/* roulang page: index */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --jade-soft:rgba(30,91,76,.08);
  --copper:#B4794A;
  --copper-soft:rgba(180,121,74,.14);
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --r-sm:2px;
  --r-md:4px;
  --r-pill:999px;
  --shadow-1:0 1px 0 var(--line);
  --shadow-2:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.18;letter-spacing:.01em;margin:0}
p{margin:0}
img{max-width:100%;display:block}
a{color:var(--jade);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--copper)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink)}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--sand);padding:10px 18px;z-index:200}
.skip:focus{left:12px;top:12px}
.tabular{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(245,241,234,.94);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,241,234,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  box-shadow:0 10px 30px -24px rgba(20,16,14,.5);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;border:1.5px solid var(--copper);border-radius:var(--r-sm);
  position:relative;
}
.brand-mark::before{content:"";position:absolute;inset:6px;border:1.5px solid var(--jade);border-radius:1px}
.brand-mark::after{content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;background:var(--copper);transform:translate(-50%,-50%) rotate(45deg)}
.brand-lockup{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--serif);font-size:20px;font-weight:600;letter-spacing:.04em;color:var(--ink)}
.brand-name em{font-style:normal;font-size:12px;letter-spacing:.2em;color:var(--copper);margin-left:6px;vertical-align:2px}
.brand-sub{font-size:10px;letter-spacing:.24em;color:var(--muted);margin-top:5px}
.nav-desktop{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:14px;letter-spacing:.06em;color:var(--ink-2);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--copper);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--copper)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%;height:2px}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--paper);
}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);transition:transform .28s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:120;
  background:var(--sand);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:84px 26px 26px;overflow-y:auto;
  box-shadow:-24px 0 60px -40px rgba(20,16,14,.6);
}
.drawer.is-open{transform:translateX(0)}
.drawer-scrim{
  position:fixed;inset:0;background:rgba(20,16,14,.42);z-index:110;opacity:0;pointer-events:none;
  transition:opacity .28s var(--ease);
}
.drawer-scrim.is-open{opacity:1;pointer-events:auto}
.drawer-link{
  display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:18px;color:var(--ink-2);
}
.drawer-link .num{font-size:12px;letter-spacing:.16em;color:var(--copper);font-family:var(--sans)}
.drawer-link.is-active{color:var(--jade)}
.drawer-cta{margin-top:24px;width:100%;justify-content:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;letter-spacing:.04em;white-space:nowrap;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn .arw{transition:transform .24s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--jade);color:var(--sand)}
.btn-primary:hover{background:var(--jade-deep);color:var(--sand);transform:translateY(-2px)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px)}
.btn-copper{background:var(--copper);color:var(--ink)}
.btn-copper:hover{background:#c98a58;color:var(--ink);transform:translateY(-2px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:auto;padding:0 0 4px;
  color:var(--ink);font-size:15px;border-bottom:1px solid var(--line);
}
.btn-ghost:hover{color:var(--copper);border-bottom-color:var(--copper)}
.btn-outline-light{background:transparent;color:var(--sand);border:1px solid rgba(245,241,234,.55)}
.btn-outline-light:hover{background:rgba(245,241,234,.1);color:var(--sand);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important}

/* ---------- Shared bits ---------- */
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;color:var(--copper);
  text-transform:uppercase;margin-bottom:18px;
}
.section{padding:96px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,2.8vw,38px);color:var(--ink)}
.section-head .lead{color:var(--muted);font-size:15px;margin-top:12px;max-width:640px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.pill{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--copper);color:var(--copper);font-size:12px;letter-spacing:.1em;background:transparent;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.pill:hover{background:var(--copper-soft)}
.pill.is-active{background:var(--ink);border-color:var(--ink);color:var(--sand)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  border:1px solid var(--copper);color:var(--copper);font-size:12px;letter-spacing:.06em;
}
.tag-dark{background:var(--ink);border-color:var(--ink);color:var(--sand)}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:2px;
  background:var(--ink);color:var(--sand);font-size:11px;letter-spacing:.08em;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:80px 0 88px;background:var(--sand)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(20,16,14,.04) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(20,16,14,.04) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero::after{
  content:"尊";position:absolute;right:-40px;top:-70px;
  font-family:var(--serif);font-size:300px;line-height:1;color:var(--ink);opacity:.06;
  pointer-events:none;user-select:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(32px,4.6vw,56px);color:var(--ink);max-width:14ch}
.hero-sub{margin-top:24px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.trust-item svg{flex:0 0 20px;color:var(--jade)}
.hero-figure{position:relative}
.hero-img-wrap{
  position:relative;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
  aspect-ratio:4/5;background:var(--paper);
}
.hero-img-wrap::before{
  content:"";position:absolute;left:0;top:24px;width:48px;height:1px;background:var(--copper);z-index:2;
}
.hero-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.hero-img-wrap:hover img{transform:scale(1.03)}
.float-card{
  position:absolute;right:-18px;bottom:-24px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--shadow-2);min-width:200px;
}
.float-card .fc-label{font-size:12px;letter-spacing:.16em;color:var(--copper)}
.float-card .fc-num{font-family:var(--serif);font-size:30px;line-height:1.1;margin:8px 0 4px;font-variant-numeric:tabular-nums}
.float-card .fc-note{font-size:12px;color:var(--muted)}

/* ---------- Feature mosaic ---------- */
.mosaic{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{border-color:var(--jade);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{font-size:19px;color:var(--ink)}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .thumb img{transform:scale(1.03)}
.card-lg{grid-column:span 2}
.card-lg .thumb{aspect-ratio:16/9}
.card-sm{grid-column:span 2;flex-direction:row;align-items:stretch}
.card-sm .thumb{width:132px;flex:0 0 132px;aspect-ratio:1/1}
.card-sm .card-body{padding:20px}
.card-sm h3{font-size:17px}
.card-sm p{display:none}

/* ---------- Guarantee strip ---------- */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:36px 26px;display:flex;flex-direction:column;gap:8px;border-left:1px solid var(--line)}
.strip-item:first-child{border-left:0}
.strip-item svg{color:var(--jade)}
.strip-item h4{font-size:15px;font-family:var(--sans);font-weight:600;letter-spacing:.02em}
.strip-item p{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- Process ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.zig + .zig{border-top:1px solid var(--line)}
.zig:nth-child(even) .zig-media{order:2}
.zig-media{position:relative;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;aspect-ratio:4/3}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.zig-media:hover img{transform:scale(1.03)}
.zig-num{font-family:var(--serif);font-size:48px;color:var(--copper);line-height:1;opacity:.85;font-variant-numeric:tabular-nums}
.zig h3{font-size:24px;margin:14px 0 14px}
.zig p{font-size:15px;color:var(--ink-2);line-height:1.85}
.zig ul{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.zig li{position:relative;padding-left:20px;font-size:14px;color:var(--muted)}
.zig li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--copper);border-radius:1px}

/* ---------- News / CMS ---------- */
.news-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start}
.news-main{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;color:inherit;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.news-main:hover{border-color:var(--jade);box-shadow:var(--shadow-2);transform:translateY(-2px);color:inherit}
.news-main .thumb{aspect-ratio:16/9}
.news-main .nb{padding:26px;display:flex;flex-direction:column;gap:12px}
.news-main h3{font-size:22px;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-main p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.news-meta .d{color:var(--copper);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.news-side{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.news-item{
  display:flex;flex-direction:column;gap:8px;padding:20px 4px;border-bottom:1px solid var(--line);
  color:inherit;transition:padding-left .24s var(--ease),color .24s var(--ease);
}
.news-item:hover{padding-left:10px;color:inherit}
.news-item h3{font-size:16px;line-height:1.5;color:var(--ink);transition:color .24s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover h3{color:var(--jade)}
.news-item .news-meta{margin-top:2px}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);background:rgba(255,255,255,.55);
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  text-align:center;padding:32px;
}
.empty-state .es-main{font-family:var(--serif);font-size:20px;color:var(--ink)}
.empty-state .es-sub{font-size:14px;color:var(--muted)}

/* ---------- Voices ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:28px 26px;
  display:flex;flex-direction:column;gap:14px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.voice:hover{border-color:var(--jade);box-shadow:var(--shadow-2)}
.voice .quote{font-family:var(--serif);font-size:56px;line-height:.6;color:var(--copper);opacity:.35;height:26px}
.voice p{font-size:15px;color:var(--ink-2);line-height:1.85}
.stars{display:flex;gap:4px;color:var(--copper)}
.who{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink)}
.who span{display:block;color:var(--muted);font-size:12px;margin-top:2px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;text-align:left;font-size:16px;font-family:var(--sans);font-weight:600;color:var(--ink);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--jade)}
.faq-ico{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--copper);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-ico::before{left:0;top:8px;width:18px;height:1.5px}
.faq-ico::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.is-open .faq-ico::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 0 24px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:66ch}

/* ---------- CTA dark ---------- */
.cta-dark{background:var(--jade-deep);color:var(--sand);position:relative;overflow:hidden}
.cta-dark::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,#F5F1EA 0 1px,transparent 1px 12px);
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:76px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(24px,2.8vw,36px);color:var(--sand);max-width:22ch}
.cta-inner p{margin-top:14px;font-size:15px;color:rgba(245,241,234,.78);max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--sand);border-top:1px solid var(--copper)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding:72px 0 48px}
.footer-brand .brand-name{color:var(--sand)}
.footer-brand .brand-sub{color:rgba(245,241,234,.5)}
.footer-desc{margin-top:18px;font-size:13px;color:rgba(245,241,234,.66);line-height:1.8;max-width:30ch}
.footer-links{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:13px;color:rgba(245,241,234,.72)}
.footer-links a:hover{color:var(--copper)}
.footer-col h4{
  font-family:var(--sans);font-size:12px;letter-spacing:.18em;color:var(--copper);
  font-weight:600;margin-bottom:18px;text-transform:uppercase;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col li{font-size:13px;color:rgba(245,241,234,.72);line-height:1.7}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{
  border-top:1px solid rgba(245,241,234,.14);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12px;color:rgba(245,241,234,.6);
}
.footer-bottom a{color:rgba(245,241,234,.6)}
.footer-bottom a:hover{color:var(--copper)}

