/* ============================================================
   云祉堂 · 东方香事  |  视觉体系
   基调：墨色为底、金铜为饰、纸质为面；直角、细线、疏排。
   ============================================================ */

:root {
  --ink:        #0d0c0a;
  --ink-2:      #14120e;
  --ink-3:      #1c1913;
  --ink-4:      #262119;

  --gold:       #c9a75f;
  --gold-lit:   #e0c68d;
  --gold-deep:  #8f7440;
  --hair:       rgba(201, 167, 95, .22);
  --hair-soft:  rgba(201, 167, 95, .12);

  --paper:      #f5f2ea;
  --paper-2:    #ebe6da;
  --paper-3:    #ded7c7;

  --txt-1:      #2b2721;
  --txt-2:      #5c5548;
  --txt-3:      #8a8171;

  --on-dark-1:  #ece7dc;
  --on-dark-2:  #a49b8a;
  --on-dark-3:  #6f6759;

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

  --nav-h: 76px;
  --ease:  cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--on-dark-1);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: rgba(201, 167, 95, .3); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: #100e0b; }
::-webkit-scrollbar-thumb { background: #3a3226; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-deep); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: 0; z-index: 70; background: rgba(8,7,6,.97);
  transform: translateX(100%); transition: transform .45s var(--ease);
  backdrop-filter: blur(6px);
}
.drawer.on { transform: none; }
.drawer-in { padding: 110px 34px 34px; display: flex; flex-direction: column; gap: 4px; }
.drawer-in a {
  font-size: 19px; letter-spacing: .24em; padding: 17px 0;
  border-bottom: 1px solid var(--hair-soft); color: var(--on-dark-1);
}
.drawer-in a.on, .drawer-in a:hover { color: var(--gold-lit); }
.drawer-admin { font-family: var(--sans); font-size: 12px !important; letter-spacing: .2em; color: var(--on-dark-3) !important; border-bottom: 0 !important; margin-top: 20px; }

/* ───────────────── 通用排版 ───────────────── */

.wrap { width: min(1240px, calc(100% - 64px)); margin: 0 auto; }
.wrap-slim { width: min(880px, calc(100% - 64px)); margin: 0 auto; }

.eyebrow {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .46em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 18px;
  font-weight: 500;
}

.h1, .h2, .h3 { font-weight: 400; margin: 0; letter-spacing: .1em; line-height: 1.5; }
.h1 { font-size: clamp(30px, 4.4vw, 56px); }
.h2 { font-size: clamp(24px, 2.7vw, 38px); }
.h3 { font-size: clamp(18px, 1.8vw, 23px); }

.sub {
  font-size: 14px; color: var(--on-dark-2);
  letter-spacing: .1em; line-height: 2.15;
}
.lead { font-size: 15.5px; line-height: 2.3; letter-spacing: .07em; }

.gold { color: var(--gold-lit); }
.dim  { color: var(--on-dark-3); }

.rule { height: 1px; background: var(--hair); border: 0; margin: 0; }
.rule-short { width: 46px; height: 1px; background: var(--gold); border: 0; margin: 0; }

section.block { padding: 108px 0; position: relative; }
section.block.tight { padding: 76px 0; }

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 60px; }
.sec-head .left { max-width: 640px; }

/* 纸质区 */
.paper-zone { background: var(--paper); color: var(--txt-1); }
.paper-zone .eyebrow { color: var(--gold-deep); }
.paper-zone .sub, .paper-zone .lead { color: var(--txt-2); }
.paper-zone .rule { background: rgba(43, 39, 33, .14); }
.paper-zone .dim { color: var(--txt-3); }

/* ───────────────── 顶部公告 ───────────────── */

.announce {
  background: #080706;
  border-bottom: 1px solid var(--hair-soft);
  text-align: center;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--on-dark-2);
  padding: 9px 20px;
  position: relative; z-index: 60;
}
.announce b { color: var(--gold); font-weight: 500; }

