:root{
  --ink:#16130f;--ink-2:#3b352d;--ink-3:#6f665a;
  --paper:#f3eee3;--paper-2:#e9e1d1;--line:rgba(22,19,15,.14);
  --cinnabar:#9b2d24;--gold:#a2874c;
  --serif-en:"Noto Serif Display","Noto Serif",Georgia,"Times New Roman",serif;
  --serif-zh:"Noto Serif TC","Noto Serif CJK TC","Songti TC","PMingLiU",serif;
  --sans:"Noto Sans",system-ui,-apple-system,"Segoe UI",Arial,"PingFang TC","Microsoft JhengHei",sans-serif;
  --max:1180px;--gutter:clamp(20px,5vw,64px)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img{max-width:100%;display:block;height:auto}
.zh{font-family:var(--serif-zh);letter-spacing:.04em}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:12px 16px;z-index:50}
.skip:focus{left:8px;top:8px}
a:focus-visible,label:focus-visible,summary:focus-visible,#navtoggle:focus-visible+label{outline:2px solid var(--cinnabar);outline-offset:3px}
/* header */
.hdr{position:sticky;top:0;z-index:20;background:rgba(243,238,227,.95);border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(8px)){.hdr{background:rgba(243,238,227,.88);backdrop-filter:blur(12px)}}
.hdr-in{position:relative;max-width:var(--max);margin:0 auto;padding:0 var(--gutter);height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-height:44px}
.seal{width:40px;height:40px;display:grid;place-items:center;background:var(--cinnabar);color:#f7efe2;font-family:var(--serif-zh);font-size:20px;border-radius:4px}
.brand b{font-family:var(--serif-en);font-weight:500;font-size:19px;letter-spacing:.02em;display:block;line-height:1.1}
.brand small{font-family:var(--serif-zh);font-size:12px;color:var(--ink-3);letter-spacing:.3em}
.nav{display:flex;gap:28px;font-size:14px;letter-spacing:.04em}
.nav a{text-decoration:none;min-height:44px;display:flex;align-items:center;color:var(--ink-2)}
.nav a:hover{color:var(--cinnabar)}
#navtoggle{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.menu-btn{display:none;min-width:44px;min-height:44px;border:1px solid var(--line);border-radius:4px;font-size:15px;cursor:pointer;align-items:center;justify-content:center;gap:8px;padding:0 14px;user-select:none}
@media (max-width:980px){
  .menu-btn{display:inline-flex}
  .nav{position:absolute;left:0;right:0;top:68px;flex-direction:column;gap:0;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 18px 40px rgba(28,24,18,.12);padding:6px var(--gutter) 14px;display:none}
  .nav a{min-height:48px;border-bottom:1px solid var(--line);font-size:16px}
  #navtoggle:checked~.nav{display:flex}
}
/* hero */
.hero{background:var(--ink);color:#efe7d8;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 60% 70% at 78% 40%,rgba(162,135,76,.2),transparent 70%)}
.hero-in{position:relative;max-width:var(--max);margin:0 auto;padding:clamp(56px,9vw,120px) var(--gutter);display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,5vw,72px);align-items:center}
.kicker{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);margin:0 0 22px}
.hero h1{font-family:var(--serif-en);font-weight:400;font-size:clamp(2.2rem,5.2vw,4rem);line-height:1.08;margin:0 0 10px;letter-spacing:-.01em}
.h1zh{font-family:var(--serif-zh);font-size:clamp(1.25rem,2.4vw,1.7rem);color:#d8ccb6;margin:0 0 26px;letter-spacing:.18em}
.lede{max-width:34em;color:#cfc4b0;margin:0 0 8px}
.lede.zh{font-size:15px;color:#b6ab97}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:3px;text-decoration:none;font-size:15px;letter-spacing:.04em;border:1px solid transparent;transition:background .25s}
.btn-p{background:#efe7d8;color:var(--ink)}
.btn-p:hover{background:#fff}
