/* ============================================================
   flagship.css — 品类旗舰商店公共框架样式
   配套 assets/flagship.js（购物车引擎 + 页面渲染器）。
   品牌调性由每页 <style> 覆盖变量：
   --bg/--ink/--sub/--line/--amber/--btn-bg/--btn-ink/
   --strip-bg/--strip-ink/--card-bg/--serif/--sans
   首页版式骨架由各店 index.html 内嵌样式独立定义。
   ============================================================ */

:root{
  --serif:"Cormorant Garamond","Noto Serif SC","Songti SC","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --bg:#FBFAF8;
  --ink:#1F1B16;
  --sub:#8B8578;
  --line:#E6E2DA;
  --amber:#8A6D3B;
  --btn-bg:#1F1B16;
  --btn-ink:#FBFAF8;
  --strip-bg:#17140F;
  --strip-ink:#F5F3EF;
  --card-bg:#F3F0EA;
}

*{margin:0;padding:0;box-sizing:border-box}

html{overflow-x:clip}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:100%;object-fit:cover;font-size:0}
.fs-wrap{max-width:1180px;margin:0 auto;padding:0 32px;width:100%}

/* ---------- demo-strip ---------- */

.fs-strip{
  background:var(--strip-bg);
  color:var(--strip-ink);
  font-size:11.5px;letter-spacing:.12em;
}
.fs-strip .fs-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding-top:9px;padding-bottom:9px;
}
.fs-strip .strip-left{opacity:.72}
.fs-strip a{
  opacity:.72;border-bottom:1px solid currentColor;padding-bottom:1px;
  transition:opacity .28s ease-out;flex-shrink:0;
}
.fs-strip a:hover{opacity:1}
.fs-strip .strip-badge{
  display:inline-block;border:1px solid rgba(245,243,239,.45);border-radius:999px;
  padding:2px 10px;margin-right:12px;font-size:10px;letter-spacing:.22em;vertical-align:1px;
}

/* ---------- 页头 ---------- */

.fs-header{border-bottom:1px solid var(--line)}
.fs-header .fs-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:74px;gap:24px;
}
.fs-logo{
  font-family:var(--serif);font-size:23px;letter-spacing:.32em;
  line-height:1.1;flex-shrink:0;
}
.fs-logo small{
  display:block;font-size:9px;letter-spacing:.5em;color:var(--sub);
  margin-top:2px;font-family:var(--sans);
}
.fs-menu{display:flex;gap:34px;font-size:13px;letter-spacing:.16em;color:var(--sub)}
.fs-menu a{transition:color .25s ease-out;padding-bottom:2px}
.fs-menu a:hover{color:var(--amber)}
.fs-menu a[aria-current="page"]{color:var(--ink);border-bottom:1px solid var(--amber)}
.fs-icons{display:flex;align-items:center;gap:20px;color:var(--sub);flex-shrink:0;font-size:13px;letter-spacing:.16em}
.fs-icons a{color:var(--sub);padding-bottom:2px;border-bottom:1px solid transparent;transition:color .15s ease,border-color .15s ease}
.fs-icons a:hover{color:var(--ink);border-bottom-color:currentColor}
.fs-bag{position:relative;color:var(--ink);display:inline-flex;align-items:baseline;gap:1px}
.fs-bag:hover{color:var(--ink);border-bottom-color:var(--ink)}
.fs-badge{
  display:inline-block;
  color:var(--amber);
  font-size:12px;line-height:1;text-align:left;
  font-family:var(--sans);letter-spacing:0;padding:0;
}
.fs-badge::before{content:"("}
.fs-badge::after{content:")"}
.fs-badge[data-n="0"]{display:none}
.fs-badge.pop{animation:fsPop .35s ease-out}
@keyframes fsPop{
  40%{transform:scale(1.35)}
  100%{transform:scale(1)}
}

/* ---------- 通用按钮 ---------- */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--btn-bg);color:var(--btn-ink);
  padding:14px 36px;font-size:12px;letter-spacing:.28em;
  width:max-content;cursor:pointer;border:0;font-family:var(--sans);
  transition:opacity .25s ease-out,transform .25s ease-out;
}
.btn:hover{opacity:.86}
.btn:active{transform:scale(.98)}
.btn-ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--ink);
}
.btn-sm{padding:9px 18px;letter-spacing:.2em;font-size:11px}
.btn.is-added{background:var(--amber);pointer-events:none}
.fs-add-note{
  font-size:12px;color:var(--amber);letter-spacing:.06em;
  opacity:0;transform:translateY(4px);
  transition:opacity .3s ease-out,transform .3s ease-out;
}
.fs-add-note.show{opacity:1;transform:none}

/* ---------- 区块骨架 ---------- */

.fs-sec{padding:88px 0}
.fs-sec-head{margin-bottom:44px}
.fs-eyebrow{
  font-size:11px;letter-spacing:.3em;color:var(--amber);
  text-transform:uppercase;margin-bottom:14px;
}
.fs-sec-head h2{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(26px,3.4vw,38px);line-height:1.25;letter-spacing:.06em;
}
.fs-lede{color:var(--sub);max-width:560px;margin-top:12px;font-size:14px}