/* ---------- Reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .hero-grid{gap:40px}
  .footer-top{grid-template-columns:1.2fr 1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{max-width:none}
  .hero::after{font-size:220px;top:-40px;right:-30px}
  .hero-img-wrap{aspect-ratio:16/10}
  .float-card{right:12px;bottom:-18px}
  .mosaic{grid-template-columns:repeat(2,1fr)}
  .card-lg,.card-sm{grid-column:span 2}
  .card-sm .thumb{width:120px;flex:0 0 120px}
  .strip-grid{grid-template-columns:repeat(2,1fr)}
  .strip-item{border-left:0;border-top:1px solid var(--line);padding:28px 22px}
  .strip-item:nth-child(-n+2){border-top:0}
  .strip-item:nth-child(even){border-left:1px solid var(--line)}
  .zig{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .zig:nth-child(even) .zig-media{order:0}
  .news-layout{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .cta-inner{padding:60px 0}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 40px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .brand-name{font-size:18px}
  .hero h1{font-size:clamp(28px,7vw,38px)}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:16px 22px}
  .mosaic{grid-template-columns:1fr;gap:18px}
  .card-lg,.card-sm{grid-column:span 1}
  .card-sm{flex-direction:column}
  .card-sm .thumb{width:100%;flex:none;aspect-ratio:16/9}
  .card-sm p{display:block}
  .float-card{position:static;margin-top:16px;min-width:0;box-shadow:none}
  .section-head{align-items:flex-start;flex-direction:column;gap:16px}
  .zig h3{font-size:21px}
  .zig-num{font-size:40px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .voice{padding:24px 20px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:479px){
  body{font-size:15px}
  .section{padding:56px 0}
  .hero{padding:44px 0 56px}
  .hero::after{font-size:170px}
  .card-body{padding:20px}
  .faq-q{font-size:15px;padding:20px 0}
  .news-main .nb{padding:20px}
  .news-main h3{font-size:19px}
  .pill{height:30px;padding:0 13px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --copper:#B4794A;
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --r-btn:2px;
  --r-card:4px;
  --r-img:2px;
  --shadow-card:0 1px 0 var(--line);
  --shadow-lift:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-serif:"Source Han Serif SC","Songti SC","Noto Serif SC",Songti,serif;
  --font-sans:"Inter","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;line-height:1.25;letter-spacing:.01em;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--copper);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";display:inline-block;width:26px;height:1px;background:var(--copper);vertical-align:middle;margin-right:10px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:14px;letter-spacing:.06em;font-weight:600;
  transition:transform .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  white-space:nowrap;
}
.btn .arw{transition:transform .24s var(--ease);display:inline-block}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--jade);color:var(--sand)}
.btn-primary:hover{background:var(--jade-deep);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 20px;font-size:13px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:4px;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.btn-ghost:hover{color:var(--copper);border-color:var(--copper)}
.btn-ghost .arw{transition:transform .24s var(--ease)}
.btn-ghost:hover .arw{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(245,241,234,.86);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,241,234,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;width:28px;height:28px;flex:0 0 28px;
  border:1.5px solid var(--copper);border-radius:2px;transform:rotate(45deg);
}
.brand-mark::before{
  content:"";position:absolute;inset:6px;border:1.5px solid var(--copper);border-radius:1px;
}
.brand-mark::after{
  content:"";position:absolute;top:50%;left:50%;width:6px;height:6px;background:var(--copper);
  transform:translate(-50%,-50%);border-radius:50%;
}
.brand-lockup{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.02em}
.brand-name em{font-style:normal;font-size:12px;color:var(--copper);letter-spacing:.2em;margin-left:6px;vertical-align:2px}
.brand-sub{font-size:9px;letter-spacing:.3em;color:var(--muted);margin-top:4px}
.nav-desktop{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:14px;letter-spacing:.06em;color:var(--ink-2);
  padding:6px 0;transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--copper);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);border-radius:2px;background:var(--paper);
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .28s var(--ease),opacity .２s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* Mobile drawer */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:120;
  background:var(--sand);border-left:1px solid var(--line);
  padding:84px 28px 32px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .28s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a.drawer-link{
  display:flex;align-items:center;gap:12px;font-family:var(--font-serif);font-size:18px;
  color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line);
}
.nav-drawer a.drawer-link i{font-style:normal;font-size:12px;color:var(--copper);letter-spacing:.1em}
.nav-drawer a.drawer-link.is-active{color:var(--jade)}
.nav-drawer .btn{margin-top:22px;width:100%}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,14,.42);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ Page top ============ */
.page-top{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(245,241,234,.94),rgba(245,241,234,.98)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-top::after{
  content:"";position:absolute;right:-40px;top:-60px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(180,121,74,.22);
  box-shadow:0 0 0 40px rgba(180,121,74,.05);
  pointer-events:none;
}
.page-top-inner{position:relative;z-index:2;padding:44px 0 40px;max-width:860px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb span.sep{color:var(--line)}
.breadcrumb .current{color:var(--ink)}
.article-cat-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 14px;border-radius:999px;
  border:1px solid var(--copper);color:var(--copper);font-size:12px;letter-spacing:.08em;
  margin-bottom:18px;background:transparent;
}
.article-title{
  font-size:clamp(28px,4vw,44px);line-height:1.24;letter-spacing:.01em;
  margin-bottom:20px;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.article-meta strong{color:var(--ink);font-weight:600}

/* ============ Article layout ============ */
.article-shell{padding:64px 0 84px}
.article-grid{
  display:grid;grid-template-columns:minmax(0,760px) 240px;
  gap:64px;justify-content:center;align-items:start;
}
.article-panel{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 48px;box-shadow:var(--shadow-card);
  min-width:0;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-2);word-break:break-word}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;font-size:clamp(22px,2.3vw,28px);margin-top:44px;padding-left:16px;
  line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:var(--copper);
  border-radius:1px;
}
.article-body h3{font-size:20px;margin-top:32px;color:var(--ink)}
.article-body h4{font-size:17px;margin-top:24px;color:var(--ink)}
.article-body p{margin-top:18px}
.article-body a{color:var(--jade);border-bottom:1px solid rgba(30,91,76,.32)}
.article-body a:hover{color:var(--copper);border-color:var(--copper)}
.article-body strong{color:var(--ink)}
.article-body ul,.article-body ol{margin-top:18px;padding-left:0;list-style:none}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;background:var(--copper);border-radius:1px;
}
.article-body ol{counter-reset:artnum}
.article-body ol li{counter-increment:artnum}
.article-body ol li::before{
  content:counter(artnum,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:12px;letter-spacing:.06em;color:var(--copper);
  font-variant-numeric:tabular-nums;font-weight:600;
}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;border-left:3px solid var(--jade);
  background:rgba(30,91,76,.04);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--ink-2);font-size:16px;
}
.article-body blockquote p{margin-top:0}
.article-body img{
  width:100%;border-radius:var(--r-img);margin:28px 0 10px;
  border:1px solid var(--line);object-fit:cover;
}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin-top:24px;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:#FAF7F2;color:var(--ink);font-weight:600}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;
  background:#F3EEE6;padding:2px 6px;border-radius:2px;color:var(--ink);
}

.article-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;background:var(--paper);
}
.article-empty h2{font-size:22px;margin-bottom:10px}
.article-empty p{color:var(--muted);font-size:15px;margin-bottom:22px}

.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;color:var(--muted);border:1px solid var(--line);
  transition:color .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease);
}
.tag:hover{color:var(--jade);border-color:var(--jade);background:rgba(30,91,76,.05)}
.article-foot-actions{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:28px;
}
.share-hint{font-size:13px;color:var(--muted)}

/* TOC */
.article-aside{position:sticky;top:100px}
.toc{
  border-left:1px solid var(--line);padding-left:20px;
}
.toc-title{
  font-size:12px;letter-spacing:.18em;color:var(--copper);font-weight:600;margin-bottom:14px;
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--muted);padding:6px 0 6px 10px;
  border-left:2px solid transparent;margin-left:-21px;padding-left:19px;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.toc-list a:hover{color:var(--ink)}
.toc-list a.is-active{color:var(--copper);border-left-color:var(--copper);font-weight:600}

/* ============ Sections ============ */
.section{padding:84px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;
}
.section-head h2{font-size:clamp(24px,2.8vw,34px)}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:620px}
.section-head .btn-ghost{flex:0 0 auto}

/* Related cards */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease);
}
.card:hover{border-color:var(--jade);transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.card-media{overflow:hidden;aspect-ratio:16/9;background:#EDE7DE}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;line-height:1.45}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75}
.card-foot{
  display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);
  margin-top:auto;font-variant-numeric:tabular-nums;
}
.card-foot .arrow{color:var(--copper);margin-left:auto;transition:transform .24s var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* Dark CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--jade-deep);color:var(--sand);
  border-radius:var(--r-card);
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(245,241,234,.12);
  box-shadow:0 0 0 60px rgba(245,241,234,.04),0 0 0 120px rgba(245,241,234,.03);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:36px;padding:56px 56px;
}
.cta-inner h2{color:var(--sand);font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.cta-inner p{color:rgba(245,241,234,.74);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex:0 0 auto;flex-wrap:wrap}
.btn-copper{background:var(--copper);color:var(--ink)}
.btn-copper:hover{background:#C68B5C;transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:var(--sand);border:1px solid rgba(245,241,234,.55)}
.btn-outline-light:hover{background:rgba(245,241,234,.1);border-color:var(--sand);transform:translateY(-2px)}

