/* ══════════════════════════════════════════════════════════════════
   AIXON 艾享医疗科技 — 品牌官网设计系统
   Art Direction: Clinical Precision × Editorial Modernism
   Primary: Pantone 7466 C — #00B0B9
   ══════════════════════════════════════════════════════════════════ */

:root {
  /* ── Brand（Pantone 7466 C 色阶）───────────────────────────
     #00B0B9 为品牌主色，用于图形、插画、渐变与大型视觉元素；
     小号文字与可交互文本表面使用加深衍色以保证对比度。── */
  --brand:        #00B0B9;
  --brand-mid:    #009CA6;
  --brand-deep:   #00727B;
  --brand-strong: #005F66;
  --brand-soft:   #E1F6F7;
  --brand-mist:   #F3FAFB;
  --brand-glow:   rgba(0, 176, 185, 0.14);

  /* ── Ink / Neutrals ────────────────────────────────────── */
  --ink:    #10222B;
  --ink-2:  #3F5560;
  --ink-3:  #6F858F;
  --line:   #DDE9EC;
  --line-dark: rgba(255, 255, 255, 0.12);
  --bg:     #FFFFFF;
  --bg-alt: #F5FAFB;
  --dark:   #0B2731;
  --dark-2: #11333F;

  /* ── Typography ────────────────────────────────────────── */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-serif: "Georgia", "Times New Roman", "Songti SC", "STSong", serif;

  --fs-display: clamp(2.625rem, 5.6vw, 4.75rem);
  --fs-h1: clamp(2.25rem, 4.4vw, 3.5rem);
  --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
  --fs-h3: 1.25rem;
  --fs-lede: clamp(1.0625rem, 1.4vw, 1.25rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;
  --fs-overline: 0.75rem;

  /* ── Layout ────────────────────────────────────────────── */
  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(5rem, 10vw, 9rem);
  --header-h: 76px;

  /* ── Shape & Depth ─────────────────────────────────────── */
  --r-sm: 6px;
  --r: 12px;
  --r-lg: 20px;
  --shadow-card: 0 1px 2px rgba(12,34,42, 0.04);
  --shadow-lift: 0 24px 60px -24px rgba(0,114,123, 0.22);
  --shadow-pop: 0 32px 80px -32px rgba(12,34,42, 0.28);

  --ease: cubic-bezier(0.22, 0.61, 0.21, 1);
}

/* ── Reset / Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: var(--ink); }
strong { color: var(--ink); font-weight: 600; }
::selection { background: var(--brand-deep); color: #fff; }

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

/* ── Accessibility ───────────────────────────────────────── */
.skip-link {
  position: absolute; left: 1rem; top: -100%;
  background: var(--ink); color: #fff;
  padding: 0.6rem 1.2rem; border-radius: var(--r-sm);
  z-index: 200; transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 2px; }

/* ── Layout primitives ───────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-wide { max-width: 1360px; }
.section { padding-block: var(--section-y); position: relative; }
.section-alt { background: var(--bg-alt); }
.section-line { border-top: 1px solid var(--line); }

.grid { display: grid; gap: 1.5rem; }
@media (min-width: 700px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 700px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }

.split { display: grid; gap: 3rem; align-items: center; }
@media (min-width: 1024px) {
  .split { grid-template-columns: 1fr 1fr; gap: clamp(3rem, 6vw, 6rem); }
  .split-45 { grid-template-columns: 0.9fr 1.1fr; }
  .split-55 { grid-template-columns: 1.1fr 0.9fr; }
}

/* ── Type utilities ──────────────────────────────────────── */
.overline {
  display: inline-flex; align-items: center; gap: 0.625rem;
  font-size: var(--fs-overline); font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--brand-deep);
}
.overline::before {
  content: ""; width: 24px; height: 1px; background: var(--brand);
}
.overline .idx { color: var(--ink-3); letter-spacing: 0.1em; }

.display { font-size: var(--fs-display); line-height: 1.06; letter-spacing: -0.03em; }
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); letter-spacing: -0.01em; }
.lede { font-size: var(--fs-lede); line-height: 1.8; color: var(--ink-2); }
.small { font-size: var(--fs-small); }
.muted { color: var(--ink-3); }
.serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; }
.text-brand { color: var(--brand-mid); }

