/* roulang page: index */
:root{
  --c-ink:#14161A;
  --c-ink-2:#5A6068;
  --c-ink-3:#8C9199;
  --c-paper:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36;
  --c-primary-deep:#08221F;
  --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C;
  --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA;
  --c-line-strong:#CFCAC0;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px}

.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media(min-width:1400px){.container{max-width:1240px;padding-left:32px;padding-right:32px}}

/* ============ 通用按钮 ============ */
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);
  background:var(--c-primary);color:#fff;border:1px solid var(--c-primary);
  font-size:15px;font-weight:500;line-height:1.4;cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-solid:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px)}
.btn-solid:active{transform:translateY(0)}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);
  background:transparent;color:var(--c-primary);border:1px solid var(--c-line-strong);
  font-size:15px;font-weight:500;line-height:1.4;cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-outline:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary)}
.link-more{color:var(--c-ink-2);font-size:14.5px;border-bottom:1px solid var(--c-line-strong);padding-bottom:2px;transition:color .22s var(--ease),border-color .22s var(--ease)}
.link-more:hover{color:var(--c-accent);border-color:var(--c-accent)}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-paper);border-bottom:1px solid transparent;transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.site-header.is-scrolled{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--c-primary);
  color:#fff;display:grid;place-items:center;font-family:var(--font-display);font-size:15px;font-weight:600;
}
.brand-text{font-family:var(--font-display);font-size:19px;font-weight:600;color:var(--c-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-chips{display:flex;gap:8px;padding-bottom:14px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-block;padding:8px 16px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-ink-2);font-size:14px;line-height:1.4;
  white-space:nowrap;border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.chip.active{background:var(--c-primary);color:#fff}
.chip.active:hover{background:var(--c-primary-deep);color:#fff}

/* ============ Hero ============ */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--c-line)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--c-primary);
  position:relative;padding-left:18px;margin-bottom:18px;
}
.hero-eyebrow::before{content:"";position:absolute;left:0;top:50%;width:10px;height:1px;background:var(--c-accent);transform:translateY(-50%)}
.hero-title{
  font-family:var(--font-display);
  font-size:clamp(2.25rem,4.6vw,3.5rem);
  line-height:1.15;font-weight:600;letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-sub{font-size:17px;color:var(--c-ink-2);line-height:1.75;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats{display:flex;margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line)}
.stat{padding-right:28px;margin-right:28px;border-right:1px solid var(--c-line)}
.stat:last-child{border-right:none;margin-right:0;padding-right:0}
.stat-num{display:block;font-variant-numeric:tabular-nums;font-size:22px;font-weight:600;color:var(--c-primary);line-height:1.25;letter-spacing:.02em}
.stat-label{font-size:13px;color:var(--c-ink-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--c-line);background:var(--c-surface-2);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);pointer-events:none;
  background-image:linear-gradient(rgba(20,22,26,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(20,22,26,.035) 1px,transparent 1px);
  background-size:28px 28px;
}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{
  font-family:var(--font-display);font-size:clamp(1.55rem,2.6vw,2.25rem);line-height:1.3;
  position:relative;padding-left:18px;
}
.section-title::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;background:var(--c-accent);border-radius:2px}
.section-sub{font-size:15px;color:var(--c-ink-2);margin-top:10px;padding-left:18px;max-width:52em}

/* ============ 分类速览 ============ */
.cat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:48px}
.cat-chip{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 20px;transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.cat-chip:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-line-strong)}
.cat-chip-name{display:block;font-size:15.5px;font-weight:600;color:var(--c-primary);margin-bottom:6px}
.cat-chip-desc{display:block;font-size:13.5px;color:var(--c-ink-3);line-height:1.6}

/* ============ 编号目录 ============ */
.dir-wrap{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.dir-item{
  display:flex;align-items:center;gap:20px;min-height:92px;padding:18px 12px;
  border-bottom:1px solid var(--c-line);
  transition:background .22s var(--ease);
}
.dir-item:hover{background:var(--c-surface-2)}
.dir-num{
  font-variant-numeric:tabular-nums;font-size:28px;line-height:1;color:var(--c-ink-3);
  flex:0 0 52px;transition:color .22s var(--ease);
}
.dir-item:hover .dir-num{color:var(--c-accent)}
.dir-body{flex:1 1 auto;min-width:0}
.dir-title{display:block;font-size:17px;font-weight:600;line-height:1.5}
.dir-desc{display:block;font-size:13.5px;color:var(--c-ink-2);margin-top:4px}
.dir-arrow{flex:0 0 auto;color:var(--c-ink-3);font-size:18px;transition:transform .22s var(--ease),color .22s var(--ease)}
.dir-item:hover .dir-arrow{transform:translateX(4px);color:var(--c-accent)}

/* ============ 精选条目 ============ */
.card-lg{
  display:flex;flex-direction:column;height:100%;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.card-lg:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-line-strong)}
.card-lg-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.card-lg-media img{width:100%;height:100%;object-fit:cover;transition:transform .36s var(--ease)}
.card-lg:hover .card-lg-media img{transform:scale(1.02)}
.badge-cat{
  position:absolute;left:16px;top:16px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;line-height:1.4;padding:4px 10px;border-radius:var(--r-xs);
}
.card-lg-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.card-lg-title{font-size:21px;line-height:1.5;margin-bottom:12px}
.card-lg-summary{font-size:15px;line-height:1.75;color:var(--c-ink-2);margin-bottom:20px}
.meta-line{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums;margin-top:auto}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--c-line-strong);display:inline-block}

.mini-list{display:flex;flex-direction:column;height:100%;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:6px 20px}
.mini-item{display:flex;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--c-line);transition:background .22s var(--ease)}
.mini-item:last-child{border-bottom:none}
.mini-item:hover{background:var(--c-surface-2)}
.mini-thumb{width:88px;height:88px;flex:0 0 88px;border-radius:var(--r-sm);overflow:hidden;background:var(--c-surface-2)}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-title{font-size:16px;font-weight:600;line-height:1.5}
.mini-desc{font-size:13.5px;color:var(--c-ink-2);margin-top:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{font-size:13px;color:var(--c-ink-3);margin-top:8px;font-variant-numeric:tabular-nums}

/* ============ 最新信息（CMS 列表） ============ */
.news-card{
  display:block;height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-line-strong)}
.news-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .36s var(--ease)}
.news-card:hover .news-media img{transform:scale(1.02)}
.news-body{padding:22px 24px 24px}
.news-cat{display:inline-block;font-size:13px;line-height:1.4;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-xs);padding:3px 9px;margin-bottom:12px}
.news-title{font-size:18px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-summary{font-size:15px;line-height:1.75;color:var(--c-ink-2);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}
.empty-state{
  background:var(--c-surface-2);border-radius:var(--r-md);padding:48px 24px;text-align:center;
}
.empty-state-icon{width:44px;height:44px;margin:0 auto 16px;border-radius:50%;background:var(--c-surface);border:1px solid var(--c-line);display:grid;place-items:center;color:var(--c-ink-3);font-size:18px}
.empty-state-title{font-size:16px;color:var(--c-ink-2);margin-bottom:8px}
.empty-state-note{font-size:13.5px;color:var(--c-ink-3)}

/* ============ 相关推荐 ============ */
.rec-card{
  display:block;height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:20px;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.rec-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-line-strong)}
.rec-cat{display:inline-block;font-size:12.5px;color:var(--c-accent);background:var(--c-accent-soft);border-radius:var(--r-pill);padding:3px 10px;margin-bottom:12px}
.rec-title{font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-meta{font-size:13px;color:var(--c-ink-3);margin-top:14px;font-variant-numeric:tabular-nums}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--c-primary);color:#fff;border-radius:var(--r-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-family:var(--font-display);font-size:clamp(1.3rem,2.2vw,1.75rem);line-height:1.35}
.cta-band p{font-size:15px;color:rgba(255,255,255,.78);margin-top:10px;max-width:32em}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;padding:11px 22px;border-radius:var(--r-sm);
  background:#fff;color:var(--c-primary);border:1px solid #fff;font-size:15px;font-weight:500;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.btn-white:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.btn-ghost-white{
  display:inline-flex;align-items:center;justify-content:center;padding:11px 22px;border-radius:var(--r-sm);
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);font-size:15px;font-weight:500;cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.btn-ghost-white:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8)}

