/* ============================================================
   PDP
   ============================================================ */
.crumb{max-width:var(--wrap);margin:0 auto;padding:18px 32px 0;display:flex;align-items:center;
  gap:9px;font-size:12px;color:var(--muted-2);flex-wrap:wrap}
.crumb a:hover{color:var(--acc)}
.crumb i{font-style:normal;opacity:.45}
.crumb b{color:var(--muted);font-weight:500}

.pdp{padding:24px 0 0}
.pdp__in{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);gap:52px;align-items:start}

/* gallery */
.gal{position:sticky;top:92px}
.gal__stage{position:relative;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  aspect-ratio:1/1;display:grid;place-items:center;
  background:radial-gradient(circle at 50% 44%,#1A241C 0%,#0D1210 58%,#0A0E0C 100%)}
.gal__stage::before{content:"";position:absolute;width:72%;aspect-ratio:1;border-radius:50%;
  border:1px solid rgba(184,239,108,.14);box-shadow:0 0 0 44px rgba(184,239,108,.025),0 0 0 92px rgba(184,239,108,.016)}
.gal__stage img{position:relative;height:84%;width:auto;max-width:86%;
  filter:drop-shadow(0 32px 50px rgba(0,0,0,.72));
  transition:opacity .28s var(--ease),transform .6s var(--ease)}
.gal__tag{position:absolute;top:14px;left:14px;z-index:2;display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:6px;background:var(--acc);color:#0A1008;
  font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.gal__note{position:absolute;bottom:14px;right:16px;font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted-2)}
.gal__thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:9px}
.gal__thumbs button{position:relative;border:1px solid var(--line);border-radius:11px;background:var(--surface);
  aspect-ratio:1/1;display:grid;place-items:center;padding:9px;transition:.2s}
.gal__thumbs button:hover{border-color:var(--line-2)}
.gal__thumbs button.on{border-color:var(--acc);background:var(--acc-dim)}
.gal__thumbs img{width:100%;height:100%;object-fit:contain;opacity:.72;transition:opacity .2s}
.gal__thumbs button.on img,.gal__thumbs button:hover img{opacity:1}

/* 画廊：页码 + 左右切换 */
.gal__count{position:absolute;top:14px;right:14px;z-index:3;padding:4px 9px;border-radius:6px;
  font-size:11px;letter-spacing:.08em;color:var(--muted);
  background:rgba(8,10,9,.72);border:1px solid var(--line)}
.gal__nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:38px;height:38px;display:grid;place-items:center;border-radius:50%;
  background:rgba(10,14,12,.8);border:1px solid var(--line-2);color:var(--ink);
  opacity:0;pointer-events:none;transition:opacity .2s,background .2s,color .2s,border-color .2s}
.gal__nav svg{width:18px;height:18px;stroke:currentColor;stroke-width:2.2;fill:none;
  stroke-linecap:round;stroke-linejoin:round}
.gal__stage:hover .gal__nav,.gal__nav:focus-visible{opacity:1;pointer-events:auto}
.gal__nav:hover{background:var(--acc);color:#0A1008;border-color:var(--acc)}
.gal__nav--prev{left:12px}
.gal__nav--next{right:12px}
/* 触屏设备没有 hover，箭头常显 */
@media (hover:none){
  .gal__nav{opacity:1;pointer-events:auto}
}

/* 缺货口味：按钮禁用态 */
.btn:disabled,.btn.is-oos{opacity:.42;cursor:not-allowed;pointer-events:none}

/* buy box */
.buy__brand{font-family:var(--f-cond);font-size:12.5px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted-2)}
.buy__h{font-family:var(--f-disp);text-transform:uppercase;font-size:clamp(26px,3vw,37px);
  line-height:1.02;letter-spacing:-.01em;margin-top:10px}
.buy__sub{color:var(--muted);font-size:14px;line-height:1.72;margin-top:12px;max-width:480px}
.buy__rate{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12.5px;color:var(--muted-2)}
.buy__rate .stars{color:var(--acc);letter-spacing:2px;font-size:13px}
.buy__rate a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}

.buy__price{display:flex;align-items:baseline;gap:12px;margin-top:20px;padding-top:18px;
  border-top:1px solid var(--line)}
.buy__price b{font-family:var(--f-cond);font-size:42px;font-weight:700;line-height:.95}
.buy__price em{font-style:normal;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}