/* ───────────────── 导航 ───────────────── */

.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: rgba(13, 12, 10, .82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--hair-soft);
  transition: background .4s var(--ease);
}
.nav.solid { background: rgba(11, 10, 8, .96); }
.nav-in { display: flex; align-items: center; height: 100%; gap: 34px; }

.brand { display: flex; align-items: center; gap: 13px; flex: none; }
/* 徽记：由 scripts/gen-logo.py 从 design/logo-src.jpg 参数化生成的金色透明 PNG */
.brand-mark { height: 46px; width: auto; flex: none; }
/* 页脚用的上下锁定版（徽记 + 堂号） */
.brand.lockup { flex-direction: column; align-items: flex-start; gap: 14px; }
.brand.lockup img { height: 132px; width: auto; }
.brand-txt { line-height: 1.25; }
.brand-txt strong { font-size: 17px; font-weight: 500; letter-spacing: .26em; display: block; }
.brand-txt span {
  font-family: var(--sans); font-size: 8.5px; letter-spacing: .34em;
  color: var(--on-dark-3); text-transform: uppercase;
}

.nav-links { display: flex; gap: 30px; margin-left: auto; }
.nav-links a {
  font-size: 13.5px; letter-spacing: .18em; color: var(--on-dark-2);
  padding: 6px 0; position: relative; transition: color .3s var(--ease);
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--gold); transition: width .38s var(--ease);
}
.nav-links a:hover, .nav-links a.on { color: var(--gold-lit); }
.nav-links a:hover::after, .nav-links a.on::after { width: 100%; }

.nav-act { display: flex; align-items: center; gap: 16px; }
.cart-btn {
  position: relative; display: flex; align-items: center; gap: 9px;
  border: 1px solid var(--hair); padding: 9px 15px;
  font-size: 12.5px; letter-spacing: .16em; color: var(--on-dark-1);
  transition: border-color .3s, color .3s;
}
.cart-btn:hover { border-color: var(--gold); color: var(--gold-lit); }
.cart-count {
  font-family: var(--sans); font-size: 10px; min-width: 17px; height: 17px;
  display: grid; place-items: center; background: var(--gold); color: #191510;
  border-radius: 50%; padding: 0 4px; font-weight: 600;
}

.burger { display: none; width: 30px; height: 22px; position: relative; }
.burger i {
  position: absolute; left: 0; height: 1px; background: var(--on-dark-1);
  width: 100%; transition: .3s var(--ease);
}
.burger i:nth-child(1) { top: 6px; } .burger i:nth-child(2) { top: 15px; }

/* ───────────────── 按钮 ───────────────── */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 11px;
  padding: 14px 34px; font-size: 13.5px; letter-spacing: .24em;
  border: 1px solid var(--gold); color: var(--gold-lit);
  background: transparent; position: relative; overflow: hidden;
  transition: color .45s var(--ease), border-color .45s var(--ease);
}
.btn::before {
  content: ''; position: absolute; inset: 0; background: var(--gold);
  transform: translateY(101%); transition: transform .5s var(--ease); z-index: 0;
}
.btn > * { position: relative; z-index: 1; }
.btn:hover { color: #14110c; }
.btn:hover::before { transform: translateY(0); }
.btn.solid { background: var(--gold); color: #14110c; }
.btn.solid::before { background: var(--gold-lit); }
.btn.ghost { border-color: var(--hair); color: var(--on-dark-2); }
.btn.ghost:hover { color: var(--gold-lit); border-color: var(--gold); }
.btn.ghost::before { display: none; }
.btn.on-paper { border-color: var(--gold-deep); color: var(--gold-deep); }
.btn.on-paper:hover { color: var(--paper); }
.btn.on-paper::before { background: var(--gold-deep); }
.btn.sm { padding: 10px 22px; font-size: 12px; letter-spacing: .2em; }
.btn[disabled] { opacity: .4; pointer-events: none; }
.btn-block { width: 100%; }

.link-more {
  font-size: 12.5px; letter-spacing: .22em; color: var(--gold);
  display: inline-flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--hair); padding-bottom: 3px;
  transition: border-color .35s, gap .35s;
}
.link-more:hover { border-color: var(--gold); gap: 16px; }

