:root{
  --bg:#ffffff;
  --surface:#f6f6f7;
  --text:#111114;
  --muted:#6b6b76;
  --line:#e7e7ea;
  --accent:#111114;
  --radius:14px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.small{font-size:13px}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;letter-spacing:.14em;font-size:18px}
.logo span{color:var(--muted);font-weight:500}
.nav{display:flex;gap:28px;font-size:15px}
.nav a:hover{opacity:.6}
.cart-btn{background:var(--accent);color:#fff;border:0;border-radius:999px;padding:9px 18px;font-size:14px;font-weight:600;cursor:pointer}
.cart-count{background:#fff;color:#111;border-radius:999px;padding:0 7px;margin-left:6px;font-size:12px;font-weight:700}

/* Hero */
.hero{padding:80px 0 60px;background:linear-gradient(180deg,#f7f7f8,#fff)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:12px;color:var(--muted);margin:0 0 12px}
.hero h1{font-size:54px;line-height:1.06;margin:0 0 18px;letter-spacing:-.02em}
.lead{font-size:18px;color:var(--muted);max-width:44ch;margin:0 0 28px}
.hero-art{display:flex;justify-content:center}
.blob{width:320px;height:320px;border-radius:40% 60% 55% 45%;background:linear-gradient(140deg,#111,#5b5b66 45%,#c9c9d2);box-shadow:0 30px 60px rgba(0,0,0,.12)}

/* Buttons */
.btn{display:inline-block;border:0;border-radius:999px;padding:13px 28px;font-size:15px;font-weight:600;cursor:pointer;text-align:center}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{opacity:.86}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.full{width:100%;margin-top:10px}

/* Trust bar */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:28px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.trust div{display:flex;flex-direction:column;gap:4px}
.trust strong{font-size:15px}
.trust span{font-size:13px;color:var(--muted)}

/* Sections */
.section{padding:80px 24px}
.section-title{font-size:34px;letter-spacing:-.02em;margin:0 0 28px}

/* Filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 16px;font-size:14px;cursor:pointer}
.chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Product grid */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.card{cursor:pointer}
.thumb{position:relative;aspect-ratio:1/1;border-radius:var(--radius);overflow:hidden;background:var(--surface);display:flex;align-items:center;justify-content:center}
.thumb .emoji{font-size:64px}
.tag{position:absolute;top:12px;left:12px;background:#fff;border-radius:999px;padding:4px 10px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.card h3{font-size:16px;margin:14px 0 4px;font-weight:600}
.price{color:var(--muted);font-size:15px}
.price b{color:var(--text)}

/* About */
.about{background:var(--surface)}
.about-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.about h2{font-size:34px;margin:0 0 16px;letter-spacing:-.02em}
.ticks{list-style:none;padding:0;margin:24px 0 0}
.ticks li{padding-left:26px;position:relative;margin-bottom:10px}
.ticks li::before{content:"✓";position:absolute;left:0;color:var(--text);font-weight:700}
.about-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.quote{font-size:20px;margin:0 0 12px;line-height:1.4}
.author{color:var(--muted);margin:0;font-size:14px}

/* FAQ */
.faq{max-width:760px}
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{font-weight:600;cursor:pointer;font-size:16px}
details p{color:var(--muted);margin:12px 0 0}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:48px 0;background:#fff}
.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-nav{display:flex;gap:22px;font-size:14px;color:var(--muted)}

/* Drawer */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:.25s;z-index:50}
.overlay.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:400px;max-width:92vw;background:#fff;z-index:60;transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column;box-shadow:-10px 0 30px rgba(0,0,0,.12)}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line)}
.drawer-head h3{margin:0;font-size:18px}
.close{background:none;border:0;font-size:26px;line-height:1;cursor:pointer;color:var(--muted)}
.drawer-body{flex:1;overflow:auto;padding:18px 22px}
.ci{display:flex;gap:14px;margin-bottom:18px}
.ci .thumb{width:64px;height:64px;flex:0 0 64px;border-radius:10px;font-size:30px}
.ci-info{flex:1}
.ci-info h4{margin:0 0 4px;font-size:15px}
.ci-info .muted{font-size:13px}
.qty{display:flex;align-items:center;gap:10px;margin-top:8px}
.qty button{width:26px;height:26px;border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer}
.drawer-foot{border-top:1px solid var(--line);padding:18px 22px}
.row{display:flex;justify-content:space-between;font-size:16px;margin-bottom:4px}

/* Modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:70;padding:24px}
.modal.show{display:flex}
.modal-card{background:#fff;border-radius:18px;max-width:760px;width:100%;position:relative;max-height:88vh;overflow:auto}
.modal-card .close{position:absolute;top:14px;right:16px;z-index:2}
.modal-body{display:grid;grid-template-columns:1fr 1fr}
.modal-body .pimg{background:var(--surface);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;font-size:100px}
.pinfo{padding:32px}
.pinfo h2{margin:0 0 8px;font-size:26px}
.pinfo .price{font-size:20px;margin:0 0 18px}
.pinfo p{color:var(--muted)}
.sizes{display:flex;gap:8px;margin:18px 0}
.sizes button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 14px;cursor:pointer;font-size:14px}
.sizes button.active{background:var(--accent);color:#fff;border-color:var(--accent)}

.empty{text-align:center;color:var(--muted);padding:40px 0}

/* 品牌导航条 */
.brandbar{border-bottom:1px solid var(--line);background:#fff}
.brandbar-inner{display:flex;align-items:center;gap:24px;padding:14px 24px;flex-wrap:wrap}
#brandStrip{display:flex;gap:22px;flex-wrap:wrap}
.brandlink{font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;opacity:.75}
.brandlink:hover{opacity:1}

/* 双维度筛选 */
.filter-row{display:flex;flex-direction:column;gap:10px;margin-bottom:26px}
.filters{display:flex;gap:10px;flex-wrap:wrap}
#brandFilters .chip{font-weight:600}

/* 商品品牌标签 */
.brand{margin:12px 0 2px;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.ci-info .brand{margin:0 0 2px}

/* 页脚声明 */
.disclaimer{border-top:1px solid var(--line);padding-top:18px;margin-top:24px;max-width:820px}

/* 手表矢量图容器 */
.thumb svg{width:76%;height:76%}
.ci .thumb svg{width:80%;height:80%}
.hero-art svg{width:300px;height:420px;filter:drop-shadow(0 26px 40px rgba(0,0,0,.16))}
.pimg svg{width:70%;height:70%}

/* 详情弹窗补充 */
.tagline{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;background:var(--surface);border-radius:999px;padding:4px 10px;margin-bottom:10px}
.specs{list-style:none;padding:0;margin:16px 0 20px;border-top:1px solid var(--line)}
.specs li{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.variant-label{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:4px}
.linkbtn{border:0;background:none;cursor:pointer;font-size:13px;margin-left:auto;text-decoration:underline}

/* 结账页 */
.checkout{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;padding:56px 24px 90px;align-items:start}
.form{display:flex;flex-direction:column;gap:16px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600}
.form input,.form select,.form textarea{
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:15px;font-family:inherit;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid #111;outline-offset:-1px}
.pay{border:1px solid var(--line);border-radius:12px;padding:18px;margin:6px 0 0}
.pay legend{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:0 6px}
.radio{display:flex !important;flex-direction:row !important;align-items:flex-start;gap:10px;font-weight:400 !important;margin-bottom:12px;cursor:pointer}
.radio input{margin-top:4px}
.radio b{font-size:15px}
.radio em{display:block;font-style:normal;color:var(--muted);font-size:13px}
.btn.big{padding:16px 28px;font-size:16px}

.summary{background:var(--surface);border-radius:16px;padding:24px;position:sticky;top:88px}
.summary h3{margin:0 0 18px;font-size:18px}
.summary .row{display:flex;justify-content:space-between;margin:10px 0;font-size:15px}
.summary hr{border:0;border-top:1px solid var(--line);margin:14px 0}
.summary .total{font-size:20px}
.summary .total strong{font-size:22px}

/* 成功页 */
.thanks{max-width:720px;text-align:center;padding:80px 24px 100px}
.thanks .tick{width:64px;height:64px;border-radius:50%;background:#111;color:#fff;font-size:32px;display:flex;align-items:center;justify-content:center;margin:0 auto 24px}
.thanks h1{font-size:42px;margin:0 0 12px;letter-spacing:-.02em}
.thanks .lead{font-size:18px;color:var(--muted);margin:0 0 40px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:left;margin-bottom:40px}
.steps div{background:var(--surface);border-radius:14px;padding:20px}
.steps span{display:inline-flex;width:26px;height:26px;border-radius:50%;background:#111;color:#fff;font-size:13px;align-items:center;justify-content:center;margin-bottom:10px}
.steps p{margin:0;font-size:14px;color:var(--muted);line-height:1.6}
.thanks-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:24px}

/* Responsive */
@media (max-width:960px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner,.about-inner{grid-template-columns:1fr}
  .hero h1{font-size:40px}
  .trust{grid-template-columns:repeat(2,1fr)}
  .modal-body{grid-template-columns:1fr}
  .nav{display:none}
  .checkout{grid-template-columns:1fr}
  .summary{position:static;order:-1}
  .steps{grid-template-columns:1fr}
}
@media (max-width:520px){
  .grid{grid-template-columns:1fr}
  .f2{grid-template-columns:1fr}
  .hero-art svg{width:220px;height:300px}
}