.pick{margin-top:22px}
.pick__hd{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.pick__hd span{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}
.pick__hd b{font-size:13px;font-weight:600;color:var(--ink)}
.pick__grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.fopt{display:flex;align-items:center;gap:9px;padding:11px 12px;border:1px solid var(--line);
  border-radius:9px;background:var(--surface);font-size:12.5px;text-align:left;line-height:1.3;
  transition:border-color .18s,background .18s,color .18s}
.fopt:hover{border-color:var(--line-2);background:var(--surface-2)}
.fopt.on{border-color:var(--acc);background:var(--acc-dim);color:#fff}
.fopt i{width:8px;height:8px;border-radius:50%;flex:0 0 auto}
/* 颜色变体：色块展示 */
.fopt--swatch .fopt__swatch{width:16px;height:16px;border-radius:50%;flex:0 0 auto;
  border:1px solid rgba(255,255,255,.22);box-shadow:inset 0 0 0 2px var(--surface)}
.fopt--swatch .fopt__swatch[data-swatch="white"],.fopt--swatch .fopt__swatch[data-swatch="White"]{background:#F4F7F3}
.fopt--swatch .fopt__swatch[data-swatch="black"],.fopt--swatch .fopt__swatch[data-swatch="Black"]{background:#161A18}
.fopt--swatch .fopt__swatch[data-swatch="blue"],.fopt--swatch .fopt__swatch[data-swatch="Blue"]{background:#3B82F6}
.fopt--swatch .fopt__swatch[data-swatch="red"],.fopt--swatch .fopt__swatch[data-swatch="Red"]{background:#EF4444}
.fopt--swatch .fopt__swatch[data-swatch="green"],.fopt--swatch .fopt__swatch[data-swatch="Green"]{background:#22C55E}
.fopt--swatch .fopt__swatch[data-swatch="pink"],.fopt--swatch .fopt__swatch[data-swatch="Pink"]{background:#EC4899}
.fopt--swatch .fopt__swatch[data-swatch="purple"],.fopt--swatch .fopt__swatch[data-swatch="Purple"]{background:#8B5CF6}
.fopt--swatch .fopt__swatch[data-swatch="yellow"],.fopt--swatch .fopt__swatch[data-swatch="Yellow"]{background:#EAB308}
.fopt--swatch .fopt__swatch[data-swatch="orange"],.fopt--swatch .fopt__swatch[data-swatch="Orange"]{background:#F97316}
.fopt--swatch .fopt__swatch[data-swatch="grey"],.fopt--swatch .fopt__swatch[data-swatch="gray"],.fopt--swatch .fopt__swatch[data-swatch="Grey"],.fopt--swatch .fopt__swatch[data-swatch="Gray"]{background:#6B7280}

.buyrow{display:flex;gap:10px;margin-top:20px}
.qty{display:flex;align-items:center;height:54px;border:1px solid var(--line-2);border-radius:10px;
  overflow:hidden;flex:0 0 auto}
.qty button{width:42px;height:100%;font-size:17px;color:var(--muted);transition:.15s}
.qty button:hover{background:var(--surface-2);color:var(--ink)}
.qty input{width:36px;height:100%;text-align:center;background:none;border:0;color:var(--ink);
  font-family:var(--f-ui);font-weight:600;font-size:14px}
.buyrow .btn{height:54px;flex:1;font-size:13px}
.buyrow .btn--ghost{flex:0 0 auto;padding:0 22px}

.trustmini{display:grid;gap:9px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.trustmini div{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted)}
.trustmini svg{width:16px;height:16px;stroke:var(--acc);stroke-width:1.9;fill:none;
  stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}

/* accordion */
.acc{margin-top:20px;border-top:1px solid var(--line)}
.acc details{border-bottom:1px solid var(--line)}
.acc summary{cursor:pointer;list-style:none;position:relative;padding:15px 26px 15px 0;
  font-size:13.5px;font-weight:600;letter-spacing:.005em}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  color:var(--acc);font-size:17px;line-height:1;font-weight:400}
.acc details[open] summary::after{content:"\2013"}
.acc p{margin:0 0 16px;color:var(--muted);font-size:13px;line-height:1.75}
.acc p:last-child{margin-bottom:16px}

/* spec band */
.specband{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg-2);margin-top:34px}
.specband__in{max-width:var(--wrap);margin:0 auto;padding:0 32px;display:grid;
  grid-template-columns:repeat(4,1fr)}
.sb{padding:22px 20px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:1px}
.sb:first-child{border-left:0;padding-left:0}
.sb b{font-family:var(--f-cond);font-size:34px;font-weight:700;line-height:1;color:var(--acc)}
.sb span{font-size:10.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted-2)}