/* ───────────────── 首页主视觉 ───────────────── */

.hero {
  position: relative; min-height: 92vh; display: flex; align-items: center;
  overflow: hidden; border-bottom: 1px solid var(--hair-soft);
  background: var(--ink);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: .5; transform: scale(1.06);
  animation: heroDrift 26s var(--ease) forwards;
}
@keyframes heroDrift { to { transform: scale(1); opacity: .56; } }
.hero-veil {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 18% 42%, rgba(13,12,10,.28), rgba(13,12,10,.9) 72%),
    linear-gradient(to top, var(--ink) 2%, rgba(13,12,10,.34) 46%, rgba(13,12,10,.62));
}
.hero-in { position: relative; z-index: 2; padding: 130px 0 110px; width: 100%; }
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; }
.hero h1 {
  font-size: clamp(38px, 6vw, 82px); line-height: 1.28; letter-spacing: .14em;
  margin: 0 0 30px; font-weight: 400;
}
.hero h1 em { font-style: normal; color: var(--gold-lit); }
.hero-desc { max-width: 560px; color: var(--on-dark-2); font-size: 15px; line-height: 2.4; letter-spacing: .09em; }
.hero-cta { display: flex; gap: 16px; margin-top: 46px; flex-wrap: wrap; }

.hero-side { writing-mode: vertical-rl; text-orientation: upright; display: flex; gap: 26px; align-items: flex-start; }
.hero-side span {
  font-size: 13px; letter-spacing: .5em; color: var(--on-dark-3);
}
.hero-side .vline { width: 1px; height: 120px; background: linear-gradient(to bottom, transparent, var(--gold), transparent); writing-mode: horizontal-tb; }

.hero-meta {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  border-top: 1px solid var(--hair-soft); background: rgba(8,7,6,.5);
  backdrop-filter: blur(8px);
}
.hero-meta-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-meta-in > div { padding: 24px 0; border-right: 1px solid var(--hair-soft); padding-left: 26px; }
.hero-meta-in > div:last-child { border-right: 0; }
.hero-meta-in b { display: block; font-size: 14.5px; letter-spacing: .2em; color: var(--gold-lit); font-weight: 400; }
.hero-meta-in span { font-family: var(--sans); font-size: 10.5px; letter-spacing: .24em; color: var(--on-dark-3); text-transform: uppercase; }

/* ───────────────── 品类卡 ───────────────── */

.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hair-soft); border: 1px solid var(--hair-soft); }
.cat-card {
  background: var(--ink-2); position: relative; overflow: hidden;
  display: block; min-height: 430px;
}
.cat-card .thumb {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: .42; transition: transform 1.1s var(--ease), opacity .6s var(--ease);
}
.cat-card:hover .thumb { transform: scale(1.06); opacity: .6; }
.cat-card .veil {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,9,7,.96) 8%, rgba(10,9,7,.5) 52%, rgba(10,9,7,.24));
}
.cat-card .body {
  position: relative; z-index: 2; height: 100%; min-height: 430px;
  padding: 34px 30px; display: flex; flex-direction: column; justify-content: flex-end;
}
.cat-card .en {
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .38em;
  color: var(--gold); text-transform: uppercase; margin-bottom: 12px;
}
.cat-card .zh { font-size: 27px; letter-spacing: .2em; }
.cat-card .tag { font-size: 12.5px; letter-spacing: .16em; color: var(--on-dark-2); margin-top: 9px; }
.cat-card .foot {
  margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--hair-soft);
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--sans); font-size: 11px; letter-spacing: .16em; color: var(--on-dark-3);
}
.cat-card .foot b { font-family: var(--serif); font-size: 15px; color: var(--gold-lit); font-weight: 400; letter-spacing: .06em; }
.cat-card .go {
  position: absolute; top: 28px; right: 28px; z-index: 3;
  width: 34px; height: 34px; border: 1px solid var(--hair);
  display: grid; place-items: center; color: var(--gold);
  opacity: 0; transform: translateY(-6px); transition: .5s var(--ease);
}
.cat-card:hover .go { opacity: 1; transform: translateY(0); }