/* FAQ */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-family:var(--font-serif);font-size:16.5px;color:var(--ink);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--jade)}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 14px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--copper);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{top:50%;left:0;width:14px;height:1.5px;transform:translateY(-50%)}
.faq-icon::after{left:50%;top:0;height:14px;width:1.5px;transform:translateX(-50%)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-item.is-open .faq-icon::before{transform:translateY(-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a-inner{padding:0 0 24px;font-size:15px;color:var(--muted);line-height:1.85;max-width:760px}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:rgba(245,241,234,.78);padding:64px 0 0;border-top:1px solid var(--copper)}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;
}
.footer-brand .brand-name{color:var(--sand)}
.footer-brand .brand-sub{color:rgba(245,241,234,.5)}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(245,241,234,.62);margin:18px 0 16px;max-width:300px}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-links a{font-size:13px;color:rgba(245,241,234,.78);border-bottom:1px solid rgba(245,241,234,.24);padding-bottom:2px}
.footer-links a:hover{color:var(--copper);border-color:var(--copper)}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.12em;color:var(--sand);
  font-weight:600;margin-bottom:18px;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:13.5px;color:rgba(245,241,234,.62);line-height:1.7}
.footer-col a{color:rgba(245,241,234,.78);font-size:13.5px}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(245,241,234,.12);padding:20px 0 24px;
  font-size:12px;color:rgba(245,241,234,.6);
}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .article-grid{gap:44px;grid-template-columns:minmax(0,1fr) 220px}
  .article-panel{padding:38px 36px}
}
@media (max-width:1179px){
  .article-aside{display:none}
  .article-grid{grid-template-columns:minmax(0,1fr);max-width:820px;margin:0 auto}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:68px 0}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:34px}
  .cta-inner{padding:44px 36px;flex-direction:column;align-items:flex-start}
  .article-shell{padding:48px 0 64px}
}
@media (max-width:767px){
  .header-inner{height:60px}
  .brand-name{font-size:17px}
  .page-top-inner{padding:32px 0 30px}
  .article-panel{padding:28px 22px;border-radius:var(--r-card)}
  .article-body{font-size:17px;line-height:1.85}
  .article-body h2{margin-top:34px;font-size:22px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-inner{padding:36px 24px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .article-foot-actions{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .article-title{font-size:26px}
  .article-meta{font-size:12px;gap:8px 12px}
  .article-body{font-size:16.5px}
  .btn{height:46px;padding:0 22px}
  .section{padding:52px 0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --jade-soft:rgba(30,91,76,.10);
  --copper:#B4794A;
  --copper-soft:rgba(180,121,74,.12);
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --radius-btn:2px;
  --radius-card:4px;
  --shadow-card:0 1px 0 var(--line);
  --shadow-float:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-sans:"Inter","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background-color:var(--sand);
  background-image:
    linear-gradient rgba(20,16,14,.04) 1px, transparent 1px,
    linear-gradient(90deg, rgba(20,16,14,.04) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:600;
  color:var(--ink);
  line-height:1.18;
  letter-spacing:.01em;
  margin:0;
}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--jade);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--copper);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,241,234,.86);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,241,234,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;
  border:1.5px solid var(--copper);
  border-radius:50%;
  position:relative;
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";
  position:absolute;inset:6px;
  border:1.5px solid var(--jade);
  border-radius:2px;
  transform:rotate(45deg);
}
.brand-lockup{display:flex;flex-direction:column;line-height:1;}
.brand-name{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--ink);
}
.brand-name em{
  font-style:normal;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--copper);
  margin-left:4px;
  font-weight:500;
}
.brand-sub{
  font-size:9px;
  letter-spacing:.28em;
  color:var(--muted);
  margin-top:5px;
}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-link{
  position:relative;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--copper);
  transition:width .24s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:500;}
.nav-link.is-active::after{width:100%;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-left:6px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--paper);
}
.nav-toggle span{
  display:block;
  width:18px;height:1.5px;
  background:var(--ink);
  transition:transform .28s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

/* drawer */
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:var(--paper);
  border-left:1px solid var(--line);
  box-shadow:var(--shadow-float);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  z-index:120;
  display:flex;
  flex-direction:column;
  padding:24px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:12px;
}
.drawer-title{font-family:var(--font-serif);font-size:15px;color:var(--ink);letter-spacing:.1em;}
.drawer-close{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:18px;color:var(--ink-2);
}
.drawer-close:hover{border-color:var(--jade);color:var(--jade);}
.drawer nav{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:15px 2px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-serif);
  font-size:17px;
  color:var(--ink);
  min-height:44px;
}
.drawer-link i{
  font-style:normal;
  font-family:var(--font-sans);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--copper);
  min-width:20px;
}
.drawer-link.is-active{color:var(--jade);}
.drawer-cta{margin-top:22px;}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(20,16,14,.42);
  opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
  z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  letter-spacing:.04em;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--jade);color:#F7F4EE;}
.btn-primary:hover{background:var(--jade-deep);color:#fff;transform:translateY(-2px);}
.btn-primary:hover .arw{transform:translateX(4px);}
.btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px);}
.btn-copper{background:var(--copper);color:var(--ink);}
.btn-copper:hover{background:#C68A59;color:var(--ink);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;border-color:rgba(245,241,234,.55);color:var(--sand);}
.btn-ghost-light:hover{background:rgba(245,241,234,.12);border-color:var(--sand);color:#fff;transform:translateY(-2px);}
.btn[disabled],
.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.arw{display:inline-block;transition:transform .24s var(--ease);}
.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 .24s var(--ease),border-color .24s var(--ease);
}
.link-arrow:hover{color:var(--copper);border-color:var(--copper);}
.link-arrow:hover .arw{transform:translateX(4px);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 380px at 88% -10%, rgba(180,121,74,.13), transparent 70%),
    radial-gradient(700px 320px at 4% 110%, rgba(30,91,76,.10), transparent 72%);
}
.page-hero::after{
  content:"尊";
  position:absolute;
  right:-30px;
  top:-40px;
  font-family:var(--font-serif);
  font-size:clamp(180px,20vw,300px);
  line-height:1;
  color:var(--ink);
  opacity:.05;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--muted);
  margin-bottom:18px;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--copper);}
.crumbs span.sep{color:var(--line);}
.crumbs span.current{color:var(--ink);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--copper);
  margin-bottom:14px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);
  margin-bottom:18px;
}
.hero-lead{
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:28px;
}
.hero-media{
  position:relative;
  margin:0;
}
.hero-media::before{
  content:"";
  position:absolute;
  left:-14px;
  top:-14px;
  width:64px;
  height:1px;
  background:var(--copper);
}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper);
}
.hero-float{
  position:absolute;
  right:-10px;
  bottom:-22px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-float);
  padding:16px 20px;
  min-width:186px;
}
.hero-float .hf-label{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--copper);
  display:block;
  margin-bottom:6px;
}
.hero-float .hf-num{
  font-family:var(--font-serif);
  font-size:24px;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.hero-float .hf-sub{
  font-size:12px;
  color:var(--muted);
  margin-top:4px;
}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head .head-text{max-width:640px;}
.section-head h2{font-size:clamp(24px,2.8vw,36px);margin-top:10px;}
.section-head p{
  font-size:15px;
  color:var(--muted);
  margin-top:12px;
  line-height:1.85;
}

/* feature strip */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper);
  overflow:hidden;
}
.stat-cell{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.stat-cell:last-child{border-right:0;}
.stat-cell .sc-icon{
  width:26px;height:26px;
  border:1.5px solid var(--jade);
  border-radius:50%;
  position:relative;
  margin-bottom:14px;
}
.stat-cell .sc-icon::after{
  content:"";
  position:absolute;
  inset:7px;
  background:var(--copper);
  border-radius:1px;
}
.stat-cell h3{font-size:16px;margin-bottom:6px;}
.stat-cell p{font-size:13px;color:var(--muted);line-height:1.8;}
.stat-cell .sc-num{
  font-family:var(--font-serif);
  font-size:22px;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}

/* zigzag */
.zigzag{display:flex;flex-direction:column;gap:72px;}
.zig-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.zig-row.is-flip .zig-media{order:2;}
.zig-copy .zig-index{
  font-family:var(--font-serif);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--copper);
  display:block;
  margin-bottom:12px;
}
.zig-copy h3{font-size:clamp(21px,2.2vw,28px);margin-bottom:14px;}
.zig-copy p{font-size:15px;color:var(--ink-2);line-height:1.9;}
.zig-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.zig-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--ink-2);
  line-height:1.8;
}
.zig-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:7px;
  border:1.5px solid var(--copper);
  border-radius:1px;
}
.zig-media{
  margin:0;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper);
}
.zig-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.zig-media:hover img{transform:scale(1.03);}
.zig-media figcaption{
  font-size:12px;
  color:var(--muted);
  padding:10px 14px;
  border-top:1px solid var(--line);
}

/* table */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper);
}
table.compare{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:14px;
}
table.compare caption{
  text-align:left;
  padding:18px 20px 6px;
  font-family:var(--font-serif);
  font-size:15px;
  color:var(--ink);
  letter-spacing:.04em;
}
table.compare thead th{
  background:#EFEAE1;
  color:var(--ink);
  font-weight:600;
  text-align:left;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  font-size:13px;
  letter-spacing:.06em;
  white-space:nowrap;
}
table.compare tbody td{
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  vertical-align:top;
  line-height:1.75;
}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr:hover td{background:rgba(30,91,76,.05);}
table.compare td:first-child{color:var(--ink);font-weight:500;white-space:nowrap;}
table.compare td .num{font-variant-numeric:tabular-nums;color:var(--jade);}

/* scenario cards */
.scene-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:24px;
}
.scene-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.scene-card:hover{
  border-color:var(--jade);
  box-shadow:var(--shadow-float);
  transform:translateY(-2px);
}
.scene-card.is-wide{grid-row:span 2;display:flex;flex-direction:column;}
.scene-card .badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border:1px solid var(--copper);
  color:var(--copper);
  border-radius:999px;
  font-size:11px;
  letter-spacing:.14em;
  margin-bottom:16px;
  background:transparent;
}
.scene-card .badge.is-solid{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--sand);
}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.85;}
.scene-card.is-wide p{color:var(--ink-2);}
.scene-card .scene-foot{
  margin-top:auto;
  padding-top:20px;
  font-size:13px;
  color:var(--muted);
  border-top:1px solid var(--line);
}

/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 2px;
  text-align:left;
  font-family:var(--font-serif);
  font-size:16px;
  color:var(--ink);
  min-height:44px;
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--jade);}
.faq-sign{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--copper);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-sign::before{left:0;top:10px;width:22px;height:1.5px;}
.faq-sign::after{left:10px;top:0;width:1.5px;height:22px;}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  padding:0 2px 24px;
  max-width:840px;
}

