/* ============================================================================
   apple-elegant — Asquad in-house B2B export website template
   Design DNA: Apple (reductive minimalism, cinematic light/dark section rhythm,
   SF Pro optical typography, single Apple-Blue accent, 980px pill CTAs,
   translucent glass nav, soft diffused product shadows).
   SF Pro is Apple-proprietary; we ship the same intent with Inter as the
   web-safe carrier and the SF Pro stack as the first preference where present.
   ========================================================================== */

:root {
  /* Apple palette — exact hex from DESIGN.md */
  --black: #000000;
  --gray-bg: #f3f3f3;        /* Shopify Dawn 中性浅灰 (colors_background_2)，无蓝调 */
  --near-black: #1d1d1f;     /* primary text on light, dark button fill */
  --blue: #0071e3;           /* Apple Blue — interactive elements ONLY */
  --link: #0066cc;           /* inline links on light bg */
  --link-bright: #2997ff;    /* links on dark bg */
  --white: #ffffff;
  --t80: rgba(0, 0, 0, 0.8); /* secondary text on light */
  --t48: rgba(0, 0, 0, 0.48);/* tertiary text */
  --t64: rgba(0, 0, 0, 0.64);
  --line: rgba(0, 0, 0, 0.1);/* hairline separators (Apple uses these sparingly) */
  --dark-surface: #272729;   /* card on dark sections */
  --dark-surface-hi: #2a2a2d;
  --card-shadow: rgba(0, 0, 0, 0.22) 0 5px 30px 0;
  --content: 980px;          /* Apple's recurring max content width */

  --font-display: "SF Pro Display", "Inter", -apple-system, BlinkMacSystemFont,
    "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans SC",
    sans-serif;
  --font-text: "SF Pro Text", "Inter", -apple-system, BlinkMacSystemFont,
    "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans SC",
    sans-serif;
}

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

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

body {
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--near-black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--content); margin: 0 auto; padding: 0 22px; }

/* full-bleed section helper — each section is its own cinematic "scene" */
.section { width: 100%; }

/* ---------------------------------------------------------------- typography */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; }

.display {
  font-size: 56px;
  line-height: 1.07;
  letter-spacing: -0.28px;
  font-weight: 600;
}
.headline {
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: -0.4px;
  font-weight: 600;
}
.subhead {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.19;
  letter-spacing: 0.011em;
  font-weight: 400;
}
.eyebrow {
  font-family: var(--font-text);
  font-size: 14px;
  line-height: 1.29;
  letter-spacing: -0.224px;
  font-weight: 600;
  color: var(--blue);
  text-transform: none;
}
.tile-heading {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.14;
  letter-spacing: 0.007em;
  font-weight: 600;
}
.caption {
  font-size: 14px;
  line-height: 1.43;
  letter-spacing: -0.224px;
  color: var(--t80);
}

/* signature Apple inline link with chevron */
.chevron-link {
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  color: var(--link);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.chevron-link::after { content: "›"; font-size: 1.05em; line-height: 1; }
.on-dark .chevron-link { color: var(--link-bright); }

/* ---------------------------------------------------------------------- nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 48px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.nav-inner {
  max-width: 1024px;
  margin: 0 auto;
  height: 48px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--white);
}
.brand:hover { text-decoration: none; }
.brand img { height: 22px; width: auto; }
.brand .mark {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--white);
  display: inline-block;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--font-text);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
}
.nav-links a { color: rgba(255, 255, 255, 0.92); }
.nav-links a:hover { color: var(--white); text-decoration: none; }
.nav-cta { display: flex; align-items: center; gap: 12px; }

/* ------------------------------------------------------------------ buttons */
.btn {
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.022em;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 980px;          /* signature Apple pill */
  padding: 11px 22px;
  transition: opacity 0.18s ease, background 0.18s ease, color 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { opacity: 0.9; color: var(--white); }

.btn-ghost { background: transparent; color: var(--link); border-color: transparent; }
.btn-ghost:hover { text-decoration: underline; }

/* outlined pill — "Learn more" on light bg */
.btn-outline {
  background: transparent;
  color: var(--link);
  border-color: var(--link);
}
.btn-outline:hover { background: var(--link); color: var(--white); }