/* ───────────────── 商品卡 ───────────────── */

.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 28px; }
.prod-grid.col3 { grid-template-columns: repeat(3, 1fr); }

/* 列数修饰类 —— 替代内联 grid-template-columns，
   保证不同断点下的列数由媒体查询统一接管（内联样式会压过媒体查询） */
.prod-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.prod-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.prod-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.steps.cols-3 { grid-template-columns: repeat(3, 1fr); }
.stats.cols-4 { grid-template-columns: repeat(4, 1fr); }
/* 1px 细线分隔的平铺网格（用背景色透出分割线） */
.prod-grid.tiles,
.stats.tiles { gap: 1px; background: var(--hair-soft); border: 1px solid var(--hair-soft); }
/* 纸质区改用深色细线，避免金色细线在米色底上不可见 */
.paper-zone .prod-grid.tiles,
.paper-zone .stats.tiles { background: rgba(43, 39, 33, .16); border-color: rgba(43, 39, 33, .16); }

.pcard { position: relative; display: flex; flex-direction: column; }
.pcard .ph {
  position: relative; overflow: hidden; aspect-ratio: 4 / 5;
  background: var(--ink-3); border: 1px solid var(--hair-soft);
}
.pcard .ph img, .pcard .ph .fill {
  width: 100%; height: 100%; object-fit: cover; background-size: cover;
  background-position: center; filter: saturate(.86) brightness(.86);
  transition: transform 1.2s var(--ease), filter .7s var(--ease);
}
.pcard:hover .ph img, .pcard:hover .ph .fill { transform: scale(1.055); filter: saturate(.98) brightness(.95); }
.pcard .ph::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,9,7,.62), transparent 58%);
}
.pcard .badge {
  position: absolute; top: 14px; left: 14px; z-index: 3;
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .24em;
  padding: 5px 10px; background: rgba(12,11,9,.8);
  border: 1px solid var(--gold); color: var(--gold-lit);
}
.pcard .sku-tag {
  position: absolute; bottom: 12px; left: 14px; z-index: 3;
  font-family: var(--sans); font-size: 9.5px; letter-spacing: .18em; color: var(--on-dark-3);
}
.pcard .add {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 4;
  padding: 13px; text-align: center;
  font-family: var(--sans); font-size: 11.5px; letter-spacing: .26em;
  background: var(--gold); color: #14110c;
  transform: translateY(100%); transition: transform .45s var(--ease);
}
.pcard:hover .add { transform: translateY(0); }
.pcard .info { padding: 20px 2px 0; }
.pcard .info h3 { font-size: 16.5px; letter-spacing: .12em; font-weight: 400; margin: 0 0 8px; }
.pcard .info .spec { font-family: var(--sans); font-size: 11.5px; color: var(--on-dark-3); letter-spacing: .08em; }
.pcard .info .price { margin-top: 13px; display: flex; align-items: baseline; gap: 10px; }
.pcard .info .price b { font-size: 20px; color: var(--gold-lit); font-weight: 400; letter-spacing: .04em; }
.pcard .info .price s { font-size: 12px; color: var(--on-dark-3); }
.pcard .info .desc { font-size: 12.5px; color: var(--on-dark-2); margin-top: 9px; line-height: 1.9; letter-spacing: .05em; }

/* 纸质区内的商品卡 */
.paper-zone .pcard .ph { background: var(--paper-3); border-color: rgba(43,39,33,.14); }
.paper-zone .pcard .info h3 { color: var(--txt-1); }
.paper-zone .pcard .info .price b { color: var(--gold-deep); }
.paper-zone .pcard .info .spec, .paper-zone .pcard .info .desc { color: var(--txt-3); }