/* CTA dark */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--jade-deep);
  color:var(--sand);
  border-radius:var(--radius-card);
  padding:56px 48px;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg, rgba(245,241,234,.06) 0 1px, transparent 1px 14px);
  pointer-events:none;
}
.cta-band-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-band h2{
  color:var(--sand);
  font-size:clamp(22px,2.6vw,32px);
  margin-bottom:12px;
}
.cta-band p{
  font-size:14.5px;
  color:rgba(245,241,234,.72);
  max-width:520px;
  line-height:1.85;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{
  margin-top:18px;
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(245,241,234,.55);
}

/* footer */
.site-footer{
  background:var(--ink);
  color:rgba(245,241,234,.78);
  border-top:1px solid var(--copper);
  padding:64px 0 0;
  margin-top:0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand-name{color:var(--sand);}
.footer-brand .brand-sub{color:rgba(245,241,234,.5);}
.footer-desc{
  font-size:13px;
  line-height:1.9;
  color:rgba(245,241,234,.62);
  margin-top:16px;
  max-width:300px;
}
.footer-links{
  display:flex;
  gap:18px;
  margin-top:16px;
}
.footer-links a{
  font-size:13px;
  color:rgba(245,241,234,.78);
  border-bottom:1px solid rgba(180,121,74,.5);
  padding-bottom:2px;
}
.footer-links a:hover{color:var(--copper);border-color:var(--copper);}
.footer-col h4{
  font-family:var(--font-sans);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--copper);
  margin-bottom:16px;
  font-weight:500;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{
  font-size:13px;
  color:rgba(245,241,234,.66);
  line-height:1.8;
  word-break:break-word;
}
.footer-col a{color:rgba(245,241,234,.78);}
.footer-col a:hover{color:var(--copper);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid rgba(245,241,234,.12);
  padding:20px 0 26px;
  font-size:12px;
  color:rgba(245,241,234,.6);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* responsive */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-desktop{display:none;}
  .nav-toggle{display:flex;}
  .page-hero{padding:44px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:-1;}
  .hero-float{position:static;margin-top:16px;box-shadow:none;}
  .section{padding:72px 0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),
  .stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .zig-row{grid-template-columns:1fr;gap:28px;}
  .zig-row.is-flip .zig-media{order:0;}
  .scene-grid{grid-template-columns:1fr;}
  .scene-card.is-wide{grid-row:auto;}
  .cta-band{padding:40px 28px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .section-head p{font-size:14px;}
  .hero-actions{gap:12px;}
  .btn{height:44px;padding:0 22px;font-size:14px;}
  .btn-sm{height:38px;padding:0 18px;}
  .stat-cell{padding:20px 18px;}
  .zigzag{gap:52px;}
  .faq-q{font-size:15px;padding:18px 2px;}
  .cta-band{padding:32px 22px;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  .container{padding:0 18px;}
  body{font-size:15px;}
  .page-hero h1{font-size:27px;}
  .hero-lead{font-size:14.5px;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:8px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:0;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .scene-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --copper:#B4794A;
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --r-sm:2px;
  --r-md:4px;
  --r-pill:999px;
  --shadow-1:0 1px 0 var(--line);
  --shadow-2:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-serif:"Songti SC","SimSun","Source Han Serif SC","Noto Serif SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.18;letter-spacing:.01em;margin:0}
h1{font-size:clamp(30px,4.2vw,52px)}
h2{font-size:clamp(23px,2.8vw,36px)}
h3{font-size:19px}
h4{font-size:16px}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
::selection{background:rgba(180,121,74,.24)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{margin:14px 0 14px}
.section-head p{font-size:15px;color:var(--muted);line-height:1.85;margin:0}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--copper)}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(245,241,234,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px -24px rgba(20,16,14,.5);background:rgba(245,241,234,.97)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border:1.5px solid var(--copper);border-radius:var(--r-sm);
  position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::before{
  content:"";position:absolute;inset:6px;border:1.5px solid var(--jade);
  border-radius:1px;transform:rotate(45deg);
}
.brand-lockup{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--font-serif);font-size:20px;font-weight:600;letter-spacing:.02em;color:var(--ink);white-space:nowrap}
.brand-name em{font-style:normal;font-size:12px;letter-spacing:.2em;color:var(--copper);margin-left:6px;vertical-align:middle}
.brand-sub{font-size:9px;letter-spacing:.28em;color:var(--muted);margin-top:4px;text-transform:uppercase}
.nav-desktop{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;padding:6px 0;font-size:14px;letter-spacing:.06em;
  color:var(--ink-2);transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper);transition:width .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{width:100%}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--paper);
  border-radius:var(--r-sm);flex-direction:column;justify-content:center;align-items:center;
  gap:5px;cursor:pointer;transition:border-color .24s var(--ease),background .24s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle:hover{border-color:var(--jade)}

/* ---------- drawer ---------- */
.drawer-backdrop{
  position:fixed;inset:0;z-index:95;background:rgba(20,16,14,.42);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:96;
  width:min(86vw,340px);background:var(--sand);border-left:1px solid var(--line);
  padding:24px 26px 32px;overflow-y:auto;display:flex;flex-direction:column;
  transform:translateX(101%);transition:transform .28s var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:var(--paper);
  border-radius:var(--r-sm);font-size:20px;line-height:1;cursor:pointer;color:var(--ink);
}
.drawer-close:hover{border-color:var(--jade)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);
  font-family:var(--font-serif);font-size:18px;color:var(--ink-2);
}
.drawer-nav a i{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--copper);font-variant-numeric:tabular-nums}
.drawer-nav a.is-active,.drawer-nav a:hover{color:var(--ink)}
.drawer-cta{width:100%;margin-top:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-family:var(--font-sans);font-size:15px;letter-spacing:.04em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn .arw{transition:transform .24s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--jade);color:var(--sand)}
.btn-primary:hover{background:var(--jade-deep)}
.btn-secondary{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-secondary:hover{background:var(--ink);color:var(--sand)}
.btn-sm{height:40px;padding:0 20px;font-size:13px}
.btn-ghost{
  height:auto;padding:0 0 3px;background:none;border:0;border-bottom:1px solid var(--line);
  border-radius:0;color:var(--ink);font-size:14px;
}
.btn-ghost:hover{color:var(--copper);border-color:var(--copper);transform:none}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:48px 0 80px;
  background:linear-gradient(180deg,#F7F3EC 0%,#F1ECE3 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(var(--ink) 1px,transparent 1px),linear-gradient(90deg,var(--ink) 1px,transparent 1px);
  background-size:64px 64px;
}
.page-hero::after{
  content:"安";position:absolute;right:-28px;top:-56px;
  font-family:var(--font-serif);font-size:280px;line-height:1;color:var(--ink);
  opacity:.055;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:28px}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--copper)}
.crumbs span.sep{color:var(--line)}
.crumbs .current{color:var(--ink)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy h1{margin:14px 0 20px}
.hero-copy h1 span{color:var(--jade)}
.hero-lead{font-size:16px;color:var(--ink-2);line-height:1.9;max-width:560px;margin:0 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px}
.hero-media{position:relative}
.hero-media .frame{
  position:relative;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;background:var(--paper);aspect-ratio:5/4;box-shadow:var(--shadow-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .frame::after{
  content:"";position:absolute;left:0;top:0;width:48px;height:3px;background:var(--copper);
}
.hero-float{
  position:absolute;right:-16px;bottom:-24px;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;
  box-shadow:var(--shadow-2);min-width:200px;
}
.hero-float .tag{font-size:11px;letter-spacing:.16em;color:var(--copper);text-transform:uppercase}
.hero-float .big{font-family:var(--font-serif);font-size:26px;line-height:1.2;margin:6px 0 4px;font-variant-numeric:tabular-nums}
.hero-float .sub{font-size:12px;color:var(--muted);margin:0}

/* ---------- layout with aside ---------- */
.layout-aside{display:grid;grid-template-columns:236px 1fr;gap:56px;align-items:start}
.aside-nav{position:sticky;top:96px;border-right:1px solid var(--line);padding-right:24px}
.aside-nav .title{font-size:11px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;margin-bottom:16px}
.aside-nav ul{list-style:none;display:grid;gap:2px}
.aside-nav a{
  display:block;padding:10px 12px 10px 14px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.aside-nav a:hover{color:var(--jade);border-left-color:var(--copper);background:rgba(30,91,76,.045)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.card:hover{border-color:var(--jade);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card .card-num{
  display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--copper);
  font-variant-numeric:tabular-nums;
}
.card h3{margin:10px 0 10px}
.card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0}
.card ul{margin:14px 0 0;list-style:none;display:grid;gap:8px}
.card li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.75}
.card li::before{
  content:"";position:absolute;left:1px;top:.72em;width:6px;height:6px;
  background:var(--copper);border-radius:1px;transform:rotate(45deg);
}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border:1px solid var(--copper);border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;color:var(--copper);background:transparent;
}
.pill--ink{background:var(--ink);border-color:var(--ink);color:var(--sand)}

/* ---------- steps ---------- */
.step-list{display:grid}
.step{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:30px 0;border-top:1px solid var(--line);
}
.step:first-child{border-top:1px solid var(--line)}
.step-num{
  font-family:var(--font-serif);font-size:42px;line-height:1;color:var(--copper);
  font-variant-numeric:tabular-nums;opacity:.92;
}
.step h3{margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);margin:0;line-height:1.85}
.step .meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}