/* outlined pill on dark bg */
.on-dark .btn-outline {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.55);
}
.on-dark .btn-outline:hover {
  background: var(--white);
  color: var(--near-black);
}

/* compact nav pill */
.btn-sm { font-size: 14px; padding: 7px 16px; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ------------------------------------------------------------------ hero */
/* Two states (Shopify image-banner pattern):
   · WITH photo  → full-bleed image + white text + light uniform overlay
   · NO photo    → clean LIGHT scheme + dark text (Shopify no-image default) */
.hero { position: relative; display: flex; overflow: hidden; isolation: isolate; }
.hero-inner { width: 100%; padding: 0 22px; }
.hero h1 { margin-bottom: 14px; max-width: 15ch; }
.hero .subhead { max-width: 52ch; margin: 0 0 28px; }
.hero-cta { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }

/* WITH photo — image is the stage, copy overlays it */
.hero--media { min-height: 86vh; align-items: flex-end; color: var(--white); }
.hero--media .hero-inner { padding-bottom: 76px; text-shadow: 0 1px 18px rgba(0, 0, 0, 0.3); }
.hero-media { position: absolute; inset: 0; z-index: -2; }
.hero-img { width: 100%; height: 100%; object-fit: cover; }
.hero--media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.3);
}
.hero--media .eyebrow { color: #fff; opacity: 0.82; margin-bottom: 16px; }
.hero--media h1 { color: var(--white); }
.hero--media .subhead { color: var(--white); opacity: 0.92; }
.hero--media .chevron-link { color: #fff; }

/* NO photo — clean light hero (most sellers land here); layout identical to photo hero */
.hero--plain {
  min-height: 86vh;
  align-items: flex-end;
  background: var(--white);
  color: var(--near-black);
}
.hero--plain .hero-inner { padding-bottom: 76px; }
.hero--plain .eyebrow { color: var(--blue); margin-bottom: 16px; }
.hero--plain h1 { color: var(--near-black); }
.hero--plain .subhead { color: var(--t64); }
.hero--plain .chevron-link { color: var(--link); }
.hero--plain .trust-strip { border-top-color: var(--line); }
.hero--plain .trust-strip .lbl { color: var(--t48); }
.hero--plain .trust-strip .items { color: var(--t64); }

/* trade trust strip below hero */
.trust-strip {
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.trust-strip .lbl {
  font-size: 12px;
  letter-spacing: -0.08px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 16px;
}
.trust-strip .items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 34px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
}

/* ------------------------------------------------------- generic sections */
.scene { padding: 96px 0; }
.scene.light { background: var(--gray-bg); color: var(--near-black); }
.scene.white { background: var(--white); color: var(--near-black); }
.scene.dark { background: var(--black); color: var(--white); }
.scene.dark .scene-head h2,
.scene.dark .scene-head p { color: var(--white); }

.scene-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.scene-head .eyebrow { display: block; margin-bottom: 12px; }
.scene-head h2 { margin-bottom: 14px; }
.scene-head p { font-size: 19px; line-height: 1.42; letter-spacing: -0.022em; color: var(--t64); }

/* ------------------------------------------------------- capability tiles */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature {
  background: var(--white);
  border-radius: 18px;
  padding: 40px 32px;
  text-align: center;
  box-shadow: var(--card-shadow);
}
.scene.white .feature { background: var(--gray-bg); }
.feature .ic {
  width: 56px; height: 56px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: rgba(0, 113, 227, 0.1);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
}
.feature .ic svg { width: 28px; height: 28px; }
.feature .tile-heading { margin-bottom: 10px; }
.feature p { font-size: 15px; line-height: 1.45; letter-spacing: -0.016em; color: var(--t64); }

