/* roulang page: index */
:root{
  --c-ink:#121A18;
  --c-ink-2:#1F2C29;
  --c-ink-3:#2E3D39;
  --c-accent:#C05B2B;
  --c-accent-deep:#9E4820;
  --c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-bg-2:#F3EFE8;
  --c-text:#1A1A1A;
  --c-muted:#6B6F6A;
  --c-faint:#9A9E99;
  --c-on-dark:#E7EAE7;
  --c-line:#E3DED5;
  --r-btn:6px;
  --r-card:10px;
  --r-img:8px;
  --r-badge:4px;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
}
img{max-width:100%;display:block}
a{color:var(--c-jade);text-decoration:none;transition:color .24s ease}
a:hover{color:var(--c-accent)}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--c-ink);margin:0;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:700}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:600}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{max-width:1200px;padding-left:32px;padding-right:32px;margin:0 auto}
.section{padding:var(--sec) 0}
.section--tight{padding:calc(var(--sec) * .68) 0}
.section--paper{background:var(--c-bg-2)}
.section--dark{background:var(--c-ink);color:var(--c-on-dark)}
.section--dark h2,.section--dark h3{color:#fff}
.hr-line{height:1px;background:var(--c-line);border:0;margin:0}

/* 公告条 */
.notice-bar{
  background:var(--c-ink);
  color:#CBD3CF;
  font-size:13px;
  letter-spacing:.02em;
  height:36px;
  display:flex;
  align-items:center;
}
.notice-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.notice-bar span b{color:var(--c-accent-soft);font-weight:600}
.notice-close{
  background:none;border:0;color:#8E9791;font-size:16px;line-height:1;cursor:pointer;padding:4px 6px;border-radius:var(--r-badge);
}
.notice-close:hover{color:var(--c-on-dark)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-bg);
  transition:background .28s ease, box-shadow .28s ease;
}
.site-header.is-stuck{background:var(--c-surface);box-shadow:var(--shadow-1);border-bottom:1px solid var(--c-line)}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:84px;transition:height .28s ease}
.site-header.is-stuck .nav-wrap{height:64px}
.nav-group{display:flex;align-items:center;gap:28px;font-size:15px;letter-spacing:.02em}
.nav-group--right{justify-content:flex-end}
.nav-group a{color:var(--c-text);position:relative;padding:6px 0;font-weight:400}
.nav-group a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-accent);
  transition:width .24s ease;
}
.nav-group a:hover{color:var(--c-accent);font-weight:600}
.nav-group a:hover::after,.nav-group a.is-active::after{width:100%}
.nav-group a.is-active{color:var(--c-accent);font-weight:600}
.brand{display:inline-flex;align-items:baseline;gap:8px;justify-self:center;white-space:nowrap}
.brand-mark{
  font-family:var(--font-display);font-size:26px;font-weight:700;color:var(--c-ink);letter-spacing:.04em;
}
.brand-text{font-family:var(--font-display);font-size:20px;font-weight:600;color:var(--c-ink);letter-spacing:.06em}
.site-header.is-stuck .brand-mark{font-size:22px}
.site-header.is-stuck .brand-text{font-size:18px}
.nav-cta{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  background:var(--c-accent);color:var(--c-on-dark)!important;font-weight:600;font-size:14px;letter-spacing:.02em;
  transition:background .2s ease, transform .2s ease;
}
.nav-cta:hover{background:var(--c-accent-deep);transform:translateY(-1px)}
.nav-cta::after{display:none}
.nav-toggle{
  display:none;justify-self:end;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-ink)}
.drawer{
  position:fixed;top:0;right:0;width:300px;max-width:88vw;height:100%;background:var(--c-surface);
  z-index:1060;transform:translateX(100%);transition:transform .2s ease;padding:28px 24px;overflow-y:auto;
  box-shadow:-16px 0 40px -24px rgba(18,26,24,.4);
}
.drawer.is-open{transform:translateX(0)}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(18,26,24,.5);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:1055;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer h4{font-size:13px;letter-spacing:.08em;color:var(--c-faint);font-weight:600;margin:22px 0 10px;font-family:var(--font-sans)}
.drawer h4:first-of-type{margin-top:0}
.drawer-links li a{display:block;padding:12px 0;border-bottom:1px solid var(--c-line);color:var(--c-text);font-size:15px;min-height:44px}
.drawer-links li a:hover{color:var(--c-accent)}
.drawer-close{position:absolute;top:18px;right:18px;background:none;border:0;font-size:22px;color:var(--c-muted);cursor:pointer}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  background:var(--c-accent);color:var(--c-on-dark);border:0;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-main:hover{background:var(--c-accent-deep);color:var(--c-on-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-main:active{transform:translateY(1px)}
.btn-main:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  background:transparent;color:var(--c-ink);border:1px solid var(--c-ink);border-radius:var(--r-btn);font-weight:600;font-size:15px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-on-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--c-ink);font-size:15px;
}
.link-arrow span.ar{transition:transform .24s ease}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow:hover span.ar{transform:translateX(4px)}

/* 徽章、标签 */
.badge-cat{
  display:inline-block;background:var(--c-accent-soft);color:var(--c-accent-deep);
  font-size:12px;line-height:1;padding:5px 10px;border-radius:var(--r-badge);font-weight:600;letter-spacing:.02em;
}
.badge-jade{background:#E4EDEA;color:var(--c-jade)}
.meta-line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.meta-line i{font-style:normal;color:var(--c-faint)}

/* Hero */
.hero{padding:84px 0 88px}
.hero-title{max-width:15em}
.hero-sub{font-size:17px;color:var(--c-muted);max-width:34em;margin-top:22px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:32px}
.hero-facts{display:flex;flex-wrap:wrap;gap:32px;margin-top:48px;padding-top:26px;border-top:1px solid var(--c-line)}
.hero-fact{display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--c-muted);min-width:150px}
.hero-fact b{font-family:var(--font-display);font-size:20px;color:var(--c-accent);font-weight:600}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden}
.hero-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;outline:1px solid rgba(18,26,24,.06);outline-offset:-1px}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(18,26,24,.35)}
.hero-float{
  position:absolute;right:20px;bottom:20px;background:var(--c-surface);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-2);z-index:2;min-width:180px;
}
.hero-float b{display:block;font-family:var(--font-display);font-size:30px;color:var(--c-ink);line-height:1.2}
.hero-float span{font-size:13px;color:var(--c-muted)}
.hero-caption{position:absolute;left:22px;top:22px;z-index:2;color:#F6F3EE;font-size:13px;letter-spacing:.04em}

/* 区块标题行 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head p{color:var(--c-muted);font-size:15px;margin-top:12px;max-width:52em}

/* 目录索引 */
.index-list{border-top:1px solid var(--c-line)}
.index-row{
  display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:24px;
  min-height:104px;padding:20px 12px 20px 0;border-bottom:1px solid var(--c-line);
  transition:background .2s ease;
}
.index-row:hover{background:var(--c-bg-2)}
.index-num{font-family:var(--font-display);font-size:clamp(36px,4vw,56px);color:var(--c-ink-3);line-height:1;font-weight:600}
.index-row:hover .index-num{color:var(--c-accent)}
.index-body h3{font-size:19px;margin-bottom:6px}
.index-row:hover .index-body h3{color:var(--c-accent)}
.index-body p{font-size:14px;color:var(--c-muted);margin:0;line-height:1.7}
.index-go{color:var(--c-faint);transition:transform .2s ease,color .2s ease;font-size:18px}
.index-row:hover .index-go{transform:translateX(6px);color:var(--c-accent)}

/* 卡片 */
.card-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  height:100%;display:flex;flex-direction:column;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card-item:hover{transform:translateY(-2px);border-color:var(--c-accent);box-shadow:var(--shadow-2)}
.card-item img{width:100%;aspect-ratio:4/3;object-fit:cover}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.45}
.card-item:hover .card-body h3{color:var(--c-accent)}
.card-body p{font-size:14px;color:var(--c-muted);line-height:1.75;margin:0}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}
.card-item--wide{display:grid;grid-template-columns:1.15fr 1fr;align-items:stretch}
.card-item--wide img{aspect-ratio:auto;height:100%;min-height:280px}
.card-item--wide .card-body{padding:32px;gap:16px}
.card-item--wide h3{font-size:24px}
.card-mini{
  border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);padding:22px;
  display:block;height:100%;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.card-mini:hover{border-color:var(--c-accent);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.card-mini h3{font-size:17px;line-height:1.5;margin:10px 0 8px}
.card-mini:hover h3{color:var(--c-accent)}
.card-mini p{font-size:14px;color:var(--c-muted);margin:0}
.row-line{
  display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:14px;
  padding:18px 0;border-bottom:1px solid var(--c-line);
}
.row-line h3{font-size:17px}
.row-line:hover h3{color:var(--c-accent)}
.row-line .meta-line{white-space:nowrap}

/* 横向条目 */
.h-entry{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--c-line)}
.h-entry .idx-sm{font-family:var(--font-display);font-size:14px;color:var(--c-accent);min-width:28px;padding-top:4px}
.h-entry h3{font-size:16px;line-height:1.5;margin-bottom:4px}
.h-entry:hover h3{color:var(--c-accent)}
.h-entry p{font-size:13px;color:var(--c-muted);margin:0}