/* ───────────────── 定制四步 ───────────────── */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hair-soft); }
.step { background: var(--ink-2); padding: 44px 32px; position: relative; }
.step .no {
  font-family: var(--sans); font-size: 10px; letter-spacing: .3em; color: var(--gold);
  margin-bottom: 26px;
}
.step h4 { font-size: 17px; letter-spacing: .18em; margin: 0 0 14px; font-weight: 400; }
.step p { font-size: 12.5px; color: var(--on-dark-2); line-height: 2.1; margin: 0; letter-spacing: .05em; }

/* ───────────────── 匠造 band ───────────────── */

.band { position: relative; overflow: hidden; background: var(--ink-2); border-top: 1px solid var(--hair-soft); border-bottom: 1px solid var(--hair-soft); }
.band-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .22; }
.band-veil { position: absolute; inset: 0; background: linear-gradient(90deg, var(--ink) 6%, rgba(13,12,10,.5) 60%, var(--ink)); }
.band-in { position: relative; z-index: 2; padding: 110px 0; }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 80px; align-items: center; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hair-soft); border: 1px solid var(--hair-soft); }
.stat { background: rgba(18,16,12,.8); padding: 30px 26px; }

/* 栅格子项允许收缩到内容宽度以下，避免长英文/邮箱把栅格撑破 */
.stat, .step, .panel, .pcard, .cat-card, .field, .note { min-width: 0; }
.stat span, .stat b, .foot li, .foot-bottom span { overflow-wrap: anywhere; }
.stat b { display: block; font-size: 33px; color: var(--gold-lit); font-weight: 400; letter-spacing: .04em; line-height: 1.2; }
.stat b i { font-style: normal; font-size: 15px; color: var(--gold); margin-left: 4px; }
.stat span { font-family: var(--sans); font-size: 10.5px; letter-spacing: .24em; color: var(--on-dark-3); }

/* ───────────────── 底部 ───────────────── */

.foot { background: #080706; border-top: 1px solid var(--hair-soft); padding: 78px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 50px; }
.foot h5 {
  font-family: var(--sans); font-size: 10.5px; letter-spacing: .3em;
  color: var(--gold); text-transform: uppercase; margin: 0 0 22px; font-weight: 500;
}
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 12px; font-size: 13px; color: var(--on-dark-2); letter-spacing: .07em; }
.foot a:hover { color: var(--gold-lit); }
.foot-brand p { font-size: 13px; color: var(--on-dark-3); line-height: 2.1; max-width: 340px; letter-spacing: .05em; }
.foot-bottom {
  margin-top: 58px; padding-top: 24px; border-top: 1px solid var(--hair-soft);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-family: var(--sans); font-size: 11px; letter-spacing: .14em; color: var(--on-dark-3);
}

/* ───────────────── 页头（内页） ───────────────── */

.page-head {
  position: relative; padding: 92px 0 66px; border-bottom: 1px solid var(--hair-soft);
  background:
    radial-gradient(90% 130% at 84% 0%, rgba(201,167,95,.09), transparent 62%),
    var(--ink-2);
  overflow: hidden;
}
.page-head .cn { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: .24em; margin: 0 0 16px; font-weight: 400; }
.page-head .sub { max-width: 640px; }
.crumb {
  font-family: var(--sans); font-size: 11px; letter-spacing: .2em; color: var(--on-dark-3);
  margin-bottom: 26px;
}
.crumb a:hover { color: var(--gold); }

/* ───────────────── 筛选栏 ───────────────── */

.filters {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 22px 0; border-bottom: 1px solid var(--hair-soft); margin-bottom: 46px;
}
.chip {
  font-family: var(--sans); font-size: 12px; letter-spacing: .16em;
  padding: 8px 18px; border: 1px solid var(--hair); color: var(--on-dark-2);
  transition: .3s var(--ease); background: transparent;
}
.chip:hover { color: var(--gold-lit); border-color: var(--gold); }
.chip.on { background: var(--gold); border-color: var(--gold); color: #14110c; }
.search-box { margin-left: auto; display: flex; align-items: center; border-bottom: 1px solid var(--hair); }
.search-box input {
  background: transparent; border: 0; outline: 0; color: var(--on-dark-1);
  padding: 9px 4px; width: 190px; font-size: 13px; letter-spacing: .08em;
}
.search-box input::placeholder { color: var(--on-dark-3); }
.search-box button { color: var(--gold); font-size: 13px; padding: 0 6px; }

