/* =========================================================
   腕间时光  —  核心样式
   高端 · 响应式 · 零外链依赖
   ========================================================= */

:root {
  --bg:            #0b0b0d;
  --bg-soft:       #131318;
  --surface:       #1a1a20;
  --surface-2:     #222229;
  --line:          rgba(201,169,106,.22);
  --line-soft:     rgba(255,255,255,.08);

  --gold:          #c9a96a;
  --gold-bright:   #e8d5a0;
  --gold-deep:     #a6843f;

  --text:          #f4f1ea;
  --text-muted:    #a8a39a;
  --text-dim:      #6f6b63;

  --maxw:          1240px;
  --radius:        14px;
  --radius-lg:     22px;

  --ff-serif: "Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --ff-sans:  -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;

  --shadow:   0 24px 60px -20px rgba(0,0,0,.65);
  --ease:     cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  font-family:var(--ff-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
ul { list-style:none; }
button { font-family:inherit; cursor:pointer; border:none; background:none; color:inherit; }

/* ---------- Layout helpers ---------- */
.container { width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:24px; }
.section { padding:clamp(64px,9vw,128px) 0; position:relative; }
.section--tight { padding:clamp(48px,6vw,88px) 0; }

.eyebrow {
  display:inline-flex; align-items:center; gap:10px;
  font-size:13px; letter-spacing:.28em; text-transform:uppercase;
  color:var(--gold); font-weight:600; margin-bottom:18px;
}
.eyebrow::before { content:""; width:32px; height:1px; background:var(--gold); opacity:.7; }

h1,h2,h3 { font-family:var(--ff-serif); font-weight:600; line-height:1.18; letter-spacing:.01em; }
.h-xl { font-size:clamp(2.4rem,6vw,4.6rem); }
.h-lg { font-size:clamp(2rem,4.4vw,3.2rem); }
.h-md { font-size:clamp(1.5rem,2.6vw,2rem); }
.lead { font-size:clamp(1.05rem,1.5vw,1.25rem); color:var(--text-muted); max-width:62ch; }
.text-gold { color:var(--gold); }
.text-muted { color:var(--text-muted); }

/* ---------- Buttons ---------- */
.btn {
  display:flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 30px; border-radius:999px; font-weight:600;
  font-size:15px; letter-spacing:.02em; transition:all .35s var(--ease);
  border:1px solid transparent; white-space:nowrap;
}
.btn svg { width:18px; height:18px; flex-shrink:0; }
.btn--gold { background:linear-gradient(135deg,var(--gold-bright),var(--gold) 55%,var(--gold-deep)); color:#1a1408; box-shadow:0 12px 30px -10px rgba(201,169,106,.55); }
.btn--gold:hover { transform:translateY(-3px); box-shadow:0 18px 40px -10px rgba(201,169,106,.7); }
.btn--ghost { border-color:var(--line); color:var(--text); }
.btn--ghost:hover { border-color:var(--gold); color:var(--gold-bright); background:rgba(201,169,106,.06); }

.cta-band .btn,
.mobile-menu .btn { max-width:340px; margin-inline:auto; }

/* ---------- Header ---------- */
.site-header {
  position:fixed; inset:0 0 auto 0; z-index:60;
  transition:background .4s var(--ease), border-color .4s, backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled {
  background:rgba(11,11,13,.82); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav { display:flex; align-items:center; justify-content:space-between; height:74px; }
.brand { display:flex; align-items:center; gap:12px; font-family:var(--ff-serif); font-size:1.3rem; letter-spacing:.06em; }
.brand svg { width:34px; height:34px; color:var(--gold); }
.brand small { display:block; font-family:var(--ff-sans); font-size:10px; letter-spacing:.4em; color:var(--text-dim); text-transform:uppercase; }
.brand-tagline { display:block; font-family:var(--ff-sans); font-size:11px; font-style:normal; letter-spacing:.16em; color:var(--gold); margin-top:1px; white-space:nowrap; }