/* 统计条 */
.stat-strip{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-cell{padding:40px 24px;border-right:1px solid var(--c-line);text-align:left}
.stat-cell:last-child{border-right:0}
.stat-cell b{display:block;font-family:var(--font-display);font-size:clamp(32px,3.6vw,46px);color:var(--c-ink);line-height:1.1}
.stat-cell span{font-size:13px;color:var(--c-muted);display:block;margin-top:8px}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;
  padding:20px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);
  font-family:var(--font-sans);cursor:pointer;min-height:44px;
}
.faq-q:hover{color:var(--c-accent)}
.faq-q .sign{font-family:var(--font-sans);color:var(--c-accent);font-size:18px;line-height:1;transition:transform .28s ease}
.faq-q[aria-expanded="true"]{color:var(--c-accent)}
.faq-q .sign{transform:rotate(0)}
.faq-q[aria-expanded="true"] .sign{transform:rotate(180deg)}
.faq-a{max-width:72ch;color:var(--c-muted);font-size:15px;padding-bottom:20px}
.faq-a ol{list-style:decimal;padding-left:20px}
.faq-a li{margin-bottom:6px}

/* 空态 */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);text-align:center;padding:32px;
}
.empty-state .ico{width:48px;height:48px;border:1px solid var(--c-line);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--c-faint)}
.empty-state h3{font-size:17px}
.empty-state p{font-size:14px;color:var(--c-muted);margin:0}

/* 延伸阅读 */
.read-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.read-item{padding:18px 0 18px 18px;border-left:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.read-item:hover{border-left-color:var(--c-accent)}
.read-item h3{font-size:16px;line-height:1.5;margin-bottom:6px}
.read-item:hover h3{color:var(--c-accent)}

/* CTA 条 */
.cta-strip{
  background:var(--c-bg-2);border-radius:var(--r-card);padding:28px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-strip h3{font-size:20px;margin-bottom:6px}
.cta-strip p{font-size:14px;color:var(--c-muted);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.act-btn{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-btn);color:var(--c-ink);font-size:14px;font-weight:600;cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.act-btn:hover{border-color:var(--c-accent);color:var(--c-accent)}
.act-btn.is-done{background:var(--c-accent-soft);border-color:var(--c-accent);color:var(--c-accent-deep)}

/* 页脚 */
.site-footer{background:var(--c-ink);color:#CFD6D2;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.site-footer h4{font-family:var(--font-sans);font-size:14px;letter-spacing:.08em;color:var(--c-faint);font-weight:600;margin-bottom:18px}
.site-footer p{font-size:14px;line-height:1.8;color:#B9C1BC}
.site-footer a{color:#CFD6D2;font-size:14px}
.site-footer a:hover{color:var(--c-accent)}
.f-brand{display:inline-flex;align-items:baseline;gap:8px;margin-bottom:16px}
.f-brand .brand-mark,.f-brand .brand-text{color:#fff}
.f-links li{margin-bottom:12px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(231,234,231,.14);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;font-size:13px;color:#98A19C;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:#98A19C}

/* 动效 */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
.fade-up.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .fade-up{opacity:1;transform:none}
}

/* 响应式 */
@media (max-width:1199.98px){
  :root{--sec:88px}
}
@media (max-width:991.98px){
  :root{--sec:72px}
  .nav-wrap{height:72px;grid-template-columns:44px 1fr 44px}
  .nav-group{display:none}
  .nav-toggle{display:flex;grid-column:3}
  .brand{grid-column:2}
  .brand-mark{font-size:22px}
  .brand-text{font-size:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--c-line)}
}
@media (max-width:767.98px){
  :root{--sec:56px}
  .container{padding-left:18px;padding-right:18px}
  body{font-size:15px}
  .hero{padding:52px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:16px}
  .btn-main,.btn-ghost{width:100%}
  .hero-facts{gap:20px}
  .card-item--wide{grid-template-columns:1fr}
  .card-item--wide img{min-height:200px;aspect-ratio:4/3}
  .index-row{grid-template-columns:56px 1fr;gap:16px;min-height:88px}
  .index-num{font-size:32px}
  .index-go{display:none}
  .read-grid{grid-template-columns:1fr;gap:0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px}
  .cta-strip{padding:22px;flex-direction:column;align-items:stretch}
  .cta-actions{flex-direction:column}
  .act-btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--c-line);padding:28px 0}
  .stat-cell:last-child{border-bottom:0}
  .hero-float{position:static;margin:0 0 0;border-radius:0;box-shadow:none;background:var(--c-surface);padding:16px 20px}
  .row-line{grid-template-columns:1fr;gap:6px}
}
@media (max-width:519.98px){
  .hero-title{font-size:clamp(28px,8vw,34px)}
  .brand-text{font-size:16px}
  .brand-mark{font-size:20px}
}

/* roulang page: category1 */
:root{
  --c-ink:#121A18;
  --c-ink-2:#1F2C29;
  --c-ink-3:#2E3D39;
  --c-accent:#C05B2B;
  --c-accent-deep:#9E4820;
  --c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-bg-2:#F3EFE8;
  --c-text:#1A1A1A;
  --c-muted:#6B6F6A;
  --c-faint:#9A9E99;
  --c-on-dark:#E7EAE7;
  --c-line:#E3DED5;
  --c-line-dark:rgba(231,234,231,.14);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --radius-btn:6px;
  --radius-card:10px;
  --radius-img:8px;
  --radius-badge:4px;
  --section:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .24s ease}
a:hover{color:var(--c-accent)}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;color:var(--c-ink);letter-spacing:-0.01em}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:700}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:600}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:var(--section) 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--c-bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head p{margin:10px 0 0;color:var(--c-muted);font-size:15px;max-width:62ch}
.eyebrow{
  font-size:13px;letter-spacing:.14em;color:var(--c-jade);
  text-transform:uppercase;font-weight:600;margin-bottom:12px;display:block;
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-ink);white-space:nowrap}
.link-arrow span{transition:transform .24s ease}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background .24s ease,box-shadow .24s ease,height .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--shadow-1)}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:84px;gap:24px;transition:height .24s ease;
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-group{display:flex;align-items:center;gap:28px;margin:0}
.nav-group--left{justify-content:flex-start}
.nav-group--right{justify-content:flex-end}
.nav-group a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--c-text);
  padding:6px 0;font-weight:500;
}
.nav-group a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width .24s ease;
}
.nav-group a:hover{color:var(--c-accent)}
.nav-group a:hover::after{width:100%}
.nav-group a.is-active{font-weight:600;color:var(--c-ink)}
.nav-group a.is-active::after{width:100%}
.nav-cta{
  border:1px solid var(--c-ink);border-radius:999px;padding:9px 20px !important;
  color:var(--c-ink);font-weight:600;
}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--c-ink);color:var(--c-on-dark) !important}
.brand{display:flex;align-items:baseline;gap:8px;justify-self:center;white-space:nowrap}
.brand-mark{
  font-family:var(--font-display);font-size:26px;font-weight:700;color:var(--c-ink);
  letter-spacing:.02em;
}
.brand-text{font-size:16px;letter-spacing:.08em;color:var(--c-ink-3)}
.brand:hover .brand-mark{color:var(--c-accent)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--radius-btn);padding:11px 10px;justify-self:end;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--c-ink);margin:4px 0;border-radius:2px}

/* drawer */
.mobile-drawer{position:fixed;inset:0;z-index:1040;visibility:hidden;pointer-events:none}
.mobile-drawer .drawer-mask{position:absolute;inset:0;background:rgba(18,26,24,.45);opacity:0;transition:opacity .2s ease}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:300px;max-width:100%;
  background:var(--c-surface);padding:28px 24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;gap:8px;
}
body.drawer-open .mobile-drawer{visibility:visible;pointer-events:auto}
body.drawer-open .mobile-drawer .drawer-mask{opacity:1}
body.drawer-open .drawer-panel{transform:translateX(0)}
.drawer-panel .d-group{font-size:13px;letter-spacing:.08em;color:var(--c-faint);margin:18px 0 8px}
.drawer-panel a.d-link{
  display:block;padding:12px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;min-height:44px;
}
.drawer-panel a.d-link.is-active{color:var(--c-accent);font-weight:600}
.drawer-panel .d-cta{
  margin-top:22px;display:block;text-align:center;background:var(--c-accent);color:var(--c-on-dark);
  border-radius:var(--radius-btn);padding:13px 18px;font-weight:600;
}
.drawer-panel .d-cta:hover{background:var(--c-accent-deep);color:var(--c-on-dark)}
.drawer-panel .d-note{font-size:13px;color:var(--c-muted);margin-top:20px;line-height:1.7}

/* ---------- buttons ---------- */
.btn-ink, .btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;
}
.btn-ink{background:var(--c-accent);color:var(--c-on-dark)}
.btn-ink:hover{background:var(--c-accent-deep);color:var(--c-on-dark);transform:translateY(-1px)}
.btn-ink:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-on-dark)}
.btn-ink:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px}

/* ---------- badges ---------- */
.badge-tag{
  display:inline-block;font-size:12px;line-height:1.6;padding:4px 10px;
  border-radius:var(--radius-badge);background:var(--c-accent-soft);color:var(--c-accent-deep);font-weight:600;
}
.badge-tag--jade{background:rgba(47,93,87,.1);color:var(--c-jade)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-muted)}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--c-faint);display:inline-block}

/* ---------- breadcrumb ---------- */
.crumb{padding-top:32px;font-size:13px;color:var(--c-muted)}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-accent)}
.crumb .sep{color:var(--c-faint)}
.crumb .current{color:var(--c-muted)}

/* ---------- hero ---------- */
.cat-hero{position:relative;margin-top:24px;border-radius:var(--radius-img);overflow:hidden;border:1px solid rgba(18,26,24,.06)}
.cat-hero__media{position:relative;aspect-ratio:21/9;min-height:300px}
.cat-hero__media img{width:100%;height:100%;object-fit:cover}
.cat-hero__media::after{content:"";position:absolute;inset:0;background:rgba(18,26,24,.5)}
.cat-hero__body{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:48px;color:var(--c-on-dark);
}
.cat-hero__body h1{color:#fff;max-width:20ch}
.cat-hero__body .lead{margin-top:16px;max-width:56ch;color:rgba(231,234,231,.88);font-size:16px}
.cat-hero__body .meta-row{margin-top:22px;color:rgba(231,234,231,.75)}
.cat-hero__body .meta-row .dot{background:rgba(231,234,231,.5)}
.cat-hero__body .badge-tag{background:rgba(242,227,216,.16);color:#F2E3D8}
.hero-divider{height:1px;background:var(--c-line);margin-top:40px}