.section-head { max-width: 720px; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-head .overline { margin-bottom: 1.25rem; }
.section-head .h2 { margin-bottom: 1.25rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .overline { justify-content: center; }
.section-head.center .overline::before { display: none; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.01em;
  border-radius: var(--r-sm);
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-deep); color: #fff;
  box-shadow: 0 12px 28px -12px rgba(0,176,185, 0.55);
}
.btn-primary:hover { background: var(--brand-strong); transform: translateY(-2px); box-shadow: 0 18px 36px -14px rgba(0,176,185, 0.6); }
.btn-ghost {
  border: 1px solid var(--line); color: var(--ink); background: transparent;
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-deep); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--brand-deep); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-pop); }
.btn .arr { transition: transform 0.3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: var(--fs-small); font-weight: 600; color: var(--brand-deep);
}
.link-arrow .arr { transition: transform 0.3s var(--ease); }
.link-arrow:hover .arr { transform: translateX(5px); }
.link-arrow:hover { color: var(--brand-strong); }

/* ── Header ──────────────────────────────────────────────── */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 8px 32px -16px rgba(12,34,42, 0.12); }
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.brand-mark { display: inline-flex; align-items: center; gap: 0.75rem; }
.brand-mark .logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-mark .logo-cn { font-size: 1.25rem; font-weight: 700; color: var(--ink); letter-spacing: 0.02em; }
.brand-mark .logo-en { font-size: 0.625rem; font-weight: 600; letter-spacing: 0.34em; color: var(--ink-3); text-transform: uppercase; }

.main-nav { display: none; align-items: center; gap: 2.25rem; }
@media (min-width: 1024px) { .main-nav { display: flex; } }
.nav-link {
  position: relative; font-size: var(--fs-small); font-weight: 500; color: var(--ink-2);
  padding: 0.35rem 0; transition: color 0.25s;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 2px; background: var(--brand);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--ink); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }
.header-cta { display: none; align-items: center; gap: 1rem; }
@media (min-width: 1024px) { .header-cta { display: flex; } }

.menu-toggle { display: inline-flex; padding: 0.5rem; color: var(--ink); }
@media (min-width: 1024px) { .menu-toggle { display: none; } }

.mobile-menu {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  padding: 2rem var(--gutter);
  display: flex; flex-direction: column; gap: 0.25rem;
  transform: translateY(-8px); opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
}
.mobile-menu.open { transform: none; opacity: 1; pointer-events: auto; }
.mobile-menu a {
  padding: 1rem 0.5rem; font-size: 1.25rem; font-weight: 600; color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 1.5rem; }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(3.5rem, 8vw, 7rem));
  padding-bottom: clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(640px 480px at 82% 18%, var(--brand-glow), transparent 65%),
    radial-gradient(480px 380px at 8% 85%, rgba(0,176,185, 0.07), transparent 60%);
}
.bg-grid { position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 30%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 90% 70% at 60% 30%, #000 0%, transparent 70%);
  opacity: 0.55;
}
.hero .display { margin: 1.5rem 0 1.75rem; }
.hero .lede { max-width: 34rem; margin-bottom: 2.5rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero-art { position: relative; }
.hero-art .art-frame {
  position: relative; border: 1px solid var(--line); border-radius: var(--r-lg);
  background: linear-gradient(160deg, #fff 0%, var(--brand-mist) 100%);
  box-shadow: var(--shadow-lift);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