/* ───────────────── 商品详情 ───────────────── */

.pd { display: grid; grid-template-columns: 1.06fr 1fr; gap: 72px; align-items: start; padding: 66px 0 96px; }
.pd-gallery { position: relative; }
.pd-main {
  aspect-ratio: 4 / 5; border: 1px solid var(--hair-soft); overflow: hidden; background: var(--ink-3);
}
.pd-main .fill { width: 100%; height: 100%; background-size: cover; background-position: center; filter: saturate(.9) brightness(.9); }
.pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 1px; background: var(--hair-soft); }
.pd-thumbs div { aspect-ratio: 1; background-size: cover; background-position: center; filter: brightness(.62); transition: filter .4s; cursor: pointer; }
.pd-thumbs div:hover, .pd-thumbs div.on { filter: brightness(1); }

.pd-info .sku { font-family: var(--sans); font-size: 10.5px; letter-spacing: .3em; color: var(--gold); margin-bottom: 20px; }
.pd-info h1 { font-size: clamp(25px, 2.9vw, 38px); letter-spacing: .14em; margin: 0 0 18px; font-weight: 400; line-height: 1.45; }
.pd-info .sdesc { font-size: 14px; color: var(--on-dark-2); line-height: 2.2; letter-spacing: .07em; margin-bottom: 30px; }
.pd-price { display: flex; align-items: baseline; gap: 14px; padding: 24px 0; border-top: 1px solid var(--hair-soft); border-bottom: 1px solid var(--hair-soft); }
.pd-price b { font-size: 36px; color: var(--gold-lit); font-weight: 400; letter-spacing: .02em; }
.pd-price b small { font-size: 17px; margin-right: 3px; }
.pd-price s { font-size: 13.5px; color: var(--on-dark-3); }
.pd-price .save { font-family: var(--sans); font-size: 11px; letter-spacing: .18em; color: var(--gold); border: 1px solid var(--hair); padding: 4px 9px; }

.notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hair-soft); margin: 26px 0; }
.note { background: var(--ink-2); padding: 18px 20px; }
.note span { font-family: var(--sans); font-size: 10px; letter-spacing: .26em; color: var(--on-dark-3); display: block; margin-bottom: 7px; }
.note b { font-size: 13.5px; font-weight: 400; color: var(--gold-lit); letter-spacing: .1em; }

.pd-attrs { border-top: 1px solid var(--hair-soft); margin-top: 6px; }
.pd-attrs .row { display: grid; grid-template-columns: 118px 1fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--hair-soft); font-size: 13px; }
.pd-attrs .row span { font-family: var(--sans); font-size: 11.5px; letter-spacing: .16em; color: var(--on-dark-3); }
.pd-attrs .row b { font-weight: 400; color: var(--on-dark-1); letter-spacing: .06em; }

.qty-row { display: flex; align-items: center; gap: 18px; margin: 30px 0 22px; }
.qty { display: flex; align-items: center; border: 1px solid var(--hair); }
.qty button { width: 40px; height: 44px; color: var(--on-dark-2); font-size: 16px; }
.qty button:hover { color: var(--gold); }
.qty input {
  width: 58px; height: 44px; text-align: center; background: transparent; border: 0;
  border-left: 1px solid var(--hair); border-right: 1px solid var(--hair);
  color: var(--on-dark-1); outline: 0;
}
.qty-row .stock { font-family: var(--sans); font-size: 11.5px; letter-spacing: .14em; color: var(--on-dark-3); }

.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.svc-row {
  display: flex; gap: 26px; flex-wrap: wrap; margin-top: 30px; padding-top: 22px;
  border-top: 1px solid var(--hair-soft);
  font-family: var(--sans); font-size: 11.5px; letter-spacing: .12em; color: var(--on-dark-3);
}
.svc-row span::before { content: '·'; color: var(--gold); margin-right: 7px; }