/* ---------- toc index ---------- */
.index-list{border-top:1px solid var(--c-line)}
.index-row{
  display:grid;grid-template-columns:96px 1fr 32px;align-items:center;gap:24px;
  min-height:104px;padding:22px 12px;border-bottom:1px solid var(--c-line);
  transition:background .2s ease;position:relative;
}
.index-row:hover{background:var(--c-bg-2)}
.index-row .num{
  font-family:var(--font-display);font-size:56px;line-height:1;color:var(--c-ink-3);
  transition:color .2s ease;font-weight:700;
}
.index-row:hover .num{color:var(--c-accent)}
.index-row h3{transition:color .2s ease}
.index-row:hover h3{color:var(--c-accent)}
.index-row .desc{font-size:14px;color:var(--c-muted);line-height:1.7;margin-top:6px}
.index-row .go{font-size:18px;color:var(--c-faint);transition:transform .2s ease,color .2s ease;text-align:right}
.index-row:hover .go{transform:translateX(6px);color:var(--c-accent)}
.side-stack{display:flex;flex-direction:column;gap:24px;position:sticky;top:104px}
.mini-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.mini-card:hover{transform:translateY(-2px);border-color:var(--c-accent);box-shadow:var(--shadow-2)}
.mini-card__img{aspect-ratio:4/3;background:var(--c-bg-2)}
.mini-card__img img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid rgba(18,26,24,.06)}
.mini-card__body{padding:24px}
.mini-card__body h3{margin:12px 0 8px}
.mini-card__body p{font-size:14px;color:var(--c-muted);margin-bottom:14px}

/* ---------- checklist ---------- */
.check-list{border-top:1px solid var(--c-line)}
.check-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--c-line)}
.check-item .mark{
  flex:0 0 auto;width:22px;height:22px;margin-top:5px;border:1px solid var(--c-jade);border-radius:50%;
  position:relative;
}
.check-item .mark::after{
  content:"";position:absolute;left:6px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--c-jade);
}
.check-item h3{font-size:17px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--c-muted)}
.note-card{
  background:var(--c-bg-2);border-left:3px solid var(--c-accent);border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:24px 28px;
}
.note-card h3{font-size:17px;margin-bottom:10px}
.note-card p{font-size:14px;color:var(--c-muted)}
.figure-block{border-radius:var(--radius-img);overflow:hidden;border:1px solid rgba(18,26,24,.06);aspect-ratio:3/2;background:var(--c-bg-2)}
.figure-block img{width:100%;height:100%;object-fit:cover}

/* ---------- faq ---------- */
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq .accordion-item:first-of-type{border-top:1px solid var(--c-line)}
.faq .accordion-button{
  background:transparent;padding:20px 44px 20px 0;font-size:17px;font-weight:600;
  color:var(--c-ink);font-family:var(--font-display);box-shadow:none;
}
.faq .accordion-button::after{
  display:none;
}
.faq .accordion-button .sym{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-size:18px;color:var(--c-muted);transition:transform .24s ease,color .24s ease;line-height:1;
}
.faq .accordion-button:not(.collapsed){color:var(--c-accent)}
.faq .accordion-button:not(.collapsed) .sym{transform:translateY(-50%) rotate(180deg);color:var(--c-accent)}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px}
.faq .accordion-body{padding:0 0 22px;color:var(--c-muted);font-size:15px;line-height:1.85;max-width:72ch}
.faq .accordion-body ol{list-style:decimal;padding-left:20px}
.faq .accordion-body li{margin-bottom:8px}

/* ---------- related categories ---------- */
.cat-switch{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.cat-switch a{
  padding:28px 24px;border-right:1px solid var(--c-line);font-size:15px;font-weight:600;
  display:flex;flex-direction:column;gap:8px;transition:background .2s ease,color .2s ease;
}
.cat-switch a:last-child{border-right:0}
.cat-switch a span{font-size:13px;color:var(--c-muted);font-weight:400}
.cat-switch a:hover{background:var(--c-bg-2);color:var(--c-accent)}
.cat-switch a.is-current{color:var(--c-faint);pointer-events:none;background:var(--c-bg-2)}
.cat-switch a.is-current span{color:var(--c-faint)}

/* ---------- cta bar ---------- */
.cta-bar{
  background:var(--c-bg-2);border-radius:var(--radius-card);padding:28px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-bar h3{font-size:19px;margin-bottom:6px}
.cta-bar p{font-size:14px;color:var(--c-muted);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;
  border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;color:var(--c-ink);cursor:pointer;transition:all .2s ease;
}
.chip:hover{border-color:var(--c-accent);color:var(--c-accent)}
.chip.is-done{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-on-dark)}
.toast-line{
  margin-top:16px;font-size:13px;color:var(--c-jade);min-height:20px;opacity:0;transition:opacity .24s ease;
}
.toast-line.show{opacity:1}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#CFD6D2;padding:72px 0 32px;margin-top:104px}
.site-footer h4{font-family:var(--font-sans);font-size:14px;letter-spacing:.08em;color:var(--c-faint);margin-bottom:18px;font-weight:600}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.site-footer p{font-size:14px;line-height:1.8;color:#AEB6B1}
.f-brand{display:flex;align-items:baseline;gap:8px;margin-bottom:16px}
.f-brand .brand-mark{color:#fff;font-size:24px}
.f-brand .brand-text{color:#CFD6D2;font-size:15px}
.f-links li{margin-bottom:10px}
.f-links a{font-size:14px;color:#CFD6D2}
.f-links a:hover{color:var(--c-accent)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--c-line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8E9793;margin:0}

/* ---------- motion ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
.fade-up.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .fade-up{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 28px}
  :root{--section:88px}
}
@media (max-width:991px){
  :root{--section:72px}
  .nav-group{display:none}
  .nav-toggle{display:block}
  .nav-wrap{grid-template-columns:1fr auto 1fr;height:72px}
  .site-header.is-scrolled .nav-wrap{height:64px}
  .brand-mark{font-size:22px}
  .brand-text{font-size:13px}
  .cat-hero__body{padding:32px}
  .cat-hero__media{aspect-ratio:16/9}
  .side-stack{position:static;flex-direction:row;flex-wrap:wrap}
  .side-stack .mini-card{flex:1 1 260px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--section:56px}
  .container{padding:0 18px}
  .index-row{grid-template-columns:64px 1fr 24px;gap:14px;min-height:88px;padding:18px 6px}
  .index-row .num{font-size:38px}
  .cat-hero__media{aspect-ratio:4/3;min-height:340px}
  .cat-hero__body{padding:24px}
  .cat-hero__body .lead{font-size:15px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-actions{width:100%}
  .cta-actions .chip{flex:1 1 auto;justify-content:center}
  .cat-switch{grid-template-columns:1fr}
  .cat-switch a{border-right:0;border-bottom:1px solid var(--c-line)}
  .cat-switch a:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .drawer-panel{width:100%}
  body{font-size:15px}
}
@media (max-width:520px){
  .brand-text{display:none}
  .index-row .desc{font-size:13px}
}

/* roulang page: article */
:root{
  --c-ink:#121A18;--c-ink-2:#1F2C29;--c-ink-3:#2E3D39;
  --c-accent:#C05B2B;--c-accent-deep:#9E4820;--c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;--c-surface:#FFFFFF;--c-bg-2:#F3EFE8;
  --c-text:#1A1A1A;--c-muted:#6B6F6A;--c-faint:#9A9E99;--c-on-dark:#E7EAE7;
  --c-line:#E3DED5;--c-line-dark:rgba(231,234,231,.14);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --r-btn:6px;--r-card:10px;--r-img:8px;--r-badge:4px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font-sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-display);color:var(--c-ink);line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:70;background:var(--c-bg);border-bottom:1px solid transparent;transition:background .3s ease,border-color .3s ease,box-shadow .3s ease}
.site-header.is-stuck{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--shadow-1)}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;height:84px;transition:height .3s ease}
.site-header.is-stuck .nav-wrap{height:64px}
.nav-group{display:flex;align-items:center;gap:28px}
.nav-group--right{justify-content:flex-end}
.nav-group a{position:relative;font-size:15px;letter-spacing:.02em;color:var(--c-text);padding:6px 0;transition:color .24s ease}
.nav-group a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-accent);transition:width .24s ease}
.nav-group a:hover{color:var(--c-accent)}
.nav-group a:hover::after{width:100%}
.nav-group a.is-active{font-weight:600;color:var(--c-ink)}
.nav-group a.is-active::after{width:100%}
.nav-group a.nav-cta{background:var(--c-accent);color:var(--c-on-dark);padding:10px 20px;border-radius:999px;font-weight:600;font-size:14px}
.nav-group a.nav-cta::after{display:none}
.nav-group a.nav-cta:hover{background:var(--c-accent-deep);color:var(--c-on-dark)}
.brand{display:flex;align-items:baseline;gap:6px;justify-self:center;white-space:nowrap}
.brand-mark{font-family:var(--font-display);font-weight:700;font-size:25px;color:var(--c-ink);letter-spacing:-.02em;line-height:1}
.brand-text{font-family:var(--font-display);font-size:17px;letter-spacing:.08em;color:var(--c-ink)}
.nav-toggle{display:none;width:44px;height:44px;border:0;background:transparent;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--c-ink);transition:transform .24s ease,opacity .24s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-overlay{position:fixed;inset:0;background:rgba(18,26,24,.45);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:80}
body.nav-open .drawer-overlay{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;background:var(--c-surface);z-index:90;transform:translateX(102%);transition:transform .2s ease;overflow-y:auto;padding:28px 24px 40px;box-shadow:var(--shadow-2)}
body.nav-open .mobile-drawer{transform:translateX(0)}
.drawer-head{display:flex;align-items:baseline;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:20px}
.drawer-title{font-size:13px;letter-spacing:.08em;color:var(--c-faint);margin:18px 0 8px;font-family:var(--font-sans)}
.drawer-links li{margin-bottom:2px}
.drawer-links a{display:block;padding:12px 0;font-size:15px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.drawer-links a:hover{color:var(--c-accent)}
.drawer-foot{margin-top:28px;padding-top:20px;border-top:1px solid var(--c-line)}
.drawer-foot p{margin-top:12px;font-size:13px;color:var(--c-muted);line-height:1.7}

