:root{--ink:#151313;--muted:#656966;--paper:#f8f8f4;--line:rgba(21,19,19,.12);--rose:#a72f45;--fresh:#caff5a;--serif:"Noto Serif SC","Songti SC",serif;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans)}a{color:inherit}.site-header{height:76px;padding:0 clamp(18px,5vw,82px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(248,248,244,.9);backdrop-filter:blur(16px);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand span{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;background:var(--ink);color:white;font-family:var(--serif)}.brand strong{font-family:var(--serif)}nav{display:flex;align-items:center;gap:22px;font-size:14px}.bag-link{min-height:38px;padding:0 14px;display:inline-flex;align-items:center;border-radius:8px;background:var(--ink);color:white;text-decoration:none}.breadcrumb{display:flex;gap:8px;align-items:center;padding:24px clamp(18px,5vw,82px);font-size:13px;color:var(--muted);overflow:hidden;white-space:nowrap}.breadcrumb a{text-decoration:none}.product-detail{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(360px,.78fr);gap:clamp(28px,5vw,72px);padding:10px clamp(18px,5vw,82px) 80px}.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-content:start}.gallery img,.image-empty{width:100%;aspect-ratio:1/1.12;object-fit:cover;border-radius:8px;background:#edf0ed;box-shadow:0 14px 38px rgba(21,19,19,.08)}.gallery img:first-child{grid-column:1/-1;aspect-ratio:4/3}.summary{position:sticky;top:106px;align-self:start}.eyebrow{margin:0 0 14px;color:var(--rose);font-weight:700;font-size:12px}.summary h1{font:700 clamp(34px,4vw,58px)/1.14 var(--serif);margin:0 0 18px}.lead{color:var(--muted);line-height:1.9;font-size:16px}.price-row{margin:28px 0;padding:20px;border-block:1px solid var(--line);display:flex;align-items:end;justify-content:space-between}.price-row span{color:var(--muted);font-size:13px}.price-row strong{font-size:34px}.specs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0}.specs div{padding:14px;border:1px solid var(--line);border-radius:8px;background:white}.specs dt{font-size:12px;color:var(--muted)}.specs dd{margin:5px 0 0;font-weight:700}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:22px}.primary,.secondary{min-height:48px;border-radius:8px;display:grid;place-items:center;text-decoration:none}.primary{background:var(--ink);color:white}.secondary{border:1px solid var(--ink);background:white}.notice{font-size:12px;color:var(--muted);line-height:1.7}.mobile-tabbar{display:none}@media(max-width:820px){html{scroll-padding-bottom:92px}body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}.site-header{height:68px;padding:0 16px}nav a:not(.bag-link){display:none}.product-detail{display:block;padding:0 16px 96px}.breadcrumb{padding:18px 16px}.gallery{gap:8px}.summary{position:static;margin-top:28px}.summary h1{font-size:34px}.specs,.actions{grid-template-columns:1fr}.mobile-tabbar{position:fixed;left:10px;right:10px;bottom:max(10px,env(safe-area-inset-bottom));z-index:38;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;min-height:66px;padding:7px;border:1px solid rgba(21,19,19,.1);border-radius:14px;background:rgba(255,255,255,.92);box-shadow:0 18px 52px rgba(21,19,19,.18);backdrop-filter:blur(18px)}.mobile-tabbar a{display:grid;place-items:center;align-content:center;gap:3px;min-width:0;min-height:50px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:11px;font-weight:700}.mobile-tabbar a.active{background:var(--ink);color:#fff}.mobile-tabbar svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.mobile-tabbar span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}