/* ============ FAQ ============ */
.faq .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;
}
.faq .accordion-button{
  background:var(--c-surface);color:var(--c-ink);font-size:17px;font-weight:600;
  padding:20px 24px;box-shadow:none;font-family:var(--font-sans);line-height:1.6;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.faq .accordion-button:hover{background:var(--c-surface-2)}
.faq .accordion-button:not(.collapsed){background:var(--c-surface);color:var(--c-primary);box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--c-accent);outline-offset:-2px}
.faq .accordion-button::after{
  background-image:none;content:"";width:12px;height:12px;flex:0 0 auto;
  margin-left:auto;border-right:1.6px solid var(--c-ink-3);border-bottom:1.6px solid var(--c-ink-3);
  transform:rotate(45deg);transform-origin:60% 60%;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--c-accent)}
.faq .accordion-body{
  margin:0 24px 22px;padding:0 0 0 16px;border-left:2px solid var(--c-accent);
  font-size:15.5px;line-height:1.8;color:var(--c-ink-2);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-logo{display:block;font-family:var(--font-display);font-size:19px;font-weight:600;color:rgba(255,255,255,.95);margin-bottom:16px}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.72);max-width:26em}
.footer-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.btn-foot{
  padding:8px 16px;border-radius:var(--r-sm);background:#fff;color:var(--c-primary);
  border:1px solid #fff;font-size:13.5px;cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease);
}
.btn-foot:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.btn-foot.ghost{background:transparent;color:rgba(255,255,255,.9);border-color:rgba(255,255,255,.4)}
.btn-foot.ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8);color:#fff}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:rgba(255,255,255,.95);margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .22s var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 滚动揭示 ============ */
html.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .36s var(--ease),transform .36s var(--ease)}
html.js .reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* ============ 响应式 ============ */
@media(max-width:1200px){
  .cat-strip{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:992px){
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .hero-visual img{aspect-ratio:16/10}
  .section{padding:72px 0}
  .dir-wrap{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:32px}
}
@media(max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .nav-chips{
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  }
  .nav-top{height:64px}
  .hero-stats{flex-wrap:wrap;gap:16px 0}
  .stat{padding-right:20px;margin-right:20px}
  .cat-strip{grid-template-columns:1fr}
  .section-head{margin-bottom:28px}
  .section-sub{padding-left:18px}
}
@media(max-width:576px){
  body{font-size:16px}
  .brand-text{font-size:15px}
  .brand-mark{width:30px;height:30px;flex-basis:30px;font-size:13px;border-radius:8px}
  .btn-solid,.btn-outline{padding:9px 16px;font-size:14px}
  .section{padding:56px 0}
  .hero-actions{width:100%}
  .hero-actions .btn-solid,.hero-actions .btn-outline{flex:1 1 auto}
  .dir-num{font-size:24px;flex-basis:42px}
  .dir-item{gap:14px;padding:16px 8px;min-height:80px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-white,.cta-actions .btn-ghost-white{flex:1 1 auto}
  .faq .accordion-button{font-size:16px;padding:16px 18px}
  .faq .accordion-body{margin:0 18px 18px}
  .card-lg-title{font-size:19px}
}

/* roulang page: article */
:root{
  --c-ink:#14161A; --c-ink-2:#5A6068; --c-ink-3:#8C9199;
  --c-paper:#F7F6F2; --c-surface:#FFFFFF; --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36; --c-primary-deep:#08221F; --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C; --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA; --c-line-strong:#CFCAC0;
  --c-ok:#2F6B4F; --c-warn:#A8761E; --c-err:#A63A2E;
  --r-xs:4px; --r-sm:8px; --r-md:10px; --r-lg:16px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-paper);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:var(--r-xs)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:-.01em;margin:0}
p{margin:0 0 1.4em}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{padding:0 32px}}
section{position:relative}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-paper);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0 12px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:19px;color:var(--c-primary);line-height:1.2}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-size:15px;font-family:var(--font-display);
  transition:background-color .22s var(--ease),transform .22s var(--ease);
}
.brand:hover .brand-mark{background:var(--c-primary-deep);transform:translateY(-1px)}
.brand-text{white-space:nowrap}
.nav-chips{
  display:flex;gap:8px;overflow-x:auto;padding:0 0 14px;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-ink-2);font-size:14px;line-height:1.4;
  white-space:nowrap;transition:background-color .22s var(--ease),color .22s var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.chip.active{background:var(--c-primary);color:#fff}

/* ---------- Buttons ---------- */
.btn-solid,.btn-outline,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);font-size:15px;line-height:1.4;
  border:1px solid transparent;transition:all .22s var(--ease);white-space:nowrap;
}
.btn-solid{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-solid:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px)}
.btn-solid:active{transform:translateY(0)}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-line-strong)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;color:var(--c-ink-2);border-color:var(--c-line)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-line-strong);background:var(--c-surface-2)}
.btn-sm{padding:8px 16px;font-size:14px}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:26px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);letter-spacing:.02em}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-line-strong)}
.crumb .now{color:var(--c-ink-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article head ---------- */
.article-head{padding:22px 0 34px;border-bottom:1px solid var(--c-line)}
.head-top{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:20px}
.badge-cat{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;line-height:1.6;
}
.article-title{
  font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.35;margin:16px 0 18px;max-width:22ch;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-line-strong)}
.share-group{display:flex;gap:8px;flex:0 0 auto;padding-top:6px}

/* ---------- Layout ---------- */
.article-wrap{padding:44px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:56px;align-items:start}
.article-main{min-width:0}
.article-body{
  font-size:17px;line-height:1.85;color:#20242A;max-width:760px;
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.35rem,2.2vw,1.7rem);line-height:1.4;margin:48px 0 16px;
  padding-left:14px;border-left:3px solid var(--c-accent);scroll-margin-top:96px;
}
.article-body h3{font-size:1.18rem;line-height:1.5;margin:32px 0 12px;color:var(--c-ink)}
.article-body h4{font-size:1.03rem;margin:24px 0 10px;color:var(--c-ink-2)}
.article-body p{margin:0 0 1.4em;letter-spacing:.01em}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.35em;line-height:1.8}
.article-body li{margin-bottom:.5em}
.article-body ul li::marker{color:var(--c-accent)}
.article-body ol li::marker{color:var(--c-accent);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:var(--c-surface-2);
  border-left:3px solid var(--c-accent);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--c-primary);border-bottom:1px solid var(--c-primary)}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.article-body img{width:100%;border-radius:var(--r-md);margin:26px 0 10px;background:var(--c-surface-2)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);line-height:1.6}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left;vertical-align:top}
.article-body th{background:var(--c-surface-2);font-weight:600;color:var(--c-ink-2)}
.article-body tr:last-child td{border-bottom:none}
.article-body pre{
  background:#101315;color:#E8E6E1;padding:18px 20px;border-radius:var(--r-md);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em}
.article-body p code,.article-body li code{background:var(--c-surface-2);padding:2px 6px;border-radius:var(--r-xs);color:var(--c-primary)}
.table-scroll{overflow-x:auto;margin:24px 0}