/* feature rows */
.feat{padding:80px 0;border-bottom:1px solid var(--line)}
.feat__in{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.feat--rev .feat__media{order:2}
.feat__media{position:relative;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  aspect-ratio:1.12/1;display:grid;place-items:center;
  background:radial-gradient(circle at 50% 45%,#182019 0%,#0C110F 62%,#0A0E0C 100%)}
.feat__media img{height:82%;width:auto;max-width:80%;filter:drop-shadow(0 26px 40px rgba(0,0,0,.7))}
.feat__no{position:absolute;left:20px;top:16px;font-family:var(--f-cond);font-size:12px;
  letter-spacing:.2em;color:var(--muted-2)}
.feat__h{font-family:var(--f-disp);text-transform:uppercase;font-size:clamp(23px,2.8vw,34px);
  line-height:1.06;margin-top:12px;letter-spacing:-.01em}
.feat__p{color:var(--muted);font-size:14.5px;line-height:1.76;margin:16px 0 0;max-width:470px}
.feat__list{margin-top:22px;display:grid;gap:10px}
.feat__list li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted)}
.feat__list svg{width:15px;height:15px;margin-top:3px;stroke:var(--acc);stroke-width:2.2;fill:none;
  stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}

/* spec table */
.stable{width:100%;border-collapse:collapse;font-size:13.5px}
.stable tr{border-bottom:1px solid var(--line)}
.stable tr:last-child{border-bottom:0}
.stable th{text-align:left;font-weight:500;color:var(--muted-2);padding:13px 20px 13px 0;
  width:46%;letter-spacing:.02em;vertical-align:top}
.stable td{padding:13px 0;color:var(--ink);font-weight:500}
.stablewrap{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:4px 22px}
.specgrid{display:grid;grid-template-columns:1.6fr 1fr;gap:24px;align-items:start}
.infocard{border:1px solid var(--line);border-radius:14px;padding:22px 24px;
  background:linear-gradient(160deg,var(--surface-2),var(--surface))}
.infocard h3{font-family:var(--f-disp);font-size:12.5px;text-transform:uppercase;letter-spacing:.03em}
.infocard ul{margin-top:16px;display:grid;gap:15px}
.infocard li{display:flex;gap:11px;align-items:flex-start}
.infocard svg{width:17px;height:17px;margin-top:2px;stroke:var(--acc);stroke-width:1.9;fill:none;
  stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.infocard b{display:block;font-size:12.5px;line-height:1.4}
.infocard span{display:block;font-size:11.5px;color:var(--muted-2);margin-top:1px;line-height:1.5}

/* reviews (placeholder) */
.pdp__rev{display:grid;grid-template-columns:290px 1fr;gap:46px;align-items:start}
.pdp__note{font-size:11.5px;color:var(--muted-2);line-height:1.7;margin:20px 0 0;
  padding-top:14px;border-top:1px solid var(--line)}
.pdp__rlist{display:grid;gap:12px}
.pdp__rc{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:16px 18px}
.pdp__rc .stars{color:var(--acc);font-size:12px;letter-spacing:2px}
.pdp__rc p{margin:9px 0 0;font-size:13px;color:var(--muted);line-height:1.7}
.pdp__rc b{font-size:12.5px;display:block;margin-top:11px}
.pdp__rc b em{font-style:normal;color:var(--acc);font-weight:500;margin-left:6px;font-size:11px}

/* related cards */
.card__name a:hover{color:var(--acc)}
.card__media-link{position:relative;display:block}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* sticky buy bar (mobile) */
.stickybuy{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;align-items:center;gap:12px;
  padding:10px 16px;background:rgba(10,14,12,.95);border-top:1px solid var(--line-2);
  backdrop-filter:blur(14px);transform:translateY(110%);transition:transform .3s var(--ease)}
.stickybuy.on{transform:translateY(0)}
.stickybuy img{width:42px;height:42px;object-fit:contain;flex:0 0 auto}
.stickybuy__t{flex:1;min-width:0}
.stickybuy__t b{display:block;font-size:12.5px;line-height:1.3;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.stickybuy__t span{font-size:11px;color:var(--muted-2)}
.stickybuy .btn{height:44px;padding:0 18px;font-size:12px}