/* ----------------------------------------------------------- product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px 24px;
}
/* editorial retail card — borderless, photography forward */
.product-card {
  display: flex;
  flex-direction: column;
  color: var(--near-black);
}
.product-card:hover { text-decoration: none; }
.product-stage {
  aspect-ratio: 3 / 4;
  border-radius: 14px;
  background: var(--gray-bg);
  position: relative;
  overflow: hidden;
}
/* primary + rollover second image stacked, both cover the 3:4 field */
.product-stage .pc-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, opacity 0.45s ease;
}
.product-stage .pc-img-2 { opacity: 0; }
.product-card:hover .pc-img { transform: scale(1.03); }
.product-card:hover .pc-img-2 { opacity: 1; }
/* clean neutral no-image placeholder (D5 — solid, not orb/blob) */
.product-stage .ph { position: absolute; inset: 0; background: var(--gray-bg); }
.product-stage .ph::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1.5px solid rgba(0, 0, 0, 0.12);
}
.product-body { padding: 16px 2px 2px; display: flex; flex-direction: column; }
.product-body .tile-heading { font-size: 19px; margin-bottom: 3px; }
.product-body p {
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: -0.012em;
  color: var(--t64);
  margin: 4px 0 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-body .chevron-link { display: none; }

/* empty state */
.empty {
  text-align: center;
  padding: 56px 0;
}
.empty p { font-size: 19px; color: var(--t64); margin-bottom: 22px; }

/* ------------------------------------------------------- showcase (split) */
.showcase {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.showcase .copy .eyebrow { display: block; margin-bottom: 12px; }
.showcase .copy h2 { margin-bottom: 16px; }
.showcase .copy p { font-size: 19px; line-height: 1.5; letter-spacing: -0.022em; color: var(--t64); margin-bottom: 12px; }
.showcase-stage {
  aspect-ratio: 1 / 1;
  border-radius: 24px;
  background: var(--gray-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.showcase-stage img { width: 100%; height: 100%; object-fit: cover; }
/* clean neutral panel when no distinct product image (D5) */
.showcase-ph { width: 100%; height: 100%; background: var(--gray-bg); position: relative; }
.showcase-ph::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 26%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1.5px solid rgba(0, 0, 0, 0.1);
}

/* spec strip — checklist of trade capabilities */
.spec-list { list-style: none; margin-top: 18px; }
.spec-list li {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 10px 0; border-top: 1px solid var(--line);
  font-size: 16px; color: var(--near-black);
}
.spec-list li:first-child { border-top: none; }
.spec-list li::before {
  content: ""; flex: none; margin-top: 6px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--blue);
}

/* ------------------------------------------------------------ final CTA */
.final {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.final .eyebrow { display: block; margin-bottom: 14px; }
.final h2 { margin-bottom: 16px; }
.final p { font-size: 19px; line-height: 1.5; letter-spacing: -0.022em; color: var(--t64); margin-bottom: 28px; }
.scene.dark .final p { color: rgba(255, 255, 255, 0.78); }
.final-cta { display: flex; gap: 26px; justify-content: center; align-items: center; flex-wrap: wrap; }

/* ------------------------------------------------------------- page head */
.page-head {
  background: var(--gray-bg);
  text-align: center;
  padding: 84px 0 64px;
}
.page-head .crumb {
  font-size: 14px; letter-spacing: -0.224px; color: var(--t48);
  margin-bottom: 18px;
}
.page-head .crumb a { color: var(--t48); }
.page-head .crumb a:hover { color: var(--near-black); }
.page-head .eyebrow { display: block; margin-bottom: 12px; }
.page-head h1 { margin-bottom: 16px; }
.page-head p { font-size: 19px; line-height: 1.42; letter-spacing: -0.022em; color: var(--t64); max-width: 620px; margin: 0 auto; }

/* ------------------------------------------------------- pager (list page) */
.pager { display: flex; justify-content: center; gap: 16px; margin-top: 56px; }
.pager-nums { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: center; }
.pager-num { min-width: 44px; padding: 10px 14px; justify-content: center; }
.pager-num.is-current { background: var(--blue); color: var(--white); border-color: var(--blue); pointer-events: none; }
.pager-gap { color: var(--t48); font-size: 13px; padding: 0 2px; user-select: none; }