/* ---------- Empty state ---------- */
.empty-state{
  background:var(--c-surface-2);border-radius:var(--r-md);padding:56px 32px;text-align:center;max-width:760px;
}
.empty-state .empty-mark{
  width:52px;height:52px;margin:0 auto 18px;border-radius:var(--r-pill);
  background:var(--c-surface);color:var(--c-primary);display:grid;place-items:center;
  font-family:var(--font-display);font-size:20px;border:1px solid var(--c-line);
}
.empty-state h2{font-size:1.3rem;margin-bottom:10px}
.empty-state p{color:var(--c-ink-2);font-size:15px;max-width:44ch;margin:0 auto 22px}

/* ---------- Aside ---------- */
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.aside-title{
  font-size:13px;letter-spacing:.08em;color:var(--c-ink-3);font-family:var(--font-sans);
  font-weight:600;margin-bottom:14px;text-transform:none;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 12px;font-size:14px;color:var(--c-ink-2);border-radius:var(--r-sm);
  border-left:2px solid transparent;line-height:1.55;
}
.toc-list a:hover{background:var(--c-surface-2);color:var(--c-primary)}
.toc-list a.is-current{color:var(--c-primary);border-left-color:var(--c-accent);background:var(--c-primary-soft)}
.aside-mini{display:flex;flex-direction:column;gap:12px}
.mini-item{display:block;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
.mini-item:last-child{border-bottom:none;padding-bottom:0}
.mini-item .mini-cat{font-size:12px;color:var(--c-accent);letter-spacing:.04em}
.mini-item h4{font-size:14.5px;line-height:1.55;margin:6px 0 4px;color:var(--c-ink)}
.mini-item:hover h4{color:var(--c-primary)}
.mini-item time{font-size:12px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}

/* ---------- Article footer blocks ---------- */
.article-foot{margin-top:52px;padding-top:34px;border-top:1px solid var(--c-line);max-width:760px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:32px}
.tag-label{font-size:13px;color:var(--c-ink-3);margin-right:4px;letter-spacing:.06em}
.tag{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);font-size:13px;
  transition:all .22s var(--ease);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}

.cta-band{
  background:var(--c-primary);color:#fff;border-radius:var(--r-lg);
  padding:38px 34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:1.4rem;color:#fff;margin-bottom:8px}
.cta-band p{margin:0;font-size:14.5px;color:rgba(255,255,255,.78);max-width:46ch;line-height:1.75}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px}
.btn-inverse{background:#fff;color:var(--c-primary);border-color:#fff;padding:11px 22px;border-radius:var(--r-sm);font-size:15px;display:inline-flex;align-items:center;transition:all .22s var(--ease)}
.btn-inverse:hover{background:var(--c-accent-soft);border-color:var(--c-accent-soft);color:var(--c-primary-deep)}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);padding:11px 22px;border-radius:var(--r-sm);font-size:15px;display:inline-flex;align-items:center;transition:all .22s var(--ease)}
.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.1)}

.postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.postnav-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:20px 22px;transition:all .22s var(--ease);
}
.postnav-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.postnav-card .pn-label{font-size:12.5px;color:var(--c-ink-3);letter-spacing:.06em}
.postnav-card h3{font-size:15.5px;line-height:1.55;margin-top:8px;color:var(--c-ink)}
.postnav-card:hover h3{color:var(--c-primary)}
.postnav-card.right{text-align:right}

/* ---------- Sections ---------- */
.sec{padding:72px 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-head h2{font-size:clamp(1.45rem,2.4vw,2rem);line-height:1.3;padding-left:14px;border-left:3px solid var(--c-accent);font-family:var(--font-display)}
.sec-head .sec-sub{font-size:15px;color:var(--c-ink-2);margin:8px 0 0 17px;line-height:1.7}
.link-more{font-size:14px;color:var(--c-primary);border-bottom:1px solid var(--c-line-strong);padding-bottom:2px}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:all .22s var(--ease);
}
.rel-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.rel-card .rel-thumb{aspect-ratio:16/9;background:var(--c-surface-2);overflow:hidden}
.rel-card .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .36s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:20px}
.rel-body .rel-cat{font-size:12.5px;color:var(--c-accent);letter-spacing:.04em}
.rel-body h3{font-size:15.5px;line-height:1.6;margin:8px 0 6px;color:var(--c-ink)}
.rel-card:hover h3{color:var(--c-primary)}
.rel-body .rel-meta{font-size:12.5px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item:hover{border-color:var(--c-line-strong)}
.faq-item.open{box-shadow:var(--sh-1);border-color:var(--c-line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:20px 22px;text-align:left;
  font-size:16px;font-family:var(--font-display);color:var(--c-ink);line-height:1.55;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:1px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:1.5px}
.faq-icon::after{left:7px;top:0;width:1.5px;height:16px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a-inner{padding:0 22px 22px 22px;border-left:2px solid var(--c-accent);margin-left:22px;padding-left:18px;color:var(--c-ink-2);font-size:15px;line-height:1.8}
.faq-a-inner p:last-child{margin-bottom:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-primary);color:rgba(255,255,255,.78);margin-top:24px;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-logo{font-family:var(--font-display);font-size:19px;color:#fff;display:inline-block;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:34ch;margin-bottom:20px}
.footer-actions{display:flex;flex-wrap:wrap;gap:10px}
.btn-foot{
  padding:9px 18px;border-radius:var(--r-sm);background:#fff;color:var(--c-primary);
  border:1px solid #fff;font-size:13.5px;transition:all .22s var(--ease);
}
.btn-foot:hover{background:var(--c-accent-soft);border-color:var(--c-accent-soft)}
.btn-foot.ghost{background:transparent;color:rgba(255,255,255,.85);border-color:rgba(255,255,255,.4)}
.btn-foot.ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:rgba(255,255,255,.95);margin-bottom:16px;font-family:var(--font-sans);font-weight:600}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .36s var(--ease),transform .36s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:40px}
}
@media (max-width:991px){
  .article-layout{grid-template-columns:1fr;gap:32px}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .article-aside .aside-card{flex:1 1 260px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-body{font-size:16.5px}
}
@media (max-width:767px){
  .sec{padding:56px 0}
  .article-wrap{padding:32px 0 0}
  .postnav{grid-template-columns:1fr}
  .postnav-card.right{text-align:left}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start}
  .article-head{padding-bottom:26px}
  .crumb .now{max-width:34ch}
  .rel-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand-text{font-size:17px}
  .nav-top{padding:12px 0 10px}
  .btn-solid{padding:10px 16px;font-size:14px}
  .article-body{font-size:16px}
  .article-body h2{margin-top:38px}
  .footer-grid{grid-template-columns:1fr}
  .share-group{width:100%}
  .share-group .btn-ghost{flex:1 1 auto;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --c-ink:#14161A;
  --c-ink-2:#5A6068;
  --c-ink-3:#8C9199;
  --c-paper:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36;
  --c-primary-deep:#08221F;
  --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C;
  --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA;
  --c-line-strong:#CFCAC0;
  --c-ok:#2F6B4F;
  --c-warn:#A8761E;
  --c-err:#A63A2E;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-ink);text-decoration:none;transition:color 220ms var(--ease),border-color 220ms var(--ease);}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:var(--r-xs);}

.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){
  .container{max-width:1240px;padding-left:32px;padding-right:32px;}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--c-paper);
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:rgba(247,246,242,.96);
  backdrop-filter:saturate(140%) blur(6px);
}
.nav-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0 10px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);
  color:#fff;
  border-radius:var(--r-sm);
  font-family:var(--font-display);
  font-size:17px;
  line-height:1;
}
.brand-text{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.01em;
}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);
  color:#fff;
  border-radius:var(--r-sm);
  padding:10px 20px;
  font-size:14.5px;
  border:1px solid var(--c-primary);
  transition:background 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.btn-solid:hover{
  background:var(--c-primary-deep);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-solid:active{transform:translateY(0);}
.nav-chips{
  display:flex;
  gap:8px;
  padding-bottom:14px;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-ink-2);
  font-size:14px;
  white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.chip.active{background:var(--c-primary);color:#fff;}
@media (max-width:991px){
  .nav-chips{
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
    mask-image:linear-gradient(to right,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
  }
}
@media (max-width:575px){
  .brand-text{font-size:16px;}
  .btn-solid{padding:9px 14px;font-size:13.5px;}
  .chip{padding:7px 13px;font-size:13px;}
}