/* ---------- scenes ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.scene-card:hover{border-color:var(--jade);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.scene-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--line)}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.scene-card:hover .thumb img{transform:scale(1.03)}
.scene-card .body{padding:22px}
.scene-card h3{font-size:18px;margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:24px;padding:22px 0;font-family:var(--font-serif);font-size:16.5px;font-weight:600;
  color:var(--ink);transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-family:var(--font-sans);font-size:22px;line-height:1;
  color:var(--copper);transition:transform .24s var(--ease);margin-top:2px;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--jade)}
.faq-item .faq-body{padding:0 0 24px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:820px}
.faq-item .faq-body p{margin:0}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--jade-deep);color:var(--sand);
  border-radius:var(--r-md);padding:56px;
  display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:repeating-radial-gradient(circle at 88% 18%,transparent 0 38px,rgba(245,241,234,.9) 38px 39px);
}
.cta-band > *{position:relative;z-index:1}
.cta-band .eyebrow{color:var(--copper)}
.cta-band h2{color:var(--sand);margin:12px 0 12px;font-size:clamp(22px,2.4vw,32px)}
.cta-band p{color:rgba(245,241,234,.72);font-size:14.5px;margin:0;max-width:520px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-copper{background:var(--copper);color:var(--ink)}
.btn-copper:hover{background:#C68B5C}
.btn-outline-light{border-color:rgba(245,241,234,.6);color:var(--sand);background:transparent}
.btn-outline-light:hover{background:var(--sand);color:var(--ink);border-color:var(--sand)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);color:var(--sand);border-top:1px solid var(--copper);
  padding:64px 0 0;margin-top:96px;
}
.footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:44px;padding-bottom:48px}
.footer-brand .brand-name{color:var(--sand)}
.footer-brand .brand-sub{color:rgba(245,241,234,.5)}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(245,241,234,.62);margin:18px 0 16px;max-width:320px}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;font-size:13px}
.footer-links a{color:var(--copper);transition:opacity .2s var(--ease)}
.footer-links a:hover{opacity:.75}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--sand);margin-bottom:18px;
}
.footer-col ul{list-style:none;display:grid;gap:11px;font-size:13px;color:rgba(245,241,234,.62)}
.footer-col ul li{line-height:1.7;word-break:break-word}
.footer-col a{transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{
  border-top:1px solid rgba(245,241,234,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12px;color:rgba(245,241,234,.6);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:520px}
  .layout-aside{grid-template-columns:1fr;gap:32px}
  .aside-nav{position:static;border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px}
  .aside-nav ul{display:flex;flex-wrap:wrap;gap:8px}
  .aside-nav a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;font-size:13px}
  .aside-nav a:hover{border-color:var(--copper);background:transparent}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .page-hero{padding:36px 0 60px}
  .page-hero::after{font-size:200px;right:-32px;top:-32px}
  .scene-grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .header-inner{height:64px}
  .brand-name{font-size:18px}
  .card-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .step{grid-template-columns:64px 1fr;gap:18px;padding:24px 0}
  .step-num{font-size:32px}
  .hero-float{position:static;margin-top:18px;box-shadow:none;min-width:0}
  .hero-media .frame{aspect-ratio:4/3}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:560px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .section{padding:56px 0}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch;gap:14px}
  .hero-actions .btn-ghost{width:auto;text-align:left}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column}
  .cta-band{padding:32px 22px;border-radius:var(--r-sm)}
  .faq-item summary{font-size:15.5px;gap:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --copper:#B4794A;
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --r-sm:2px;
  --r-md:4px;
  --shadow-1:0 1px 0 var(--line);
  --shadow-2:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --sans:Inter,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.18;letter-spacing:.01em;color:var(--ink);margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(30,91,76,.16)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.eyebrow{
  font-size:12px;letter-spacing:.18em;color:var(--copper);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,2.8vw,38px)}
.sec-Intro{max-width:640px;color:var(--muted);font-size:15px;margin-top:12px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,241,234,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:rgba(245,241,234,.97);box-shadow:0 8px 26px -22px rgba(20,16,14,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:28px;height:28px;border:1.5px solid var(--copper);border-radius:var(--r-sm);
  position:relative;flex:0 0 auto;transition:border-color .24s var(--ease)
}
.brand-mark::before{
  content:"";position:absolute;inset:6px;border:1.5px solid var(--jade);border-radius:50%;
  transition:border-color .24s var(--ease)
}
.brand:hover .brand-mark{border-color:var(--jade)}
.brand:hover .brand-mark::before{border-color:var(--copper)}
.brand-name{
  display:block;font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink);
  letter-spacing:.04em;line-height:1.1
}
.brand-name em{font-style:normal;font-size:12px;letter-spacing:.2em;color:var(--copper);margin-left:4px}
.brand-sub{display:block;font-size:10px;letter-spacing:.24em;color:var(--muted);margin-top:3px}
.nav-desktop{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:14px;letter-spacing:.06em;color:var(--ink-2);
  padding:6px 0;transition:color .24s var(--ease)
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--copper);
  transition:width .24s var(--ease)
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{width:100%;background:var(--jade)}
.nav-cta{margin-left:6px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;letter-spacing:.04em;cursor:pointer;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn .arw{transition:transform .24s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.btn-primary{background:var(--jade);color:var(--sand)}
.btn-primary:hover{background:var(--jade-deep);transform:translateY(-2px)}
.btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px)}
.btn-copper{background:var(--copper);color:var(--ink)}
.btn-copper:hover{background:#c4885a;transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(245,241,234,.7);color:var(--sand)}
.btn-outline-light:hover{background:rgba(245,241,234,.12);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.ghost-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--ink);
  padding-bottom:4px;border-bottom:1px solid var(--line);transition:border-color .24s var(--ease),color .24s var(--ease)
}
.ghost-link span{transition:transform .24s var(--ease)}
.ghost-link:hover{border-color:var(--copper);color:var(--jade)}
.ghost-link:hover span{transform:translateX(4px)}

.nav-toggle{
  display:none;width:44px;height:44px;background:none;border:1px solid var(--line);
  border-radius:var(--r-sm);cursor:pointer;position:relative
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1.5px;background:var(--ink);
  transition:transform .28s var(--ease),opacity .2s var(--ease)
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,14,.42);z-index:70;
  opacity:0;transition:opacity .28s var(--ease)
}
.drawer-mask.is-open{opacity:1}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:80;
  background:var(--sand);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px;overflow-y:auto
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-title{font-size:12px;letter-spacing:.2em;color:var(--copper)}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:transparent;font-size:20px;line-height:1;color:var(--ink);cursor:pointer
}
.drawer-close:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;padding:14px 0;
  font-family:var(--serif);font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line)
}
.drawer-nav a span{font-family:var(--sans);font-size:12px;letter-spacing:.14em;color:var(--copper)}
.drawer-nav a.is-active{color:var(--jade)}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 56px;border-bottom:1px solid var(--line);background:var(--sand)
}
.page-hero::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--copper) 0%,rgba(180,121,74,0) 72%)
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.045;
  background-image:linear-gradient(to right,var(--ink) 1px,transparent 1px),
                   linear-gradient(to bottom,var(--ink) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(120% 80% at 88% 0%,#000 0%,transparent 62%);
  mask-image:radial-gradient(120% 80% at 88% 0%,#000 0%,transparent 62%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.35fr .95fr;gap:56px;align-items:center}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);margin-bottom:20px}
.crumbs a{transition:color .24s var(--ease)}
.crumbs a:hover{color:var(--copper)}
.crumbs span.sep{color:#c9c1b5}
.crumbs .cur{color:var(--ink)}
.page-hero h1{font-size:clamp(30px,3.6vw,46px);max-width:19em;letter-spacing:.005em}
.lead{margin-top:20px;font-size:16px;color:var(--ink-2);max-width:34em;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:28px}
.hero-figure{margin:0;position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-sm);
  border:1px solid var(--line);box-shadow:var(--shadow-2)
}
.hero-figure::before{
  content:"";position:absolute;left:-14px;top:-14px;width:52px;height:52px;
  border-left:1px solid var(--copper);border-top:1px solid var(--copper)
}
.hero-figure figcaption{font-size:12px;color:var(--muted);margin-top:12px;letter-spacing:.04em}

/* ---------- steps bar ---------- */
.steps-wrap{margin-top:44px}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{
  appearance:none;background:none;border:0;border-top:2px solid var(--line);
  padding:14px 0 0;text-align:left;cursor:pointer;color:var(--muted);
  transition:color .24s var(--ease),border-color .24s var(--ease)
}
.step:focus-visible{outline:2px solid var(--copper);outline-offset:4px}
.step-num{display:block;font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--copper)}
.step-label{display:block;font-size:14px;margin-top:4px;letter-spacing:.02em}
.step:hover{color:var(--ink);border-top-color:var(--copper)}
.step.is-current{color:var(--ink);border-top-color:var(--jade);font-weight:600}
.step.is-current .step-num{color:var(--jade)}

/* ---------- timeline ---------- */
.timeline{margin-top:8px}
.tl-item{
  position:relative;display:grid;grid-template-columns:96px minmax(0,1fr);gap:32px;
  padding-bottom:52px
}
.tl-item::before{
  content:"";position:absolute;left:110px;top:58px;bottom:8px;width:1px;background:var(--line)
}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-num{
  font-family:var(--serif);font-size:48px;line-height:1;color:var(--copper);
  opacity:.92;font-variant-numeric:tabular-nums
}
.tl-body h3{font-size:20px;margin-bottom:12px}
.tl-body p{color:var(--ink-2);font-size:15.5px;max-width:60ch}
.tl-points{margin-top:18px;display:grid;gap:10px}
.tl-points li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--muted);line-height:1.8
}
.tl-points li::before{
  content:"";position:absolute;left:0;top:.78em;width:7px;height:7px;
  border:1px solid var(--jade);background:rgba(30,91,76,.1);border-radius:1px
}
.tl-points li b{color:var(--ink);font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  font-size:12px;letter-spacing:.04em;color:var(--jade);
  border:1px solid rgba(30,91,76,.35);border-radius:999px;padding:4px 12px;
  background:rgba(30,91,76,.04)
}
.tag-copper{color:var(--copper);border-color:rgba(180,121,74,.45);background:rgba(180,121,74,.05)}