.nav-links { display:flex; align-items:center; gap:34px; }
.nav-links a { font-size:15px; color:var(--text-muted); position:relative; transition:color .3s; }
.nav-links a::after { content:""; position:absolute; left:0; bottom:-6px; width:0; height:1.5px; background:var(--gold); transition:width .3s var(--ease); }
.nav-links a:hover, .nav-links a.active { color:var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }

.nav-actions { display:flex; align-items:center; gap:14px; }
.icon-btn { width:42px; height:42px; display:grid; place-items:center; border-radius:50%; border:1px solid var(--line-soft); transition:.3s; }
.icon-btn:hover { border-color:var(--gold); color:var(--gold); }
.icon-btn svg { width:20px; height:20px; }

.nav-toggle { display:none; }

/* ---------- Hero ---------- */
.hero { position:relative; min-height:100svh; display:flex; align-items:center; overflow:hidden; }
.hero__bg { position:absolute; inset:0; z-index:0; }
.hero__bg img { width:100%; height:100%; object-fit:cover; }
.hero__bg::after { content:""; position:absolute; inset:0; background:linear-gradient(90deg,rgba(8,8,10,.94) 0%,rgba(8,8,10,.7) 45%,rgba(8,8,10,.35) 100%), linear-gradient(0deg,rgba(8,8,10,.9),transparent 50%); }
.hero__inner { position:relative; z-index:2; padding-top:90px; }
.hero h1 { margin-bottom:22px; }
.hero .lead { margin-bottom:36px; }
.hero__cta { display:flex; flex-wrap:wrap; gap:16px; }
.hero__stats { display:flex; gap:48px; margin-top:60px; flex-wrap:wrap; }
.stat__num { font-family:var(--ff-serif); font-size:2.4rem; color:var(--gold-bright); line-height:1; }
.stat__label { font-size:13px; letter-spacing:.12em; color:var(--text-dim); margin-top:8px; text-transform:uppercase; }

/* ---------- Marquee / trust strip ---------- */
.strip { border-block:1px solid var(--line-soft); background:var(--bg-soft); }
.strip__row { display:flex; flex-wrap:wrap; gap:14px 48px; justify-content:center; align-items:center; padding:22px 0; color:var(--text-dim); font-size:14px; letter-spacing:.08em; }
.strip__row span { display:inline-flex; align-items:center; gap:10px; }
.strip__row svg { width:18px; height:18px; color:var(--gold); }

/* ---------- Section heading ---------- */
.sec-head { max-width:760px; margin-bottom:56px; }
.sec-head.center { margin-inline:auto; text-align:center; }
.sec-head .eyebrow { justify-content:center; }

/* ---------- Feature grid ---------- */
.feature-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.feature-card {
  background:linear-gradient(180deg,var(--surface),var(--bg-soft));
  border:1px solid var(--line-soft); border-radius:var(--radius-lg);
  padding:38px 32px; transition:.4s var(--ease); position:relative; overflow:hidden;
}
.feature-card::before { content:""; position:absolute; inset:0; background:radial-gradient(400px 200px at var(--mx,50%) var(--my,0%),rgba(201,169,106,.1),transparent 60%); opacity:0; transition:opacity .4s; }
.feature-card:hover { transform:translateY(-6px); border-color:var(--line); box-shadow:var(--shadow); }
.feature-card:hover::before { opacity:1; }
.feature-card .ico { width:54px; height:54px; border-radius:14px; display:grid; place-items:center; background:rgba(201,169,106,.12); color:var(--gold); margin-bottom:22px; }
.feature-card .ico svg { width:28px; height:28px; }
.feature-card h3 { font-size:1.3rem; margin-bottom:12px; }
.feature-card p { color:var(--text-muted); font-size:.96rem; }

