/* roulang page: index */
:root{
  --ink:#16171B;
  --paper:#F5F2EA;
  --sand:#EAE5D9;
  --line:#D8D1C2;
  --accent:#E4572E;
  --accent-deep:#C4431F;
  --teal:#26433F;
  --muted:#6B6C70;
  --radius:4px;
  --shadow-hover:0 14px 36px -12px rgba(22,23,27,.18);
  --serif:"Noto Serif SC","Songti SC",Songti SC,STSong,serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{padding:0;margin:0;list-style:none}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:rgba(228,87,46,.18)}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
@media (min-width:768px){.wrap{padding-inline:32px}}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius);
  font-size:14px;font-weight:600;letter-spacing:.02em;border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:13px}
.btn-dark{background:var(--paper);color:var(--ink)}
.btn-dark:hover{background:#fff;transform:translateY(-1px)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:3px;transition:color .2s ease,border-color .2s ease}
.text-link:hover{color:var(--accent);border-color:var(--accent)}

/* badges */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;line-height:1;padding:5px 8px;border-radius:2px;background:var(--teal);color:var(--paper);letter-spacing:.06em}
.badge-soft{background:var(--sand);color:var(--teal);border:1px solid var(--line)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,242,234,.88);border-bottom:1px solid transparent;transition:background .22s ease,border-color .22s ease,box-shadow .22s ease}
.site-header.is-stuck{background:rgba(245,242,234,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(22,23,27,.5)}
.nav-desktop{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;min-height:76px}
.nav-left{display:flex;align-items:center;gap:26px}
.nav-right{display:flex;align-items:center;gap:26px;justify-content:flex-end}
.nav-link{position:relative;font-size:14px;padding:6px 0;color:var(--ink);transition:color .2s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--accent);font-weight:600}
.brand{display:flex;flex-direction:column;align-items:center;text-align:center;line-height:1.15}
.brand-main{font-family:var(--serif);font-weight:800;font-size:19px;letter-spacing:.02em}
.brand-sub{font-size:11px;letter-spacing:.2em;color:var(--muted);margin-top:3px}
.nav-mobile{display:none;align-items:center;justify-content:space-between;min-height:64px}
.menu-toggle{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:8px 14px;border:1.5px solid var(--line);border-radius:var(--radius);font-size:13px;font-weight:600;transition:background .2s ease,color .2s ease,border-color .2s ease}
.menu-toggle:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.menu-bars{display:inline-flex;flex-direction:column;gap:3px}
.menu-bars i{display:block;width:14px;height:1.5px;background:currentColor}
.drawer{position:fixed;inset:0;z-index:80;background:var(--paper);transform:translateY(-101%);transition:transform .3s cubic-bezier(.22,.7,.28,1);display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid var(--line);border-radius:var(--radius);font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:20px 0}
.drawer-nav a{display:block;padding:16px 2px;font-size:17px;font-family:var(--serif);font-weight:700;border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease}
.drawer-nav a:hover{color:var(--accent);padding-left:6px}
.drawer-cta{margin-top:auto;padding-top:20px}
.drawer-cta .btn{width:100%}
body.no-scroll{overflow:hidden}

/* hero */
.hero{padding:48px 0 40px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--accent);margin-bottom:16px}
.hero-h1{font-family:var(--serif);font-size:clamp(2.25rem,5vw,3.4rem);line-height:1.12;font-weight:800;letter-spacing:-.01em}
.hero-sub{margin-top:18px;font-size:16px;color:var(--muted);max-width:32em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.hero-meta span+span{padding-left:14px;border-left:1px solid var(--line)}
.hero-figure{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--sand);aspect-ratio:4/5}
.hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.22,.7,.28,1)}
.hero-figure:hover img{transform:scale(1.03)}
.hero-tag{position:absolute;left:12px;bottom:12px;background:rgba(22,23,27,.82);color:var(--paper);font-size:12px;letter-spacing:.1em;padding:6px 10px;border-radius:2px}

/* sections */
.section{padding:60px 0}
.section-alt{background:var(--sand)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.sec-title{font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.sec-sub{font-size:14px;color:var(--muted);margin-top:8px}
.sec-num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.16em;display:block;margin-bottom:10px}

/* collection index */
.toc{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;border-top:1px solid var(--line)}
.toc-row{position:relative;display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:16px;padding:22px 16px 22px 20px;border-bottom:1px solid var(--line);transition:background .2s ease}
.toc-row::before{content:"";position:absolute;left:0;bottom:0;width:3px;height:0;background:var(--accent);transition:height .18s ease}
.toc-row:hover::before{height:100%}
.toc-row:hover{background:rgba(234,229,217,.55)}
.toc-idx{font-family:var(--mono);font-size:19px;font-weight:600;color:var(--accent);opacity:.85}
.toc-body{display:flex;flex-direction:column;gap:4px}
.toc-title{font-family:var(--serif);font-size:19px;font-weight:700;line-height:1.4}
.toc-desc{font-size:13.5px;color:var(--muted);line-height:1.6}
.toc-arrow{color:var(--muted);transition:transform .2s ease,color .2s ease}
.toc-row:hover .toc-arrow{transform:translateX(4px);color:var(--accent)}

/* featured */
.feat-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:stretch}
.feat-lead{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#FAF7F1;transition:border-color .2s ease,box-shadow .22s ease,transform .22s ease}
.feat-lead:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.feat-lead-media{aspect-ratio:16/10;overflow:hidden;background:var(--sand)}
.feat-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}
.feat-lead:hover .feat-lead-media img{transform:scale(1.02)}
.feat-lead-body{padding:22px}
.feat-lead-title{font-family:var(--serif);font-size:22px;font-weight:700;line-height:1.4;margin-top:12px;transition:color .2s ease}
.feat-lead:hover .feat-lead-title{color:var(--accent)}
.feat-lead-desc{font-size:14px;color:var(--muted);margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feat-mini{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.mini-item{padding:22px 20px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);transition:background .2s ease}
.mini-item:hover{background:rgba(234,229,217,.6)}
.mini-title{font-family:var(--serif);font-size:17px;font-weight:700;line-height:1.5;margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease}
.mini-item:hover .mini-title{color:var(--accent)}
.mini-date{display:block;font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:12px;letter-spacing:.04em}

/* news list */
.news-list{border-top:1px solid var(--line)}
.news-row{display:grid;grid-template-columns:104px 1fr auto;gap:22px;align-items:start;padding:22px 8px;border-bottom:1px solid var(--line);transition:background .2s ease,padding-left .2s ease}
.news-row:hover{background:rgba(234,229,217,.45);padding-left:14px}
.news-date{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.03em;padding-top:3px}
.news-main{display:block;min-width:0}
.news-title{display:block;font-family:var(--serif);font-size:18px;font-weight:700;line-height:1.5;transition:color .2s ease}
.news-row:hover .news-title{color:var(--accent)}
.news-excerpt{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;color:var(--muted);margin-top:6px;line-height:1.7}
.news-meta{display:flex;align-items:center;gap:10px;padding-top:2px;white-space:nowrap}
.news-arrow{color:var(--muted);transition:transform .2s ease,color .2s ease}
.news-row:hover .news-arrow{transform:translateX(4px);color:var(--accent)}
.empty-block{border:1px dashed var(--line);border-radius:var(--radius);padding:52px 24px;text-align:center;background:rgba(250,247,241,.6)}
.empty-block p{color:var(--muted);font-size:15px}
.empty-block .btn{margin-top:18px}

/* recommend */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-item{display:block;padding:22px 20px;background:#FAF7F1;border:1px solid var(--line);border-radius:var(--radius);transition:border-color .2s ease,box-shadow .22s ease,transform .22s ease}
.rec-item:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.rec-idx{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.12em}
.rec-title{font-family:var(--serif);font-size:17px;font-weight:700;line-height:1.55;margin-top:10px;transition:color .2s ease}
.rec-item:hover .rec-title{color:var(--accent)}

/* cta band */
.cta-band{background:var(--ink);color:var(--paper);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-title{font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.3}
.cta-desc{font-size:14px;color:rgba(245,242,234,.72);margin-top:12px;max-width:34em}
.cta-side{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.share-group{display:flex;gap:10px}
.share-btn{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid rgba(245,242,234,.32);border-radius:var(--radius);color:var(--paper);transition:color .2s ease,border-color .2s ease,transform .2s ease}
.share-btn:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.share-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.copy-tip{font-size:12.5px;color:var(--accent);opacity:0;transition:opacity .2s ease}
.copy-tip.show{opacity:1}

/* faq */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;text-align:left;padding:20px 4px;font-size:16px;font-weight:600;line-height:1.6;transition:color .2s ease}
.faq-q:hover{color:var(--accent)}
.faq-ico{position:relative;flex:none;width:16px;height:16px}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:currentColor;transition:transform .26s ease,opacity .26s ease}
.faq-ico::before{left:0;top:7px;width:16px;height:1.5px}
.faq-ico::after{left:7px;top:0;width:1.5px;height:16px}
.faq-item.open .faq-ico::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-q{color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s cubic-bezier(.22,.7,.28,1)}
.faq-a-inner{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--muted);background:rgba(234,229,217,.55);border-radius:var(--radius);padding:16px 18px;margin-bottom:4px}

/* footer */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand-main{font-family:var(--serif);font-size:20px;font-weight:800;letter-spacing:.02em}
.footer-brand-sub{font-size:11px;letter-spacing:.2em;color:rgba(245,242,234,.55);margin-top:4px}
.footer-desc{font-size:13.5px;line-height:1.9;color:rgba(245,242,234,.68);margin-top:16px;max-width:26em}
.footer-col-title{font-size:12px;letter-spacing:.14em;color:rgba(245,242,234,.5);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{font-size:14px;line-height:2.2;color:rgba(245,242,234,.86);transition:color .2s ease}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:20px;border-top:1px solid rgba(245,242,234,.16);font-size:13px;color:rgba(245,242,234,.6)}
.footer-bottom a{color:rgba(245,242,234,.8);transition:color .2s ease}
.footer-bottom a:hover{color:var(--accent)}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.7,.28,1),transform .5s cubic-bezier(.22,.7,.28,1)}
.reveal.is-in{opacity:1;transform:none}