/* ---------- check block ---------- */
.check-block{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  padding:40px;box-shadow:var(--shadow-1)
}
.check-figure{margin:0;overflow:hidden;border-radius:var(--r-sm);border:1px solid var(--line)}
.check-figure img{width:100%;aspect-ratio:5/4;object-fit:cover;transition:transform .32s var(--ease)}
.check-figure:hover img{transform:scale(1.03)}
.check-body h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px}
.check-body > p{color:var(--muted);font-size:15px;margin-bottom:24px}
.check-list{display:grid;gap:20px}
.check-item{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px}
.check-item .idx{
  font-family:var(--serif);font-size:15px;color:var(--copper);letter-spacing:.1em;
  padding-top:2px
}
.check-item h4{font-size:16px;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- device cards ---------- */
.device-list{display:grid;gap:16px}
.device-card{
  display:grid;grid-template-columns:120px minmax(0,1fr) auto;gap:24px;align-items:center;
  padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease)
}
.device-card:hover{border-color:var(--jade);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.device-thumb{overflow:hidden;border-radius:var(--r-sm);border:1px solid var(--line)}
.device-thumb img{width:120px;height:84px;object-fit:cover;transition:transform .32s var(--ease)}
.device-card:hover .device-thumb img{transform:scale(1.05)}
.device-card h3{font-size:18px;margin-bottom:6px}
.device-card p{font-size:14px;color:var(--muted);line-height:1.8;max-width:62ch}
.device-meta{font-size:12px;letter-spacing:.06em;color:var(--copper);white-space:nowrap}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;color:var(--ink);line-height:1.6;transition:color .24s var(--ease)
}
.faq-q:hover{color:var(--jade)}
.faq-q:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.faq-mark{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:2px;
  transition:transform .24s var(--ease)
}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--copper);border-radius:1px
}
.faq-mark::before{left:0;right:0;top:10px;height:1.5px}
.faq-mark::after{top:0;bottom:0;left:10px;width:1.5px;transition:opacity .24s var(--ease)}
.faq-item.open .faq-mark{transform:rotate(180deg)}
.faq-item.open .faq-mark::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.faq-a > div{overflow:hidden}
.faq-a p{font-size:15px;color:var(--muted);line-height:1.85;padding:0 40px 24px 0;max-width:78ch}
.faq-item.open .faq-a{grid-template-rows:1fr}

/* ---------- cta ---------- */
.cta-band{position:relative;background:var(--jade-deep);color:var(--sand);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,var(--sand) 0 1px,transparent 1px 14px)
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:72px 0}
.cta-band h2{color:var(--sand);font-size:clamp(24px,2.8vw,36px)}
.cta-band .cta-desc{margin-top:16px;font-size:15px;color:rgba(245,241,234,.76);max-width:36em;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.form-card{
  background:rgba(245,241,234,.06);border:1px solid rgba(245,241,234,.18);
  border-radius:var(--r-md);padding:28px
}
.form-card h3{color:var(--sand);font-size:18px;margin-bottom:6px}
.form-card .hint{font-size:13px;color:rgba(245,241,234,.62);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:rgba(245,241,234,.75);margin-bottom:8px;letter-spacing:.04em}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(245,241,234,.24);background:rgba(245,241,234,.06);
  color:var(--sand);font-size:14px;font-family:inherit;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease)
}
.field input::placeholder{color:rgba(245,241,234,.42)}
.field select option{color:var(--ink)}
.field input:focus,.field select:focus{
  outline:none;border-color:rgba(180,121,74,.9);
  box-shadow:0 0 0 2px rgba(180,121,74,.24);background:rgba(245,241,234,.1)
}
.form-card .btn{width:100%}
.form-note{margin-top:14px;font-size:12px;color:rgba(245,241,234,.55);line-height:1.7}
.form-status{
  margin-top:14px;font-size:13px;color:var(--sand);
  border-left:2px solid var(--copper);padding-left:12px;display:none
}
.form-status.is-visible{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(245,241,234,.82);border-top:1px solid var(--copper);position:relative}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;
  padding:64px 0 44px
}
.site-footer .brand-name{color:var(--sand)}
.site-footer .brand-sub{color:rgba(245,241,234,.45)}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(245,241,234,.62);max-width:30em}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;font-size:13px}
.footer-links a{color:rgba(245,241,234,.7);border-bottom:1px solid rgba(245,241,234,.2);padding-bottom:2px;transition:color .24s var(--ease),border-color .24s var(--ease)}
.footer-links a:hover{color:var(--sand);border-color:var(--copper)}
.footer-col h4{font-size:13px;letter-spacing:.18em;color:var(--copper);margin-bottom:18px;font-family:var(--sans);font-weight:600}
.footer-col ul{display:grid;gap:12px;font-size:14px;color:rgba(245,241,234,.66)}
.footer-col a{transition:color .24s var(--ease)}
.footer-col a:hover{color:var(--sand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid rgba(245,241,234,.12);
  font-size:12px;color:rgba(245,241,234,.55);letter-spacing:.03em
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .hero-grid{gap:40px}
  .check-block{gap:36px;padding:32px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-toggle{display:block}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding:40px 0 44px}
  .hero-figure{max-width:520px}
  .hero-figure::before{display:none}
  .section{padding:68px 0}
  .section-tight{padding:52px 0}
  .steps{grid-template-columns:repeat(3,1fr);gap:14px}
  .check-block{grid-template-columns:1fr;padding:28px}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:56px 0}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px;padding:52px 0 36px}
  .tl-item{grid-template-columns:72px minmax(0,1fr);gap:24px}
  .tl-item::before{left:84px}
  .tl-num{font-size:40px}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.8}
  .container{padding:0 18px}
  .header-inner{height:60px}
  .brand-name{font-size:16px}
  .brand-sub{font-size:9px;letter-spacing:.2em}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .page-hero h1{font-size:clamp(26px,6.4vw,34px)}
  .lead{font-size:15px;margin-top:16px}
  .steps{grid-template-columns:repeat(2,1fr);gap:12px}
  .step-label{font-size:13px}
  .tl-item{grid-template-columns:1fr;gap:10px;padding-bottom:40px}
  .tl-item::before{display:none}
  .tl-num{font-size:34px}
  .tl-body h3{font-size:18px}
  .tl-body p{font-size:15px}
  .device-card{grid-template-columns:88px minmax(0,1fr);gap:16px;padding:14px}
  .device-thumb img{width:88px;height:72px}
  .device-meta{grid-column:1 / -1;padding-top:4px}
  .check-body h2{font-size:22px}
  .faq-q{font-size:15px;padding:18px 0;gap:16px}
  .faq-a p{padding-right:0}
  .cta-actions .btn{width:100%}
  .form-card{padding:22px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .steps{grid-template-columns:1fr}
  .brand-name em{display:inline}
  .hero-actions{gap:14px}
  .hero-actions .btn{width:100%}
  .ghost-link{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --copper:#B4794A;
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --radius-s:2px;
  --radius-m:4px;
  --shadow-1:0 1px 0 var(--line);
  --shadow-2:0 18px 40px -28px rgba(20,16,14,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--sand);
  background-image:linear-gradient(rgba(20,16,14,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(20,16,14,.04) 1px,transparent 1px);
  background-size:48px 48px;
  color:var(--ink-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.18;
  letter-spacing:.01em;
  color:var(--ink);
  margin:0;
}
h1{font-size:clamp(30px,4.4vw,52px);}
h2{font-size:clamp(24px,2.8vw,38px);}
h3{font-size:20px;}
h4{font-size:17px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(180,121,74,.24);}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head p{margin-top:14px;max-width:620px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--copper);
  font-family:var(--font-sans);
  margin-bottom:16px;
  text-transform:uppercase;
}
.rule{width:48px;height:1px;background:var(--copper);border:0;margin:0 0 22px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-s);
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  letter-spacing:.04em;
  cursor:pointer;
  transition:transform .3s var(--ease),background-color .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.btn .arw{transition:transform .3s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}
.btn-primary{background:var(--jade);color:var(--sand);}
.btn-primary:hover{background:var(--jade-deep);transform:translateY(-2px);}
.btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}
.link-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink);
  padding-bottom:4px;
  border-bottom:1px solid var(--line);
  transition:color .3s var(--ease),border-color .3s var(--ease);
}
.link-ghost:hover{color:var(--jade);border-color:var(--copper);}
.link-ghost:hover .arw{transform:translateX(4px);}
.link-ghost .arw{transition:transform .3s var(--ease);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(245,241,234,.86);
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,241,234,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:12px;}
.brand-mark{
  position:relative;
  width:28px;
  height:28px;
  border:1.5px solid var(--copper);
  border-radius:var(--radius-s);
  flex:none;
}
.brand-mark::before,
.brand-mark::after{
  content:"";
  position:absolute;
  background:var(--copper);
}
.brand-mark::before{width:1.5px;height:14px;left:50%;top:6px;transform:translateX(-50%) rotate(20deg);}
.brand-mark::after{width:12px;height:1.5px;left:6px;bottom:8px;}
.brand-lockup{display:flex;flex-direction:column;line-height:1;}
.brand-name{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:600;
  letter-spacing:.05em;
  color:var(--ink);
}
.brand-name em{
  font-style:normal;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--copper);
  margin-left:6px;
}
.brand-sub{
  margin-top:5px;
  font-size:9px;
  letter-spacing:.28em;
  color:var(--muted);
  font-family:var(--font-sans);
}
.nav-desktop{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink-2);
  padding:6px 0;
  transition:color .3s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--copper);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);}
.nav-link.is-active::after{width:100%;}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--radius-s);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:70;
  pointer-events:none;
  visibility:hidden;
}
.drawer.open{pointer-events:auto;visibility:visible;}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(20,16,14,.42);
  opacity:0;
  transition:opacity .28s var(--ease);
}
.drawer.open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;
  top:0;
  right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--sand);
  border-left:1px solid var(--line);
  padding:88px 28px 28px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-serif);
  font-size:18px;
  color:var(--ink);
  padding:14px 0;
  border-bottom:1px solid var(--line);
  min-height:44px;
}
.drawer-nav a i{
  font-style:normal;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--copper);
  font-family:var(--font-sans);
}
.drawer-cta{margin-top:28px;}
body.no-scroll{overflow:hidden;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"尊";
  position:absolute;
  right:-40px;
  top:-60px;
  font-family:var(--font-serif);
  font-size:280px;
  line-height:1;
  color:var(--ink);
  opacity:.05;
  pointer-events:none;
}
.page-hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{transition:color .3s var(--ease);}
.breadcrumb a:hover{color:var(--copper);}
.breadcrumb span.sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);}
.page-hero h1{margin-bottom:20px;max-width:14em;}
.page-hero .lead{
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:620px;
  margin-bottom:28px;
}
.page-hero-media{
  position:relative;
  margin:0;
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  overflow:hidden;
  box-shadow:var(--shadow-2);
}
.page-hero-media::before{
  content:"";
  position:absolute;
  top:18px;
  left:18px;
  width:48px;
  height:1px;
  background:var(--copper);
  z-index:2;
}
.page-hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.page-hero-media:hover img{transform:scale(1.03);}