/* ── Trust bar / stats ───────────────────────────────────── */
.trust-bar { border-top: 1px solid var(--line); }
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 900px) { .stat-grid { grid-template-columns: repeat(4, 1fr); } }
.stat {
  padding: clamp(1.75rem, 3vw, 2.75rem) clamp(1.25rem, 2.5vw, 2.5rem);
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; }
@media (max-width: 899px) { .stat:nth-child(3) { border-left: 0; } .stat:nth-child(n+3) { border-top: 1px solid var(--line); } }
.stat .num {
  font-size: clamp(1.875rem, 3.4vw, 2.75rem); font-weight: 700; letter-spacing: -0.03em;
  color: var(--ink); line-height: 1.1;
}
.stat .num em { font-style: normal; color: var(--brand-mid); }
.stat .lbl { margin-top: 0.5rem; font-size: var(--fs-small); color: var(--ink-3); }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--r);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.card:hover { transform: translateY(-5px); border-color: rgba(0,176,185, 0.45); box-shadow: var(--shadow-lift); }
.card .icon-chip {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--brand-soft); color: var(--brand-deep);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem; transition: transform 0.4s var(--ease);
}
.card:hover .icon-chip { transform: scale(1.08) rotate(-3deg); }
.card h3 { margin-bottom: 0.75rem; }
.card p { font-size: var(--fs-small); }
.card .card-foot { margin-top: 1.5rem; }

/* Numbered card variant (process steps) */
.step-card .step-num {
  font-family: var(--font-serif); font-style: italic;
  font-size: 2.5rem; line-height: 1; color: var(--brand-mid);
  display: block; margin-bottom: 1.25rem;
}

/* ── Bento ───────────────────────────────────────────────── */
.bento { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 900px) {
  .bento { grid-template-columns: repeat(6, 1fr); }
  .bento .span-3 { grid-column: span 3; }
  .bento .span-4 { grid-column: span 4; }
  .bento .span-2 { grid-column: span 2; }
  .bento .span-6 { grid-column: span 6; }
}
.bento .cell {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--bg); padding: clamp(1.75rem, 3vw, 2.5rem);
  transition: border-color 0.4s, box-shadow 0.4s, transform 0.4s var(--ease);
}
.bento .cell:hover { border-color: rgba(0,176,185, 0.45); box-shadow: var(--shadow-lift); transform: translateY(-4px); }
.cell .tag {
  display: inline-block; font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--brand-deep);
  background: var(--brand-soft); border-radius: 999px;
  padding: 0.3rem 0.8rem; margin-bottom: 1.25rem;
}
.cell h3 { margin-bottom: 0.625rem; }
.cell p { font-size: var(--fs-small); }

/* ── Dark section ────────────────────────────────────────── */
.section-dark {
  position: relative; background: var(--dark); color: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}
.section-dark::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(720px 420px at 85% 10%, rgba(0,176,185, 0.28), transparent 60%),
    radial-gradient(560px 420px at 5% 95%, rgba(0,176,185, 0.16), transparent 55%);
}
.section-dark > .container { position: relative; }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark strong { color: #fff; }
.section-dark .overline { color: #8FE3E8; }
.section-dark .overline::before { background: #8FE3E8; }
.section-dark .lede { color: rgba(255, 255, 255, 0.66); }
.section-dark .card { background: rgba(255, 255, 255, 0.045); border-color: var(--line-dark); }
.section-dark .card:hover { border-color: rgba(183, 174, 245, 0.5); box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.5); }
.section-dark .card p { color: rgba(255, 255, 255, 0.62); }
.section-dark .icon-chip { background: rgba(0,176,185, 0.22); color: #A8EAEE; }

/* ── Product cards ───────────────────────────────────────── */
.product-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  background: var(--bg);
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.product-card:hover { transform: translateY(-6px); border-color: rgba(0,176,185, 0.5); box-shadow: var(--shadow-lift); }
.product-art {
  position: relative; aspect-ratio: 4 / 3;
  background:
    radial-gradient(70% 70% at 50% 42%, #fff 0%, var(--brand-mist) 100%);
  display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--line);
}
.product-art svg { width: 58%; height: auto; color: var(--brand-deep); transition: transform 0.5s var(--ease); }
.product-card:hover .product-art svg { transform: scale(1.06); }
.product-art .corner-tag {
  position: absolute; top: 1rem; left: 1rem;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--brand-deep); background: rgba(255, 255, 255, 0.85); border: 1px solid var(--line);
  padding: 0.28rem 0.7rem; border-radius: 999px;
}
.product-art .badge-new {
  position: absolute; top: 1rem; right: 1rem;
  font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.1em;
  color: #fff; background: var(--brand-deep); padding: 0.28rem 0.7rem; border-radius: 999px;
}
.product-body { padding: 1.5rem 1.75rem 1.75rem; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 1.125rem; margin-bottom: 0.25rem; }
.product-body .p-cn { font-size: var(--fs-small); color: var(--ink-3); margin-bottom: 1rem; }
.spec-list { margin-top: auto; padding-top: 1rem; border-top: 1px dashed var(--line); }
.spec-list li {
  display: flex; justify-content: space-between; gap: 1rem;
  font-size: 0.8125rem; padding: 0.3rem 0;
}
.spec-list li span:first-child { color: var(--ink-3); }
.spec-list li span:last-child { color: var(--ink); font-weight: 500; text-align: right; }

