hero-lead{font-size:16px}
  .spec-card .spec-value{font-size:26px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:640px){
  body{padding-bottom:78px}
  .mobile-bar{display:flex}
  .mobile-bar.hide{display:none}
}

/* roulang page: category4 */
:root{
  --primary:#1F6F63;
  --primary-dark:#14524A;
  --primary-soft:#E6F1EE;
  --accent:#E8763A;
  --accent-dark:#D0652C;
  --accent-soft:#FDEDE3;
  --ink:#0D1B18;
  --sand:#F6EFE6;
  --read:#FFFDF9;
  --card:#FFFFFF;
  --text:#1B2422;
  --text-2:#5A6A66;
  --text-3:#8B9691;
  --border:#E3DED4;
  --divider:#EDE7DC;
  --r-lg:16px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-sm:0 2px 8px rgba(13,27,24,.06);
  --shadow-md:0 10px 28px rgba(13,27,24,.10);
  --shadow-lg:0 20px 48px rgba(13,27,24,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-serif:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--read);
}
img{max-width:100%;height:auto;display:block}
figure{margin:0}
a{color:var(--primary);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--accent-dark)}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-serif);
  color:var(--text);
  line-height:1.3;
  letter-spacing:.02em;
  margin:0 0 12px;
  font-weight:700;
}
p{margin:0 0 20px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* 布局基础 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sand{background:var(--sand)}
.section-read{background:var(--read)}
.section-dark{background:var(--ink);color:rgba(255,255,255,.78)}
.section-dark h2,.section-dark h3{color:#fff}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--accent);margin:0 0 10px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.section-sub{font-size:16px;color:var(--text-2);margin:0}
.section-dark .section-sub{color:rgba(255,255,255,.66)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,118,58,.28)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(232,118,58,.34)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary)}
.link-arrow span{transition:transform .24s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:6px;
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-platform{background:var(--primary-soft);color:var(--primary-dark)}
.badge-cat{background:var(--accent-soft);color:var(--accent-dark)}
.badge-version{background:var(--sand);color:var(--text-2);border:1px solid var(--border)}

/* 导航 */
.site-header{position:fixed;top:20px;left:0;right:0;z-index:90;padding:0 20px;pointer-events:none}
.cap-nav{
  pointer-events:auto;
  position:relative;
  display:flex;align-items:center;gap:20px;
  max-width:1200px;margin:0 auto;height:64px;
  padding:0 10px 0 18px;
  border-radius:999px;
  background:rgba(13,27,24,.78);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 12px 32px rgba(13,27,24,.26);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),height .3s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:18px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;color:#fff;letter-spacing:.02em}
.brand-text em{font-size:11px;font-style:normal;color:rgba(255,255,255,.62);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;justify-content:center;gap:4px;flex:1;margin:0;padding:0}
.nav-links a{
  display:block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:rgba(255,255,255,.82);
  transition:color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav-links a.active{color:#fff;background:rgba(232,118,58,.20);box-shadow:inset 0 -2px 0 0 var(--accent)}
.nav-cta{flex:0 0 auto;padding:12px 22px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;
  flex-direction:column;justify-content:center;gap:5px;cursor:pointer;
  border-radius:12px;transition:background .24s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.10)}
.nav-toggle span{display:block;width:20px;height:2px;margin:0 auto;border-radius:2px;background:#fff;transition:transform .26s var(--ease),opacity .26s var(--ease)}
.cap-nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.cap-nav.open .nav-toggle span:nth-child(2){opacity:0}
.cap-nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 页头 */
.page-hero{position:relative;background:var(--sand);padding:132px 0 72px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-90px;top:-60px;width:420px;height:420px;
  border:1px solid rgba(31,111,99,.10);border-radius:50%;
  box-shadow:0 0 0 64px rgba(31,111,99,.045),0 0 0 128px rgba(232,118,58,.03);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:80px;
  background:linear-gradient(180deg,rgba(246,239,230,0),rgba(255,253,249,1));
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:28px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--accent-dark)}
.breadcrumb .sep{color:#C6BFB2}
.breadcrumb .current{color:var(--primary-dark);font-weight:600}
.hero-grid{align-items:center}
.hero-kicker{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--primary);margin:0 0 14px}
.page-hero h1{font-size:clamp(28px,6.5vw,46px);margin-bottom:14px;max-width:15em}
.hero-lead{font-size:18px;line-height:1.85;color:var(--text-2);max-width:32em;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:14px;color:var(--text-2)}
.hero-facts li{position:relative;padding-left:16px}
.hero-facts li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.hero-cover{position:relative;margin-top:8px}
.hero-cover img{border-radius:20px;box-shadow:var(--shadow-lg);transform:rotate(-3deg);transition:transform .32s var(--ease)}
.hero-cover:hover img{transform:rotate(-1deg) translateY(-4px)}
.hero-cover figcaption{margin-top:16px;text-align:center;font-size:13px;color:var(--text-3)}