/* ---------- stats bar ---------- */
.stats-bar{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--paper);
  display:grid;
  grid-template-columns:repeat(3,1fr);
  margin-top:-1px;
}
.stat-item{
  padding:28px 32px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;}
.stat-value{
  font-family:var(--font-serif);
  font-size:30px;
  color:var(--jade);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-value small{
  font-size:13px;
  color:var(--muted);
  font-family:var(--font-sans);
  margin-left:6px;
  letter-spacing:.06em;
}
.stat-label{
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- mosaic ---------- */
.mosaic-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.m-card{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:var(--paper);
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.m-card:hover{border-color:var(--jade);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.m-card .m-media{overflow:hidden;display:block;}
.m-card img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.m-card:hover img{transform:scale(1.03);}
.m-card .m-body{
  padding:20px 22px 22px;
  display:block;
}
.m-card h3{font-size:18px;margin-bottom:8px;}
.m-card p{font-size:14px;color:var(--muted);line-height:1.75;}
.m-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--copper);
  border:1px solid rgba(180,121,74,.5);
  border-radius:999px;
  padding:2px 12px;
  margin-bottom:12px;
}
.m-lg-a{grid-column:span 4;}
.m-lg-a .m-media img{aspect-ratio:16/9;}
.m-sm-a{grid-column:span 2;}
.m-sm-a .m-media img{aspect-ratio:1/1;}
.m-sm-b{grid-column:span 2;}
.m-sm-b .m-media img{aspect-ratio:1/1;}
.m-lg-b{grid-column:span 4;}
.m-lg-b .m-media img{aspect-ratio:16/9;}
.m-sm-c,.m-sm-d{grid-column:span 3;}
.m-sm-c .m-media img,.m-sm-d .m-media img{aspect-ratio:21/9;}
.m-card.is-tall .m-media img{aspect-ratio:4/3;}

/* ---------- quotes ---------- */
.quote-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.quote-card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:32px 32px 28px;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.quote-card:hover{border-color:var(--jade);box-shadow:var(--shadow-2);}
.quote-card .qmark{
  font-family:var(--font-serif);
  font-size:56px;
  line-height:1;
  color:var(--copper);
  opacity:.35;
  display:block;
  margin-bottom:6px;
}
.quote-card blockquote{
  margin:0 0 20px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-2);
}
.quote-meta{
  display:flex;
  align-items:center;
  gap:12px;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.quote-avatar{
  width:36px;
  height:36px;
  flex:none;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--sand);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-serif);
  font-size:14px;
  color:var(--jade);
}
.quote-meta strong{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  font-family:var(--font-sans);
}
.quote-meta span{display:block;font-size:12px;color:var(--muted);}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 24px 24px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.step:hover{border-color:var(--copper);transform:translateY(-3px);}
.step-num{
  font-family:var(--font-serif);
  font-size:32px;
  color:var(--copper);
  line-height:1;
  display:block;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- faq ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.faq-aside{position:sticky;top:104px;}
.faq-aside p{margin-top:16px;color:var(--muted);font-size:15px;line-height:1.9;}
.faq-aside .btn{margin-top:26px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  background:none;
  border:0;
  text-align:left;
  cursor:pointer;
  font-size:16px;
  color:var(--ink);
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.5;
  transition:color .3s var(--ease);
  min-height:44px;
}
.faq-q:hover{color:var(--jade);}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex:none;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--copper);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{width:16px;height:1.5px;top:7px;left:0;}
.faq-icon::after{width:1.5px;height:16px;left:7px;top:0;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  padding:0 40px 24px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  background:var(--jade-deep);
  color:var(--sand);
  overflow:hidden;
  border-top:1px solid var(--copper);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:420px;
  height:420px;
  border:1px solid rgba(245,241,234,.14);
  border-radius:50%;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-40px;
  top:-40px;
  width:260px;
  height:260px;
  border:1px solid rgba(245,241,234,.1);
  border-radius:50%;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  padding:72px 0;
}
.cta-inner h2{color:var(--sand);}
.cta-inner p{margin-top:12px;color:rgba(245,241,234,.72);font-size:15px;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex:none;flex-wrap:wrap;}
.btn-copper{background:var(--copper);color:var(--ink);}
.btn-copper:hover{background:#c98a58;transform:translateY(-2px);}
.btn-outline-light{background:transparent;border-color:rgba(245,241,234,.55);color:var(--sand);}
.btn-outline-light:hover{background:rgba(245,241,234,.1);border-color:var(--sand);transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--sand);
  border-top:1px solid var(--copper);
  padding:72px 0 0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand-name{color:var(--sand);}
.footer-brand .brand-sub{color:rgba(245,241,234,.45);}
.footer-desc{
  margin-top:18px;
  font-size:14px;
  line-height:1.85;
  color:rgba(245,241,234,.62);
  max-width:300px;
}
.footer-links{margin-top:18px;display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{
  font-size:13px;
  color:rgba(245,241,234,.72);
  border-bottom:1px solid rgba(180,121,74,.5);
  padding-bottom:2px;
  transition:color .3s var(--ease),border-color .3s var(--ease);
}
.footer-links a:hover{color:var(--copper);border-color:var(--copper);}
.footer-col h4{
  font-size:14px;
  color:var(--sand);
  letter-spacing:.1em;
  margin-bottom:18px;
  font-family:var(--font-sans);
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:13px;color:rgba(245,241,234,.62);line-height:1.7;}
.footer-col a{
  font-size:13px;
  color:rgba(245,241,234,.72);
  transition:color .3s var(--ease);
}
.footer-col a:hover{color:var(--copper);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid rgba(245,241,234,.12);
  font-size:12px;
  color:rgba(245,241,234,.6);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-desktop{gap:20px;}
  .nav-link{font-size:13px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-desktop{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:64px;}
  .page-hero{padding:48px 0 44px;}
  .page-hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{max-width:none;}
  .page-hero-media img{aspect-ratio:16/9;}
  .mosaic-grid{grid-template-columns:repeat(4,1fr);}
  .m-lg-a{grid-column:span 4;}
  .m-sm-a{grid-column:span 2;}
  .m-sm-b{grid-column:span 2;}
  .m-lg-b{grid-column:span 4;}
  .m-sm-c,.m-sm-d{grid-column:span 2;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;gap:36px;}
  .faq-aside{position:static;}
  .quote-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0;}
  .stat-item{padding:24px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px;}
  .stats-bar{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid var(--line);}
  .stat-item:first-child{border-top:0;}
  .mosaic-grid{grid-template-columns:1fr;gap:16px;}
  .m-lg-a,.m-sm-a,.m-sm-b,.m-lg-b,.m-sm-c,.m-sm-d{grid-column:span 1;}
  .m-card .m-media img,
  .m-lg-a .m-media img,
  .m-lg-b .m-media img,
  .m-sm-a .m-media img,
  .m-sm-b .m-media img,
  .m-sm-c .m-media img,
  .m-sm-d .m-media img{aspect-ratio:16/10;}
  .steps{grid-template-columns:1fr;}
  .quote-card{padding:26px 22px 22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .page-hero::after{font-size:200px;right:-30px;top:-30px;}
}
@media (max-width:479px){
  .container{padding:0 18px;}
  .header-inner{height:60px;}
  .brand-name{font-size:17px;}
  .brand-name em{font-size:11px;}
  .brand-sub{font-size:8px;}
  .btn{width:100%;padding:0 20px;}
  .btn-sm{width:auto;}
  .link-ghost{width:auto;}
  .page-hero{padding:36px 0 32px;}
  .page-hero::after{display:none;}
  .stat-value{font-size:26px;}
  .quote-card .qmark{font-size:44px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink:#14100E;
  --ink-2:#2A231F;
  --jade:#1E5B4C;
  --jade-deep:#123A31;
  --jade-soft:rgba(30,91,76,.08);
  --copper:#B4794A;
  --copper-soft:rgba(180,121,74,.14);
  --sand:#F5F1EA;
  --paper:#FFFFFF;
  --line:#E2DCD2;
  --muted:#6E655C;
  --warn:#A63A2A;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --sh-card:0 1px 0 var(--line);
  --sh-float:0 18px 40px -28px rgba(20,16,14,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Microsoft YaHei",serif;
  --font-sans:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--sand);
  background-image:
    radial-gradient(900px 520px at 88% -8%,rgba(30,91,76,.07),transparent 62%),
    radial-gradient(720px 460px at 4% 4%,rgba(180,121,74,.09),transparent 60%);
  background-repeat:no-repeat;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:2px;}
a{color:var(--jade);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--copper);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);font-weight:600;line-height:1.22;letter-spacing:.01em;margin:0;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(30,91,76,.18);color:var(--ink);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--copper);font-weight:600;margin-bottom:14px;
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,2.8vw,38px);}
.section-head p{margin:10px 0 0;color:var(--muted);font-size:15px;max-width:640px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,241,234,.78);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,241,234,.94);
  border-bottom-color:var(--line);
  backdrop-filter:blur(10px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;position:relative;border-radius:6px;
  border:1.5px solid var(--copper);
  background:linear-gradient(140deg,rgba(180,121,74,.16),rgba(30,91,76,.10));
}
.brand-mark::before{
  content:"";position:absolute;inset:7px;border:1.5px solid var(--jade);border-radius:2px;
  transform:rotate(45deg);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;margin:-2px 0 0 -2px;
  border-radius:50%;background:var(--copper);
}
.brand-lockup{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-family:var(--font-serif);font-size:19px;font-weight:600;letter-spacing:.04em;color:var(--ink);}
.brand-name em{font-style:normal;font-size:12px;letter-spacing:.2em;color:var(--copper);margin-left:6px;vertical-align:2px;}
.brand-sub{font-size:9px;letter-spacing:.28em;color:var(--muted);margin-top:3px;}
.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:10px 12px;font-size:14px;letter-spacing:.06em;color:var(--ink-2);
  border-radius:var(--r-btn);transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-cta{margin-left:14px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.04em;cursor:pointer;
  border:1px solid transparent;transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn .arw{transition:transform .24s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}
.btn-primary{background:var(--jade);color:var(--sand);}
.btn-primary:hover{background:var(--jade-deep);color:var(--sand);transform:translateY(-2px);}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{background:var(--ink);color:var(--sand);transform:translateY(-2px);}
.btn-copper{background:var(--copper);color:var(--ink);}
.btn-copper:hover{background:#c98c5c;color:var(--ink);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:var(--sand);border-color:rgba(245,241,234,.6);}
.btn-outline-light:hover{background:rgba(245,241,234,.12);color:var(--sand);border-color:var(--sand);transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;}
.ghost-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink);font-weight:600;
  border-bottom:1px solid var(--line);padding-bottom:2px;
}
.ghost-link:hover{color:var(--jade);border-bottom-color:var(--copper);}
.ghost-link .arw{transition:transform .24s var(--ease);}
.ghost-link:hover .arw{transform:translateX(4px);}