/* responsive */
@media (min-width:768px){
  .section{padding:84px 0}
  .hero{padding:64px 0 56px}
}
@media (min-width:1024px){
  .section{padding:104px 0}
  .hero{padding:78px 0 66px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-mobile{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-figure{aspect-ratio:16/10;order:2}
  .feat-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .toc{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:80%;gap:16px;overflow-x:auto;scrollbar-width:none;padding-bottom:10px;-webkit-overflow-scrolling:touch}
  .rec-grid::-webkit-scrollbar{display:none}
  .news-row{grid-template-columns:1fr;gap:10px;padding:20px 6px}
  .news-meta{padding-top:6px}
  .feat-mini{grid-template-columns:1fr}
  .mini-item:nth-child(odd){border-right:1px solid var(--line)}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-side{width:100%}
  .cta-side .btn{flex:1 1 auto}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col{border-top:1px solid rgba(245,242,234,.14);padding-top:22px}
  .footer-col:first-child{border-top:0;padding-top:0}
  .hero-meta{font-size:12.5px;gap:10px}
  .hero-meta span+span{padding-left:10px}
  .toc-row{grid-template-columns:44px 1fr auto;padding:18px 12px 18px 16px;gap:12px}
  .toc-title{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --paper:#F5F2EA;
  --paper-2:#EAE5D9;
  --ink:#16171B;
  --ink-soft:#2C2D31;
  --accent:#E4572E;
  --accent-dark:#C4431F;
  --jade:#26433F;
  --muted:#6B6C70;
  --line:#D8D1C2;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC","STSong",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --radius:4px;
  --shadow-hover:0 14px 36px -12px rgba(22,23,27,.18);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(228,87,46,.18)}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media (min-width:768px){ .wrap{padding:0 32px} }

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,242,234,.94);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header.is-scrolled{
  background:rgba(245,242,234,.94);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -20px rgba(22,23,27,.5);
}
.nav-desktop{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:76px;
}
.nav-left{display:flex;align-items:center;gap:26px;justify-self:start}
.nav-right{display:flex;align-items:center;gap:26px;justify-self:end}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:14px;
  color:var(--ink-soft);
  letter-spacing:.01em;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:8px;height:2px;
  background:var(--accent);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s cubic-bezier(.22,.7,.28,1);
}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:flex;flex-direction:column;align-items:center;
  line-height:1.1;text-align:center;
  padding:6px 10px;border-radius:var(--radius);
}
.brand-main{
  font-family:var(--serif);
  font-size:21px;font-weight:800;
  letter-spacing:.03em;color:var(--ink);
}
.brand-sub{
  margin-top:5px;padding-left:.28em;
  font-size:11px;letter-spacing:.28em;color:var(--muted);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border:1.5px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-primary{background:var(--accent);color:#FFF;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-light:hover{background:#FFF;transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:var(--paper);border-color:rgba(245,242,234,.42)}
.btn-outline-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.nav-mobile{display:none;align-items:center;justify-content:space-between;min-height:64px}
.menu-toggle{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 14px;
  background:transparent;border:1.5px solid var(--line);border-radius:var(--radius);
  font-size:13px;color:var(--ink);cursor:pointer;
}
.menu-bars{display:inline-flex;flex-direction:column;gap:3px}
.menu-bars i{display:block;width:16px;height:1.6px;background:var(--ink)}
.drawer{
  position:fixed;inset:0;z-index:90;
  display:flex;flex-direction:column;
  background:var(--paper);
  padding:20px;
  opacity:0;pointer-events:none;transform:translateY(-10px);
  transition:opacity .22s ease,transform .22s ease;
}
.drawer.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;line-height:1;
  background:transparent;border:1.5px solid var(--line);border-radius:var(--radius);
  font-size:22px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:20px 0;gap:2px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;color:var(--ink);
  border-bottom:1px solid rgba(216,209,194,.6);
}
.drawer-nav a:hover{color:var(--accent)}
.drawer-cta{margin-top:auto;padding-top:20px}
.drawer-cta .btn{width:100%}
@media (max-width:900px){
  .nav-desktop{display:none}
  .nav-mobile{display:flex}
  .brand{align-items:flex-start;text-align:left;padding-left:0}
}

/* ---------- article ---------- */
.article-hero{padding:34px 0 0}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  white-space:nowrap;overflow:hidden;
}
.breadcrumb a{transition:color .18s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .crumb-sep{color:var(--line)}
.breadcrumb .crumb-now{
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:46ch;color:var(--ink-soft);
}
.article-head{
  max-width:820px;margin:22px auto 0;
  padding-bottom:26px;border-bottom:1px solid var(--line);
}
.badge{
  display:inline-block;
  padding:4px 10px;border-radius:2px;
  background:var(--jade);color:#F5F2EA;
  font-size:12px;letter-spacing:.06em;line-height:1.6;
}
.badge-soft{background:var(--paper-2);color:var(--jade)}
.article-head h1{
  margin:16px 0 12px;
  font-family:var(--serif);
  font-size:clamp(1.75rem,3.2vw,2.6rem);
  font-weight:800;line-height:1.26;letter-spacing:-.01em;
}
.article-lead{font-size:15px;line-height:1.85;color:var(--muted);max-width:64ch}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  margin-top:18px;
  font-family:var(--mono);font-size:13px;color:var(--muted);
}
.article-meta .dot{color:var(--line)}
.article-cover{
  max-width:820px;margin:26px auto 0;
}
.article-cover img{
  width:100%;aspect-ratio:16/7;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--paper-2);
}
.article-cover figcaption{
  margin-top:8px;font-size:12px;color:var(--muted);
}
.article-section{padding:44px 0 64px}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--ink-soft);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  margin:2em 0 .8em;padding-left:14px;
  font-family:var(--serif);
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:800;line-height:1.35;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;
  width:3px;height:18px;background:var(--accent);
}
.article-body h3{
  margin:1.6em 0 .6em;
  font-size:1.2rem;font-weight:700;color:var(--ink);
}
.article-body h4{margin:1.4em 0 .5em;font-size:1.05rem;font-weight:700;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;line-height:1.85}
.article-body li{margin-bottom:.4em}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;
  border-left:3px solid var(--accent);
  background:var(--paper-2);border-radius:var(--radius);
  color:var(--ink-soft);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;height:auto;margin:1.6em 0;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);
}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body strong{color:var(--ink)}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  font-size:15px;background:transparent;
}
.article-body th,.article-body td{
  padding:10px 12px;text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body thead th{border-bottom:2px solid var(--ink);font-weight:700;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-actions{
  max-width:760px;margin:46px auto 0;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.action-left{display:flex;flex-wrap:wrap;gap:12px}
.action-right{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.next-links{
  max-width:760px;margin:34px auto 0;
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.next-link{
  display:flex;flex-direction:column;gap:8px;
  padding:18px 20px;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.next-link:hover{border-color:rgba(22,23,27,.35);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.next-label{font-size:12px;letter-spacing:.1em;color:var(--accent)}
.next-title{
  font-family:var(--serif);font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  max-width:760px;margin:0 auto;padding:56px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius);background:rgba(234,229,217,.4);
}
.empty-state h2{
  margin:0 0 12px;font-family:var(--serif);font-size:clamp(1.4rem,2.2vw,1.8rem);font-weight:800;color:var(--ink);
}
.empty-state p{margin:0 0 22px;font-size:15px;color:var(--muted)}

/* ---------- related ---------- */
.related{padding:64px 0;background:var(--paper-2);border-top:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:28px;flex-wrap:wrap;
}
.section-head h2{
  margin:0;font-family:var(--serif);
  font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;color:var(--ink);
}
.text-link{
  font-size:14px;color:var(--ink-soft);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.text-link:hover{color:var(--accent);border-bottom:2px solid var(--accent)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-item{
  display:flex;gap:16px;padding:20px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.related-item:hover{border-color:rgba(22,23,27,.35);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.related-item:hover .related-title{color:var(--accent)}
.related-num{font-family:var(--mono);font-size:26px;font-weight:600;line-height:1;color:var(--accent);opacity:.9}
.related-body{display:flex;flex-direction:column;gap:10px}
.related-title{
  font-family:var(--serif);font-size:16px;font-weight:700;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.back-row{display:flex;justify-content:center;padding:36px 0 0}
.back-link{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;
  font-size:14px;color:var(--ink-soft);padding:0 4px;
  border-bottom:1px solid var(--line);transition:color .18s ease,border-color .18s ease,gap .18s ease;
}
.back-link:hover{color:var(--accent);border-bottom:2px solid var(--accent);gap:12px}

/* ---------- cta ---------- */
.cta-band{
  position:relative;margin-top:56px;
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:var(--paper);padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(22,23,27,.96),rgba(22,23,27,.78));
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-text h2{
  margin:0 0 10px;font-family:var(--serif);
  font-size:clamp(1.6rem,2.8vw,2.25rem);font-weight:800;line-height:1.25;color:#F5F2EA;
}
.cta-text p{margin:0;font-size:15px;line-height:1.8;color:#BFB9AB;max-width:48ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#E9E3D6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand-main{font-family:var(--serif);font-size:22px;font-weight:800;color:#F5F2EA;letter-spacing:.03em}
.footer-brand-sub{font-size:11px;letter-spacing:.3em;color:#9A968C;margin-top:6px}
.footer-desc{font-size:13px;line-height:1.9;color:#A9A59B;margin-top:14px;max-width:34ch}
.footer-col-title{font-size:12px;letter-spacing:.14em;color:#9A968C;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#DAD4C7;transition:color .18s ease}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(245,242,234,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#9A968C;
}
.footer-bottom a{transition:color .18s ease}
.footer-bottom a:hover{color:var(--accent)}

@media (max-width:1024px){
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .article-section{padding:34px 0 48px}
  .article-body{font-size:16px;line-height:1.85}
  .next-links{grid-template-columns:1fr}
  .article-actions{align-items:flex-start}
  .cta-band{padding:44px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .related{padding:48px 0}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:8px}
  .footer-col{padding-bottom:20px;border-bottom:1px solid rgba(245,242,234,.12)}
  .footer-col:last-child{border-bottom:0}
  .article-head h1{font-size:1.6rem}
  .action-left{width:100%}
  .action-left .btn{flex:1 1 auto}
  .breadcrumb .crumb-now{max-width:24ch}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .btn:hover,.related-item:hover,.next-link:hover{transform:none}
}