/* 图文对照条目 */
.tut-list{display:flex;flex-direction:column;gap:32px}
.tut-row{
  display:grid;grid-template-columns:minmax(0,.88fr) minmax(0,1.12fr);
  gap:40px;align-items:center;
  padding:28px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);
}
.tut-row:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:#D9D2C5}
.tut-row.reverse .tut-media{order:2}
.tut-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);box-shadow:var(--shadow-sm)}
.step-no{
  display:inline-block;font-family:var(--font-serif);font-size:14px;font-weight:700;
  letter-spacing:.14em;color:var(--accent);margin-bottom:8px;
}
.tut-copy h3{font-size:22px;margin-bottom:12px}
.tut-copy p{color:var(--text-2);margin-bottom:16px}
.check-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:16px;line-height:1.75;color:var(--text);
}
.check-list li::before{content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:2px;background:var(--primary);opacity:.85}
.tut-copy .link-arrow{margin-top:6px}

/* 速查卡片 */
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quick-card{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:10px;
  padding:24px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.quick-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;
  transition:transform .3s var(--ease);
}
.quick-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.quick-card:hover::before{transform:scaleY(1)}
.quick-card h3{font-size:19px;margin:0}
.quick-card p{font-size:15px;line-height:1.8;color:var(--text-2);margin:0}
.quick-card .link-arrow{margin-top:auto;padding-top:6px}
.quick-tags{display:flex;gap:8px;flex-wrap:wrap}

/* 数据区 */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:8px}
.stat-item{border-left:1px solid rgba(255,255,255,.16);padding-left:20px}
.stat-num{font-family:var(--font-serif);font-size:clamp(28px,3vw,40px);color:#fff;margin:0 0 6px;line-height:1.2}
.stat-label{font-size:14px;color:rgba(255,255,255,.64);margin:0}
.stat-note{margin-top:32px;font-size:14px;color:rgba(255,255,255,.55);max-width:52em}

/* FAQ */
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  padding:0 22px;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--accent),var(--shadow-sm);border-color:#D9D2C5}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 34px 20px 0;
  font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--text);
  transition:color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-family:var(--font-sans);font-size:22px;font-weight:400;color:var(--accent);
}
.faq-item[open] summary::after{content:"–"}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-item summary:hover{color:var(--primary-dark)}
.faq-body{border-top:1px solid var(--divider);padding:16px 0 22px}
.faq-body p{margin:0;font-size:16px;line-height:1.85;color:var(--text-2)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0D1B18 0%,#14524A 100%);
  color:#fff;text-align:center;padding:88px 0;
}
.cta-band::before{
  content:"";position:absolute;left:50%;top:-140px;transform:translateX(-50%);
  width:520px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,118,58,.20),rgba(232,118,58,0) 70%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.75);margin-bottom:28px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}
.cta-note{margin:24px 0 0;font-size:13px;color:rgba(255,255,255,.52)}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.70);padding:72px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:15px;line-height:1.75}
.footer-links a{color:rgba(255,255,255,.70)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding-top:24px;font-size:13px;color:rgba(255,255,255,.50);
}

/* 移动端底部条 */
.mobile-bar{
  position:fixed;left:12px;right:12px;bottom:12px;z-index:95;
  display:none;align-items:center;gap:12px;
  padding:10px 12px 10px 16px;border-radius:var(--r-lg);
  background:rgba(13,27,24,.94);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-lg);
}
.mobile-bar-text{font-size:13px;color:rgba(255,255,255,.72);flex:1;line-height:1.5}
.mobile-bar .btn{padding:11px 16px;font-size:14px;white-space:nowrap}
.mobile-bar-close{
  width:28px;height:28px;border:0;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;font-size:16px;line-height:1;
  cursor:pointer;flex:0 0 auto;transition:background .24s var(--ease);
}
.mobile-bar-close:hover{background:rgba(255,255,255,.24)}

/* 响应式 */
@media (max-width:1023px){
  .site-header{padding:0 16px}
  .cap-nav{height:58px;padding:0 10px 0 14px;gap:12px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-cta{display:none}
  .nav-links{display:none}
  .cap-nav.open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:4px;
    position:absolute;top:70px;left:0;right:0;z-index:5;
    padding:14px;border-radius:22px;
    background:rgba(13,27,24,.97);
    border:1px solid rgba(255,255,255,.14);
    box-shadow:var(--shadow-lg);
  }
  .cap-nav.open .nav-links a{padding:12px 16px;font-size:15px}
  .section{padding:72px 0}
  .tut-row{grid-template-columns:1fr;gap:24px;padding:22px}
  .tut-row.reverse .tut-media{order:0}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .faq-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .site-header{top:14px}
  .page-hero{padding:104px 0 56px}
  .page-hero h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-lead{font-size:16px}
  .hero-cover img{transform:none}
  .quick-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr;gap:22px}
  .stat-item{border-left:0;border-top:1px solid rgba(255,255,255,.16);padding:18px 0 0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:64px 0}
  .mobile-bar{display:flex}
  .tut-copy h3{font-size:20px}
}