/* ---------- Product cards ---------- */
.product-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.product-card {
  background:var(--surface); border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); overflow:hidden; transition:.45s var(--ease);
}
.product-card:hover { transform:translateY(-8px); border-color:var(--line); box-shadow:var(--shadow); }
.product-card__media { aspect-ratio:4/3; overflow:hidden; position:relative; }
.product-card__media img { width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.product-card:hover .product-card__media img { transform:scale(1.07); }
.product-card__tag { position:absolute; top:16px; left:16px; background:rgba(11,11,13,.7); backdrop-filter:blur(6px); color:var(--gold-bright); font-size:12px; letter-spacing:.1em; padding:6px 12px; border-radius:999px; border:1px solid var(--line); }
.product-card__body { padding:26px 24px 30px; }
.product-card__body h3 { font-size:1.25rem; margin-bottom:8px; }
.product-card__body p { color:var(--text-muted); font-size:.94rem; margin-bottom:18px; }
.product-card__foot { display:flex; align-items:center; justify-content:space-between; }
.price { font-family:var(--ff-serif); font-size:1.3rem; color:var(--gold-bright); }
.price small { font-size:.8rem; color:var(--text-dim); }

/* ---------- Stores ---------- */
.store-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.store-card {
  display:flex; align-items:center; gap:18px;
  background:linear-gradient(120deg,var(--surface),var(--bg-soft));
  border:1px solid var(--line-soft); border-radius:var(--radius);
  padding:24px 26px; transition:.4s var(--ease);
}
.store-card:hover { border-color:var(--gold); transform:translateY(-4px); box-shadow:var(--shadow); }
.store-card__badge { flex:none; width:56px; height:56px; border-radius:14px; display:grid; place-items:center; overflow:hidden; }
.store-card__badge img { width:100%; height:100%; object-fit:cover; border-radius:14px; }
.store-card__info h3 { font-size:1.1rem; margin-bottom:4px; }
.store-card__info p { font-size:.85rem; color:var(--text-dim); }
.store-card__go { margin-left:auto; color:var(--gold); }
.store-card__go svg { width:22px; height:22px; }

/* ---------- Story / about split ---------- */
.split { display:grid; grid-template-columns:1.05fr .95fr; gap:64px; align-items:center; }
.split__media { position:relative; border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow); }
.split__media img { width:100%; aspect-ratio:4/5; object-fit:cover; }
.split__media img.ar-32 { aspect-ratio:3/2; }
.split ul.check-list { margin-top:26px; display:grid; gap:14px; }
.check-list li { display:flex; gap:12px; align-items:flex-start; color:var(--text-muted); }
.check-list svg { width:22px; height:22px; color:var(--gold); flex:none; margin-top:2px; }

/* ---------- Testimonials ---------- */
.quote-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.quote-card { background:var(--surface); border:1px solid var(--line-soft); border-radius:var(--radius); padding:34px 30px; }
.quote-card .ico { color:var(--gold); opacity:.5; }
.quote-card .ico svg { width:30px; height:30px; }
.quote-card p { font-family:var(--ff-serif); font-size:1.08rem; line-height:1.6; margin:16px 0 20px; }
.quote-card .who { display:flex; align-items:center; gap:12px; }
.quote-card .who .av { width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg,var(--gold),var(--gold-deep)); display:grid; place-items:center; color:#0b0b0d; font-weight:700; font-family:var(--ff-serif); }
.quote-card .who span { font-size:.9rem; color:var(--text-muted); }
.stars { display:inline-flex; gap:3px; color:var(--gold); margin-bottom:10px; }
.stars svg { width:16px; height:16px; }

/* ---------- CTA band ---------- */
.cta-band { background:radial-gradient(800px 400px at 50% -20%,rgba(201,169,106,.18),transparent), var(--surface); border:1px solid var(--line); border-radius:var(--radius-lg); padding:clamp(40px,6vw,72px); text-align:center; }
.cta-band h2 { margin-bottom:16px; }
.cta-band .lead { margin:0 auto 32px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size:13px; color:var(--text-dim); padding-top:96px; }
.breadcrumb a:hover { color:var(--gold); }
.breadcrumb span { margin:0 8px; }

/* ---------- Page hero ---------- */
.page-hero { padding:120px 0 40px; }
.page-hero .lead { margin-top:18px; }