/* roulang page: category1 */
:root{
    --paper:#F5F2EA;
    --paper-2:#EAE5D9;
    --ink:#16171B;
    --accent:#E4572E;
    --accent-dark:#C4431F;
    --teal:#26433F;
    --muted:#6B6C70;
    --line:#D8D1C2;
    --radius:4px;
    --serif:"Noto Serif SC","Songti SC",Georgia,serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    --mono:ui-monospace,Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:800;letter-spacing:-.01em;line-height:1.2;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(245,242,234,.95);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.scrolled{box-shadow:0 10px 28px -18px rgba(22,23,27,.45);}
  .nav-desktop{
    display:grid;grid-template-columns:1fr auto 1fr;
    align-items:center;gap:24px;min-height:76px;
  }
  .nav-left{display:flex;align-items:center;gap:26px;}
  .nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    min-height:44px;padding:10px 0;font-size:14px;color:var(--ink);
    transition:color .18s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:6px;width:0;height:2px;
    background:var(--accent);transition:width .18s ease;
  }
  .nav-link:hover{color:var(--accent);}
  .nav-link:hover::after{width:100%;}
  .nav-link.active{color:var(--accent);}
  .nav-link.active::after{width:100%;}
  .brand{display:inline-flex;flex-direction:column;align-items:center;gap:2px;line-height:1.1;}
  .brand-main{font-family:var(--serif);font-size:19px;font-weight:800;letter-spacing:.05em;}
  .brand-sub{font-size:11px;letter-spacing:.24em;color:var(--muted);}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;border-radius:var(--radius);
    font-size:14px;font-weight:500;line-height:1;text-align:center;
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  }
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--ink);border:1.5px solid #C9C1B0;}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
  .btn-sm{padding:0 16px;font-size:13px;min-height:40px;}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--ink);padding-bottom:2px;
    border-bottom:1px solid var(--ink);
    transition:color .18s ease,border-color .18s ease;
  }
  .text-link:hover{color:var(--accent);border-color:var(--accent);}
  .text-link .arw{transition:transform .18s ease;}
  .text-link:hover .arw{transform:translateX(4px);}

  /* ---------- mobile nav ---------- */
  .nav-mobile{display:none;align-items:center;justify-content:space-between;min-height:66px;}
  .menu-toggle{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:14px;padding:0 4px;}
  .menu-bars{display:inline-flex;flex-direction:column;gap:4px;width:18px;}
  .menu-bars i{display:block;height:1.5px;background:var(--ink);border-radius:1px;}
  .drawer{
    position:fixed;inset:0;z-index:120;
    display:flex;flex-direction:column;
    background:var(--paper);padding:18px 20px 32px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .drawer.open{opacity:1;visibility:visible;transform:none;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
  .drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:26px;line-height:1;}
  .drawer-nav{display:flex;flex-direction:column;margin-top:6px;}
  .drawer-nav a{
    display:flex;align-items:center;min-height:44px;padding:15px 0;
    font-size:17px;border-bottom:1px solid var(--line);transition:color .18s ease;
  }
  .drawer-nav a:hover,.drawer-nav a.active{color:var(--accent);}
  .drawer-cta{margin-top:auto;padding-top:26px;}
  .drawer-cta .btn{width:100%;}

  /* ---------- hero ---------- */
  .hero{padding:54px 0 46px;border-bottom:1px solid var(--line);}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
  .eyebrow{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:16px;}
  .hero h1{font-family:var(--serif);font-size:clamp(1.875rem,3.6vw,3rem);line-height:1.16;letter-spacing:-.01em;}
  .hero-desc{margin-top:18px;font-size:16px;line-height:1.85;color:var(--muted);max-width:52ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-meta{display:flex;flex-wrap:wrap;margin-top:32px;padding-top:18px;border-top:1px solid var(--line);}
  .hero-meta span{font-size:13px;color:var(--muted);padding:0 18px;border-left:1px solid var(--line);line-height:1.6;}
  .hero-meta span:first-child{padding-left:0;border-left:0;}
  .hero-figure{
    position:relative;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;background:var(--paper-2);
  }
  .hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .22s ease;}
  .hero-figure:hover img{transform:scale(1.02);}
  .hero-tag{
    position:absolute;left:14px;top:14px;
    background:rgba(22,23,27,.82);color:var(--paper);
    font-size:12px;letter-spacing:.06em;padding:6px 10px;border-radius:2px;
  }

  /* ---------- sections ---------- */
  .section{padding:64px 0;}
  .section--alt{background:var(--paper-2);}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:24px;flex-wrap:wrap;margin-bottom:34px;
  }
  .section-head h2{font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);}
  .section-head p{font-size:14px;line-height:1.8;color:var(--muted);max-width:46ch;}

  /* ---------- steps ---------- */
  .step-list{border-top:1px solid var(--line);}
  .step-item{
    display:grid;grid-template-columns:100px 1fr;gap:28px;
    padding:30px 0;border-bottom:1px solid var(--line);
    transition:background .18s ease;
  }
  .step-num{
    font-family:var(--mono);font-size:42px;font-weight:600;line-height:1;
    color:rgba(22,23,27,.18);transition:color .18s ease;
  }
  .step-item:hover .step-num{color:var(--accent);}
  .step-body h3{font-family:var(--serif);font-size:1.2rem;margin-bottom:10px;}
  .step-body p{font-size:15px;line-height:1.85;color:var(--muted);max-width:68ch;}
  .step-body .text-link{margin-top:14px;}

  /* ---------- cards ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .card{
    background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  }
  .card:hover{
    border-color:rgba(22,23,27,.3);
    box-shadow:0 14px 36px -12px rgba(22,23,27,.18);
    transform:translateY(-2px);
  }
  .card h3{font-family:var(--serif);font-size:1.05rem;margin-bottom:10px;}
  .card p{font-size:14px;line-height:1.85;color:var(--muted);}
  .badge{
    display:inline-block;background:var(--teal);color:#F5F2EA;
    font-size:12px;letter-spacing:.04em;padding:3px 9px;border-radius:2px;
  }
  .card .badge{margin-bottom:14px;}

  /* ---------- media cards ---------- */
  .media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .media-card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .media-card:hover{border-color:rgba(22,23,27,.3);box-shadow:0 14px 36px -12px rgba(22,23,27,.18);}
  .media-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .22s ease;}
  .media-card:hover img{transform:scale(1.03);}
  .media-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .media-body h3{font-family:var(--serif);font-size:1.05rem;}
  .media-body p{font-size:14px;line-height:1.8;color:var(--muted);}
  .media-body .text-link{margin-top:auto;font-size:13px;}

  /* ---------- flow ---------- */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .flow-step{
    border:1px solid var(--line);border-radius:var(--radius);
    background:var(--paper);padding:22px;
    transition:border-color .2s ease,transform .2s ease;
  }
  .flow-step:hover{border-color:rgba(22,23,27,.3);transform:translateY(-2px);}
  .flow-step .f-num{
    display:block;font-family:var(--mono);font-size:13px;
    color:var(--accent);letter-spacing:.06em;margin-bottom:12px;
  }
  .flow-step h3{font-family:var(--serif);font-size:1rem;margin-bottom:8px;}
  .flow-step p{font-size:13px;line-height:1.8;color:var(--muted);}

  /* ---------- faq ---------- */
  .faq{max-width:860px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;
    gap:16px;padding:18px 0;min-height:44px;text-align:left;
    font-size:16px;font-weight:500;line-height:1.6;
    transition:color .18s ease;
  }
  .faq-q:hover{color:var(--accent);}
  .faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;color:currentColor;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:currentColor;
    transition:transform .26s ease,opacity .26s ease;
  }
  .faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px;}
  .faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px;}
  .faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
  .faq-item.open .faq-q{color:var(--accent);}
  .faq-panel{max-height:0;overflow:hidden;transition:max-height .26s ease;}
  .faq-panel p{
    font-size:15px;line-height:1.85;color:var(--muted);
    padding:0 0 20px;max-width:72ch;
  }

  /* ---------- cta ---------- */
  .cta-band{
    position:relative;color:var(--paper);
    background:var(--ink) url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
    padding:58px 0;overflow:hidden;
  }
  .cta-band::before{content:"";position:absolute;inset:0;background:rgba(22,23,27,.86);}
  .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-inner h2{font-family:var(--serif);font-size:clamp(1.5rem,3vw,2.1rem);color:var(--paper);}
  .cta-inner p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(245,242,234,.72);max-width:48ch;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-band .btn-ghost{color:var(--paper);border-color:rgba(245,242,234,.42);}
  .cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

  /* ---------- recommend ---------- */
  .rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .rec-item{border-top:2px solid var(--ink);padding-top:18px;transition:border-color .18s ease;}
  .rec-item:hover{border-color:var(--accent);}
  .rec-num{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.08em;}
  .rec-item h3{font-family:var(--serif);font-size:1.05rem;margin:10px 0 8px;}
  .rec-item p{font-size:13px;line-height:1.8;color:var(--muted);}

  /* ---------- breadcrumb ---------- */
  .crumb{padding:18px 0 0;font-size:13px;color:var(--muted);}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
  .crumb li{display:flex;align-items:center;gap:8px;}
  .crumb li+li::before{content:"/";color:var(--line);}
  .crumb a{transition:color .18s ease;}
  .crumb a:hover{color:var(--accent);}
  .crumb .now{color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw;}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:#EDE8DC;padding:56px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand-main{font-family:var(--serif);font-size:20px;font-weight:800;letter-spacing:.05em;color:var(--paper);}
  .footer-brand-sub{font-size:11px;letter-spacing:.24em;color:rgba(245,242,234,.55);margin-top:4px;}
  .footer-desc{font-size:13px;line-height:1.9;color:rgba(245,242,234,.6);margin-top:14px;}
  .footer-col-title{font-size:12px;letter-spacing:.14em;color:rgba(245,242,234,.5);margin-bottom:14px;}
  .footer-links{display:flex;flex-direction:column;}
  .footer-links a{font-size:14px;line-height:2.2;color:rgba(245,242,234,.85);transition:color .18s ease;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(245,242,234,.16);
    font-size:13px;color:rgba(245,242,234,.55);
  }
  .footer-bottom a{transition:color .18s ease;}
  .footer-bottom a:hover{color:var(--accent);}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.7,.28,1),transform .5s cubic-bezier(.22,.7,.28,1);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .nav-desktop{display:none;}
    .nav-mobile{display:flex;}
    .hero{padding:34px 0 32px;}
    .hero-grid{grid-template-columns:1fr;gap:30px;}
    .hero-figure{order:2;}
    .card-grid,.media-grid,.rec-grid{grid-template-columns:repeat(2,1fr);}
    .flow{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (min-width:1024px){
    .drawer{display:none;}
  }
  @media (max-width:767px){
    .section{padding:48px 0;}
    .step-item{grid-template-columns:1fr;gap:10px;padding:26px 0;}
    .step-num{font-size:32px;}
    .card-grid,.media-grid,.rec-grid,.flow{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-col{border-top:1px solid rgba(245,242,234,.14);padding-top:20px;}
    .footer-col:first-child{border-top:0;padding-top:0;}
    .hero-meta span{padding:0 12px;font-size:12px;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .crumb .now{max-width:46vw;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