/* ---------- page hero ---------- */
.page-hero{padding:44px 0 40px;border-bottom:1px solid var(--c-line);}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--c-ink-3);
  margin-bottom:18px;
}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line-strong);}
.crumb .cur{color:var(--c-ink-2);}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 380px;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;
  color:var(--c-primary);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);display:block;}
.page-hero h1{
  font-family:var(--font-display);
  font-size:clamp(1.85rem,3.6vw,2.7rem);
  line-height:1.25;
  color:var(--c-ink);
  margin-bottom:14px;
}
.hero-lead{color:var(--c-ink-2);font-size:16px;max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag{
  font-size:13px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
}
.hero-figure{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:26px;}
  .hero-figure{display:none;}
  .page-hero{padding:32px 0 30px;}
}

/* ---------- layout with anchor nav ---------- */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:34px;}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(1.45rem,2.4vw,2rem);
  line-height:1.3;
  padding-left:14px;
  position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;background:var(--c-accent);border-radius:2px;
}
.section-head p{color:var(--c-ink-2);font-size:15px;margin-top:12px;padding-left:14px;max-width:760px;}

.anchor-layout{
  display:grid;
  grid-template-columns:250px 1fr;
  gap:56px;
  align-items:start;
}
.anchor-nav{
  position:sticky;
  top:118px;
  border-left:1px solid var(--c-line);
  padding-left:0;
}
.anchor-nav h3{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-ink-3);
  font-weight:600;
  padding:0 0 12px 18px;
}
.anchor-nav a{
  display:block;
  padding:10px 0 10px 18px;
  font-size:14.5px;
  color:var(--c-ink-2);
  border-left:2px solid transparent;
  margin-left:-1px;
  transition:color 200ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease);
}
.anchor-nav a .num{
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  color:var(--c-ink-3);
  margin-right:8px;
}
.anchor-nav a:hover{color:var(--c-primary);background:var(--c-surface-2);}
.anchor-nav a.active{
  color:var(--c-primary);
  border-left-color:var(--c-accent);
  background:var(--c-primary-soft);
  font-weight:600;
}
.anchor-nav a.active .num{color:var(--c-accent);}

.group-block{margin-bottom:54px;}
.group-block:last-child{margin-bottom:0;}
.group-head{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-line);
  margin-bottom:4px;
}
.group-head h2{
  font-family:var(--font-display);
  font-size:clamp(1.25rem,2vw,1.6rem);
  line-height:1.35;
}
.group-index{
  font-variant-numeric:tabular-nums;
  font-size:13px;
  color:var(--c-accent);
  letter-spacing:.06em;
}
.group-note{
  color:var(--c-ink-2);
  font-size:14.5px;
  margin:12px 0 6px;
  max-width:720px;
}
.row-item{
  display:grid;
  grid-template-columns:56px 1fr 28px;
  gap:18px;
  align-items:center;
  padding:22px 12px 22px 4px;
  border-bottom:1px solid var(--c-line);
  transition:background 220ms var(--ease);
  border-radius:var(--r-sm);
}
.row-item:hover{background:var(--c-surface-2);}
.row-num{
  font-variant-numeric:tabular-nums;
  font-size:22px;
  color:var(--c-ink-3);
  font-weight:500;
  line-height:1;
  transition:color 220ms var(--ease);
}
.row-item:hover .row-num{color:var(--c-accent);}
.row-body h3{
  font-size:1.05rem;
  line-height:1.55;
  margin-bottom:6px;
  font-weight:600;
}
.row-body p{color:var(--c-ink-2);font-size:14.5px;line-height:1.75;}
.row-arrow{
  color:var(--c-line-strong);
  font-size:18px;
  justify-self:end;
  transition:transform 220ms var(--ease),color 220ms var(--ease);
}
.row-item:hover .row-arrow{transform:translateX(4px);color:var(--c-accent);}
.row-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;
}
.meta-pill{
  font-size:12.5px;
  padding:3px 10px;
  border-radius:var(--r-xs);
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.meta-pill.alt{background:var(--c-accent-soft);color:#8E4722;}

@media (max-width:991px){
  .anchor-layout{grid-template-columns:1fr;gap:26px;}
  .anchor-nav{
    position:sticky;
    top:104px;
    z-index:9;
    background:var(--c-paper);
    border-left:0;
    border-bottom:1px solid var(--c-line);
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding:10px 0;
    scrollbar-width:none;
  }
  .anchor-nav::-webkit-scrollbar{display:none;}
  .anchor-nav h3{display:none;}
  .anchor-nav a{
    flex:0 0 auto;
    border-left:0;
    border-radius:var(--r-pill);
    background:var(--c-surface-2);
    padding:7px 14px;
    margin:0;
    font-size:13.5px;
  }
  .anchor-nav a.active{background:var(--c-primary);color:#fff;border-left:0;}
  .anchor-nav a.active .num{color:rgba(255,255,255,.7);}
  .row-item{grid-template-columns:42px 1fr 22px;gap:12px;padding:18px 8px 18px 4px;}
  .row-num{font-size:18px;}
}

/* ---------- checklist panel ---------- */
.check-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr 1fr;
  box-shadow:var(--sh-1);
}
.check-panel .panel-media{position:relative;background:var(--c-surface-2);min-height:260px;}
.check-panel .panel-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.check-panel .panel-body{padding:38px 36px;}
.check-panel h2{
  font-family:var(--font-display);
  font-size:clamp(1.3rem,2.1vw,1.7rem);
  line-height:1.35;
  margin-bottom:14px;
}
.check-panel > .panel-body > p{color:var(--c-ink-2);font-size:15px;margin-bottom:24px;}
.check-list li{
  display:flex;gap:12px;
  padding:14px 0;
  border-top:1px solid var(--c-line);
  font-size:14.5px;
  color:var(--c-ink-2);
}
.check-list li:first-child{border-top:0;}
.check-list .dot{
  flex:0 0 auto;
  width:20px;height:20px;
  border-radius:50%;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  display:flex;align-items:center;justify-content:center;
  margin-top:3px;
  font-variant-numeric:tabular-nums;
}
.check-list strong{color:var(--c-ink);font-weight:600;}
@media (max-width:991px){
  .check-panel{grid-template-columns:1fr;}
  .check-panel .panel-media{min-height:200px;position:relative;}
  .check-panel .panel-body{padding:28px 22px;}
}

/* ---------- compare ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:box-shadow 220ms var(--ease),transform 220ms var(--ease),border-color 220ms var(--ease);
}
.compare-card:hover{
  transform:translateY(-2px);
  border-color:var(--c-line-strong);
  box-shadow:var(--sh-2);
}
.compare-card h3{
  font-family:var(--font-display);
  font-size:1.2rem;
  margin-bottom:8px;
}
.compare-card .cap{
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:18px;
}
.compare-card ul li{
  display:flex;gap:10px;
  font-size:14.5px;
  color:var(--c-ink-2);
  padding:9px 0;
  border-top:1px dashed var(--c-line);
}
.compare-card ul li:first-child{border-top:0;}
.compare-card ul li::before{
  content:"—";
  color:var(--c-accent);
  flex:0 0 auto;
}
@media (max-width:767px){
  .compare-grid{grid-template-columns:1fr;}
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item:hover{border-color:var(--c-line-strong);}
.faq-item.open{box-shadow:var(--sh-2);border-color:var(--c-line-strong);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background:none;
  border:0;
  text-align:left;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
}
.faq-icon{
  flex:0 0 auto;
  width:18px;height:18px;
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
  transition:transform 220ms var(--ease),opacity 220ms var(--ease);
}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px 26px;
  border-left:2px solid var(--c-accent);
  margin-left:24px;
  color:var(--c-ink-2);
  font-size:14.8px;
  line-height:1.8;
}