.hero-fig{margin:0}
.frame{position:relative;border:1px solid rgba(162,135,76,.45);padding:10px;background:rgba(255,255,255,.03)}
.frame picture{display:block}
.frame img{width:100%}
.hero-fig figcaption{font-size:12.5px;color:#a99d88;margin-top:12px;letter-spacing:.03em}
/* sections */
section{scroll-margin-top:72px}
.sec{max-width:var(--max);margin:0 auto;padding:clamp(64px,9vw,112px) var(--gutter)}
.sec-k{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--cinnabar);margin:0 0 14px}
.sec h2{font-family:var(--serif-en);font-weight:400;font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.15;margin:0 0 6px}
.sub{font-size:1.1rem;color:var(--ink-3);margin:0 0 28px}
.cols2{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(20px,3vw,48px);max-width:900px}
.cols2 h3{font-family:var(--serif-en);font-weight:500;font-size:1.2rem;margin:0 0 4px}
.cols2 .zh{color:var(--ink-3);font-size:.95rem;margin:0 0 8px}
.band{background:var(--paper-2)}
/* product */
.prod{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
.prod .frame{border-color:var(--line);background:#fff}
.prod-fig{margin:0}
.prod h3{font-family:var(--serif-en);font-weight:400;font-size:clamp(1.6rem,2.8vw,2.2rem);margin:0}
.namezh{font-family:var(--serif-zh);font-size:1.3rem;letter-spacing:.2em;margin:4px 0 18px}
.motto{font-family:var(--serif-zh);font-size:1.05rem;color:var(--cinnabar);letter-spacing:.12em;margin:0 0 6px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px;padding:0;list-style:none}
.tags li{border:1px solid var(--line);padding:4px 12px;font-family:var(--serif-zh);font-size:14px;border-radius:2px;background:#fbf8f1}
.disc{border-left:2px solid var(--cinnabar);padding:10px 14px;background:#fbf8f1;font-size:14px;margin:20px 0}
.fig-disc{font-size:13px;color:var(--ink-2);margin-top:10px;border-left:2px solid var(--cinnabar);padding-left:10px}
.about{max-width:46em}
.rule{width:56px;height:1px;background:var(--gold);margin:26px 0}
/* faq */
.faq{max-width:52em}
details{border-top:1px solid var(--line)}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;min-height:56px;padding:8px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-family:var(--serif-en);font-size:1.08rem;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--cinnabar);font-size:1.4rem;flex:none}
details[open] summary::after{content:"\2212"}
details p{margin:0 0 16px;font-size:15px}
.qzh{display:block;font-size:.95rem;color:var(--ink-3);margin-top:2px}
/* footer */
footer{background:#0f0d0a;color:#a89d8a;font-size:14px}
.ft{max-width:var(--max);margin:0 auto;padding:48px var(--gutter);display:grid;grid-template-columns:1.6fr 1fr;gap:28px}
.ft h2{color:#e9e0cf;font-family:var(--serif-en);font-weight:400;margin:0 0 10px;font-size:1rem}
.ft nav a{display:flex;align-items:center;min-height:44px;text-decoration:none}
.ft nav a:hover{color:#e9e0cf}
.ft-note{border-top:1px solid rgba(255,255,255,.08);text-align:center;padding:16px var(--gutter);font-size:12.5px;margin:0}
/* 404 */
.nf{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px var(--gutter)}
.nf .btn{background:var(--ink);color:var(--paper)}
@media (max-width:980px){
  .hero-in,.prod{grid-template-columns:1fr}
  .hero-fig{max-width:440px}
  .prod-fig{max-width:520px}
  .cols2,.ft{grid-template-columns:1fr}
}
@media (max-width:640px){
  .brand small{display:none}
  .ctas .btn{flex:1 1 100%}
  .hero-in{padding-top:44px;padding-bottom:56px}
}
@media (prefers-reduced-motion:no-preference){.fade{animation:fade .9s ease both}}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}