/* ---------- pills / badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;color:var(--copper);
  border:1px solid rgba(180,121,74,.5);background:transparent;
}
.pill-solid{background:var(--ink);color:var(--sand);border-color:var(--ink);}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(20,16,14,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(20,16,14,.04) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(70% 80% at 20% 10%,#000,transparent 78%);
  mask-image:radial-gradient(70% 80% at 20% 10%,#000,transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--copper);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);}
.page-hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.16;margin-bottom:18px;}
.page-hero h1 .hl{
  color:var(--jade);position:relative;white-space:nowrap;
}
.page-hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:6px;background:var(--copper-soft);
  z-index:-1;border-radius:2px;
}
.hero-lead{font-size:16px;color:var(--ink-2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-media{position:relative;}
.hero-media .frame{
  position:relative;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--paper);box-shadow:var(--sh-float);
}
.hero-media .frame::before{
  content:"";position:absolute;left:0;top:22px;width:48px;height:2px;background:var(--copper);z-index:2;
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease);}
.hero-media .frame:hover img{transform:scale(1.03);}
.hero-float{
  position:absolute;right:-14px;bottom:-22px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px 20px;box-shadow:var(--sh-float);min-width:184px;
}
.hero-float .hf-label{font-size:11px;letter-spacing:.16em;color:var(--copper);text-transform:uppercase;}
.hero-float .hf-num{font-family:var(--font-serif);font-size:26px;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums;}
.hero-float .hf-note{font-size:12px;color:var(--muted);}

/* ---------- checklist block ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.split-media{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper);
  box-shadow:var(--sh-card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.check-list{display:grid;gap:18px;margin-top:26px;}
.check-item{
  display:grid;grid-template-columns:44px 1fr;gap:18px;align-items:start;
  padding:20px 22px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.check-item:hover{border-color:var(--jade);transform:translateY(-2px);box-shadow:var(--sh-float);}
.check-num{
  font-family:var(--font-serif);font-size:22px;color:var(--copper);line-height:1;
  padding-top:2px;font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:17px;margin-bottom:4px;}
.check-item p{margin:0;font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- guide layout ---------- */
.guide-wrap{display:grid;grid-template-columns:250px 1fr;gap:56px;align-items:start;}
.guide-side{
  position:sticky;top:96px;border-right:1px solid var(--line);padding-right:24px;
}
.guide-side .side-title{
  font-size:12px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;margin-bottom:18px;
}
.side-nav{display:grid;gap:4px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r-btn);
  font-size:14px;color:var(--ink-2);border-left:2px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.side-nav a .idx{font-size:11px;color:var(--copper);font-variant-numeric:tabular-nums;letter-spacing:.1em;}
.side-nav a:hover{background:var(--jade-soft);color:var(--jade);}
.side-nav a.is-current{background:var(--jade-soft);color:var(--jade);border-left-color:var(--copper);font-weight:600;}
.side-note{
  margin-top:24px;padding:16px;border:1px dashed var(--line);border-radius:var(--r-card);
  font-size:13px;color:var(--muted);line-height:1.8;background:rgba(255,255,255,.5);
}
.side-note strong{display:block;color:var(--ink);font-size:13px;margin-bottom:4px;font-weight:600;}

.faq-group{margin-bottom:52px;scroll-margin-top:100px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;}
.group-head .g-num{
  font-family:var(--font-serif);font-size:15px;color:var(--copper);letter-spacing:.12em;
  border:1px solid rgba(180,121,74,.45);border-radius:var(--r-pill);padding:2px 12px;
}
.group-head h2{font-size:clamp(20px,2.2vw,26px);}
.group-lead{font-size:14px;color:var(--muted);margin:-6px 0 20px;}
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-family:var(--font-serif);font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--jade);}
.faq-icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;margin-top:4px;border-radius:50%;
  border:1px solid var(--line);transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--jade);transform:translate(-50%,-50%);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;}
.faq-item.is-open .faq-icon{border-color:var(--copper);transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--ink-2);}
.faq-a-inner p:last-child{margin-bottom:0;}
.faq-a-inner ul{display:grid;gap:8px;margin:10px 0 0;}
.faq-a-inner li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-2);}
.faq-a-inner li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;background:var(--copper);border-radius:1px;
}

/* ---------- dark cta ---------- */
.cta-band{
  background:var(--jade-deep);color:var(--sand);position:relative;overflow:hidden;
  border-radius:16px;padding:56px;border:1px solid rgba(245,241,234,.12);
}
.cta-band::before{
  content:"";position:absolute;inset:-30% -10% auto auto;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(245,241,234,.12);box-shadow:0 0 0 60px rgba(245,241,234,.03),0 0 0 120px rgba(245,241,234,.02);
  pointer-events:none;
}
.cta-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.cta-band h2{color:var(--sand);font-size:clamp(22px,2.6vw,34px);margin-bottom:12px;}
.cta-band p{color:rgba(245,241,234,.78);font-size:15px;margin:0;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:28px;padding-top:22px;
  border-top:1px solid rgba(245,241,234,.16);font-size:13px;color:rgba(245,241,234,.7);
}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{width:6px;height:6px;border-radius:50%;background:var(--copper);display:inline-block;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--sand);border-top:1px solid var(--copper);margin-top:96px;}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding:64px 0 48px;
}
.site-footer .brand{color:var(--sand);}
.site-footer .brand-name{color:var(--sand);}
.site-footer .brand-sub{color:rgba(245,241,234,.5);}
.footer-desc{font-size:13px;color:rgba(245,241,234,.66);line-height:1.85;margin:16px 0 18px;max-width:300px;}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-links a{font-size:13px;color:rgba(245,241,234,.78);border-bottom:1px solid rgba(245,241,234,.2);padding-bottom:1px;}
.footer-links a:hover{color:var(--copper);border-bottom-color:var(--copper);}
.footer-col h4{font-family:var(--font-sans);font-size:12px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:13px;color:rgba(245,241,234,.7);line-height:1.7;}
.footer-col a{font-size:13px;color:rgba(245,241,234,.78);}
.footer-col a:hover{color:var(--copper);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(245,241,234,.12);
  font-size:12px;color:rgba(245,241,234,.55);
}

/* ---------- mobile drawer ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);cursor:pointer;padding:0;position:relative;flex:0 0 44px;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1.5px;background:var(--ink);border-radius:2px;
  transition:transform .28s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,14,.42);opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--sand);
  z-index:95;transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px;overflow-y:auto;border-left:1px solid var(--line);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);
  cursor:pointer;font-size:18px;line-height:1;color:var(--ink);
}
.drawer-nav{display:grid;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  display:flex;align-items:center;gap:12px;padding:12px 8px;font-family:var(--font-serif);
  font-size:18px;color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer-nav a .idx{font-family:var(--font-sans);font-size:11px;color:var(--copper);letter-spacing:.14em;}
.drawer-nav a.is-active{color:var(--jade);}
.drawer-cta{margin-top:auto;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .hero-grid{gap:40px;}
  .guide-wrap{grid-template-columns:220px 1fr;gap:40px;}
}
@media (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-toggle{display:block;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{max-width:560px;}
  .hero-float{position:static;margin-top:16px;display:inline-block;box-shadow:none;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media{order:-1;}
  .guide-wrap{grid-template-columns:1fr;gap:28px;}
  .guide-side{position:static;border-right:0;border-bottom:1px solid var(--line);padding:0 0 20px;}
  .side-nav{grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .side-nav a{border-left:0;border:1px solid var(--line);background:var(--paper);white-space:nowrap;}
  .side-nav a.is-current{border-color:var(--jade);}
  .side-note{margin-top:16px;}
  .cta-band{padding:40px 32px;}
  .cta-grid{grid-template-columns:1fr;gap:24px;}
  .cta-actions{justify-content:flex-start;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .brand-name{font-size:17px;}
  .brand-name em{font-size:11px;}
  .brand-sub{display:none;}
  .section{padding:56px 0;}
  .page-hero{padding:36px 0 44px;}
  .page-hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{flex:1 1 100%;}
  .check-item{grid-template-columns:36px 1fr;padding:16px 18px;gap:14px;}
  .check-num{font-size:19px;}
  .faq-q{font-size:15px;padding:16px 0;}
  .faq-a-inner{padding-right:12px;font-size:14.5px;}
  .cta-band{padding:32px 22px;border-radius:12px;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:44px 0 32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .group-head{flex-wrap:wrap;gap:10px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .brand-name{font-size:16px;}
  .faq-q{font-size:14.5px;}
  .hero-media img{aspect-ratio:3/2;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}