/* -------------------------------------------------------- product detail */
.detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
}
.detail-stage {
  aspect-ratio: 4 / 3;
  max-height: 420px;
  border-radius: 24px;
  background: var(--gray-bg);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.detail-stage img { width: 100%; height: 100%; object-fit: cover; }
/* deliberate, restrained no-image placeholder — icon + company label */
.detail-stage .stage-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--t48);
}
.detail-stage .stage-empty span {
  font-size: 13px;
  letter-spacing: -0.08px;
  color: var(--t48);
}
.detail .copy .eyebrow { display: block; margin-bottom: 12px; }
.detail .copy h1 { margin-bottom: 16px; }
.detail .copy .lead { font-size: 19px; line-height: 1.5; letter-spacing: -0.022em; color: var(--t64); margin-bottom: 28px; }
.detail .cta-row { display: flex; gap: 26px; align-items: center; flex-wrap: wrap; margin-top: 28px; }

/* spec table */
.spec-table {
  border-radius: 16px;
  background: var(--gray-bg);
  overflow: hidden;
}
.spec-table .srow {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 22px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  font-size: 16px;
}
.spec-table .srow:first-child { border-top: none; }
.spec-table .k { color: var(--t64); }
.spec-table .v { color: var(--near-black); font-weight: 600; text-align: right; }

/* shown only when a product has no structured specs — low-key info card */
.spec-note {
  background: var(--gray-bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.016em;
  color: var(--t64);
}

/* --------------------------------------------------- gallery (thumbnail row) */
.gallery {
  min-width: 0;
}
.thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.thumb {
  width: 66px;
  height: 66px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--gray-bg);
  cursor: pointer;
  transition: 0.15s ease;
}
.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.thumb:hover {
  border-color: var(--blue);
}
.thumb.active {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

/* ------------------------------------------------------------- price block */
.price-ladder,
.price-variant {
  width: 100%;
  margin: 22px 0 26px;
  border-radius: 16px;
  background: var(--gray-bg);
  border-collapse: collapse;
  overflow: hidden;
  font-size: 15px;
}
.price-ladder th,
.price-variant th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--t48);
  padding: 12px 22px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.price-ladder th:last-child,
.price-variant th:last-child {
  text-align: right;
}
.price-ladder td,
.price-variant td {
  padding: 13px 22px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  color: var(--near-black);
  font-weight: 400;
}
.price-ladder td:first-child,
.price-variant td:first-child {
  color: var(--t64);
}
.price-ladder td:last-child,
.price-variant td:last-child {
  text-align: right;
  font-weight: 600;
  color: var(--blue);
}
.price-ladder tr:last-child td,
.price-variant tr:last-child td {
  border-bottom: none;
}
.price-range {
  margin: 22px 0 26px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--blue);
}
.price-inquire {
  display: inline-flex;
  align-items: center;
  margin: 22px 0 26px;
  padding: 10px 18px;
  border-radius: 980px;
  background: rgba(0, 113, 227, 0.1);
  font-size: 15px;
  font-weight: 400;
  color: var(--blue);
}

/* --------------------------------------------------- certification chips */
.cert-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--gray-bg);
  font-size: 13px;
  font-weight: 500;
  color: var(--t80);
}

/* -------------------------- trade facts (MOQ / lead time / customization) */
.facts {
  margin: 0 0 30px;
  border-radius: 16px;
  background: var(--gray-bg);
  overflow: hidden;
}
.facts:empty {
  display: none;
}
.fact {
  display: flex;
  gap: 16px;
  padding: 14px 22px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  font-size: 15px;
}
.fact:first-child {
  border-top: none;
}
.fact-k {
  flex: 0 0 108px;
  color: var(--t64);
  font-weight: 400;
}
.fact-v {
  color: var(--near-black);
  font-weight: 600;
  /* 与 .spec-table .v 同规则：值列右对齐，数字不悬在行中 */
  margin-left: auto;
  text-align: right;
}