/* ---------- related categories ---------- */
.cat-switch{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:26px 0 0;
}
.cat-switch a{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  font-size:14.5px;
  color:var(--c-ink-2);
  transition:all 220ms var(--ease);
}
.cat-switch a:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:var(--c-primary-soft);
  transform:translateY(-1px);
}
.cat-switch a.current{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}

/* ---------- cta ---------- */
.cta-bar{
  background:var(--c-primary);
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
}
.cta-bar h2{
  font-family:var(--font-display);
  font-size:clamp(1.3rem,2.2vw,1.75rem);
  color:#fff;
  margin-bottom:10px;
}
.cta-bar p{color:rgba(255,255,255,.78);font-size:14.8px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;}
.btn-white{
  background:#fff;color:var(--c-primary);
  border:1px solid #fff;
  border-radius:var(--r-sm);
  padding:11px 22px;
  font-size:14.5px;
  transition:transform 220ms var(--ease),background 220ms var(--ease),color 220ms var(--ease);
}
.btn-white:hover{background:var(--c-accent);color:#fff;border-color:var(--c-accent);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.45);
  border-radius:var(--r-sm);
  padding:11px 22px;
  font-size:14.5px;
  transition:border-color 220ms var(--ease),background 220ms var(--ease),transform 220ms var(--ease);
}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions button{width:100%;}
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-primary);
  color:rgba(255,255,255,.78);
  padding:64px 0 0;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:46px;
}
.footer-logo{
  font-family:var(--font-display);
  font-size:19px;
  color:#fff;
  display:inline-block;
  margin-bottom:14px;
}
.footer-logo:hover{color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px;}
.footer-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;}
.btn-foot{
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
  border-radius:var(--r-sm);
  padding:8px 16px;
  font-size:13.5px;
  cursor:pointer;
  transition:background 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-foot:hover{background:rgba(255,255,255,.24);border-color:rgba(255,255,255,.4);}
.btn-foot.ghost{background:transparent;}
.btn-foot.ghost:hover{background:rgba(255,255,255,.12);}
.footer-col h4{
  font-size:14px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.95);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- toast ---------- */
.toast-tip{
  position:fixed;
  left:50%;
  bottom:36px;
  transform:translate(-50%,20px);
  background:var(--c-ink);
  color:#fff;
  font-size:14px;
  padding:11px 20px;
  border-radius:var(--r-sm);
  opacity:0;
  pointer-events:none;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease);
  z-index:2000;
}
.toast-tip.show{opacity:1;transform:translate(-50%,0);}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --c-ink:#14161A;
  --c-ink-2:#5A6068;
  --c-ink-3:#8C9199;
  --c-paper:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36;
  --c-primary-deep:#08221F;
  --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C;
  --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA;
  --c-line-strong:#CFCAC0;
  --c-ok:#2F6B4F;
  --c-warn:#A8761E;
  --c-err:#A63A2E;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease),background-color .15s var(--ease),border-color .15s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:var(--r-xs);}
.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-paper);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,246,242,.96);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.nav-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:18px 0 12px;
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:17px;line-height:1;font-weight:600;
  flex:0 0 auto;
}
.brand-text{
  font-family:var(--font-display);
  font-size:19px;font-weight:600;letter-spacing:-.01em;color:var(--c-primary);
  white-space:nowrap;
}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;
  border:1px solid var(--c-primary);
  border-radius:var(--r-sm);
  padding:10px 20px;font-size:15px;font-weight:500;
  transition:background-color .15s var(--ease),transform .15s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-solid:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-solid:active{transform:translateY(0);}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  padding:0 0 16px;overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-ink-2);
  font-size:14px;line-height:1.4;white-space:nowrap;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.chip.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ---------- Page hero ---------- */
.page-hero{padding:44px 0 0;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--c-ink-3);margin-bottom:18px;
}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line-strong);}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:end;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-primary);margin-bottom:14px;
}
.hero-tag::before{content:"";width:22px;height:1px;background:var(--c-accent);display:block;}
.page-hero h1{
  font-family:var(--font-display);
  font-size:clamp(2rem,4.2vw,3.1rem);
  line-height:1.2;font-weight:600;letter-spacing:-.01em;
  margin-bottom:16px;
}
.page-hero h1 em{
  font-style:normal;color:var(--c-primary);
  box-shadow:inset 0 -8px 0 var(--c-accent-soft);
}
.hero-lead{
  max-width:640px;color:var(--c-ink-2);font-size:17px;line-height:1.8;
}
.hero-media{
  aspect-ratio:16/6;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-surface-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:var(--c-primary);
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-sm);padding:10px 20px;font-size:15px;font-weight:500;
  transition:border-color .15s var(--ease),background-color .15s var(--ease),transform .15s var(--ease);
}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft);transform:translateY(-1px);}

/* ---------- Sections ---------- */
.section{padding:96px 0 0;}
.section-head{margin-bottom:36px;}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(1.55rem,2.6vw,2.25rem);
  line-height:1.3;font-weight:600;letter-spacing:-.01em;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.section-head p{margin-top:12px;color:var(--c-ink-2);font-size:15px;max-width:760px;}
.section-head.with-link{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.link-more{font-size:14px;color:var(--c-primary);border-bottom:1px solid var(--c-line-strong);padding-bottom:2px;}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ---------- Stats strip ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;margin-top:36px;
}
.stat{padding:24px 26px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat b{
  display:block;font-family:Inter,ui-sans-serif,sans-serif;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  font-size:30px;line-height:1.2;font-weight:600;color:var(--c-primary);
}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--c-ink-2);}

/* ---------- Module grid ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.mod-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mod-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-line-strong);}
.mod-card .thumb{
  aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2);position:relative;
}
.mod-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .36s var(--ease);}
.mod-card:hover .thumb img{transform:scale(1.02);}
.badge-cat{
  position:absolute;left:14px;top:14px;
  background:var(--c-primary-soft);color:var(--c-primary);
  border-radius:var(--r-xs);padding:4px 10px;font-size:13px;line-height:1.5;
}
.mod-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.mod-card h3{font-size:1.25rem;line-height:1.5;font-weight:600;}
.mod-card p{color:var(--c-ink-2);font-size:15px;line-height:1.75;}
.mod-card .meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-3);display:flex;gap:10px;flex-wrap:wrap;align-items:center;
}
.mod-card.wide{grid-column:span 2;flex-direction:row;}
.mod-card.wide .thumb{flex:0 0 46%;aspect-ratio:auto;min-height:280px;}
.mod-card.wide .body{padding:28px;}
.mod-card.wide h3{font-size:1.45rem;}
.mod-card.wide .thumb img{height:100%;}
.step-inline{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;
}
.step-inline li{
  font-size:13px;color:var(--c-ink-2);background:var(--c-surface-2);
  border-radius:var(--r-pill);padding:4px 12px;
}

/* ---------- Flow ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--c-line);
}
.flow-item{padding:28px 24px 4px;border-right:1px solid var(--c-line);position:relative;}
.flow-item:last-child{border-right:0;}
.flow-item .num{
  font-family:Inter,ui-sans-serif,sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;letter-spacing:.08em;color:var(--c-accent);margin-bottom:12px;display:block;
}
.flow-item h3{font-size:1.05rem;font-weight:600;line-height:1.55;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--c-ink-2);line-height:1.75;}