/* ---------- buttons ---------- */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border:0;border-radius:var(--r-btn);background:var(--c-accent);color:var(--c-on-dark);font-size:15px;font-weight:600;cursor:pointer;transition:background .24s ease,transform .24s ease,box-shadow .24s ease}
.btn-primary:hover{background:var(--c-accent-deep);transform:translateY(-1px);color:var(--c-on-dark)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border:1px solid var(--c-ink);border-radius:var(--r-btn);background:transparent;color:var(--c-ink);font-size:15px;font-weight:600;cursor:pointer;transition:background .24s ease,color .24s ease}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-on-dark)}
.btn-primary:focus-visible,.btn-ghost:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-ink)}
.link-arrow i{font-size:14px;transition:transform .24s ease}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.page-top{padding-top:84px}
.crumb-bar{padding:32px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-faint);font-family:var(--font-sans)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li::after{content:"/";color:var(--c-line)}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-accent)}
.crumb .current{color:var(--c-muted);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article hero ---------- */
.article-hero{background:var(--c-ink);color:var(--c-on-dark);margin-top:28px;padding:56px 0 64px;position:relative;overflow:hidden}
.article-hero::after{content:"";position:absolute;inset:0;background:rgba(18,26,24,.35);pointer-events:none}
.article-hero .container{position:relative;z-index:2}
.badge-cat{display:inline-block;padding:4px 10px;border-radius:var(--r-badge);background:var(--c-accent-soft);color:var(--c-accent-deep);font-size:12px;letter-spacing:.04em;font-weight:600}
.article-title{color:#fff;font-size:clamp(30px,4.4vw,52px);font-weight:700;letter-spacing:-.01em;line-height:1.18;margin:20px 0 0;max-width:22ch}
.article-title.is-long{font-size:clamp(24px,3.2vw,38px);max-width:26ch}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:22px;font-size:13px;color:rgba(231,234,231,.72)}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(231,234,231,.4)}
.hero-meta .num{font-family:system-ui,-apple-system,sans-serif;letter-spacing:.02em}
.share-group{display:flex;align-items:center;gap:10px;margin-top:26px}
.share-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:44px;height:44px;padding:0 16px;border:1px solid var(--c-line-dark);border-radius:var(--r-btn);background:transparent;color:var(--c-on-dark);font-size:14px;cursor:pointer;transition:border-color .24s ease,background .24s ease}
.share-btn:hover{border-color:var(--c-accent);background:rgba(192,91,43,.14)}
.share-btn.is-done{border-color:var(--c-accent);color:var(--c-accent-soft)}

/* ---------- cover ---------- */
.article-cover{margin:-40px 0 0;position:relative;z-index:3}
.article-cover .frame{aspect-ratio:21/9;border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(18,26,24,.06);background:var(--c-bg-2);box-shadow:var(--shadow-2)}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 8px}
.article-body{max-width:780px;font-size:16px;line-height:1.85}
.article-body p{margin:0 0 18px;color:var(--c-text)}
.article-body h2{font-size:clamp(22px,2.4vw,28px);font-weight:600;margin:46px 0 18px;padding-left:14px;border-left:3px solid var(--c-accent);line-height:1.35}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--c-ink-3)}
.article-body ul{margin:0 0 18px}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:10px;color:var(--c-muted)}
.article-body ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:1px;background:var(--c-accent)}
.article-body ol{margin:0 0 18px;padding-left:24px;list-style:decimal;color:var(--c-muted)}
.article-body ol li{margin-bottom:10px;padding-left:4px}
.article-body blockquote{margin:26px 0;padding:18px 22px;border-left:3px solid var(--c-accent);background:var(--c-bg-2);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--c-muted)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.article-body th{background:var(--c-bg-2);color:var(--c-jade);text-align:left;padding:12px 14px;font-weight:600;border-bottom:1px solid var(--c-line)}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);color:var(--c-muted)}
.article-body img{border-radius:var(--r-img);border:1px solid rgba(18,26,24,.06);margin:26px 0}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0 0 10px}
.article-body figcaption{font-size:13px;color:var(--c-faint)}
.article-body a{color:var(--c-jade);border-bottom:1px solid transparent;transition:color .24s ease,border-color .24s ease}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}
.article-body strong{font-weight:600;color:var(--c-ink)}

/* ---------- TOC ---------- */
.article-aside .toc-card{position:sticky;top:104px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow-1)}
.toc-head{display:flex;align-items:center;justify-content:space-between;font-size:13px;letter-spacing:.08em;color:var(--c-faint);padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:14px}
.toc-list{max-height:420px;overflow-y:auto}
.toc-list li{margin-bottom:2px}
.toc-list a{display:block;padding:8px 0 8px 12px;font-size:14px;color:var(--c-muted);border-left:2px solid transparent;line-height:1.6;transition:color .24s ease,border-color .24s ease,padding-left .24s ease}
.toc-list a:hover{color:var(--c-accent);border-left-color:var(--c-accent);padding-left:16px}
.toc-list a.is-current{color:var(--c-ink);font-weight:600;border-left-color:var(--c-accent)}
.aside-note{margin-top:24px;background:var(--c-bg-2);border-radius:var(--r-card);padding:20px 22px}
.aside-note h4{font-size:15px;margin-bottom:8px}
.aside-note p{font-size:13px;color:var(--c-muted);line-height:1.7}
.aside-note .link-arrow{margin-top:12px;font-size:14px}

/* ---------- empty ---------- */
.article-empty{max-width:640px;padding:40px 0 56px}
.article-empty .ico{width:48px;height:48px;border:1px solid var(--c-line);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--c-faint);margin-bottom:20px}
.article-empty h2{font-size:22px;margin-bottom:10px}
.article-empty p{color:var(--c-muted);margin-bottom:24px}

/* ---------- tags + prev next ---------- */
.article-foot{padding:8px 0 0}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:28px;border-top:1px solid var(--c-line)}
.tag{display:inline-block;padding:4px 10px;border-radius:var(--r-badge);background:var(--c-accent-soft);color:var(--c-accent-deep);font-size:12.5px}
.tag--jade{background:rgba(47,93,87,.1);color:var(--c-jade)}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.pn-item{display:block;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px 24px;background:var(--c-surface);transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease}
.pn-item:hover{border-color:var(--c-accent);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.pn-item span{display:block;font-size:13px;color:var(--c-faint);margin-bottom:8px}
.pn-item strong{display:block;font-family:var(--font-display);font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5}
.pn-item:hover strong{color:var(--c-accent)}
.back-link{margin-top:28px}

/* ---------- related ---------- */
.related{padding:104px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:600}
.sec-head p{margin-top:10px;font-size:14px;color:var(--c-muted);max-width:52ch}
.card-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:border-color .24s ease,transform .24s ease,box-shadow .24s ease;height:100%}
.card:hover{border-color:var(--c-accent);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--c-bg-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:24px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:19px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover h3{color:var(--c-accent)}
.card .desc{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-faint)}

/* ---------- save cta ---------- */
.save-wrap{padding:104px 0 0}
.save-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px 32px}
.save-bar h3{font-size:20px;font-weight:600;margin-bottom:6px}
.save-bar p{font-size:14px;color:var(--c-muted)}
.save-actions{display:flex;flex-wrap:wrap;gap:12px}
.save-actions button{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);color:var(--c-ink);font-size:14px;cursor:pointer;transition:border-color .24s ease,color .24s ease,background .24s ease}
.save-actions button:hover{border-color:var(--c-accent);color:var(--c-accent)}
.save-actions button.is-done{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-on-dark)}
.toast{position:fixed;left:50%;bottom:36px;transform:translate(-50%,20px);background:var(--c-ink);color:var(--c-on-dark);font-size:14px;padding:12px 22px;border-radius:var(--r-btn);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s ease;z-index:120}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#CFD6D2;margin-top:104px;padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.f-brand{display:flex;align-items:baseline;gap:6px;margin-bottom:16px}
.f-brand .brand-mark{color:#fff;font-size:22px}
.f-brand .brand-text{color:#fff;font-size:16px}
.site-footer p{line-height:1.8;color:#CFD6D2}
.site-footer h4{font-family:var(--font-sans);font-size:14px;letter-spacing:.08em;color:var(--c-faint);font-weight:500;margin-bottom:16px}
.f-links li{margin-bottom:10px}
.f-links a{color:#CFD6D2;transition:color .24s ease}
.f-links a:hover{color:var(--c-accent)}
.footer-bottom{margin-top:56px;border-top:1px solid var(--c-line-dark);padding:24px 0 32px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--c-faint)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-title{max-width:100%}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .nav-wrap{grid-template-columns:44px 1fr 44px;height:64px;gap:12px}
  .header-placeholder .nav-wrap{height:64px}
  .nav-group{display:none}
  .nav-toggle{display:flex;order:3}
  .brand{order:2;justify-self:center}
  .brand-mark{font-size:22px}
  .brand-text{font-size:15px}
  .page-top{padding-top:64px}
  .article-hero{padding:40px 0 56px}
  .article-body{max-width:100%}
  .article-aside{margin-bottom:36px}
  .article-aside .toc-card{position:static}
  .toc-list{max-height:220px}
  .card-list{grid-template-columns:repeat(2,1fr)}
  .related,.save-wrap{padding-top:72px}
  .site-footer{margin-top:72px;padding-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .article-cover{margin-top:-32px}
  .article-cover .frame{aspect-ratio:16/9}
  .article-hero{padding:32px 0 48px}
  .article-main{padding:40px 0 0}
  .pn-grid{grid-template-columns:1fr}
  .save-bar{flex-direction:column;align-items:flex-start;padding:24px}
  .save-actions{width:100%}
  .save-actions button{flex:1 1 40%}
  .card-list{grid-template-columns:1fr}
  .related,.save-wrap{padding-top:56px}
  .site-footer{margin-top:56px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;font-size:13px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:520px){
  .brand-text{display:none}
  .article-title{font-size:26px}
  .article-title.is-long{font-size:23px}
  .share-btn span{display:none}
  .share-btn{min-width:44px;padding:0}
}