.reveal{opacity:1;transform:none;}

/* roulang page: category3 */
:root{
  --ink:#16171B;
  --paper:#F5F2EA;
  --paper-2:#EAE5D9;
  --accent:#E4572E;
  --accent-deep:#C4431F;
  --pine:#26433F;
  --muted:#6B6C70;
  --line:#D8D1C2;
  --ok:#3F6B4E;
  --warn:#8A6A22;
  --radius:4px;
  --shadow-hover:0 14px 36px -12px rgba(22,23,27,.18);
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body#top{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,dl,dd,figure,ol,ul{margin:0}
ul,ol{list-style:none;padding:0}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
section[id]{scroll-margin-top:96px}

/* 容器 */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,242,234,.94);border-bottom:1px solid var(--line);transition:background .2s ease,box-shadow .2s ease}
.site-header.scrolled{background:rgba(245,242,234,.98);box-shadow:0 10px 26px -22px rgba(22,23,27,.6)}
.nav-desktop{display:none;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;height:78px}
@media (min-width:1024px){.nav-desktop{display:grid}}
.nav-left{display:flex;align-items:center;gap:26px}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:22px}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--ink);transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left center;transition:transform .2s ease}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent);font-weight:600}
.brand{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.1;text-align:center}
.brand-main{font-family:var(--serif);font-size:19px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:4px}
.nav-mobile{display:flex;align-items:center;justify-content:space-between;height:64px}
@media (min-width:1024px){.nav-mobile{display:none}}
.menu-toggle{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius);font-size:13px;transition:border-color .2s ease,color .2s ease}
.menu-toggle:hover{border-color:var(--ink);color:var(--accent)}
.menu-bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.menu-bars i{display:block;height:1.5px;background:currentColor;border-radius:1px}
.drawer{position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;padding:20px;background:var(--paper);transform:translateY(-100%);transition:transform .3s cubic-bezier(.22,.7,.28,1);overflow-y:auto}
.drawer.open{transform:translateY(0)}
@media (min-width:1024px){.drawer{display:none}}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-close{min-height:44px;min-width:44px;font-size:26px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;margin-top:6px}
.drawer-nav a{padding:16px 0;border-bottom:1px solid var(--line);font-size:16px;transition:color .2s ease}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);font-weight:600}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;border:1.5px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px)}
.btn-paper{background:var(--paper);color:var(--ink)}
.btn-paper:hover{background:#fff;transform:translateY(-1px)}
.btn-outline-paper{border-color:rgba(245,242,234,.42);color:var(--paper)}
.btn-outline-paper:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-sm{min-height:38px;padding:7px 14px;font-size:13px}
.btn-block{width:100%}

/* 面包屑 */
.crumb{padding-top:22px;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink);font-weight:600}

/* 页头 */
.page-hero{padding:34px 0 6px}
.hero-grid{display:grid;gap:30px}
@media (min-width:900px){.hero-grid{grid-template-columns:1.32fr 1fr;align-items:center;gap:56px}}
.eyebrow{display:inline-block;padding:4px 10px;border-radius:2px;background:var(--pine);color:var(--paper);font-size:12px;letter-spacing:.14em}
.page-h1{margin-top:16px;font-family:var(--serif);font-size:clamp(1.875rem,3.6vw,3rem);font-weight:900;line-height:1.18;letter-spacing:-.01em}
.hero-sub{margin-top:16px;color:var(--muted);font-size:16px;max-width:46ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.meta-line{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.meta-line span+span{border-left:1px solid var(--line);padding-left:14px}
.hero-figure{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-2)}
.hero-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .22s ease}
.hero-figure:hover img{transform:scale(1.02)}
.hero-figure figcaption{position:absolute;left:12px;bottom:12px;padding:5px 10px;border-radius:2px;background:rgba(22,23,27,.74);color:var(--paper);font-size:12px;letter-spacing:.02em}

/* 板块 */
.section{padding:52px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:92px 0}}
.section-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:640px}
.section-title{font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;line-height:1.26;letter-spacing:-.01em}
.section-lead{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.85}
.section-tail{margin-top:16px;font-size:13px;color:var(--muted)}

/* 双栏 */
.split{display:grid;gap:44px}
@media (min-width:960px){.split{grid-template-columns:1.05fr .95fr;gap:64px;align-items:start}}

/* 术语列表 */
.term-list{margin-top:28px;border-top:1px solid var(--line)}
.term-item{padding:18px 0;border-bottom:1px solid var(--line);transition:border-color .2s ease}
.term-item dt{font-family:var(--serif);font-size:18px;font-weight:700;transition:color .2s ease}
.term-item dd{margin-top:8px;color:var(--muted);font-size:15px;line-height:1.85}
.term-item:hover dt{color:var(--accent)}
.term-item:hover{border-bottom-color:rgba(22,23,27,.32)}

/* 折叠组件 */
.acc{margin-top:24px;border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-q{display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;padding:17px 0;text-align:left;font-size:15px;font-weight:600;line-height:1.6;transition:color .2s ease}
.acc-q:hover{color:var(--accent)}
.acc-icon{position:relative;flex:0 0 18px;width:18px;height:18px;border:1.5px solid currentColor;border-radius:2px;transition:border-color .2s ease}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:currentColor;transition:transform .26s ease,opacity .26s ease}
.acc-icon::before{left:3px;right:3px;top:50%;height:1.5px;margin-top:-.75px}
.acc-icon::after{top:3px;bottom:3px;left:50%;width:1.5px;margin-left:-.75px}
.acc-item.open .acc-icon::after{transform:scaleY(0);opacity:0}
.acc-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.acc-a-inner{padding:0 2px 18px;color:var(--muted);font-size:14.5px;line-height:1.85}
.acc-a-inner strong{color:var(--ink);font-weight:600}

/* 表格 */
.table-scroll{margin-top:28px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:660px;border-collapse:collapse;font-size:14.5px}
.compare-table thead th{padding:14px 18px;text-align:left;font-family:var(--serif);font-size:15px;font-weight:700;border-bottom:2px solid var(--ink);white-space:nowrap}
.compare-table tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--muted);line-height:1.7;vertical-align:top}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
.compare-table tbody tr{transition:background .2s ease}
.compare-table tbody tr:hover{background:rgba(228,87,46,.06)}
.table-note{margin-top:14px;font-size:13px;color:var(--muted)}

/* 步骤 */
.step-list{display:grid;gap:18px;margin-top:28px}
@media (min-width:768px){.step-list{grid-template-columns:repeat(3,1fr);gap:24px}}
.step{padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.step:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.step-num{display:block;font-family:var(--mono);font-size:38px;font-weight:600;line-height:1;color:var(--accent);opacity:.3}
.step h3{margin-top:14px;font-family:var(--serif);font-size:18px;font-weight:700;line-height:1.4}
.step p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* FAQ */
.faq-layout{display:grid;gap:32px}
@media (min-width:960px){.faq-layout{grid-template-columns:.62fr 1fr;gap:64px;align-items:start}}
.faq{margin-top:22px;border-top:1px solid var(--line)}
.faq .acc-q{padding:18px 0;font-size:16px}
.faq .acc-a-inner{margin-bottom:16px;padding:14px 16px;background:var(--paper-2);border-radius:var(--radius);border-left:3px solid var(--accent)}

/* 跨分类推荐 */
.cross-grid{display:grid;gap:18px;margin-top:28px}
@media (min-width:768px){.cross-grid{grid-template-columns:repeat(3,1fr);gap:22px}}
.cross-card{display:flex;flex-direction:column;gap:10px;padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.cross-card:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.cross-card h3{font-family:var(--serif);font-size:19px;font-weight:700;transition:color .2s ease}
.cross-card:hover h3{color:var(--accent)}
.cross-card p{font-size:14px;color:var(--muted);line-height:1.8}
.cross-tag{align-self:flex-start;padding:3px 8px;border-radius:2px;background:var(--pine);color:var(--paper);font-size:12px;letter-spacing:.06em}
.cross-arrow{margin-top:auto;display:inline-flex;align-items:center;gap:6px;padding-top:8px;font-size:13px;font-weight:600;color:var(--accent);transition:transform .2s ease}
.cross-card:hover .cross-arrow{transform:translateX(4px)}

/* CTA */
.cta-band{background:var(--ink);color:var(--paper);padding:52px 0}
@media (min-width:768px){.cta-band{padding:72px 0}}
.cta-inner{display:grid;gap:26px}
@media (min-width:880px){.cta-inner{grid-template-columns:1fr auto;align-items:center;gap:56px}}
.cta-title{font-family:var(--serif);font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.3}
.cta-desc{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(245,242,234,.74);max-width:54ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:879px){.cta-actions .btn{flex:1 1 100%}}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding-top:54px}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand-main{font-family:var(--serif);font-size:20px;font-weight:800}
.footer-brand-sub{margin-top:4px;font-size:11px;letter-spacing:.14em;color:rgba(245,242,234,.6)}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.85;color:rgba(245,242,234,.66)}
.footer-col-title{margin-bottom:12px;font-size:12px;letter-spacing:.14em;color:rgba(245,242,234,.55)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{display:inline-block;font-size:14px;line-height:2;color:rgba(245,242,234,.86);transition:color .2s ease}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{margin-top:40px;padding:18px 0;border-top:1px solid rgba(245,242,234,.14);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(245,242,234,.6)}
.footer-bottom a{transition:color .2s ease}
.footer-bottom a:hover{color:var(--accent)}