/* ---------- Scenario rows ---------- */
.rows{border-top:1px solid var(--c-line);}
.row-item{
  display:grid;grid-template-columns:200px 1fr 240px;gap:28px;align-items:start;
  padding:26px 16px;border-bottom:1px solid var(--c-line);
  transition:background-color .22s var(--ease);
}
.row-item:hover{background:var(--c-surface-2);}
.row-item h3{font-family:var(--font-display);font-size:1.15rem;font-weight:600;line-height:1.5;}
.row-item .desc{font-size:15px;color:var(--c-ink-2);line-height:1.8;}
.row-item .note{
  font-size:14px;color:var(--c-primary);
  border-left:2px solid var(--c-accent);padding-left:12px;line-height:1.7;
}

/* ---------- Chips switch ---------- */
.switch-box{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:28px;
}
.switch-box h2{
  font-family:var(--font-display);font-size:1.35rem;font-weight:600;margin-bottom:8px;
}
.switch-box p{color:var(--c-ink-2);font-size:15px;margin-bottom:20px;}
.switch-chips{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:96px;
  background:var(--c-primary);color:#fff;
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{
  font-family:var(--font-display);font-size:1.6rem;font-weight:600;color:#fff;margin-bottom:8px;
}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;color:var(--c-primary);border:1px solid #fff;
  border-radius:var(--r-sm);padding:11px 22px;font-size:15px;font-weight:500;
  transition:background-color .15s var(--ease),transform .15s var(--ease);
}
.btn-light:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-outline-light2{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);
  border-radius:var(--r-sm);padding:11px 22px;font-size:15px;font-weight:500;
  transition:border-color .15s var(--ease),background-color .15s var(--ease),transform .15s var(--ease);
}
.btn-outline-light2:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-1px);}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;text-align:left;background:transparent;border:0;
  padding:20px 56px 20px 24px;position:relative;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q::after,.faq-q::before{
  content:"";position:absolute;right:24px;top:50%;background:var(--c-primary);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-q::before{width:13px;height:1.5px;transform:translateY(-50%);}
.faq-q::after{width:1.5px;height:13px;transform:translateY(-50%);}
.faq-q[aria-expanded="true"]::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.faq-q[aria-expanded="true"]{color:var(--c-primary);}
.faq-a{
  padding:0 24px 20px;color:var(--c-ink-2);font-size:15px;line-height:1.8;
}
.faq-a .inner{border-left:2px solid var(--c-accent);padding-left:14px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-primary);color:rgba(255,255,255,.78);margin-top:110px;padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:48px;
}
.footer-brand .footer-logo{
  display:inline-block;font-family:var(--font-display);font-size:19px;font-weight:600;color:#fff;margin-bottom:14px;
}
.footer-desc{font-size:14px;line-height:1.8;max-width:320px;}
.footer-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;}
.btn-foot{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);
  border-radius:var(--r-sm);padding:8px 16px;font-size:13px;
  transition:border-color .15s var(--ease),background-color .15s var(--ease);
}
.btn-foot:hover{border-color:#fff;background:rgba(255,255,255,.12);}
.footer-col h4{
  font-size:14px;letter-spacing:.06em;color:rgba(255,255,255,.95);font-weight:600;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .36s var(--ease),transform .36s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- Responsive ---------- */
@media (max-width:1399.98px){
  .container{padding:0 24px;}
}
@media (max-width:1199.98px){
  .row-item{grid-template-columns:170px 1fr 200px;gap:22px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .nav-top{padding:14px 0 10px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:30px;height:30px;font-size:15px;}
  .hero-grid{grid-template-columns:1fr;gap:26px;align-items:start;}
  .hero-media{aspect-ratio:16/7;}
  .section{padding:72px 0 0;}
  .mod-grid{grid-template-columns:1fr;}
  .mod-card.wide{grid-column:span 1;flex-direction:column;}
  .mod-card.wide .thumb{flex:0 0 auto;aspect-ratio:16/9;min-height:0;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-item{border-bottom:1px solid var(--c-line);padding-bottom:24px;}
  .flow-item:nth-child(2n){border-right:0;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--c-line);}
  .row-item{grid-template-columns:1fr;gap:12px;padding:24px 12px;}
  .cta-band{padding:32px 26px;margin-top:72px;}
  .site-footer{padding-top:56px;margin-top:80px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .nav-chips{
    padding-bottom:12px;
    mask-image:linear-gradient(to right,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  }
  .btn-solid{padding:9px 16px;font-size:14px;}
  .page-hero{padding-top:28px;}
  .hero-media{display:none;}
  .page-hero h1{font-size:clamp(1.7rem,7vw,2.2rem);}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--c-line);padding:20px;}
  .stat:last-child{border-bottom:0;}
  .flow{grid-template-columns:1fr;}
  .flow-item{border-right:0;padding:24px 12px;}
  .cta-actions .btn-light,.cta-actions .btn-outline-light2{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section-head.with-link{align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --c-ink:#14161A;
  --c-ink-2:#5A6068;
  --c-ink-3:#8C9199;
  --c-paper:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36;
  --c-primary-deep:#08221F;
  --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C;
  --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA;
  --c-line-strong:#CFCAC0;
  --c-ok:#2F6B4F;
  --c-warn:#A8761E;
  --c-err:#A63A2E;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease)}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{font-weight:600;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:var(--r-xs)}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-paper);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
  background:rgba(247,246,242,.95);
}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0 12px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary);
  color:#fff;display:grid;place-items:center;font-family:var(--font-display);
  font-size:18px;line-height:1;flex:0 0 auto;
}
.brand-text{font-family:var(--font-display);font-size:19px;font-weight:600;color:var(--c-primary)}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;border:1px solid var(--c-primary);
  border-radius:var(--r-sm);padding:10px 20px;font-size:15px;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.btn-solid:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);transform:translateY(-1px)}
.btn-solid:active{transform:translateY(0)}
.nav-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:0 0 16px;scrollbar-width:none;-ms-overflow-style:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);
  background:var(--c-surface-2);color:var(--c-ink-2);font-size:14.5px;
  border:1px solid transparent;transition:background .22s var(--ease),color .22s var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.chip.active{background:var(--c-primary);color:#fff}
.chip.active:hover{background:var(--c-primary-deep);color:#fff}

/* ---------- hero ---------- */
.page-hero{padding:56px 0 40px;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--c-line);
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-line-strong)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;margin-top:22px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-primary);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--c-accent)}
.page-hero h1{
  font-family:var(--font-display);
  font-size:clamp(1.9rem,4vw,2.9rem);
  line-height:1.2;
  margin:16px 0 14px;
}
.hero-lead{font-size:16.5px;color:var(--c-ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;border-radius:var(--r-sm);
  border:1px solid var(--c-line-strong);background:transparent;color:var(--c-ink);
  font-size:15px;transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:var(--c-surface-2);
}

/* ---------- metric strip ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.metric{padding:26px 24px;border-right:1px solid var(--c-line);transition:background .22s var(--ease)}
.metric:last-child{border-right:0}
.metric:hover{background:var(--c-surface-2)}
.metric-num{
  font-family:var(--font-display);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  font-size:1.85rem;line-height:1.2;color:var(--c-primary);
}
.metric-label{font-size:14px;color:var(--c-ink-2);margin-top:6px}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(1.55rem,2.6vw,2.15rem);
  line-height:1.3;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.section-note{font-size:15px;color:var(--c-ink-2);max-width:440px}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:8px}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:26px;width:1px;background:var(--c-line);
}
.tl-item{position:relative;padding:0 0 0 56px;margin-bottom:40px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:8px;top:8px;width:15px;height:15px;border-radius:50%;
  background:var(--c-surface);border:1px solid var(--c-line-strong);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-item:hover .tl-node{background:var(--c-accent);border-color:var(--c-accent);box-shadow:0 0 0 4px var(--c-accent-soft)}
.tl-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.tl-index{
  font-family:var(--font-display);font-size:15px;color:var(--c-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;
}
.tl-head h3{font-size:1.2rem;line-height:1.5;font-family:var(--font-display)}
.tl-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px 24px;margin-top:14px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.tl-item:hover .tl-body{box-shadow:var(--sh-2);border-color:var(--c-line-strong);transform:translateY(-2px)}
.tl-body p{color:var(--c-ink-2);font-size:15.5px}
.tl-points{margin-top:14px;display:grid;gap:8px}
.tl-points li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2);line-height:1.75}
.tl-points li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--c-primary-soft);border:1px solid var(--c-primary);
}