/* roulang page: category2 */
:root{
  --c-ink:#121A18;
  --c-ink-2:#1F2C29;
  --c-ink-3:#2E3D39;
  --c-accent:#C05B2B;
  --c-accent-deep:#9E4820;
  --c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;
  --c-bg-2:#F3EFE8;
  --c-surface:#FFFFFF;
  --c-text:#1A1A1A;
  --c-muted:#6B6F6A;
  --c-faint:#9A9E99;
  --c-on-dark:#E7EAE7;
  --c-line:#E3DED5;
  --c-line-dark:rgba(231,234,231,.14);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --r-btn:6px;
  --r-card:10px;
  --r-img:8px;
  --r-badge:4px;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --sp-section:104px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);letter-spacing:-.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.hidden-scroll-lock{overflow:hidden;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{background:var(--c-surface);border-bottom-color:var(--c-line);box-shadow:var(--shadow-1);}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:84px;transition:height .24s ease;
}
.site-header.is-scrolled .nav-wrap{height:64px;}
.nav-group{display:flex;align-items:center;gap:28px;}
.nav-group--left{justify-content:flex-start;}
.nav-group--right{justify-content:flex-end;}
.nav-group a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--c-text);
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-group a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-accent);transition:width .24s ease;
}
.nav-group a:hover{color:var(--c-accent);}
.nav-group a:hover::after{width:100%;}
.nav-group a.is-active{font-weight:600;color:var(--c-text);}
.nav-group a.is-active::after{width:100%;}
.nav-group a.nav-cta{
  padding:10px 22px;border-radius:999px;background:var(--c-accent);color:var(--c-on-dark);
  font-weight:600;font-size:14px;letter-spacing:.04em;transition:background .2s ease,transform .2s ease;
}
.nav-group a.nav-cta::after{display:none;}
.nav-group a.nav-cta:hover{background:var(--c-accent-deep);color:var(--c-on-dark);transform:translateY(-1px);}
.brand{
  display:inline-flex;align-items:baseline;gap:8px;justify-self:center;
  font-family:var(--font-display);font-size:22px;color:var(--c-ink);white-space:nowrap;
}
.brand-mark{color:var(--c-accent);font-weight:700;letter-spacing:-.02em;}
.brand-text{font-weight:600;}
.nav-toggle{
  display:none;justify-self:end;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
.nav-scrim{
  position:fixed;inset:0;background:rgba(18,26,24,.45);opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;z-index:1040;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:100%;
  background:var(--c-surface);z-index:1050;padding:28px 26px 36px;
  transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;gap:24px;overflow-y:auto;
  border-left:1px solid var(--c-line);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head .brand{justify-self:flex-start;font-size:19px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--c-line);background:transparent;border-radius:var(--r-btn);
  color:var(--c-ink);font-size:18px;line-height:1;cursor:pointer;
}
.drawer-group-title{font-size:13px;letter-spacing:.08em;color:var(--c-faint);font-weight:600;margin-bottom:10px;}
.drawer-list li{margin-bottom:4px;}
.drawer-list a{
  display:block;padding:12px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;color:var(--c-text);transition:color .2s ease,padding-left .2s ease;
}
.drawer-list a:hover{color:var(--c-accent);padding-left:4px;}
.drawer-list a.is-active{color:var(--c-accent);font-weight:600;}
.drawer-cta{
  display:flex;align-items:center;justify-content:center;height:48px;border-radius:var(--r-btn);
  background:var(--c-accent);color:var(--c-on-dark);font-weight:600;
}
.drawer-cta:hover{background:var(--c-accent-deep);color:var(--c-on-dark);}
.drawer-note{font-size:13px;line-height:1.7;color:var(--c-muted);margin:0;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-section) 0;}
.section--tight{padding-top:72px;}
.section--alt{background:var(--c-bg-2);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  font-size:13px;letter-spacing:.14em;color:var(--c-accent);font-weight:600;
  margin:0 0 12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:600;line-height:1.25;margin-bottom:14px;}
.section-sub{font-size:15px;color:var(--c-muted);margin:0;max-width:68ch;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:32px 0 0;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.crumbs a{color:var(--c-muted);transition:color .2s ease;}
.crumbs a:hover{color:var(--c-accent);}
.crumbs .sep{color:var(--c-faint);}
.crumbs .current{color:var(--c-muted);}

/* ============ 分类头区 ============ */
.cat-hero{padding:28px 0 0;}
.cat-hero__frame{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--c-line);min-height:340px;display:flex;align-items:flex-end;
}
.cat-hero__frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.cat-hero__frame::after{
  content:"";position:absolute;inset:0;background:rgba(18,26,24,.52);
}
.cat-hero__inner{position:relative;z-index:2;padding:56px 48px 44px;width:100%;}
.cat-hero__inner .label{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  background:rgba(242,227,216,.92);color:var(--c-accent-deep);
  font-size:12px;letter-spacing:.08em;font-weight:600;margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(28px,3.8vw,46px);line-height:1.2;font-weight:700;color:#fff;margin-bottom:16px;
}
.cat-hero__lead{color:#E7EAE7;font-size:16px;max-width:56ch;margin-bottom:20px;}
.cat-hero__meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:#C9CFC9;
}
.cat-hero__meta .dot{color:rgba(231,234,231,.5);}
.cat-hero__divider{border:0;border-top:1px solid var(--c-line);margin:40px 0 0;}

/* ============ 步骤流 ============ */
.steps{max-width:920px;margin-top:8px;}
.step{
  position:relative;display:grid;grid-template-columns:64px 1fr;gap:28px;
  padding-bottom:44px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:31px;top:64px;bottom:0;width:1px;background:var(--c-line);
}
.step:last-child::before{display:none;}
.step-num{
  width:64px;height:64px;border-radius:50%;border:1px solid var(--c-line);background:var(--c-surface);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:20px;font-weight:600;color:var(--c-accent);
  transition:border-color .24s ease,color .24s ease,background .24s ease;
}
.step:hover .step-num{border-color:var(--c-accent);background:var(--c-accent-soft);}
.step-body{padding-top:8px;}
.step-body h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.step-body p{font-size:15px;color:var(--c-muted);margin:0;max-width:64ch;}
.step-tag{
  display:inline-block;margin-top:12px;padding:4px 10px;border-radius:var(--r-badge);
  background:#EAF0EE;color:var(--c-jade);font-size:12px;font-weight:600;letter-spacing:.04em;
}

/* ============ 横向要点卡 ============ */
.keybar{
  margin-top:64px;background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;
}
.keybar__media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(18,26,24,.06);
  aspect-ratio:4/3;background:var(--c-surface);
}
.keybar__media img{width:100%;height:100%;object-fit:cover;}
.keybar h3{font-size:20px;font-weight:600;margin-bottom:12px;}
.keybar ul li{
  position:relative;padding-left:18px;font-size:15px;color:var(--c-muted);margin-bottom:10px;
}
.keybar ul li:last-child{margin-bottom:0;}
.keybar ul li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--c-accent);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--c-line);}
.accordion-item:last-child{border-bottom:1px solid var(--c-line);}
.accordion-button{
  background:transparent;color:var(--c-text);font-family:var(--font-display);
  font-size:17px;font-weight:600;padding:22px 44px 22px 0;line-height:1.5;
  box-shadow:none;border-radius:0!important;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--c-accent);box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--c-accent-soft);outline-offset:-2px;}
.accordion-button::after{
  content:"";width:9px;height:9px;background-image:none;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg);transition:transform .25s ease;margin-top:-4px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:2px;}
.accordion-body{
  padding:0 44px 24px 0;color:var(--c-muted);font-size:15px;line-height:1.85;max-width:72ch;
}
.accordion-body ol{margin:0;padding-left:0;counter-reset:faq-ol;}
.accordion-body ol li{
  position:relative;padding-left:24px;margin-bottom:10px;counter-increment:faq-ol;
}
.accordion-body ol li::before{
  content:counter(faq-ol) ".";position:absolute;left:0;color:var(--c-accent);font-weight:600;
}