/* 标签页 */
.tabs { border-top: 1px solid var(--hair-soft); margin-top: 20px; }
.tab-nav { display: flex; gap: 36px; border-bottom: 1px solid var(--hair-soft); }
.tab-nav button {
  padding: 20px 0; font-size: 14px; letter-spacing: .18em; color: var(--on-dark-3);
  position: relative; transition: color .3s;
}
.tab-nav button.on { color: var(--gold-lit); }
.tab-nav button.on::after { content: ''; position: absolute; bottom: -1px; left: 0; right: 0; height: 1px; background: var(--gold); }
.tab-panel { padding: 34px 0 0; font-size: 14px; line-height: 2.4; color: var(--on-dark-2); letter-spacing: .06em; display: none; }
.tab-panel.on { display: block; }

/* ───────────────── 表单 ───────────────── */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 26px; }
.field { display: flex; flex-direction: column; gap: 9px; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: var(--sans); font-size: 11.5px; letter-spacing: .18em; color: var(--on-dark-3); }
.field label i { font-style: normal; color: var(--gold); margin-left: 4px; }
.field input, .field select, .field textarea {
  background: rgba(255,255,255,.02); border: 1px solid var(--hair);
  color: var(--on-dark-1); padding: 13px 15px; outline: 0;
  font-size: 13.5px; letter-spacing: .06em; transition: border-color .3s, background .3s;
}
.field textarea { min-height: 118px; resize: vertical; line-height: 1.9; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--gold); background: rgba(201,167,95,.05);
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%), linear-gradient(135deg, var(--gold) 50%, transparent 50%); background-position: calc(100% - 19px) 21px, calc(100% - 14px) 21px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.field select option { background: var(--ink-3); color: var(--on-dark-1); }

.form-note { font-size: 12px; color: var(--on-dark-3); line-height: 2; letter-spacing: .05em; }

.panel {
  border: 1px solid var(--hair-soft); background: rgba(20,18,14,.62);
  padding: 42px; position: relative;
}
.panel::before {
  content: ''; position: absolute; top: -1px; left: -1px; width: 34px; height: 34px;
  border-top: 1px solid var(--gold); border-left: 1px solid var(--gold);
}
.panel::after {
  content: ''; position: absolute; bottom: -1px; right: -1px; width: 34px; height: 34px;
  border-bottom: 1px solid var(--gold); border-right: 1px solid var(--gold);
}

/* ───────────────── 购物车 / 结算 ───────────────── */

.cart-layout { display: grid; grid-template-columns: 1.55fr 1fr; gap: 54px; align-items: start; padding: 56px 0 96px; }
.cart-list { border-top: 1px solid var(--hair-soft); }
.cart-item {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 22px; align-items: center;
  padding: 24px 0; border-bottom: 1px solid var(--hair-soft);
}
.cart-item .ph { aspect-ratio: 4/5; background-size: cover; background-position: center; background: var(--ink-3); border: 1px solid var(--hair-soft); }
.cart-item h4 { margin: 0 0 7px; font-size: 15.5px; letter-spacing: .1em; font-weight: 400; }
.cart-item .m { font-family: var(--sans); font-size: 11.5px; color: var(--on-dark-3); letter-spacing: .1em; }
.cart-item .rt { text-align: right; }
.cart-item .rt .p { font-size: 17px; color: var(--gold-lit); }
.cart-item .rm { font-family: var(--sans); font-size: 11px; color: var(--on-dark-3); margin-top: 10px; letter-spacing: .14em; }
.cart-item .rm:hover { color: var(--gold); }
.cart-item .qty { display: inline-flex; margin-top: 12px; }
.cart-item .qty button { width: 30px; height: 30px; font-size: 14px; }
.cart-item .qty input { width: 44px; height: 30px; font-size: 12.5px; }