/* ---------- 商品卡网格 ---------- */

.fs-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
  gap:34px 28px;
}
.fs-card{display:flex;flex-direction:column;gap:16px}
.fs-card-media{
  display:block;aspect-ratio:4/5;background:var(--card-bg);
  overflow:hidden;
}
.fs-card-media img{transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.fs-card:hover .fs-card-media img{transform:scale(1.045)}
.fs-card h3{
  font-size:15px;font-weight:500;letter-spacing:.06em;line-height:1.5;
}
.fs-card .fs-card-en{
  font-size:10.5px;letter-spacing:.2em;color:var(--sub);text-transform:uppercase;
  margin-top:2px;
}
.fs-card-desc{
  font-size:12.5px;color:var(--sub);line-height:1.8;margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.fs-card-foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-top:auto;padding-top:6px;flex-wrap:wrap;
}
.fs-price{
  font-family:var(--serif);font-size:17px;letter-spacing:.04em;color:var(--ink);
  white-space:nowrap;
}
.fs-price small{font-size:11px;color:var(--sub);font-family:var(--sans)}

/* ---------- 列表页头 ---------- */

.fs-pagehead{padding:64px 0 0}
.fs-crumb{
  font-size:11px;letter-spacing:.2em;color:var(--sub);margin-bottom:16px;
}
.fs-crumb a{border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.fs-crumb a:hover{color:var(--amber);border-color:currentColor}
.fs-pagehead h1{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(30px,4.4vw,48px);letter-spacing:.06em;line-height:1.2;
}
.fs-pagehead .fs-page-sub{color:var(--sub);margin-top:10px;font-size:14px}

/* ---------- 商品详情 ---------- */

.fs-pd{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;align-items:start;
}
.fs-pd-media{position:sticky;top:32px}
.fs-pd-main{
  aspect-ratio:4/5;background:var(--card-bg);overflow:hidden;
  min-height:200px;
}
.fs-thumbs{display:flex;gap:12px;margin-top:12px}
.fs-thumbs button{
  width:86px;aspect-ratio:4/5;
  min-height:90px;background:var(--card-bg);
  border:1px solid var(--line);cursor:pointer;padding:0;overflow:hidden;
  transition:border-color .25s;
}
.fs-thumbs button[aria-pressed="true"]{border-color:var(--amber)}
.fs-pd-info h1{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(26px,3vw,34px);letter-spacing:.05em;line-height:1.25;
}
.fs-pd-en{
  font-size:11px;letter-spacing:.26em;color:var(--sub);text-transform:uppercase;
  margin-top:8px;
}
.fs-pd-price{
  font-family:var(--serif);font-size:26px;margin-top:22px;letter-spacing:.03em;
}
.fs-pd-price small{font-size:13px;color:var(--sub);font-family:var(--sans)}
.fs-pd-desc{color:var(--sub);font-size:14px;margin-top:18px;line-height:1.9}
.fs-qty{
  display:inline-flex;align-items:center;border:1px solid var(--line);margin-top:26px;
}
.fs-qty button{
  width:42px;height:44px;border:0;background:transparent;color:var(--ink);
  font-size:17px;cursor:pointer;font-family:var(--sans);
  transition:background .2s;
}
.fs-qty button:hover{background:var(--card-bg)}
.fs-qty output{
  width:52px;text-align:center;font-size:14px;
  border-inline:1px solid var(--line);line-height:44px;
}
.fs-pd-buy{display:flex;align-items:center;gap:18px;margin-top:26px;flex-wrap:wrap}
.fs-pd-meta{
  margin-top:30px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--sub);line-height:2.1;
}
.fs-pd-meta b{font-weight:500;color:var(--ink)}

/* ---------- 购物袋 ---------- */

.fs-cart-list{display:flex;flex-direction:column}
.fs-cart-row{
  display:grid;
  grid-template-columns:96px minmax(0,1fr) 110px minmax(0,auto) 90px 32px;
  gap:20px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.fs-cart-row .fs-row-media{
  aspect-ratio:4/5;
  min-height:90px;background:var(--card-bg);overflow:hidden;display:block;
}
.fs-cart-row h3{font-size:14px;font-weight:500;letter-spacing:.05em}
.fs-cart-row .fs-row-en{font-size:10px;letter-spacing:.18em;color:var(--sub);margin-top:2px;text-transform:uppercase}
.fs-cart-row .fs-row-price{font-size:13.5px;color:var(--sub);white-space:nowrap}
.fs-cart-row .fs-row-subtotal{
  font-family:var(--serif);font-size:16px;text-align:right;white-space:nowrap;
}
.fs-cart-del{
  border:0;background:transparent;color:var(--sub);cursor:pointer;
  font-size:18px;line-height:1;padding:6px;transition:color .2s;
}
.fs-cart-del:hover{color:#B4443C}
.fs-cart-summary{
  display:flex;flex-direction:column;align-items:flex-end;
  gap:18px;margin-top:34px;text-align:right;
}
.fs-cart-total{font-size:14px;color:var(--sub)}
.fs-cart-total b{
  font-family:var(--serif);font-size:26px;color:var(--ink);
  font-weight:500;margin-left:12px;letter-spacing:.03em;
}
.fs-checkout-note{
  display:none;margin-top:22px;
  border:1px solid var(--line);background:var(--card-bg);
  padding:22px 26px;text-align:left;max-width:520px;
  font-size:13px;color:var(--sub);line-height:2;
}
.fs-checkout-note.show{display:block}
.fs-checkout-note a{color:var(--amber);border-bottom:1px solid currentColor;padding-bottom:1px}
.fs-empty{
  padding:110px 0;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:22px;
}
.fs-empty p{color:var(--sub);letter-spacing:.1em}