/* ── Category filter chips (static anchors) ──────────────── */
.chip-row { display: flex; flex-wrap: wrap; gap: 0.625rem; }
.chip {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.55rem 1.15rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg);
  font-size: var(--fs-small); font-weight: 500; color: var(--ink-2);
  transition: all 0.25s var(--ease);
}
.chip:hover { border-color: var(--brand); color: var(--brand-deep); }
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  padding: 1.5rem 0.25rem; cursor: pointer; list-style: none;
  font-size: 1.0625rem; font-weight: 600; color: var(--ink);
  transition: color 0.25s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--brand-deep); }
.faq-item summary .fx {
  flex: none; width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--line); display: flex; align-items: center; justify-content: center;
  transition: all 0.3s var(--ease);
}
.faq-item summary .fx svg { transition: transform 0.3s var(--ease); }
.faq-item[open] summary { color: var(--brand-deep); }
.faq-item[open] summary .fx { background: var(--brand); border-color: var(--brand); color: #fff; }
.faq-item[open] summary .fx svg { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 3.5rem 1.75rem 0.25rem; font-size: var(--fs-small); color: var(--ink-2); max-width: 56rem; }

/* ── Forms ───────────────────────────────────────────────── */
.form-grid { display: grid; gap: 1.25rem; }
@media (min-width: 700px) { .form-grid { grid-template-columns: 1fr 1fr; } .form-grid .full { grid-column: 1 / -1; } }
.field label {
  display: block; font-size: 0.8125rem; font-weight: 600; color: var(--ink);
  margin-bottom: 0.5rem; letter-spacing: 0.02em;
}
.field label .req { color: var(--brand); }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.875rem 1rem;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: #fff; font-size: var(--fs-small);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0,176,185, 0.16);
}
.field ::placeholder { color: var(--ink-3); }
.form-note { font-size: 0.8125rem; color: var(--ink-3); }
.form-success {
  display: none; padding: 1rem 1.25rem; border-radius: var(--r-sm);
  background: var(--brand-soft); color: var(--brand-deep);
  font-size: var(--fs-small); font-weight: 600;
}
.form-success.show { display: block; }

/* ── Breadcrumb ──────────────────────────────────────────── */
.breadcrumb { padding-top: calc(var(--header-h) + 1.75rem); }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; font-size: 0.8125rem; color: var(--ink-3); }
.breadcrumb a { color: var(--ink-3); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--brand-deep); }
.breadcrumb li[aria-current] { color: var(--ink); font-weight: 500; }
.breadcrumb .sep { color: var(--line); }