.summary { border: 1px solid var(--hair-soft); padding: 34px; background: rgba(20,18,14,.62); position: sticky; top: 100px; }
.summary h3 { font-size: 17px; letter-spacing: .2em; margin: 0 0 26px; font-weight: 400; }
.sum-row { display: flex; justify-content: space-between; padding: 12px 0; font-size: 13.5px; color: var(--on-dark-2); letter-spacing: .08em; }
.sum-row.total { border-top: 1px solid var(--hair); margin-top: 14px; padding-top: 20px; align-items: baseline; }
.sum-row.total b { font-size: 27px; color: var(--gold-lit); font-weight: 400; }
.free-tip { font-family: var(--sans); font-size: 11px; letter-spacing: .12em; color: var(--gold); padding: 10px 0; }

.empty { text-align: center; padding: 90px 20px; }
.empty .ic { font-size: 40px; color: var(--gold-deep); margin-bottom: 22px; }
.empty p { color: var(--on-dark-3); margin-bottom: 26px; }

/* ───────────────── 提示 / 弹层 ───────────────── */

.toast-wrap { position: fixed; top: 96px; right: 26px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: rgba(20,18,14,.97); border: 1px solid var(--gold);
  padding: 14px 22px; font-size: 13px; letter-spacing: .12em; color: var(--on-dark-1);
  animation: toastIn .4s var(--ease); max-width: 340px;
}
.toast.err { border-color: #a4442f; }
@keyframes toastIn { from { opacity: 0; transform: translateX(24px); } }

.modal-mask {
  position: fixed; inset: 0; background: rgba(6,5,4,.82); z-index: 300;
  display: none; align-items: center; justify-content: center; padding: 24px;
  backdrop-filter: blur(4px);
}
.modal-mask.on { display: flex; }
.modal {
  background: var(--ink-2); border: 1px solid var(--hair); width: min(520px, 100%);
  padding: 44px; position: relative; max-height: 88vh; overflow: auto;
}
.modal .x { position: absolute; top: 14px; right: 18px; font-size: 20px; color: var(--on-dark-3); }
.modal .x:hover { color: var(--gold); }

/* ───────────────── 动画 ───────────────── */

/* 进场动画为渐进增强：仅在 JS 可用时隐藏，避免无 JS 环境下内容不可见 */
.js .rv { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js .rv { opacity: 1; transform: none; transition: none; }
}

/* ───────────────── 响应式 ───────────────── */

@media (max-width: 1080px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .prod-grid.col3,
  .prod-grid.cols-2, .prod-grid.cols-3, .prod-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .steps, .steps.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .stats, .stats.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .pd { grid-template-columns: 1fr; gap: 46px; }
  .cart-layout { grid-template-columns: 1fr; }
  .summary { position: static; }
  .split { grid-template-columns: 1fr; gap: 50px; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .nav-links { display: none; }
  .burger { display: block; }
}

@media (max-width: 720px) {
  .wrap, .wrap-slim { width: calc(100% - 40px); }
  section.block { padding: 72px 0; }
  .hero { min-height: 88vh; }
  .hero-in { padding: 76px 0 150px; }
  .hero-side { display: none; }
  .hero-meta-in { grid-template-columns: repeat(2, 1fr); }
  .hero-meta-in > div:nth-child(2) { border-right: 0; }
  .cat-grid,
  .prod-grid, .prod-grid.col3, .prod-grid.cols-2, .prod-grid.cols-3, .prod-grid.cols-4,
  .form-grid,
  .steps, .steps.cols-3,
  .stats, .stats.cols-4 { grid-template-columns: 1fr; }
  .step { padding: 34px 24px; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 22px; margin-bottom: 40px; }
  .panel { padding: 28px 22px; }
  .cart-item { grid-template-columns: 74px 1fr; }
  .cart-item .rt { grid-column: 2; text-align: left; }
  .modal { padding: 30px 22px; }
  .foot-grid { grid-template-columns: 1fr; }
  .notes { grid-template-columns: 1fr; }
  .nav { height: 66px; }
  .brand { gap: 10px; }
  .brand-mark { height: 38px; }
  .brand.lockup img { height: 108px; }
}