/* ---------- compat rows ---------- */
.compat-list{border-top:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-md);border:1px solid var(--c-line);overflow:hidden;box-shadow:var(--sh-1)}
.compat-row{
  display:grid;grid-template-columns:210px 1fr 220px;gap:28px;align-items:center;
  padding:22px 26px;border-bottom:1px solid var(--c-line);
  transition:background .22s var(--ease);
}
.compat-row:last-child{border-bottom:0}
.compat-row:hover{background:var(--c-surface-2)}
.compat-name{font-family:var(--font-display);font-size:1.05rem;color:var(--c-ink)}
.compat-desc{font-size:15px;color:var(--c-ink-2);line-height:1.75}
.compat-tag{
  justify-self:start;font-size:13px;padding:5px 12px;border-radius:var(--r-xs);
  background:var(--c-primary-soft);color:var(--c-primary);
}
.compat-tag.warn{background:var(--c-accent-soft);color:#8E4A26}
.compat-tag.ok{background:#E8F0EC;color:var(--c-ok)}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:32px}
.gallery-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.gallery-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-line-strong)}
.gallery-thumb{overflow:hidden;background:var(--c-surface-2)}
.gallery-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .36s var(--ease)}
.gallery-card:hover .gallery-thumb img{transform:scale(1.02)}
.gallery-body{padding:22px 24px 24px}
.gallery-body h3{font-size:1.1rem;font-family:var(--font-display);line-height:1.5}
.gallery-body p{font-size:15px;color:var(--c-ink-2);margin-top:8px}
.gallery-meta{font-size:13px;color:var(--c-ink-3);margin-top:14px;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:550;line-height:1.6;color:var(--c-ink);
}
.faq-sign{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-sign::before{left:0;top:7px;width:16px;height:2px}
.faq-sign::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-sign::after{transform:scaleY(0)}
.faq-item.open .faq-sign::before{background:var(--c-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a-inner{padding:0 24px 22px}
.faq-a-inner p{
  font-size:15.5px;color:var(--c-ink-2);line-height:1.85;
  border-left:2px solid var(--c-accent);padding-left:16px;
}

/* ---------- closing / CTA ---------- */
.related-block{border-top:1px solid var(--c-line);padding-top:36px;margin-top:56px}
.related-title{font-size:14px;letter-spacing:.06em;color:var(--c-ink-3);margin-bottom:16px}
.related-chips{display:flex;flex-wrap:wrap;gap:10px}
.cta-band{
  margin-top:48px;background:var(--c-primary);color:#fff;border-radius:var(--r-lg);
  padding:42px 40px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-family:var(--font-display);font-size:1.6rem;line-height:1.35}
.cta-band p{font-size:15px;color:rgba(255,255,255,.78);margin-top:10px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;color:var(--c-primary);border:1px solid #fff;
  border-radius:var(--r-sm);padding:10px 20px;font-size:15px;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-light:hover{background:var(--c-accent-soft);transform:translateY(-1px)}
.btn-outline-light{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);
  border-radius:var(--r-sm);padding:10px 20px;font-size:15px;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-primary);color:rgba(255,255,255,.78);margin-top:0;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-logo{font-family:var(--font-display);font-size:19px;color:rgba(255,255,255,.96);display:inline-block}
.footer-desc{font-size:14.5px;line-height:1.8;margin-top:14px;max-width:340px;color:rgba(255,255,255,.72)}
.footer-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.btn-foot{
  background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff;
  border-radius:var(--r-sm);padding:8px 16px;font-size:14px;cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.btn-foot:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}
.btn-foot.ghost{border-style:dashed}
.footer-col h4{
  font-size:14px;letter-spacing:.06em;color:rgba(255,255,255,.95);
  font-weight:600;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.76)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .36s var(--ease),transform .36s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .section{padding:80px 0}
  .compat-row{grid-template-columns:180px 1fr 170px;gap:20px}
}
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/8}
  .section{padding:72px 0}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .compat-row{grid-template-columns:1fr;gap:10px;padding:20px}
  .compat-tag{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .nav-top{padding:14px 0 10px}
  .brand-text{font-size:17px}
  .brand-mark{width:32px;height:32px;font-size:16px}
  .nav-chips{
    -webkit-mask-image:linear-gradient(to right,#000 calc(100% - 32px),transparent 100%);
    mask-image:linear-gradient(to right,#000 calc(100% - 32px),transparent 100%);
    padding-bottom:14px;
  }
  .page-hero{padding:36px 0 32px}
  .hero-media img{aspect-ratio:16/9}
  .section{padding:56px 0}
  .gallery{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .timeline::before{left:7px}
  .tl-item{padding-left:36px;margin-bottom:32px}
  .tl-node{left:0}
  .tl-body{padding:20px}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-a-inner{padding:0 20px 20px}
}
@media (max-width:575px){
  .container{padding:0 20px}
  .metric-strip{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .btn-solid,.btn-ghost{width:100%}
  .hero-actions{flex-direction:column}
  .cta-actions{width:100%;flex-direction:column}
  .btn-light,.btn-outline-light{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --c-ink:#14161A;
  --c-ink-2:#5A6068;
  --c-ink-3:#8C9199;
  --c-paper:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEDE7;
  --c-primary:#0E3B36;
  --c-primary-deep:#08221F;
  --c-primary-soft:#E6EDEA;
  --c-accent:#C86B3C;
  --c-accent-soft:#F5E7DE;
  --c-line:#E4E1DA;
  --c-line-strong:#CFCAC0;
  --c-ok:#2F6B4F;
  --c-warn:#A8761E;
  --c-err:#A63A2E;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05);
  --sh-2:0 18px 40px -24px rgba(20,22,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::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:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--c-ink);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color 150ms var(--ease),background-color 150ms var(--ease);}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;}
figure{margin:0;}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:var(--r-xs);}

.container,
.container-fluid{
  width:100%;
  max-width:1240px !important;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){
  .container,.container-fluid{padding-left:32px;padding-right:32px;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--c-paper);
  border-bottom:1px solid transparent;
  transition:background-color 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{
  background:#FBFAF7;
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.nav-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:16px 0 12px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:36px;height:36px;
  flex:0 0 auto;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  display:grid;
  place-items:center;
  font-family:var(--font-display);
  font-size:17px;
  line-height:1;
}
.brand-text{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
}
.btn-solid,.btn-outline,.btn-light,.btn-ghost-light{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 20px;
  border-radius:var(--r-sm);
  font-size:14.5px;
  font-weight:500;
  line-height:1.4;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color 150ms var(--ease),color 150ms var(--ease),border-color 150ms var(--ease),transform 150ms var(--ease),box-shadow 150ms var(--ease);
}
.btn-solid{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.btn-solid:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-solid:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--c-line-strong);color:var(--c-ink);}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.btn-light{background:#fff;border-color:#fff;color:var(--c-primary);}
.btn-light:hover{background:#fff;color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.7);color:#fff;}