.page-hero { padding-block: clamp(2.5rem, 6vw, 5rem) clamp(3rem, 6vw, 5rem); position: relative; overflow: hidden; }
.page-hero .h1 { margin: 1.25rem 0 1.25rem; max-width: 20ch; }
.page-hero .lede { max-width: 42rem; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.6); position: relative; overflow: hidden; }
.site-footer::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(800px 300px at 80% 0%, rgba(0,176,185, 0.2), transparent 60%);
}
.footer-main {
  position: relative;
  display: grid; gap: 3rem;
  padding-block: clamp(3.5rem, 7vw, 5.5rem) clamp(2.5rem, 4vw, 3.5rem);
}
@media (min-width: 900px) { .footer-main { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
.footer-brand .brand-mark .logo-cn { color: #fff; }
.footer-brand .brand-mark .logo-en { color: rgba(255, 255, 255, 0.45); }
.footer-brand p { margin-top: 1.5rem; font-size: var(--fs-small); max-width: 22rem; }
.footer-col h4 {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42); margin-bottom: 1.25rem;
}
.footer-col ul { display: grid; gap: 0.7rem; font-size: var(--fs-small); }
.footer-col a { transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-cert { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; }
.footer-cert span {
  font-size: 0.6875rem; letter-spacing: 0.06em;
  border: 1px solid var(--line-dark); border-radius: 999px; padding: 0.28rem 0.7rem;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  position: relative; border-top: 1px solid var(--line-dark);
  padding-block: 1.75rem;
  display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between;
  font-size: 0.8125rem; color: rgba(255, 255, 255, 0.4);
}
.footer-bottom nav { display: flex; gap: 1.5rem; }
.footer-bottom a:hover { color: #fff; }

/* ── CTA band ────────────────────────────────────────────── */
.cta-band { position: relative; overflow: hidden; }
.cta-inner {
  position: relative; border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand) 60%, #3FCBD2 100%);
  padding: clamp(2.75rem, 6vw, 5rem);
  color: #fff; overflow: hidden;
}
.cta-inner::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(420px 300px at 88% 12%, rgba(255, 255, 255, 0.18), transparent 60%);
}
.cta-inner > * { position: relative; }
.cta-inner h2 { color: #fff; font-size: var(--fs-h2); margin-bottom: 1rem; max-width: 22ch; }
.cta-inner p { color: rgba(255, 255, 255, 0.82); max-width: 34rem; margin-bottom: 2rem; }

/* ── Hub / map panel ─────────────────────────────────────── */
.hub-card { display: flex; flex-direction: column; gap: 0.35rem; }
.hub-card .hub-city { font-size: 1.125rem; font-weight: 700; color: var(--ink); display: flex; align-items: baseline; gap: 0.625rem; }
.hub-card .hub-city small { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; color: var(--brand-deep); text-transform: uppercase; }
.hub-card .hub-role { font-size: var(--fs-small); color: var(--ink-2); }
.hub-card .hub-meta { font-size: 0.8125rem; color: var(--ink-3); margin-top: 0.5rem; padding-top: 0.75rem; border-top: 1px dashed var(--line); }

/* ── Reveal animation (no-js safe) ───────────────────────── */
html.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); transition-delay: var(--d, 0ms); }
html.js .reveal.in { opacity: 1; transform: none; }
html.js .svg-draw [data-draw] { stroke-dasharray: 1400; stroke-dashoffset: 1400; transition: stroke-dashoffset 2.2s var(--ease) 0.2s; }
html.js .svg-draw.in [data-draw], html.js .in .svg-draw [data-draw] { stroke-dashoffset: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html.js .reveal { opacity: 1; transform: none; }
  html.js .svg-draw [data-draw] { stroke-dashoffset: 0; }
}

/* ── Photography（产品摄影图）────────────────────────────── */
.product-art img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.product-card:hover .product-art img { transform: scale(1.04); }
.hero-art .art-frame { overflow: hidden; }
.hero-art .art-frame img { display: block; width: 100%; height: auto; }

/* ── Misc ────────────────────────────────────────────────── */
.hr-line { border: 0; border-top: 1px solid var(--line); }
.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-row span {
  font-size: 0.75rem; font-weight: 500; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 0.8rem;
  background: #fff;
}
.check-list li {
  position: relative; padding-left: 1.75rem; margin-bottom: 0.75rem; font-size: var(--fs-small);
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 0.42em;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--brand-soft) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%2300727B" stroke-width="3.2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>') center/9px no-repeat;
}
.float-badge {
  position: absolute; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px);
  border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow-lift); padding: 0.875rem 1.25rem;
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.8125rem; font-weight: 600; color: var(--ink);
}
.float-badge small { display: block; font-weight: 500; color: var(--ink-3); }
.float-badge .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(0,176,185, 0.18); }