/* 动效收敛 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.7,.28,1),transform .5s cubic-bezier(.22,.7,.28,1)}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}
@media (max-width:520px){
  .page-h1{font-size:1.75rem}
  .hero-sub{font-size:15px}
  .meta-line{font-size:11px;gap:10px}
  .meta-line span+span{padding-left:10px}
  .step{padding:20px}
}

/* roulang page: category2 */
:root{
    --paper:#F5F2EA;
    --paper-2:#EAE5D9;
    --ink:#16171B;
    --accent:#E4572E;
    --accent-deep:#C4431F;
    --pine:#26433F;
    --muted:#6B6C70;
    --line:#D8D1C2;
    --radius:4px;
    --serif:"Noto Serif SC","Songti SC",serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
    --shadow-hover:0 14px 36px -12px rgba(22,23,27,.18);
    --ease:cubic-bezier(.22,.7,.28,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:var(--sans);font-size:16px;line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{list-style:none;margin:0;padding:0;}
  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;
  }
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }

  /* ===== 头部导航 ===== */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(245,242,234,.94);
    border-bottom:1px solid transparent;
    transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  }
  .site-header.is-scrolled{
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px -22px rgba(22,23,27,.7);
    background:rgba(245,242,234,.97);
  }
  .nav-desktop{display:flex;align-items:center;justify-content:space-between;gap:20px;height:78px;}
  .nav-left,.nav-right{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0;}
  .nav-right{justify-content:flex-end;gap:22px;}
  .nav-link{
    position:relative;font-size:14px;color:var(--ink);padding:9px 0;
    transition:color .2s ease;white-space:nowrap;letter-spacing:.02em;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:1px;width:0;height:2px;
    background:var(--accent);transition:width .22s var(--ease);
  }
  .nav-link:hover{color:var(--accent);}
  .nav-link:hover::after{width:100%;}
  .nav-link.active{color:var(--accent);font-weight:500;}
  .nav-link.active::after{width:100%;}
  .brand{display:flex;flex-direction:column;align-items:center;line-height:1.1;flex:0 0 auto;padding:4px 8px;}
  .brand-main{font-family:var(--serif);font-size:20px;font-weight:800;letter-spacing:.1em;color:var(--ink);}
  .brand-sub{font-size:10px;letter-spacing:.32em;color:var(--muted);margin-top:5px;}
  .nav-mobile{display:none;align-items:center;justify-content:space-between;gap:12px;height:64px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:11px 22px;border-radius:var(--radius);
    font-size:14px;font-weight:500;border:1.5px solid transparent;cursor:pointer;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{border-color:var(--line);color:var(--ink);background:transparent;}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
  .btn-sm{padding:9px 16px;min-height:40px;font-size:13px;}
  .btn-light{background:var(--paper);color:var(--ink);}
  .btn-light:hover{background:#fff;transform:translateY(-1px);}
  .btn-outline-light{border-color:rgba(245,242,234,.36);color:var(--paper);background:transparent;}
  .btn-outline-light:hover{border-color:var(--paper);background:rgba(245,242,234,.1);}

  .menu-toggle{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink);
    background:transparent;border:1px solid var(--line);border-radius:var(--radius);
    padding:10px 14px;min-height:44px;cursor:pointer;transition:border-color .2s,color .2s;
  }
  .menu-toggle:hover{border-color:var(--ink);}
  .menu-bars{display:flex;flex-direction:column;gap:3px;}
  .menu-bars i{display:block;width:16px;height:1.5px;background:currentColor;}

  .drawer{
    position:fixed;inset:0;z-index:120;background:var(--paper);
    display:flex;flex-direction:column;
    padding:0 20px 32px;overflow-y:auto;
    transform:translateX(100%);transition:transform .3s var(--ease);
    visibility:hidden;
  }
  .drawer.open{transform:translateX(0);visibility:visible;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;flex:0 0 auto;}
  .drawer-close{
    background:transparent;border:1px solid var(--line);border-radius:var(--radius);
    width:44px;height:44px;font-size:22px;line-height:1;color:var(--ink);cursor:pointer;
  }
  .drawer-nav{display:flex;flex-direction:column;margin-top:16px;}
  .drawer-nav a{
    font-family:var(--serif);font-size:17px;padding:15px 0;
    border-bottom:1px solid var(--line);transition:color .2s;
  }
  .drawer-nav a:hover{color:var(--accent);}
  .drawer-cta{margin-top:28px;}
  .drawer-cta .btn{width:100%;}

  @media (max-width:920px){
    .nav-desktop{display:none;}
    .nav-mobile{display:flex;}
  }

  /* ===== 页面头部 ===== */
  .page-head{
    position:relative;overflow:hidden;
    background:var(--paper) url('/assets/images/backpic/back-1.webp') right center/cover no-repeat;
    padding:34px 0 40px;
    border-bottom:1px solid var(--line);
  }
  .page-head::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(245,242,234,.98) 0%,rgba(245,242,234,.94) 44%,rgba(245,242,234,.42) 100%);
  }
  .page-head .wrap{position:relative;z-index:1;}
  .crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:28px;}
  .crumbs a{color:var(--muted);transition:color .2s;}
  .crumbs a:hover{color:var(--accent);}
  .crumbs .sep{color:var(--line);}
  .crumbs .current{color:var(--ink);}
  .page-head-inner{max-width:720px;}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:500;letter-spacing:.22em;
    color:var(--accent);margin-bottom:14px;
  }
  .page-title{
    font-family:var(--serif);font-size:clamp(1.875rem,3.6vw,3rem);
    font-weight:800;line-height:1.2;letter-spacing:-.01em;margin:0 0 16px;
  }
  .page-lede{font-size:16px;color:var(--muted);line-height:1.85;margin:0;max-width:56ch;}

  /* ===== 板块通用 ===== */
  .section{padding:56px 0;}
  @media (min-width:768px){ .section{padding:80px 0;} }
  .section--alt{background:var(--paper-2);}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:24px;flex-wrap:wrap;margin-bottom:36px;
  }
  .section-head h2{
    font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);
    font-weight:800;line-height:1.28;margin:0;letter-spacing:-.01em;
  }
  .section-sub{font-size:14px;color:var(--muted);line-height:1.85;margin:10px 0 0;max-width:56ch;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--ink);
    border-bottom:1px solid var(--line);padding-bottom:3px;
    transition:color .2s,border-color .2s;
  }
  .link-arrow i{transition:transform .2s var(--ease);font-size:12px;}
  .link-arrow:hover{color:var(--accent);border-color:var(--accent);}
  .link-arrow:hover i{transform:translateX(4px);}

  /* ===== 大封面专题卡 ===== */
  .feature{
    position:relative;margin:0;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;background:var(--paper-2);
  }
  .feature img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .45s var(--ease);}
  .feature:hover img{transform:scale(1.015);}
  .feature figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:24px 20px 22px;color:#fff;
    background:linear-gradient(to top,rgba(15,16,19,.9) 0%,rgba(15,16,19,.6) 55%,rgba(15,16,19,0) 100%);
  }
  @media (min-width:768px){ .feature figcaption{padding:40px 36px 32px;} }
  .feature h2{
    font-family:var(--serif);font-size:clamp(1.25rem,2.2vw,1.85rem);
    font-weight:800;line-height:1.3;margin:12px 0 10px;color:#fff;
  }
  .feature p{margin:0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.82);max-width:64ch;}
  .badge{
    display:inline-flex;align-items:center;padding:4px 10px;border-radius:2px;
    font-size:12px;letter-spacing:.06em;background:var(--pine);color:#F5F2EA;
  }

  /* ===== 时间轴 ===== */
  .timeline{position:relative;max-width:880px;}
  .timeline::before{
    content:"";position:absolute;left:7px;top:10px;bottom:10px;
    width:1px;background:var(--line);
  }
  .tl-item{position:relative;padding:0 0 38px 40px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-dot{
    position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;
    border:1px solid var(--accent);background:var(--paper);
    transition:background .22s ease,transform .22s ease;
  }
  .tl-item:hover .tl-dot{background:var(--accent);transform:scale(1.1);}
  .tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px;}
  .tl-tag{
    font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--accent);
    border:1px solid var(--line);border-radius:2px;padding:2px 9px;background:var(--paper);
  }
  .tl-date{font-size:13px;color:var(--muted);letter-spacing:.04em;}
  .tl-item h3{
    font-family:var(--serif);font-size:1.16rem;font-weight:700;line-height:1.4;
    margin:0 0 8px;transition:color .2s ease;
  }
  .tl-item:hover h3{color:var(--accent);}
  .tl-item p{margin:0;font-size:14.5px;line-height:1.85;color:var(--muted);max-width:70ch;}

  /* ===== 项目速览矩阵 ===== */
  .matrix{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:640px){ .matrix{grid-template-columns:1fr 1fr;} }
  @media (min-width:1024px){ .matrix{grid-template-columns:repeat(3,1fr);} }
  .matrix-item{
    background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px 22px;
    transition:border-color .22s,box-shadow .22s,transform .22s;
  }
  .matrix-item:hover{
    border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px);
  }
  .matrix-icon{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    border-radius:var(--radius);background:var(--paper-2);color:var(--pine);
    font-size:16px;margin-bottom:16px;transition:background .22s,color .22s;
  }
  .matrix-item:hover .matrix-icon{background:var(--pine);color:var(--paper);}
  .matrix-item h3{font-family:var(--serif);font-size:1.06rem;font-weight:700;margin:0 0 8px;}
  .matrix-item p{margin:0 0 16px;font-size:14px;line-height:1.8;color:var(--muted);}
  .matrix-count{
    font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
    display:inline-flex;align-items:center;gap:6px;
  }
  .matrix-count::before{content:"";width:14px;height:1px;background:var(--line);}

  /* ===== 数据条 ===== */
  .statbar{
    display:grid;grid-template-columns:1fr 1fr;gap:24px 0;
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:26px 0;
  }
  @media (min-width:768px){
    .statbar{grid-template-columns:repeat(4,1fr);gap:0;}
  }
  .stat{padding:0 20px;}
  @media (min-width:768px){ .stat{border-left:1px solid var(--line);} .stat:first-child{border-left:0;padding-left:0;} }
  @media (max-width:767px){ .stat{padding:0;} }
  .stat b{
    display:block;font-family:var(--mono);font-weight:600;
    font-size:clamp(1.5rem,3vw,2rem);line-height:1.1;color:var(--ink);letter-spacing:-.02em;
  }
  .stat span{display:block;font-size:13px;color:var(--muted);margin-top:8px;}