/* ============ 相关分类 ============ */
.rel-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--c-line);border-left:1px solid var(--c-line);
}
.rel-item{
  border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:26px 22px;min-height:118px;display:flex;flex-direction:column;gap:8px;
  transition:background .2s ease;
}
.rel-item span.rel-idx{
  font-family:var(--font-display);font-size:13px;color:var(--c-faint);letter-spacing:.08em;
}
.rel-item strong{font-size:16px;font-weight:600;font-family:var(--font-display);}
.rel-item em{font-style:normal;font-size:13px;color:var(--c-muted);line-height:1.7;}
a.rel-item:hover{background:var(--c-bg-2);}
a.rel-item:hover strong{color:var(--c-accent);}
a.rel-item .rel-arrow{font-size:13px;color:var(--c-accent);}
.rel-item.is-current{background:var(--c-bg-2);color:var(--c-faint);cursor:default;}
.rel-item.is-current strong{color:var(--c-faint);}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.cta-bar h2{font-size:20px;font-weight:600;margin-bottom:6px;}
.cta-bar p{font-size:14px;color:var(--c-muted);margin:0;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.cta-act{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;
  border:1px solid var(--c-ink);border-radius:var(--r-btn);background:transparent;color:var(--c-ink);
  font-size:14px;font-weight:500;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.cta-act:hover{background:var(--c-ink);color:var(--c-on-dark);border-color:var(--c-ink);}
.cta-act:active{transform:translateY(1px);}
.cta-act.is-done{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-on-dark);}
.cta-act svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.toast-line{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,14px);
  background:var(--c-ink);color:var(--c-on-dark);font-size:14px;padding:12px 22px;
  border-radius:var(--r-btn);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  z-index:1200;
}
.toast-line.is-show{opacity:1;visibility:visible;transform:translate(-50%,0);}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#CFD6D2;padding:72px 0 28px;margin-top:104px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:40px;}
.f-brand{display:inline-flex;align-items:baseline;gap:8px;font-family:var(--font-display);font-size:20px;color:#fff;margin-bottom:16px;}
.f-brand .brand-mark{color:var(--c-accent);font-weight:700;}
.f-brand .brand-text{font-weight:600;}
.site-footer p{font-size:14px;line-height:1.8;color:#AEB7B2;margin:0;}
.site-footer h4{
  font-size:14px;letter-spacing:.08em;color:var(--c-faint);font-weight:600;
  margin-bottom:16px;font-family:var(--font-sans);
}
.f-links li{margin-bottom:10px;}
.f-links a{font-size:14px;color:#CFD6D2;transition:color .2s ease;}
.f-links a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--c-line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8E9792;}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.61,.36,1),transform .42s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sp-section:88px;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  :root{--sp-section:72px;}
  .container{padding:0 24px;}
  .nav-wrap{height:68px;grid-template-columns:1fr auto 1fr;}
  .nav-group--left,.nav-group--right{display:none;}
  .nav-toggle{display:flex;}
  .brand{font-size:19px;}
  .cat-hero__inner{padding:44px 32px 34px;}
  .keybar{grid-template-columns:1fr;gap:24px;}
  .keybar__media{aspect-ratio:16/9;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-act{flex:1;justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 18px;}
  body{font-size:15px;}
  .breadcrumb-bar{padding-top:20px;}
  .cat-hero__frame{min-height:280px;}
  .cat-hero__inner{padding:32px 22px 26px;}
  .cat-hero__lead{font-size:15px;}
  .step{grid-template-columns:44px 1fr;gap:16px;padding-bottom:32px;}
  .step::before{left:21px;top:44px;}
  .step-num{width:44px;height:44px;font-size:16px;}
  .step-body{padding-top:4px;}
  .step-body h3{font-size:18px;}
  .keybar{padding:22px;}
  .accordion-button{font-size:16px;padding:18px 36px 18px 0;}
  .accordion-body{padding-right:8px;}
  .rel-grid{grid-template-columns:1fr;}
  .rel-item{min-height:auto;padding:20px 18px;}
  .cta-bar{padding:22px 18px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-act{width:100%;height:48px;}
  .site-footer{padding:52px 0 24px;margin-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .footer-bottom p{line-height:1.6;}
}
@media (max-width:575px){
  .cat-hero__frame{min-height:240px;}
  .toast-line{left:18px;right:18px;transform:translate(0,14px);text-align:center;}
  .toast-line.is-show{transform:translate(0,0);}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important;}
}

/* roulang page: category3 */
:root{
  --c-ink:#121A18;
  --c-ink-2:#1F2C29;
  --c-ink-3:#2E3D39;
  --c-accent:#C05B2B;
  --c-accent-deep:#9E4820;
  --c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-bg-2:#F3EFE8;
  --c-text:#1A1A1A;
  --c-muted:#6B6F6A;
  --c-faint:#9A9E99;
  --c-on-dark:#E7EAE7;
  --c-line:#E3DED5;
  --c-line-dark:rgba(231,234,231,.14);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --r-btn:6px;
  --r-card:10px;
  --r-img:8px;
  --r-badge:4px;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --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;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);color:var(--c-ink);font-weight:600;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (max-width:1199.98px){.container{padding-left:24px;padding-right:24px;}}
@media (max-width:767.98px){.container{padding-left:18px;padding-right:18px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--c-line);
  box-shadow:var(--shadow-1);
}
.nav-wrap{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:84px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:64px;}
.nav-group{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-group--left{justify-self:start;}
.nav-group--right{justify-self:end;}
.nav-group a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--c-text);
  transition:color .22s var(--ease);
}
.nav-group a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--c-accent);
  transition:width .24s var(--ease);
}
.nav-group a:hover{color:var(--c-accent);}
.nav-group a:hover::after{width:100%;}
.nav-group a.is-active{color:var(--c-ink);font-weight:600;}
.nav-group a.is-active::after{width:100%;}
.nav-group a.nav-cta{
  background:var(--c-accent);
  color:#fff;
  padding:11px 22px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.nav-group a.nav-cta::after{display:none;}
.nav-group a.nav-cta:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.brand{
  justify-self:center;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  color:var(--c-ink);
  white-space:nowrap;
}
.brand-mark{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:700;
  letter-spacing:.01em;
}
.brand-text{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:600;
  letter-spacing:.02em;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  width:46px;
  height:46px;
  padding:0;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.6px;
  background:var(--c-ink);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-accent);}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

@media (max-width:991.98px){
  .nav-wrap{
    grid-template-columns:1fr;
    height:auto;
    min-height:64px;
    padding:14px 0;
    gap:0;
  }
  .site-header.is-scrolled .nav-wrap{height:auto;}
  .brand{grid-row:1;justify-self:center;}
  .brand-mark{font-size:20px;}
  .brand-text{font-size:17px;}
  .nav-toggle{
    display:inline-flex;
    position:absolute;
    right:0;
    top:50%;
    transform:translateY(-50%);
    z-index:95;
  }
  .nav-group{
    grid-column:1 / -1;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
    padding:6px 20px;
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-2);
  }
  .nav-group--left{grid-row:2;margin-top:14px;}
  .nav-group--right{grid-row:3;margin-top:-1px;border-top-left-radius:0;border-top-right-radius:0;}
  .site-header.nav-open .nav-group{display:flex;}
  .nav-group li{width:100%;}
  .nav-group a{
    display:block;
    padding:15px 2px;
    font-size:16px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-group li:last-child a{border-bottom:0;}
  .nav-group a::after{display:none;}
  .nav-group a.is-active{color:var(--c-accent);}
  .nav-group a.nav-cta{
    margin:14px 0 10px;
    padding:13px 20px;
    text-align:center;
    border-radius:var(--r-btn);
  }
  .nav-group a.nav-cta{border-bottom:0;}
}

/* ============ 面包屑 ============ */
.crumb-wrap{padding-top:32px;}
.breadcrumb-bar ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-muted);
}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px;}
.breadcrumb-bar li + li::before{content:"/";color:var(--c-faint);}
.breadcrumb-bar a{color:var(--c-muted);transition:color .2s var(--ease);}
.breadcrumb-bar a:hover{color:var(--c-accent);}
.breadcrumb-bar [aria-current]{color:var(--c-muted);}

/* ============ 分类头区 ============ */
.page-hero{
  position:relative;
  margin-top:28px;
  padding:96px 0 56px;
  min-height:340px;
  display:flex;
  align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center 32%;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(18,26,24,.55);
}
.page-hero .container{position:relative;z-index:2;}
.hero-eyebrow{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--c-accent-soft);
  margin-bottom:14px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;
  letter-spacing:-.01em;
  font-weight:700;
}
.hero-lead{
  margin-top:16px;
  max-width:640px;
  font-size:16px;
  line-height:1.8;
  color:rgba(231,234,231,.88);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--c-line-dark);
  font-size:13px;
  color:rgba(231,234,231,.72);
}
.hero-meta li{display:flex;align-items:center;gap:10px;}
.hero-meta li + li::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--c-accent);
  opacity:.85;
}
@media (max-width:767.98px){
  .page-hero{padding:64px 0 40px;min-height:260px;}
  .hero-meta{gap:8px 16px;}
  .hero-meta li + li::before{display:none;}
}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section--tight{padding:72px 0 104px;}
@media (max-width:991.98px){.section{padding:72px 0;}.section--tight{padding:56px 0 72px;}}
@media (max-width:575.98px){.section{padding:56px 0;}.section--tight{padding:44px 0 56px;}}

.section-head{margin-bottom:48px;max-width:760px;}
.section-head h2{
  position:relative;
  padding-top:18px;
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:32px;
  height:2px;
  background:var(--c-accent);
}
.section-sub{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--c-muted);
  max-width:640px;
}
@media (max-width:767.98px){.section-head{margin-bottom:32px;}}