/* ── Save to inquiry list（收藏协议 fav-btn）────────────────── */
.fav-btn-card {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  color: var(--t64);
  cursor: pointer;
  transition: color 0.18s ease, transform 0.18s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}
.fav-btn-card:hover {
  color: var(--blue);
  transform: scale(1.06);
}
.fav-btn-card.is-active {
  color: var(--blue);
}
.fav-btn-card.is-active svg {
  fill: var(--blue);
  stroke: var(--blue);
}
.fav-btn-detail {
  gap: 8px;
}
.fav-btn-detail.is-active svg {
  fill: currentColor;
}
.fav-btn .fav-label-added {
  display: none;
}
.fav-btn.is-active .fav-label-add {
  display: none;
}
.fav-btn.is-active .fav-label-added {
  display: inline;
}

/* ── 商品详情页（detail-rich 富文本）───────────────────────── */
/* 卖家自撰长文 —— 按「好读的文章」排版（measure 收到 ~70ch），
   不套营销区块那套零售调性。 */
.detail-rich {
  max-width: 72ch;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -0.022em;
  color: var(--t80);
}
.detail-rich h1,
.detail-rich h2,
.detail-rich h3 {
  font-family: var(--font-display);
  color: var(--near-black);
  font-weight: 600;
  margin: 36px 0 14px;
}
.detail-rich h1 {
  font-size: 32px;
  letter-spacing: -0.24px;
}
.detail-rich h2 {
  font-size: 28px;
  letter-spacing: -0.2px;
}
.detail-rich h3 {
  font-size: 21px;
  letter-spacing: -0.1px;
}
.detail-rich p {
  margin: 0 0 16px;
}
.detail-rich img {
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  display: block;
  margin: 28px auto;
}
.detail-rich ul,
.detail-rich ol {
  margin: 0 0 16px;
  padding-left: 24px;
}
.detail-rich li {
  margin-bottom: 8px;
}
.detail-rich hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}
.detail-rich a {
  color: var(--link);
}
.detail-rich table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.detail-rich th,
.detail-rich td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: 12px 16px;
  text-align: left;
}
.detail-rich th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--t48);
}
.detail-rich blockquote {
  margin: 24px 0;
  padding: 14px 22px;
  border-left: 3px solid var(--blue);
  background: var(--gray-bg);
  border-radius: 0 16px 16px 0;
}

/* ------------------------------------------------------- product card price */
.card-price {
  display: block;
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--blue);
}

/* ----------------------------------------------------------- contact page */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.contact-card {
  background: var(--gray-bg);
  border-radius: 18px;
  padding: 34px 30px;
}
.contact-card h4 {
  font-family: var(--font-text);
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--t48);
  margin-bottom: 12px;
}
.contact-card a { font-size: 21px; font-family: var(--font-display); font-weight: 600; color: var(--link); letter-spacing: -0.01em; }
.contact-card p { font-size: 17px; color: var(--near-black); }
.contact-card .btn { margin-top: 14px; }

/* about prose */
.prose { max-width: 700px; }
.prose p { font-size: 19px; line-height: 1.6; letter-spacing: -0.022em; color: var(--near-black); margin-bottom: 20px; }

/* --------------------------------------------------------------- footer */
.footer {
  background: var(--gray-bg);
  padding: 56px 0 40px;
  color: var(--t64);
  font-size: 12px;
}
.footer .cols {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}
.footer .brand { color: var(--near-black); font-size: 19px; }
.footer .brand .mark { background: var(--near-black); }
.footer .desc { margin-top: 14px; font-size: 13px; line-height: 1.5; color: var(--t64); max-width: 320px; }
.footer h5 {
  font-family: var(--font-text);
  font-size: 12px; font-weight: 600; color: var(--near-black);
  margin-bottom: 14px; letter-spacing: -0.08px;
}
.footer .col a, .footer .col span { display: block; font-size: 13px; color: var(--t64); margin-bottom: 10px; }
.footer .col a:hover { color: var(--near-black); }
.footer .legal {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding-top: 24px; font-size: 12px; color: var(--t48); letter-spacing: -0.12px;
}

/* --------------------------------------------------------------- responsive */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
}
@media (max-width: 834px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase, .detail { grid-template-columns: 1fr; gap: 36px; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .display { font-size: 40px; letter-spacing: -0.2px; }
  .headline { font-size: 32px; }
  .scene, .hero { padding: 64px 0; }
  .scene-head { margin-bottom: 40px; }
  .feature-grid, .product-grid, .contact-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .hero-cta, .final-cta { gap: 18px; }
}
@media (max-width: 400px) {
  .display { font-size: 34px; }
  .footer .cols { grid-template-columns: 1fr; }
}