  /* ===== FAQ ===== */
  .faq-list{border-top:1px solid var(--line);max-width:880px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:transparent;border:0;padding:20px 0;text-align:left;
    font-family:var(--sans);font-size:16px;font-weight:500;color:var(--ink);
    cursor:pointer;min-height:44px;transition:color .2s ease;
  }
  .faq-q:hover{color:var(--accent);}
  .faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px;color:var(--accent);}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:currentColor;
    transition:transform .26s var(--ease),opacity .26s var(--ease);
  }
  .faq-icon::before{left:0;top:7px;width:16px;height:1.5px;}
  .faq-icon::after{left:7px;top:0;width:1.5px;height:16px;}
  .faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
  .faq-a-inner{
    margin:0 0 20px;padding:16px 18px;background:var(--paper-2);
    border-radius:var(--radius);font-size:14.5px;line-height:1.85;color:var(--ink);
  }

  /* ===== CTA 反色带 ===== */
  .cta-band{background:var(--ink);color:var(--paper);padding:56px 0;}
  @media (min-width:768px){ .cta-band{padding:76px 0;} }
  .cta-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:28px;flex-wrap:wrap;
  }
  .cta-text{flex:1 1 380px;min-width:0;}
  .cta-band h2{
    font-family:var(--serif);font-size:clamp(1.5rem,3vw,2.25rem);
    font-weight:800;line-height:1.25;margin:0 0 12px;color:#fff;
  }
  .cta-band p{margin:0;font-size:14.5px;line-height:1.85;color:rgba(245,242,234,.72);max-width:46ch;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}
  @media (max-width:520px){ .cta-actions{width:100%;} .cta-actions .btn{flex:1 1 100%;} }

  /* ===== 跨栏目推荐 ===== */
  .cross-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:768px){ .cross-grid{grid-template-columns:repeat(3,1fr);} }
  .cross-card{
    display:block;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px 22px;background:var(--paper);
    transition:border-color .22s,box-shadow .22s,transform .22s;
  }
  .cross-card:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
  .cross-card .idx{
    font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--accent);
    display:block;margin-bottom:12px;
  }
  .cross-card h3{font-family:var(--serif);font-size:1.1rem;font-weight:700;margin:0 0 8px;transition:color .2s;}
  .cross-card:hover h3{color:var(--accent);}
  .cross-card p{margin:0 0 16px;font-size:14px;line-height:1.8;color:var(--muted);}
  .cross-card .go{font-size:13px;color:var(--ink);display:inline-flex;align-items:center;gap:6px;}
  .cross-card .go i{transition:transform .2s var(--ease);font-size:11px;}
  .cross-card:hover .go i{transform:translateX(4px);}

  /* ===== 页脚 ===== */
  .site-footer{background:var(--ink);color:rgba(245,242,234,.82);padding:56px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:0;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;} }
  .footer-col{padding:26px 0;border-bottom:1px solid rgba(245,242,234,.13);}
  @media (min-width:768px){ .footer-col{padding:0;border-bottom:0;} }
  .footer-col:first-child{padding-top:0;}
  .footer-col:last-child{border-bottom:0;padding-bottom:0;}
  .footer-brand-main{font-family:var(--serif);font-size:20px;font-weight:800;letter-spacing:.1em;color:#fff;}
  .footer-brand-sub{font-size:10px;letter-spacing:.32em;color:rgba(245,242,234,.5);margin-top:5px;}
  .footer-desc{font-size:13.5px;line-height:1.9;color:rgba(245,242,234,.62);margin:16px 0 0;max-width:34ch;}
  .footer-col-title{font-size:12px;letter-spacing:.16em;color:rgba(245,242,234,.45);margin-bottom:14px;}
  .footer-links{display:flex;flex-direction:column;gap:2px;}
  .footer-links a{
    font-size:14px;line-height:2.2;color:rgba(245,242,234,.82);
    transition:color .2s ease;width:fit-content;
  }
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:40px;padding:20px 0 26px;
    border-top:1px solid rgba(245,242,234,.14);
    display:flex;align-items:center;justify-content:space-between;
    gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(245,242,234,.55);
  }
  .footer-bottom a{color:rgba(245,242,234,.72);transition:color .2s;}
  .footer-bottom a:hover{color:var(--accent);}
  .footer-bottom p{margin:0;}

  /* ===== 提示条 ===== */
  .toast{
    position:fixed;left:50%;bottom:28px;z-index:200;
    transform:translate(-50%,18px);opacity:0;pointer-events:none;
    background:var(--ink);color:var(--paper);
    padding:11px 20px;border-radius:var(--radius);font-size:14px;
    transition:opacity .25s ease,transform .25s ease;
    box-shadow:0 16px 32px -18px rgba(22,23,27,.8);
  }
  .toast.show{opacity:1;transform:translate(-50%,0);}

  /* ===== 入场动效 ===== */
  html.js [data-reveal]{
    opacity:0;transform:translateY(12px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  html.js [data-reveal].is-visible{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    html.js [data-reveal]{opacity:1;transform:none;transition:none;}
    .matrix-item,.cross-card,.feature img,.tl-dot{transition:none;}
  }

/* roulang page: category4 */
:root{
  --paper:#F5F2EA;
  --paper-2:#EAE5D9;
  --ink:#16171B;
  --accent:#E4572E;
  --accent-deep:#C4431F;
  --pine:#26433F;
  --muted:#6B6C70;
  --line:#D8D1C2;
  --ok:#3F6B4E;
  --warn:#8A6A22;
  --radius:4px;
  --shadow:0 14px 36px -12px rgba(22,23,27,.18);
  --serif:"Noto Serif SC","Songti SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(228,87,46,.22)}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,242,234,.94);
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-stuck{
  background:rgba(245,242,234,.97);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  box-shadow:0 6px 20px -14px rgba(22,23,27,.4);
}
.nav-desktop{display:none}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:6px 0;
  font-size:14px;color:var(--ink);
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{display:inline-flex;flex-direction:column;align-items:center;line-height:1.1;text-align:center}
.brand-main{
  font-family:var(--serif);font-size:22px;font-weight:800;letter-spacing:.05em;color:var(--ink);
}
.brand-sub{font-size:11px;letter-spacing:.28em;color:var(--muted);margin-top:5px}
.nav-mobile{display:flex;align-items:center;justify-content:space-between;min-height:64px}
@media (min-width:1024px){.nav-mobile{display:none}}
.menu-toggle{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 12px;background:transparent;
  border:1.5px solid var(--line);border-radius:var(--radius);
  font-size:13px;font-weight:600;cursor:pointer;transition:border-color .18s,color .18s;
}
.menu-toggle:hover{border-color:var(--ink);color:var(--accent)}
.menu-bars{display:inline-flex;flex-direction:column;gap:3px}
.menu-bars i{display:block;width:16px;height:1.5px;background:currentColor}
.drawer{
  position:fixed;inset:0;z-index:80;
  display:flex;flex-direction:column;
  padding:20px 20px 28px;
  background:var(--paper);
  transform:translateY(-100%);
  transition:transform .28s cubic-bezier(.22,.7,.28,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1.5px solid var(--line);border-radius:var(--radius);
  font-size:22px;line-height:1;cursor:pointer;transition:border-color .18s,color .18s;
}
.drawer-close:hover{border-color:var(--ink);color:var(--accent)}
.drawer-nav{display:flex;flex-direction:column;padding-top:12px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;border-bottom:1px solid var(--line);
  transition:color .18s,padding-left .18s;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);padding-left:6px;font-weight:600}
.drawer-cta{padding-top:24px}
body.no-scroll{overflow:hidden}

/* ---------- Buttons / Badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:0 15px;font-size:13px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .18s,border-color .18s;
}
.text-link:hover{color:var(--accent);border-bottom:2px solid var(--accent)}
.text-link .arrow{transition:transform .2s ease}
.text-link:hover .arrow{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 8px;border-radius:2px;
  background:var(--pine);color:#F5F2EA;
  font-size:12px;letter-spacing:.04em;line-height:1.6;
}
.badge-outline{background:transparent;color:var(--pine);border:1px solid rgba(38,67,63,.35)}
.chip{
  display:inline-flex;align-items:center;min-height:36px;
  padding:0 14px;border-radius:var(--radius);
  border:1.5px solid var(--line);background:transparent;
  font-size:13px;color:var(--muted);cursor:pointer;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-on{background:var(--pine);border-color:var(--pine);color:#F5F2EA;font-weight:600}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.22em;
  color:var(--accent);font-weight:600;text-transform:uppercase;
}

/* ---------- Breadcrumb ---------- */
.crumb{padding:18px 0 0;font-size:13px;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a{transition:color .18s}
.crumb a:hover{color:var(--accent)}
.crumb .current{color:var(--ink);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Page hero ---------- */
.page-hero{padding:26px 0 8px}
.hero-grid{display:grid;gap:30px}
@media (min-width:900px){
  .hero-grid{grid-template-columns:1.22fr .78fr;align-items:center;gap:52px}
}
.hero-title{
  font-family:var(--serif);
  font-size:clamp(1.875rem,3.6vw,3rem);
  line-height:1.16;font-weight:800;letter-spacing:-.01em;
  margin-top:14px;
}
.hero-lead{
  margin-top:16px;font-size:16px;color:var(--ink);max-width:34em;
}
.hero-note{margin-top:12px;font-size:15px;color:var(--muted);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:26px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span+span::before{content:"";width:1px;height:12px;background:var(--line);margin-right:6px}
.hero-figure{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--paper-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .35s ease}
.hero-figure:hover img{transform:scale(1.02)}
.hero-tag{
  position:absolute;left:14px;bottom:14px;
  padding:6px 10px;border-radius:2px;
  background:rgba(22,23,27,.82);color:#F5F2EA;
  font-size:12px;letter-spacing:.08em;
}

/* ---------- Sections ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
.section-tint{background:var(--paper-2)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{
  font-family:var(--serif);font-size:clamp(1.5rem,2.4vw,2rem);
  line-height:1.25;font-weight:800;letter-spacing:-.01em;
}
.section-sub{margin-top:10px;font-size:15px;color:var(--muted);max-width:44em}
.h2-bar{position:relative;padding-left:14px}
.h2-bar::before{content:"";position:absolute;left:0;top:.18em;width:3px;height:.95em;background:var(--accent)}