.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none;}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--c-line);
  border-radius:0;
}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--c-line);}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  position:relative;
  width:100%;
  padding:20px 40px 20px 0;
  background:transparent;
  border:0;
  box-shadow:none;
  font-family:var(--font-display);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--c-ink);
  text-align:left;
  transition:color .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--c-accent);
  background:transparent;
  box-shadow:none;
}
.faq-accordion .accordion-button:hover{color:var(--c-accent);}
.faq-accordion .accordion-button:focus{
  box-shadow:none;
  border-color:transparent;
  outline:2px solid var(--c-accent-soft);
  outline-offset:-2px;
}
.faq-accordion .accordion-button::after{
  content:"＋";
  position:absolute;
  right:6px;
  top:22px;
  width:auto;
  height:auto;
  margin:0;
  background:none;
  font-size:15px;
  font-weight:400;
  color:var(--c-accent);
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"－";
  transform:rotate(180deg);
}
.faq-accordion .accordion-body{
  padding:0 40px 22px 0;
  max-width:72ch;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-muted);
}
.faq-accordion .accordion-body p + p{margin-top:10px;}

/* ============ 紧凑清单 ============ */
.list-block{margin-bottom:8px;}
.list-title{
  font-size:20px;
  line-height:1.4;
  padding-bottom:14px;
}
.list-title span{color:var(--c-muted);font-family:var(--font-sans);font-size:13px;font-weight:400;margin-left:10px;}
.tight-list{border-top:1px solid var(--c-line);counter-reset:tl;}
.tight-list li{
  position:relative;
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--c-line);
  font-size:15.5px;
  line-height:1.7;
  color:var(--c-text);
  transition:background .2s var(--ease);
}
.tight-list li::before{
  counter-increment:tl;
  content:counter(tl,decimal-leading-zero);
  flex:0 0 auto;
  min-width:30px;
  padding-top:3px;
  font-family:var(--font-display);
  font-size:14px;
  color:var(--c-accent);
  letter-spacing:.04em;
}
.tight-list li:hover{background:var(--c-bg-2);}
.tight-list--ink li::before{color:var(--c-ink-3);}

/* ============ 风险提示卡 ============ */
.risk-card{
  display:grid;
  grid-template-columns:1fr 320px;
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.risk-card__body{padding:40px;}
.risk-card__body h2{font-size:clamp(22px,2.2vw,28px);line-height:1.3;}
.risk-card__body > p{
  margin-top:14px;
  max-width:56ch;
  font-size:15.5px;
  line-height:1.85;
  color:var(--c-muted);
}
.risk-list{margin-top:24px;border-top:1px solid var(--c-line);}
.risk-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--c-line);
  font-size:15px;
  line-height:1.7;
}
.risk-list li::before{
  content:"";
  flex:0 0 auto;
  width:16px;
  height:1.5px;
  margin-top:12px;
  background:var(--c-accent);
}
.risk-card__media{position:relative;min-height:260px;}
.risk-card__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
}
@media (max-width:991.98px){
  .risk-card{grid-template-columns:1fr;}
  .risk-card__body{padding:28px 24px;}
  .risk-card__media{min-height:200px;order:-1;}
}

/* ============ 相关分类 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.related-item{
  display:block;
  padding:26px 24px;
  border-right:1px solid var(--c-line);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.related-item:last-child{border-right:0;}
.related-item .idx{
  display:block;
  font-family:var(--font-display);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-faint);
  margin-bottom:10px;
}
.related-item .name{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:600;
  color:var(--c-ink);
  transition:color .22s var(--ease);
}
.related-item:hover{background:var(--c-bg-2);}
.related-item:hover .name{color:var(--c-accent);}
.related-item.is-current{cursor:default;background:transparent;}
.related-item.is-current .name{color:var(--c-faint);}
@media (max-width:991.98px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .related-item:nth-child(2n){border-right:0;}
  .related-item:nth-child(-n+2){border-bottom:1px solid var(--c-line);}
}
@media (max-width:575.98px){
  .related-grid{grid-template-columns:1fr;}
  .related-item{border-right:0;border-bottom:1px solid var(--c-line);}
  .related-item:last-child{border-bottom:0;}
}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:28px 32px;
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
}
.cta-bar h2{font-size:20px;line-height:1.4;}
.cta-bar p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--c-muted);}
.cta-bar__actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 18px;
  background:transparent;
  border:1px solid var(--c-ink);
  border-radius:var(--r-btn);
  color:var(--c-ink);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-on-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost.is-saved{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.btn-ghost.is-saved:hover{background:var(--c-accent-deep);border-color:var(--c-accent-deep);}
@media (max-width:767.98px){
  .cta-bar{flex-direction:column;align-items:stretch;padding:24px 20px;}
  .cta-bar__actions{width:100%;}
  .btn-ghost{flex:1 1 100%;}
}

/* ============ 提示条 ============ */
.site-toast{
  position:fixed;
  left:50%;
  bottom:32px;
  transform:translate(-50%,12px);
  z-index:200;
  padding:12px 22px;
  background:var(--c-ink);
  color:var(--c-on-dark);
  font-size:14px;
  border-radius:var(--r-btn);
  box-shadow:var(--shadow-2);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  max-width:calc(100% - 36px);
  text-align:center;
}
.site-toast.is-show{opacity:1;transform:translate(-50%,0);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:#CFD6D2;
  padding:72px 0 0;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.f-brand{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  color:var(--c-on-dark);
  margin-bottom:16px;
}
.f-brand .brand-mark{font-family:var(--font-display);font-size:22px;font-weight:700;}
.f-brand .brand-text{font-family:var(--font-display);font-size:18px;font-weight:600;}
.site-footer p{
  font-size:14px;
  line-height:1.8;
  color:#A9B2AD;
  max-width:34ch;
}
.site-footer h4{
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-faint);
  margin-bottom:16px;
}
.f-links li{margin-bottom:10px;}
.f-links a{
  font-size:14px;
  color:#CFD6D2;
  transition:color .22s var(--ease);
}
.f-links a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  padding:22px 0 28px;
  border-top:1px solid var(--c-line-dark);
}
.footer-bottom p{font-size:13px;color:#8E9893;max-width:60ch;}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:10px;line-height:1.6;}
}

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

/* roulang page: category4 */
:root{
  --c-ink:#121A18;
  --c-ink-2:#1F2C29;
  --c-ink-3:#2E3D39;
  --c-accent:#C05B2B;
  --c-accent-deep:#9E4820;
  --c-accent-soft:#F2E3D8;
  --c-jade:#2F5D57;
  --c-bg:#FAF8F4;
  --c-surface:#FFFFFF;
  --c-bg-2:#F3EFE8;
  --c-text:#1A1A1A;
  --c-muted:#6B6F6A;
  --c-faint:#9A9E99;
  --c-on-dark:#E7EAE7;
  --c-line:#E3DED5;
  --c-line-dark:rgba(231,234,231,.14);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --radius-btn:6px;
  --radius-card:10px;
  --radius-img:8px;
  --radius-badge:4px;
  --shadow-1:0 1px 2px rgba(18,26,24,.04);
  --shadow-2:0 10px 28px -14px rgba(18,26,24,.18);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-jade);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--c-accent)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);color:var(--c-ink)}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;letter-spacing:-.01em;font-weight:700}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:600}
h3{font-size:20px;line-height:1.4;font-weight:600}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent-soft);outline-offset:2px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media(max-width:991px){.container{padding-left:24px;padding-right:24px}}
@media(max-width:575px){.container{padding-left:18px;padding-right:18px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  background:var(--c-surface);
  border-bottom-color:var(--c-line);
  box-shadow:var(--shadow-1);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:84px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:64px}
.nav-group{display:flex;align-items:center;gap:28px}
.nav-group--right{justify-content:flex-end}
.nav-group a{
  position:relative;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--c-text);
  padding:6px 0;
  white-space:nowrap;
}
.nav-group a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--c-accent);
  transition:width .24s var(--ease);
}
.nav-group a:hover{color:var(--c-accent)}
.nav-group a:hover::after{width:100%}
.nav-group a.is-active{font-weight:600;color:var(--c-ink)}
.nav-group a.is-active::after{width:100%}
.nav-cta{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 20px;
  border-radius:999px;
  background:var(--c-accent);
  color:var(--c-on-dark)!important;
  font-weight:600;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--c-accent-deep);transform:translateY(-1px)}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  justify-self:center;
  color:var(--c-ink);
}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  font-family:var(--font-display);
  font-size:26px;
  font-weight:700;
  color:var(--c-accent);
  letter-spacing:-.02em;
}
.brand-text{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:600;
  letter-spacing:.04em;
}
.nav-toggle{
  display:none;
  justify-self:end;
  width:44px;
  height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--radius-btn);
  background:var(--c-surface);
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-ink);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media(max-width:991px){
  .nav-wrap{height:64px;grid-template-columns:auto 1fr auto;gap:12px}
  .nav-group--left,.nav-group--right{display:none}
  .brand{justify-self:start}
  .brand-text{font-size:17px}
  .brand-mark{font-size:22px}
  .nav-toggle{display:flex}
}
.nav-drawer{
  position:fixed;
  top:0;
  right:0;
  width:300px;
  max-width:100%;
  height:100%;
  background:var(--c-surface);
  border-left:1px solid var(--c-line);
  transform:translateX(100%);
  transition:transform .2s var(--ease);
  z-index:1000;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  padding:24px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);background:transparent;border-radius:var(--radius-btn);font-size:18px;color:var(--c-muted);cursor:pointer}
.drawer-close:hover{color:var(--c-accent);border-color:var(--c-accent)}
.drawer-title{font-size:13px;letter-spacing:.08em;color:var(--c-faint);margin:20px 0 10px}
.drawer-list li{border-bottom:1px solid var(--c-line)}
.drawer-list a{display:block;padding:14px 0;font-size:15px;color:var(--c-text)}
.drawer-list a.is-active{color:var(--c-accent);font-weight:600}
.drawer-cta{margin-top:24px;display:block;text-align:center;height:48px;line-height:48px;border-radius:var(--radius-btn);background:var(--c-accent);color:var(--c-on-dark);font-weight:600}
.drawer-cta:hover{background:var(--c-accent-deep);color:var(--c-on-dark)}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--c-muted);line-height:1.8}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(18,26,24,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
  z-index:999;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
@media(max-width:575px){.nav-drawer{width:100%;border-left:0}}