/* ---------- Contact ---------- */
.contact-grid { display:grid; grid-template-columns:.9fr 1.1fr; gap:48px; }
.contact-info { display:grid; gap:22px; }
.contact-item { display:flex; gap:16px; align-items:flex-start; }
.contact-item .ico { width:46px; height:46px; border-radius:12px; background:rgba(201,169,106,.12); color:var(--gold); display:grid; place-items:center; flex:none; }
.contact-item .ico svg { width:22px; height:22px; }
.contact-item h3 { font-size:1.05rem; margin-bottom:4px; }
.contact-item p { color:var(--text-muted); font-size:.95rem; }
.form { background:var(--surface); border:1px solid var(--line-soft); border-radius:var(--radius); padding:34px; }
.field { margin-bottom:18px; }
.field label { display:block; font-size:13px; letter-spacing:.06em; color:var(--text-muted); margin-bottom:8px; }
.field input, .field textarea, .field select {
  width:100%; background:var(--bg-soft); border:1px solid var(--line-soft);
  border-radius:10px; padding:13px 15px; color:var(--text); font-size:15px; font-family:inherit; transition:.3s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline:none; border-color:var(--gold); background:var(--surface); }
.field textarea { min-height:130px; resize:vertical; }
.form .btn { width:100%; margin-top:6px; }

/* ---------- Footer ---------- */
.site-footer { border-top:1px solid var(--line-soft); background:var(--bg-soft); padding:64px 0 30px; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; }
.footer-brand p { color:var(--text-muted); font-size:.92rem; margin-top:16px; max-width:34ch; }
.footer-col h4 { font-family:var(--ff-sans); font-size:13px; letter-spacing:.18em; text-transform:uppercase; color:var(--gold); margin-bottom:18px; }
.footer-col a { display:block; color:var(--text-muted); font-size:.94rem; padding:6px 0; transition:.3s; }
.footer-col a:hover { color:var(--gold-bright); padding-left:6px; }
.footer-bottom { margin-top:48px; padding-top:24px; border-top:1px solid var(--line-soft); display:flex; flex-wrap:wrap; gap:14px; justify-content:space-between; color:var(--text-dim); font-size:13px; }
.footer-social { display:flex; gap:12px; }
.footer-social a { width:40px; height:40px; border-radius:50%; border:1px solid var(--line-soft); display:grid; place-items:center; color:var(--text-muted); transition:.3s; }
.footer-social a svg { width:20px; height:20px; }
.footer-social a:hover { border-color:var(--gold); color:var(--gold); }

/* ---------- Reveal animation ---------- */
.reveal { opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity:1; transform:none; }
.reveal[data-d="1"]{ transition-delay:.1s } .reveal[data-d="2"]{ transition-delay:.2s } .reveal[data-d="3"]{ transition-delay:.3s }

/* ---------- Mobile nav ---------- */
.mobile-menu {
  position:fixed; inset:0; z-index:55; background:rgba(11,11,13,.97); backdrop-filter:blur(10px);
  display:flex; flex-direction:column; padding:100px 32px 40px; gap:8px;
  transform:translateX(100%); transition:transform .45s var(--ease);
}
.mobile-menu.open { transform:none; }
.mobile-menu a { font-family:var(--ff-serif); font-size:1.6rem; padding:14px 0; border-bottom:1px solid var(--line-soft); color:var(--text); }
.mobile-menu a.active { color:var(--gold); }
.mobile-menu .btn { margin-top:24px; }

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .feature-grid, .product-grid, .quote-grid, .store-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .split, .contact-grid { grid-template-columns:1fr; gap:40px; }
  .split__media img,
  .split__media img.ar-32 { aspect-ratio:3/2; }
}
@media (max-width:680px){
  .nav-links, .nav-actions .btn { display:none; }
  .nav-toggle { display:grid; }
  .feature-grid, .product-grid, .quote-grid, .store-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .hero__stats { gap:28px; }
  .stat__num { font-size:1.9rem; }
  .container { padding-inline:20px; }
}
@media (prefers-reduced-motion:reduce){
  *{ scroll-behavior:auto; transition:none!important; }
  .reveal{ opacity:1; transform:none; }
}