/* ---------- Step list ---------- */
.step-list{display:grid;gap:0;border-top:1px solid var(--line)}
.step-item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
@media (min-width:768px){
  .step-item{grid-template-columns:88px 1fr auto;align-items:center;gap:28px;padding:28px 0}
}
.step-num{
  font-family:var(--mono);font-size:34px;font-weight:600;line-height:1;
  color:var(--accent);opacity:.9;
}
@media (min-width:768px){.step-num{font-size:46px}}
.step-title{font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:.01em}
@media (min-width:768px){.step-title{font-size:20px}}
.step-desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.8;max-width:46em}
.step-link{display:none}
@media (min-width:768px){.step-link{display:inline-flex}}
.step-item:hover .step-title{color:var(--accent)}

/* ---------- Split rows ---------- */
.split-list{display:grid}
.split-row{
  display:grid;gap:22px;align-items:center;
  padding:30px 0;border-bottom:1px solid var(--line);
}
@media (min-width:880px){
  .split-row{grid-template-columns:1fr 1fr;gap:52px;padding:44px 0}
  .split-row.reverse .split-media{order:2}
  .split-row.reverse .split-body{order:1}
}
.split-media{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--paper-2);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.split-row:hover .split-media img{transform:scale(1.02)}
.split-index{
  font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--accent);font-weight:600;
}
.split-title{
  font-family:var(--serif);font-size:clamp(1.25rem,2vw,1.55rem);
  font-weight:700;line-height:1.35;margin-top:8px;
}
.split-desc{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.85;max-width:40em}
.point-list{margin-top:16px;display:grid;gap:8px}
.point-list li{
  display:flex;gap:10px;font-size:14px;color:var(--ink);line-height:1.7;
}
.point-list li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:.6em;
  background:var(--accent);border-radius:1px;
}
.split-link{margin-top:20px}

/* ---------- Table ---------- */
.table-card{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--paper);overflow:hidden;
}
.table-scroll{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
.data-table caption{
  caption-side:top;text-align:left;padding:18px 20px;
  font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);
}
.data-table th{
  text-align:left;padding:12px 20px;
  font-size:12px;letter-spacing:.1em;color:var(--muted);font-weight:600;
  border-bottom:2px solid var(--ink);white-space:nowrap;
}
.data-table td{padding:16px 20px;border-bottom:1px solid var(--line);vertical-align:top}
.data-table tr:last-child td{border-bottom:0}
.data-table tbody tr{transition:background .18s ease}
.data-table tbody tr:hover{background:var(--paper-2)}
.data-table .cell-key{font-weight:600}
.data-table .cell-mono{font-family:var(--mono);font-size:14px;color:var(--ink)}
.table-foot{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  padding:14px 20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);background:var(--paper-2);
}

/* ---------- Recommend grid ---------- */
.reco-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.reco-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.reco-grid{grid-template-columns:repeat(4,1fr)}}
.reco-card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--paper);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.reco-card:hover{
  border-color:rgba(22,23,27,.3);
  box-shadow:var(--shadow);
  transform:translateY(-2px);
}
.reco-card .reco-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.reco-card .reco-name{font-family:var(--serif);font-size:17px;font-weight:700}
.reco-card .reco-desc{font-size:13px;color:var(--muted);line-height:1.75}
.reco-card:hover .reco-name{color:var(--accent)}
.reco-go{font-size:13px;color:var(--accent);font-weight:600}

/* ---------- FAQ ---------- */
.faq-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:16px 0 22px;border-bottom:1px solid var(--line);
}
.faq-search{
  flex:1 1 240px;display:flex;align-items:center;gap:10px;
  min-height:46px;padding:0 14px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .18s ease;
}
.faq-search:focus-within{border-color:var(--accent)}
.faq-search label{font-size:13px;color:var(--muted);flex:none}
.faq-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;font-family:inherit;color:var(--ink);
}
.faq-list{margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:18px 0;background:none;border:0;
  text-align:left;font-size:16px;font-weight:600;font-family:var(--serif);
  color:var(--ink);cursor:pointer;transition:color .18s ease;
}
@media (min-width:768px){.faq-q{font-size:17px}}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex:none;position:relative;width:20px;height:20px;
  border:1.5px solid currentColor;border-radius:2px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;
  transform:translate(-50%,-50%);transition:opacity .2s ease,transform .2s ease;
}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) scaleY(0)}
.faq-item.is-open .faq-q{color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{
  margin-bottom:18px;padding:16px 18px;
  background:var(--paper-2);border-radius:var(--radius);
  font-size:15px;line-height:1.85;color:var(--muted);
}
.faq-empty{
  margin-top:20px;padding:26px;border:1px dashed var(--line);border-radius:var(--radius);
  font-size:14px;color:var(--muted);text-align:center;
}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:52px 0}
@media (min-width:768px){.cta-band{padding:66px 0}}
.cta-inner{display:flex;flex-direction:column;gap:26px}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px}}
.cta-title{
  font-family:var(--serif);font-size:clamp(1.5rem,2.8vw,2.1rem);
  font-weight:800;line-height:1.3;letter-spacing:-.01em;
}
.cta-desc{margin-top:10px;font-size:15px;color:rgba(245,242,234,.72);max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:519px){.cta-actions .btn{width:100%}}
.cta-band .btn-ghost{border-color:rgba(245,242,234,.4);color:var(--paper)}
.cta-band .btn-ghost:hover{background:var(--paper);border-color:var(--paper);color:var(--ink)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:52px 0 0}
.footer-grid{display:grid;gap:30px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand-main{font-family:var(--serif);font-size:20px;font-weight:800;letter-spacing:.06em}
.footer-brand-sub{font-size:11px;letter-spacing:.28em;color:rgba(245,242,234,.55);margin-top:6px}
.footer-desc{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(245,242,234,.62);max-width:24em}
.footer-col-title{
  font-size:12px;letter-spacing:.18em;color:rgba(245,242,234,.5);
  margin-bottom:14px;text-transform:uppercase;
}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{
  font-size:14px;line-height:2.2;color:rgba(245,242,234,.86);
  transition:color .18s ease;
}
.footer-links a:hover{color:var(--accent)}
.footer-col+.footer-col{border-top:1px solid rgba(245,242,234,.12);padding-top:24px}
@media (min-width:640px){.footer-col+.footer-col{border-top:0;padding-top:0}}
@media (max-width:639px){.footer-grid>div+div{border-top:1px solid rgba(245,242,234,.12);padding-top:24px}}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:40px;padding:20px 0 26px;border-top:1px solid rgba(245,242,234,.14);
  font-size:13px;color:rgba(245,242,234,.55);
}
.footer-bottom a{transition:color .18s ease}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.7,.28,1),transform .5s cubic-bezier(.22,.7,.28,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto}
  .hero-figure:hover img,.split-row:hover .split-media img{transform:none}
}

/* roulang page: category5 */
:root{
    --ink:#16171B;
    --ink-soft:#3A3C42;
    --paper:#F5F2EA;
    --paper-2:#EAE5D9;
    --accent:#E4572E;
    --accent-deep:#C4431F;
    --pine:#26433F;
    --muted:#6B6C70;
    --line:#D8D1C2;
    --ok:#3F6B4E;
    --warn:#8A6A22;
    --radius:4px;
    --shadow-hover:0 14px 36px -12px rgba(22,23,27,.18);
    --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  [hidden]{display:none !important}
  .site-body{
    margin:0;
    font-family:var(--sans);
    font-size:16px;
    line-height:1.8;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.wrap{padding:0 32px}}
  .site-body a{color:inherit;text-decoration:none}
  .site-body img{display:block;max-width:100%}
  .site-body button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
  .site-body h1,.site-body h2,.site-body h3,.site-body h4,.site-body p,.site-body ul,.site-body ol,.site-body dl,.site-body dd,.site-body dt,.site-body figure{margin:0;padding:0}
  .site-body ul,.site-body ol{list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(245,242,234,.96);
    border-bottom:1px solid transparent;
    transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .site-header.is-scrolled{
    background:rgba(245,242,234,.92);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom-color:var(--line);
    box-shadow:0 10px 26px -22px rgba(22,23,27,.7);
  }
  .nav-desktop{display:none}
  @media (min-width:1024px){
    .nav-desktop{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:84px}
  }
  .nav-left,.nav-right{display:flex;align-items:center;gap:26px;flex:1 1 0}
  .nav-right{justify-content:flex-end}
  .nav-link{
    position:relative;font-size:14px;color:#43454C;padding:8px 0;
    transition:color .2s ease;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left center;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--accent)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--ink);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .brand{display:inline-flex;flex-direction:column;align-items:center;line-height:1.1;flex:0 0 auto}
  .brand-main{font-family:var(--serif);font-size:22px;font-weight:800;letter-spacing:.03em;color:var(--ink)}
  .brand-sub{font-size:11px;letter-spacing:.34em;color:var(--muted);margin-top:3px;text-indent:.34em}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:11px 22px;border-radius:var(--radius);
    border:1.5px solid transparent;font-size:14px;font-weight:600;line-height:1.2;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--accent);color:#FFF8F3}
  .btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(196,67,31,.9)}
  .btn-primary:active{transform:translateY(0);background:var(--accent-deep)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper);transform:translateY(-1px)}
  .btn-sm{min-height:38px;padding:8px 16px;font-size:13px}
  .btn-light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
  .btn-light:hover{background:#FFFFFF;transform:translateY(-1px)}
  .btn-block{width:100%}

  .nav-mobile{display:flex;align-items:center;justify-content:space-between;min-height:66px;gap:12px}
  @media (min-width:1024px){.nav-mobile{display:none}}
  .menu-toggle{
    display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;
    border:1.5px solid var(--line);border-radius:var(--radius);font-size:13px;color:var(--ink-soft);
    transition:border-color .2s ease,color .2s ease;
  }
  .menu-toggle:hover{border-color:var(--ink);color:var(--ink)}
  .menu-bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
  .menu-bars i{display:block;height:1.5px;background:currentColor;border-radius:1px}