/* ---------- 面包屑 ---------- */
.crumb{padding:24px 0 0;font-size:13px;color:var(--c-muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li::after{content:"/";margin-left:8px;color:var(--c-faint)}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-accent)}
.crumb .current{color:var(--c-muted)}

/* ---------- 分类头区 ---------- */
.cat-banner{
  position:relative;
  margin-top:24px;
  border-radius:var(--radius-card);
  overflow:hidden;
  min-height:340px;
  display:flex;
  align-items:flex-end;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border:1px solid rgba(18,26,24,.06);
}
.cat-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(18,26,24,.5);
}
.cat-banner-inner{position:relative;padding:48px;max-width:820px}
.cat-kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--c-accent-soft);
  border:1px solid rgba(242,227,216,.36);
  border-radius:var(--radius-badge);
  padding:3px 10px;
  margin-bottom:18px;
}
.cat-banner h1{color:#fff;margin-bottom:16px}
.cat-lead{color:rgba(231,234,231,.88);font-size:16px;margin-bottom:20px;max-width:56ch}
.cat-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  font-size:13px;
  color:rgba(231,234,231,.72);
  letter-spacing:.02em;
}
.cat-meta span{display:inline-flex;align-items:center;gap:8px}
.cat-meta span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-accent)}
@media(max-width:767px){
  .cat-banner{min-height:260px}
  .cat-banner-inner{padding:28px 22px}
}
.banner-rule{margin-top:0;border-top:1px solid var(--c-line)}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--c-bg-2)}
@media(max-width:991px){.section{padding:72px 0}.section--tight{padding:56px 0}}
@media(max-width:575px){.section{padding:56px 0}}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:40px;
}
.sec-head p{color:var(--c-muted);font-size:15px;max-width:60ch;margin:12px 0 0}
.sec-index{
  font-family:var(--font-display);
  font-size:14px;
  letter-spacing:.14em;
  color:var(--c-accent);
  display:block;
  margin-bottom:12px;
}
.arrow-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  white-space:nowrap;
}
.arrow-link .ar{transition:transform .24s var(--ease)}
.arrow-link:hover{color:var(--c-accent)}
.arrow-link:hover .ar{transform:translateX(4px)}

/* ---------- 对比表 ---------- */
.spec-wrap{border-top:1px solid var(--c-line)}
.spec-table{width:100%;border-collapse:collapse}
.spec-table thead th{
  background:var(--c-bg-2);
  color:var(--c-jade);
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--c-line);
  white-space:nowrap;
}
.spec-table td{
  padding:20px 18px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-muted);
  font-size:15px;
  line-height:1.75;
  vertical-align:top;
}
.spec-table td:first-child{
  color:var(--c-ink);
  font-family:var(--font-display);
  font-size:17px;
  font-weight:600;
  white-space:nowrap;
}
.spec-table tbody tr{transition:background .2s var(--ease)}
.spec-table tbody tr:hover{background:rgba(243,239,232,.6)}
.tag-jade{
  display:inline-block;
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  background:rgba(47,93,87,.1);
  color:var(--c-jade);
  letter-spacing:.02em;
}
@media(max-width:767.98px){
  .spec-table thead{display:none}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table tr{
    border:1px solid var(--c-line);
    border-radius:var(--radius-card);
    background:var(--c-surface);
    padding:10px 0;
    margin-bottom:16px;
  }
  .spec-table td{border:0;padding:8px 18px}
  .spec-table td::before{
    content:attr(data-label);
    display:block;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--c-faint);
    margin-bottom:2px;
  }
  .spec-table td:first-child{font-size:18px;padding-top:14px}
  .spec-table tbody tr:hover{background:var(--c-surface)}
}

/* ---------- 横向图文行 ---------- */
.media-list{border-top:1px solid var(--c-line)}
.media-row{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:32px;
  align-items:center;
  padding:32px 0;
  border-bottom:1px solid var(--c-line);
  transition:background .2s var(--ease);
}
.media-row:hover{background:rgba(243,239,232,.5)}
.media-row figure{margin:0;border-radius:var(--radius-img);overflow:hidden;border:1px solid rgba(18,26,24,.06)}
.media-row figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-row h3{margin-bottom:10px;transition:color .2s var(--ease)}
.media-row:hover h3{color:var(--c-accent)}
.media-row p{color:var(--c-muted);font-size:15px;margin-bottom:10px;max-width:68ch}
.media-meta{font-size:13px;color:var(--c-faint);letter-spacing:.02em;display:flex;gap:14px;flex-wrap:wrap}
@media(max-width:767.98px){
  .media-row{grid-template-columns:1fr;gap:18px;padding:24px 0}
}

/* ---------- 双卡 ---------- */
.duo-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--c-accent);box-shadow:var(--shadow-2)}
.card figure{margin:0}
.card figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:19px;margin-bottom:10px;transition:color .2s var(--ease)}
.card:hover h3{color:var(--c-accent)}
.card p{color:var(--c-muted);font-size:15px;margin-bottom:16px}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-faint)}
.badge-soft{
  display:inline-block;
  font-size:12px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  background:var(--c-accent-soft);
  color:var(--c-accent-deep);
  margin-bottom:14px;
  align-self:flex-start;
}
@media(max-width:767.98px){.duo-grid{grid-template-columns:1fr}}

/* ---------- 答疑 accordion ---------- */
.faq-wrap{border-top:1px solid var(--c-line);max-width:900px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.accordion-item:first-child{border-top:1px solid var(--c-line)}
.accordion-button{
  background:transparent;
  border:0;
  box-shadow:none;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  font-family:var(--font-sans);
  border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--c-accent);background:transparent;box-shadow:none}
.accordion-button:hover{color:var(--c-accent)}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-accent-soft);outline-offset:2px}
.accordion-button::after{
  width:12px;
  height:12px;
  background-size:12px;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C05B2B'%3E%3Cpath d='M8 1.2 14.8 8 8 14.8 6.7 13.5 11.2 9H1.3V7H11.2L6.7 2.5z'/%3E%3C/svg%3E");
  transition:transform .26s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(90deg)}
.accordion-body{
  padding:0 0 24px;
  color:var(--c-muted);
  font-size:15px;
  line-height:1.85;
  max-width:72ch;
}
.accordion-body ol{list-style:decimal;padding-left:22px;margin:12px 0 0}
.accordion-body li{margin-bottom:6px}

/* ---------- 相关分类跳转 ---------- */
.jump{border-top:1px solid var(--c-line);padding-top:32px}
.jump-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.jump-grid a,.jump-grid span{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:76px;
  padding:16px;
  background:var(--c-surface);
  font-size:15px;
  color:var(--c-text);
  text-align:center;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.jump-grid a:hover{background:var(--c-bg-2);color:var(--c-accent)}
.jump-grid span{background:var(--c-bg-2);color:var(--c-faint);cursor:not-allowed}
@media(max-width:767.98px){.jump-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:420px){.jump-grid{grid-template-columns:1fr}}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:28px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-bar h3{font-size:20px;margin-bottom:6px}
.cta-bar p{margin:0;color:var(--c-muted);font-size:14px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 20px;
  border:1px solid var(--c-ink);
  border-radius:var(--radius-btn);
  background:transparent;
  color:var(--c-ink);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-on-dark)}
.btn-ghost:active{transform:translateY(1px)}
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border:0;
  border-radius:var(--radius-btn);
  background:var(--c-accent);
  color:var(--c-on-dark);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-main:hover{background:var(--c-accent-deep);transform:translateY(-1px);color:var(--c-on-dark)}
.btn-main:active{transform:translateY(1px)}
.btn-ghost.is-done,.btn-main.is-done{background:var(--c-jade);border-color:var(--c-jade);color:var(--c-on-dark)}
@media(max-width:767.98px){
  .cta-bar{flex-direction:column;align-items:stretch;padding:24px}
  .cta-actions{flex-direction:row}
  .cta-actions .btn-ghost,.cta-actions .btn-main{flex:1 1 auto;justify-content:center;min-height:44px}
}
.toast-note{
  position:fixed;
  left:50%;
  bottom:32px;
  transform:translate(-50%,12px);
  background:var(--c-ink);
  color:var(--c-on-dark);
  font-size:14px;
  padding:12px 20px;
  border-radius:var(--radius-btn);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  z-index:1200;
}
.toast-note.is-on{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#CFD6D2;margin-top:104px;padding:72px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.f-brand{display:flex;align-items:baseline;gap:8px;margin-bottom:16px}
.f-brand .brand-mark{font-family:var(--font-display);font-size:24px;font-weight:700;color:var(--c-accent)}
.f-brand .brand-text{font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--c-on-dark);letter-spacing:.04em}
.site-footer p{color:#A9B2AD;line-height:1.8;margin:0 0 12px}
.site-footer h4{
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-faint);
  margin-bottom:16px;
}
.f-links li{margin-bottom:10px}
.f-links a{color:#CFD6D2}
.f-links a:hover{color:var(--c-accent)}
.footer-bottom{
  border-top:1px solid var(--c-line-dark);
  padding:24px 0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8E9793;
}
.footer-bottom p{margin:0;color:#8E9793}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:575px){
  .site-footer{margin-top:56px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;line-height:1.9}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}