/* respect reduced-motion: keep rollover functional but drop animation */
@media (prefers-reduced-motion: reduce) {
  .pc-img { transition: none; }
  .product-card:hover .pc-img { transform: none; }
  .lookbook .lb-cell:hover img { transform: none; }
  .detail-stage .main-img { transition: none; }
  .lightbox { animation: none; }
}

/* ------------------------- collapsible rows（Shopify Dawn collapsible row 范式）
   规格 / 认证 / 交易条款折叠；价格与询盘 CTA 始终常显（Dawn 明确规矩）。
   原生 <details>，无 JS 也能展开。 */
.acc {
  border-top: 1px solid var(--line);
  margin: 0;
}
.acc:last-of-type { border-bottom: 1px solid var(--line); }
.acc-sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 2px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--near-black);
  cursor: pointer;
  list-style: none;
}
.acc-sum::-webkit-details-marker { display: none; }
.acc-sum::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 1.6px solid var(--t48);
  border-bottom: 1.6px solid var(--t48);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.2s ease;
}
.acc[open] > .acc-sum::after { transform: rotate(-135deg) translate(-2px, -2px); }
.acc-sum:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.acc-body { padding: 0 0 18px; }
/* 折叠体内的既有组件去掉自身外边距，交给 .acc-body 统一控 */
.acc-body .spec-table,
.acc-body .cert-chips,
.acc-body .facts { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  .acc-sum::after { transition: none; }
}

/* ---------------------------- product detail gallery: crossfade + lightbox */
.detail-stage .main-img { transition: opacity 0.18s ease; cursor: zoom-in; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  animation: lb-in 0.2s ease;
  cursor: zoom-out;
}
@keyframes lb-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 12px;
}
.lightbox-close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.18s ease;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.26); }
.lightbox-close:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* ══════════════ Task 4 陈列区块（lookbook / testimonial / press / promo）══════════════ */
/* 外壳 section[id] 恒渲染，内部 gate 无内容时整段不渲染 → section 0 高度收起 */

/* ------------------------------------------------------- lookbook (collage) */
.lookbook {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 14px;
}
.lookbook .lb-cell {
  display: block;
  border-radius: 16px;
  overflow: hidden;
  background: var(--gray-bg);
  aspect-ratio: 4 / 5;
}
.lookbook .lb-cell:first-child {
  grid-row: span 2;
  aspect-ratio: auto;
}
.lookbook .lb-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.lookbook .lb-cell:hover img { transform: scale(1.04); }

/* ------------------------------------------------------------ testimonial */
.testimonial { max-width: 760px; margin: 0 auto; text-align: center; }
.testimonial .tq {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.28;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--near-black);
  margin-bottom: 24px;
}
.testimonial .tname { display: block; font-size: 15px; font-weight: 600; color: var(--near-black); }
.testimonial .trole { display: block; font-size: 14px; color: var(--t64); margin-top: 2px; }

/* ------------------------------------------------------- press / logo row */
.press-strip { text-align: center; }
.press-strip .press-lbl {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--t48);
  margin-bottom: 22px;
}
.press-row { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 18px 44px; }
.press-row span {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--t48);
}

/* --------------------------------------------------------------- promo band */
.promo-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  background: var(--gray-bg);
  border-radius: 24px;
  padding: 48px 52px;
}
.promo-band .promo-copy { max-width: 60ch; }
.promo-band .promo-copy .headline { margin: 6px 0 8px; }
.promo-band .promo-copy p { font-size: 17px; line-height: 1.5; color: var(--t64); }
.promo-band .btn { flex: none; }

@media (max-width: 834px) {
  .lookbook { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .lookbook { grid-template-columns: 1fr; }
  .lookbook .lb-cell:first-child { grid-row: auto; aspect-ratio: 4 / 5; }
  .promo-band { padding: 34px 28px; }
}