  .drawer{
    position:fixed;inset:0;z-index:80;background:var(--paper);
    display:flex;flex-direction:column;padding:18px 20px 26px;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  .drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
  @media (min-width:1024px){.drawer{display:none}}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
  .drawer-close{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    font-size:26px;line-height:1;color:var(--muted);border:1.5px solid var(--line);border-radius:var(--radius);
  }
  .drawer-close:hover{color:var(--accent);border-color:var(--accent)}
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px}
  .drawer-nav a{
    display:flex;align-items:center;min-height:52px;font-size:16px;color:var(--ink-soft);
    border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
  }
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);padding-left:6px}
  .drawer-cta{margin-top:auto;padding-top:22px}
  .drawer-cta .btn{width:100%}

  /* ---------- page hero ---------- */
  .crumb{padding:20px 0 0;font-size:13px;color:var(--muted)}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .crumb a{transition:color .2s ease}
  .crumb a:hover{color:var(--accent)}
  .crumb .sep{color:var(--line)}
  .crumb .now{color:var(--ink-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}

  .page-hero{padding:34px 0 0}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:start}
  @media (min-width:900px){.hero-grid{grid-template-columns:1.25fr .75fr;gap:48px}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
    text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:22px;height:1.5px;background:var(--accent);display:inline-block}
  .page-title{
    font-family:var(--serif);font-weight:800;letter-spacing:-.01em;color:var(--ink);
    font-size:clamp(1.875rem,3.6vw,3rem);line-height:1.18;
  }
  .page-title .accent-dot{color:var(--accent)}
  .page-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--muted);max-width:36em}
  .hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--muted)}
  .hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
  .tag{
    display:inline-flex;align-items:center;gap:6px;border-radius:2px;
    background:var(--pine);color:#F0EDE4;font-size:12px;line-height:1;padding:6px 10px;letter-spacing:.04em;
  }
  .tag-line{background:transparent;border:1px solid var(--line);color:var(--muted)}
  .hero-figure{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-2)}
  .hero-figure img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .26s ease}
  .hero-figure:hover img{transform:scale(1.02)}
  .hero-figure figcaption{
    position:absolute;left:0;bottom:0;right:0;padding:10px 14px;font-size:12px;color:#F0EDE4;
    background:linear-gradient(to top,rgba(22,23,27,.82),rgba(22,23,27,0));
  }

  /* ---------- search bar ---------- */
  .search-panel{
    margin-top:30px;border:1px solid var(--line);border-radius:var(--radius);
    background:#FBF9F4;padding:20px;
  }
  @media (min-width:768px){.search-panel{padding:24px}}
  .field-label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.02em}
  .search-row{display:flex;flex-direction:column;gap:10px}
  @media (min-width:640px){.search-row{flex-direction:row;align-items:stretch}}
  .input{
    flex:1 1 auto;width:100%;min-height:44px;padding:10px 14px;font-size:15px;color:var(--ink);
    background:#FFFDF8;border:1px solid var(--line);border-radius:var(--radius);
    transition:border-color .2s ease,background .2s ease;
  }
  .input::placeholder{color:#9C9A94}
  .input:focus{outline:none;border-color:var(--accent);background:#FFFFFF}
  .input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .chip{
    display:inline-flex;align-items:center;min-height:38px;padding:8px 14px;font-size:13px;
    border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-soft);background:transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .chip:hover{border-color:var(--ink);color:var(--ink)}
  .chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
  .search-hint{margin-top:12px;font-size:13px;color:var(--muted)}
  .search-hint strong{color:var(--accent);font-weight:600}

  /* ---------- section shell ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:76px 0}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
  .section-kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
  .section-title{font-family:var(--serif);font-weight:700;font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.25;color:var(--ink)}
  .section-sub{margin-top:10px;font-size:14px;color:var(--muted);max-width:40em}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-soft);
    border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .2s ease,border-color .2s ease;
  }
  .text-link:hover{color:var(--accent);border-color:var(--accent)}

  /* ---------- quick facts ---------- */
  .facts{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
  @media (min-width:640px){.facts{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.facts{grid-template-columns:repeat(4,1fr)}}
  .fact{background:var(--paper);padding:22px 20px;transition:background .22s ease}
  .fact:hover{background:#FBF9F4}
  .fact-num{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em}
  .fact-title{margin-top:10px;font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink)}
  .fact-text{margin-top:8px;font-size:14px;line-height:1.85;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq-group{margin-bottom:34px}
  .faq-group:last-child{margin-bottom:0}
  .group-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .group-head h3{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink)}
  .group-head .group-line{flex:1 1 auto;height:1px;background:var(--line)}
  .group-head .group-count{font-family:var(--mono);font-size:12px;color:var(--muted)}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    display:flex;align-items:flex-start;justify-content:space-between;gap:16px;width:100%;
    padding:20px 0;text-align:left;font-family:var(--serif);font-size:17px;font-weight:700;
    line-height:1.55;color:var(--ink);transition:color .2s ease;
  }
  .faq-q:hover{color:var(--accent)}
  .faq-icon{
    position:relative;flex:0 0 auto;width:20px;height:20px;margin-top:3px;
    border:1.5px solid var(--line);border-radius:2px;transition:border-color .2s ease,background .2s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--ink-soft);
    transform:translate(-50%,-50%);transition:background .2s ease,transform .24s ease,opacity .24s ease;
  }
  .faq-icon::before{width:9px;height:1.5px}
  .faq-icon::after{width:1.5px;height:9px}
  .faq-item.is-open .faq-q{color:var(--accent)}
  .faq-item.is-open .faq-icon{border-color:var(--accent);background:var(--accent)}
  .faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#FFF8F3}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s ease}
  .faq-item.is-open .faq-a{grid-template-rows:1fr}
  .faq-a-inner{overflow:hidden}
  .faq-a-body{
    margin:0 0 20px;padding:16px 18px;background:var(--paper-2);border-radius:var(--radius);
    font-size:15px;line-height:1.85;color:var(--ink-soft);
  }
  .faq-a-body a{color:var(--accent);border-bottom:1px solid var(--accent);padding-bottom:1px}
  .faq-a-body a:hover{font-weight:600}
  .faq-empty{
    border:1px dashed var(--line);border-radius:var(--radius);padding:32px 22px;text-align:center;
    background:#FBF9F4;
  }
  .faq-empty p{margin-top:8px;font-size:14px;color:var(--muted)}
  .faq-empty .btn{margin-top:16px}

  /* ---------- steps ---------- */
  .steps{display:grid;grid-template-columns:1fr;gap:22px}
  @media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr);gap:26px}}
  .step{
    position:relative;border:1px solid var(--line);border-radius:var(--radius);background:#FBF9F4;
    padding:24px 22px;transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  }
  .step:hover{border-color:rgba(22,23,27,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
  .step-num{font-family:var(--mono);font-size:34px;font-weight:600;line-height:1;color:rgba(22,23,27,.16)}
  .step-title{margin-top:12px;font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink)}
  .step-text{margin-top:8px;font-size:14px;line-height:1.85;color:var(--muted)}

  /* ---------- update note ---------- */
  .note-band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .note-grid{display:grid;grid-template-columns:1fr;gap:26px}
  @media (min-width:900px){.note-grid{grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}}
  .note-list{display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
  .note-item{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;background:var(--paper);padding:16px 18px}
  .note-item .idx{font-family:var(--mono);font-size:13px;color:var(--accent);font-weight:600;padding-top:2px}
  .note-item h4{font-size:15px;font-weight:700;color:var(--ink)}
  .note-item p{margin-top:4px;font-size:14px;line-height:1.8;color:var(--muted)}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--ink);color:var(--paper)}
  .cta-inner{display:grid;grid-template-columns:1fr;gap:26px;padding:52px 0}
  @media (min-width:900px){.cta-inner{grid-template-columns:1.2fr .8fr;align-items:center;gap:40px;padding:64px 0}}
  .cta-title{font-family:var(--serif);font-size:clamp(1.6rem,2.8vw,2.25rem);font-weight:800;line-height:1.25;color:#F7F4EC}
  .cta-text{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(245,242,234,.72);max-width:34em}
  .cta-actions{display:flex;flex-direction:column;gap:12px}
  @media (min-width:640px){.cta-actions{flex-direction:row;flex-wrap:wrap}}
  @media (min-width:900px){.cta-actions{justify-content:flex-end}}
  .cta-mail{font-family:var(--mono);font-size:14px;color:rgba(245,242,234,.6);margin-top:14px;letter-spacing:.02em}

  /* ---------- cross links ---------- */
  .cross-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
  @media (min-width:768px){.cross-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.cross-grid{grid-template-columns:repeat(4,1fr)}}
  .cross-item{
    display:flex;flex-direction:column;gap:8px;background:var(--paper);padding:24px 20px;
    transition:background .22s ease,color .22s ease;
  }
  .cross-item:hover{background:#FBF9F4}
  .cross-num{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.08em}
  .cross-title{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);transition:color .2s ease}
  .cross-item:hover .cross-title{color:var(--accent)}
  .cross-text{font-size:13px;line-height:1.8;color:var(--muted)}
  .cross-arrow{margin-top:auto;font-size:14px;color:var(--accent);transition:transform .2s ease}
  .cross-item:hover .cross-arrow{transform:translateX(4px)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:var(--paper);padding:56px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:30px;padding-bottom:38px}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-brand-main{font-family:var(--serif);font-size:22px;font-weight:800;color:#F7F4EC;letter-spacing:.03em}
  .footer-brand-sub{font-size:11px;letter-spacing:.34em;color:rgba(245,242,234,.5);margin-top:4px;text-indent:.34em}
  .footer-desc{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(245,242,234,.62);max-width:24em}
  .footer-col-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:rgba(245,242,234,.46);margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:2px}
  .footer-links a{
    display:inline-flex;align-items:center;min-height:32px;font-size:14px;color:rgba(245,242,234,.82);
    transition:color .2s ease,padding-left .2s ease;
  }
  .footer-links a:hover{color:var(--accent);padding-left:4px}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    padding:20px 0 26px;border-top:1px solid rgba(245,242,234,.14);font-size:13px;color:rgba(245,242,234,.55);
  }
  .footer-bottom a{transition:color .2s ease}
  .footer-bottom a:hover{color:var(--accent)}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.7,.28,1),transform .5s cubic-bezier(.22,.7,.28,1)}
  .reveal.is-in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto}
  }