/* ---------- 空链接兜底（JS 未执行时保留可读文案） ---------- */

.no-js-hide{display:none}
.js-on .no-js-hide{display:revert}
.js-on .js-only-hide{display:none}

/* ---------- 页脚 ---------- */

.fs-footer{border-top:1px solid var(--line);color:var(--sub);font-size:12px;margin-top:96px}
.fs-footer .ft-top{
  display:flex;justify-content:space-between;align-items:center;gap:40px;
  padding:34px 0;flex-wrap:wrap;
}
.fs-footer .brand{display:flex;flex-direction:column;line-height:1.2;flex-shrink:0}
.fs-footer .brand-mark{font-family:var(--serif);font-size:16px;letter-spacing:.18em;color:var(--ink);white-space:nowrap}
.fs-footer .brand-mark::after{content:"®";font-family:var(--sans);font-size:.5em;letter-spacing:0;margin-left:.12em;vertical-align:.55em;color:var(--amber)}
.fs-footer .brand-sub{font-size:9px;letter-spacing:.4em;margin-top:3px}
.fs-footer .ft-nav{display:flex;gap:26px;flex-wrap:wrap;letter-spacing:.1em}
.fs-footer .ft-nav a{transition:color .2s}
.fs-footer .ft-nav a:hover{color:var(--amber)}
.fs-footer .ft-bottom{
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:18px 0;opacity:.85;
}
.fs-footer .ft-note{
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:18px 0;line-height:1.9;
}
.fs-footer .ft-note a{
  color:var(--amber);border-bottom:1px solid currentColor;
  padding-bottom:1px;flex-shrink:0;
}

/* ---------- reveal 门控（移动端同步启用；reduced-motion 全关） ---------- */

.js-reveal .reveal{opacity:0;transform:translateY(16px)}
.js-reveal .reveal.is-visible{opacity:1;transform:none;transition:opacity .55s ease-out,transform .55s ease-out}
.js-reveal .reveal.is-visible > .fs-wrap > *,
.js-reveal .reveal.is-visible > *:not(.fs-wrap){
  animation:fsRise .55s cubic-bezier(.22,.61,.36,1) backwards;
  animation-delay:var(--d,0ms);
}
@keyframes fsRise{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){
  .js-reveal .reveal,
  .js-reveal .reveal.is-visible,
  .js-reveal .reveal.is-visible > .fs-wrap > *,
  .js-reveal .reveal.is-visible > *:not(.fs-wrap){
    animation:none!important;transition:none!important;
    opacity:1!important;transform:none!important;
  }
  .fs-card-media img,.fs-badge.pop{animation:none!important}
}

/* ---------- 触屏/点击反馈 ---------- */

@media (hover:hover){
  .fs-card-media,.btn,.fs-qty button{transition-timing-function:ease-out}
}
.fs-card-media:active img{transform:scale(.985)}

/* ---------- 响应式收敛 ---------- */

@media (max-width:900px){
  .fs-menu{display:none}
  .fs-sec{padding:64px 0}
  .fs-pd{grid-template-columns:1fr;gap:36px}
  .fs-pd-media{position:static}
  .fs-wrap{padding:0 22px}
  .fs-strip .fs-wrap{padding-top:9px;padding-bottom:9px}
  .fs-grid{grid-template-columns:repeat(2,1fr);gap:28px 16px}
}

@media (max-width:640px){
  .fs-cart-row{
    grid-template-columns:72px minmax(0,1fr) 32px;
    grid-template-areas:"media info del" "media qty del" "media subtotal subtotal";
    row-gap:10px;
  }
  .fs-cart-row .fs-row-media{grid-area:media}
  .fs-cart-row .fs-row-info{grid-area:info}
  .fs-cart-row .fs-qty{grid-area:qty;margin-top:0;justify-self:start}
  .fs-cart-row .fs-row-price{display:none}
  .fs-cart-row .fs-row-subtotal{grid-area:subtotal;text-align:left}
  .fs-cart-row .fs-cart-del{grid-area:del;justify-self:end}
  .fs-cart-summary{align-items:stretch;text-align:left}
  .fs-checkout-note{max-width:none}
  .fs-grid{grid-template-columns:1fr 1fr}
  .fs-thumbs button{width:70px}
  .fs-strip .strip-left{display:none}
  .fs-logo{font-size:20px}
}