/* ---------- express checkout sheet (BUY NOW) ---------- */
.bsheet{position:fixed;inset:0;z-index:95;display:none}
.bsheet.on{display:block}
.bsheet__bg{position:absolute;inset:0;background:rgba(3,5,4,.72);opacity:0;transition:opacity .3s var(--ease)}
.bsheet.on .bsheet__bg{opacity:1}
.bsheet__panel{position:absolute;right:0;top:0;bottom:0;width:min(430px,100%);
  display:flex;flex-direction:column;background:var(--surface);border-left:1px solid var(--line-2);
  box-shadow:-40px 0 90px rgba(0,0,0,.65);transform:translateX(102%);
  transition:transform .36s var(--ease)}
.bsheet.on .bsheet__panel{transform:none}
.bsheet__hd{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:22px 24px 18px;border-bottom:1px solid var(--line)}
.bsheet__hd b{display:block;font-family:var(--f-disp);font-size:15px;text-transform:uppercase;
  letter-spacing:.03em;color:var(--ink)}
.bsheet__hd span{display:block;margin-top:5px;font-size:11.5px;color:var(--muted-2)}
.bsheet__x{width:32px;height:32px;flex:0 0 auto;display:grid;place-items:center;border-radius:8px;
  border:1px solid var(--line);color:var(--muted);transition:.2s}
.bsheet__x:hover{color:var(--ink);border-color:var(--line-2)}
.bsheet__x svg{width:11px;height:11px;stroke:currentColor;stroke-width:2;fill:none}
.bsheet__body{flex:1;overflow-y:auto;padding:22px 24px}
.bs__item{display:flex;gap:14px;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--line)}
.bs__item img{width:84px;height:84px;object-fit:contain;flex:0 0 auto;border-radius:12px;
  border:1px solid var(--line);background:radial-gradient(circle at 50% 45%,#1A2220,#0D1210 70%)}
.bs__item b{display:block;font-size:13px;line-height:1.35;color:var(--ink)}
.bs__item span{display:block;margin-top:5px;font-size:11.5px;color:var(--muted-2)}
.bs__rows{padding-top:8px}
.bs__row{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 0;font-size:12.5px;color:var(--muted)}
.bs__row b{color:var(--ink);font-weight:600}
.bs__row--total{margin-top:6px;padding-top:15px;border-top:1px solid var(--line);font-size:13px}
.bs__row--total b{font-family:var(--f-disp);font-size:19px;color:var(--acc)}
.bs__pay{margin-top:22px}
.bs__pay p{margin:0 0 10px;font-size:10.5px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted-2)}
.bs__pay .pay{margin-top:0}
.bsheet__ft{padding:18px 24px 22px;border-top:1px solid var(--line);background:var(--surface-2)}
.bsheet__ft .btn{width:100%;justify-content:center}
.bs__note{margin:12px 0 0;font-size:11px;line-height:1.6;color:var(--muted-2);text-align:center}
.bs__note.hi{color:var(--warn)}

@media (max-width:1080px){
  .pdp__in{gap:34px}
  .feat__in{gap:34px}
  .pdp__rev{grid-template-columns:1fr;gap:26px}
  .specgrid{grid-template-columns:1fr}
}
@media (max-width:900px){
  .grid-3{grid-template-columns:1fr 1fr}
  .gal{position:static}
  .pdp__in{grid-template-columns:1fr;gap:24px}
  .gal__stage{aspect-ratio:1/.92}
  .gal__stage img{width:64%}
  .specband__in{grid-template-columns:1fr 1fr;padding:0 20px}
  .sb{border-left:0;border-top:1px solid var(--line);padding:18px 0}
  .sb:nth-child(-n+2){border-top:0}
  .feat{padding:52px 0}
  .feat__in{grid-template-columns:1fr;gap:26px}
  .feat--rev .feat__media{order:0}
  .feat__media{aspect-ratio:1.3/1}
  .feat__media img{width:42%}
  .stickybuy{display:flex}
  body{padding-bottom:66px}
}
@media (max-width:560px){
  .bsheet__panel{top:auto;left:0;width:100%;max-height:88vh;border-left:0;
    border-top:1px solid var(--line-2);border-radius:16px 16px 0 0;transform:translateY(102%)}
  .bsheet__hd{padding:18px 20px 14px}
  .bsheet__body{padding:18px 20px}
  .bsheet__ft{padding:16px 20px 20px}
  .bs__item img{width:70px;height:70px}
  .crumb{padding:12px 20px 0;font-size:11.5px}
  .buy__h{font-size:23px}
  .buy__sub{font-size:13px}
  .buy__price b{font-size:34px}
  .pick__grid{gap:7px}
  .fopt{padding:9px 10px;font-size:11.5px}
  .buyrow{flex-wrap:wrap}
  .buyrow .qty{flex:0 0 116px;justify-content:space-between}
  .buyrow .btn{flex:1 1 0;padding:0 14px}
  .buyrow .btn--ghost{flex:1 0 100%}
  .specband__in{grid-template-columns:1fr 1fr}
  .sb b{font-size:26px}
  .stablewrap{padding:2px 14px}
  .stable th,.stable td{font-size:12.5px;padding:11px 0}
  .stable th{width:50%;padding-right:12px}
}