.nav-chips{
  display:flex;
  gap:8px;
  padding-bottom:14px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-ink-2);
  font-size:14px;
  line-height:1.4;
  white-space:nowrap;
  transition:background-color 220ms var(--ease),color 220ms var(--ease);
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.chip.active{background:var(--c-primary);color:#fff;}
.chip.active:hover{background:var(--c-primary-deep);color:#fff;}

/* ---------- Hero ---------- */
.page-hero{
  padding:52px 0 44px;
  border-bottom:1px solid var(--c-line);
  background:
    linear-gradient(180deg,rgba(239,237,231,.55) 0%,rgba(247,246,242,0) 62%);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  line-height:1.6;
  color:var(--c-ink-3);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line-strong);}
.crumb [aria-current]{color:var(--c-ink-2);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 380px;
  gap:48px;
  align-items:center;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-primary);
  margin-bottom:18px;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--c-accent);}
.page-hero h1{
  font-family:var(--font-display);
  font-size:clamp(1.9rem,3.4vw,2.75rem);
  line-height:1.25;
  font-weight:600;
  max-width:18em;
}
.hero-lead{
  margin-top:18px;
  font-size:16px;
  color:var(--c-ink-2);
  max-width:32em;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  margin-top:28px;
  font-size:14px;
  color:var(--c-ink-2);
}
.hero-meta .item{
  padding:0 18px;
  border-left:1px solid var(--c-line);
  line-height:1.5;
}
.hero-meta .item:first-child{padding-left:0;border-left:0;}
.hero-meta .num{
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:17px;
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.02em;
  margin-right:6px;
}
.hero-figure{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  box-shadow:var(--sh-1);
}
.hero-figure img{
  width:100%;
  aspect-ratio:16/6;
  object-fit:cover;
  transition:transform 360ms var(--ease);
}
.hero-figure:hover img{transform:scale(1.02);}

/* ---------- Sections ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(1.5rem,2.4vw,2.1rem);
  display:flex;
  align-items:center;
}
.section-head h2::before{
  content:"";
  display:inline-block;
  width:3px;
  height:.86em;
  border-radius:2px;
  background:var(--c-accent);
  margin-right:14px;
  flex:0 0 auto;
}
.section-desc{
  font-size:15px;
  color:var(--c-ink-2);
  max-width:520px;
  line-height:1.75;
}
.text-link{
  font-size:14.5px;
  color:var(--c-primary);
  border-bottom:1px solid var(--c-line-strong);
  padding-bottom:2px;
}
.text-link:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}

/* ---------- 分组看板 ---------- */
.board{border-top:1px solid var(--c-line);}
.board-row{
  display:grid;
  grid-template-columns:190px minmax(0,1fr) 230px;
  gap:36px;
  padding:34px 24px;
  margin:0 -24px;
  border-bottom:1px solid var(--c-line);
  transition:background-color 220ms var(--ease);
}
.board-row:hover{background:var(--c-surface-2);}
.board-name{
  font-family:var(--font-display);
  font-size:1.2rem;
  line-height:1.5;
  color:var(--c-primary);
}
.board-index{
  display:block;
  font-family:Inter,ui-sans-serif,system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--c-ink-3);
  margin-bottom:8px;
}
.board-points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 32px;
  align-content:start;
}
.board-points li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  line-height:1.75;
  color:var(--c-ink-2);
}
.board-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-accent);
  opacity:.85;
}
.board-note{
  align-self:start;
  font-size:14.5px;
  line-height:1.7;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-md);
  padding:14px 18px;
}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.scene-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px 26px;
  box-shadow:var(--sh-1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.scene-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:var(--c-line-strong);
}
.scene-tag{
  display:inline-block;
  font-size:13px;
  line-height:1.5;
  padding:4px 10px;
  border-radius:var(--r-xs);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  margin-bottom:18px;
}
.scene-card h3{
  font-size:1.12rem;
  line-height:1.5;
  margin-bottom:12px;
}
.scene-card p{
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
}
.scene-card.accent .scene-tag{background:var(--c-accent-soft);color:var(--c-accent);}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px 28px;
  align-items:start;
}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:0 24px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:22px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:500;
  line-height:1.65;
  color:var(--c-ink);
  cursor:pointer;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q .mark{
  position:relative;
  flex:0 0 auto;
  width:14px;
  height:14px;
  margin-top:7px;
}
.faq-q .mark::before,
.faq-q .mark::after{
  content:"";
  position:absolute;
  background:var(--c-ink-3);
  transition:transform 220ms var(--ease),background-color 220ms var(--ease);
}
.faq-q .mark::before{top:6px;left:0;width:14px;height:1.5px;}
.faq-q .mark::after{left:6px;top:0;width:1.5px;height:14px;}
.faq-q[aria-expanded="true"] .mark::before{background:var(--c-accent);}
.faq-q[aria-expanded="true"] .mark::after{transform:scaleY(0);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a-inner{
  padding:0 0 24px 16px;
  border-left:2px solid var(--c-accent);
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
}

/* ---------- CTA ---------- */
.cta-panel{
  background:var(--c-primary);
  border-radius:var(--r-lg);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-panel h2{
  font-family:var(--font-display);
  font-size:clamp(1.4rem,2.2vw,1.85rem);
  color:#fff;
  line-height:1.4;
}
.cta-panel p{
  margin-top:12px;
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.78);
  max-width:34em;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 相关分类 ---------- */
.related-cats{padding:72px 0 88px;}
.related-cats h2{
  font-family:var(--font-display);
  font-size:1.4rem;
  margin-bottom:22px;
}
.chip-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.chip-row .chip{font-size:14.5px;padding:9px 18px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-primary);
  color:rgba(255,255,255,.78);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:44px;
}
.footer-logo{
  display:inline-block;
  font-family:var(--font-display);
  font-size:20px;
  font-weight:600;
  color:#fff;
  letter-spacing:.01em;
}
.footer-logo:hover{color:#fff;}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  max-width:330px;
}
.footer-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap;}
.btn-foot{
  padding:8px 16px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:13.5px;
  line-height:1.4;
  cursor:pointer;
  transition:background-color 150ms var(--ease),border-color 150ms var(--ease);
}
.btn-foot:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.42);}
.btn-foot.ghost{background:transparent;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  color:rgba(255,255,255,.95);
  margin-bottom:16px;
}
.footer-col li a{
  display:block;
  padding:6px 0;
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
}
.footer-col li a:hover{color:#fff;}
.footer-bottom{
  margin-top:60px;
  padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
}

/* ---------- 滚动揭示 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity 360ms var(--ease),transform 360ms var(--ease);}
.js .reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .board-row{grid-template-columns:170px minmax(0,1fr) 200px;gap:28px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
}
@media (max-width:991.98px){
  .section{padding:68px 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{display:none;}
  .board-row{grid-template-columns:1fr;gap:18px;padding:30px 0;margin:0;}
  .board-note{max-width:460px;}
  .scene-grid{grid-template-columns:1fr;gap:20px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-panel{padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .page-hero{padding:36px 0 32px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;gap:16px;}
  .nav-top{padding:14px 0 10px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:32px;height:32px;font-size:15px;}
  .nav-chips{
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  }
  .hero-meta .item{padding:0 14px;}
  .hero-meta .num{font-size:16px;}
  .cta-panel{padding:30px 24px;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-light,.cta-actions .btn-ghost-light{flex:1 1 auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575.98px){
  .container,.container-fluid{padding-left:20px;padding-right:20px;}
  .page-hero h1{font-size:1.72rem;}
  .hero-meta{margin-top:22px;gap:10px 0;flex-direction:column;align-items:flex-start;}
  .hero-meta .item{padding:0;border-left:0;}
  .board-points{grid-template-columns:1fr;gap:12px;}
  .faq-item{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn-solid,.btn-outline{width:100%;}
  .nav-top .btn-solid{width:auto;padding:9px 16px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .js .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}