:root {
  --bg: #f6f9fc;
  --text: #102033;
  --muted: #64748b;
  --primary: #0878d8;
  --primary-dark: #075ea8;
  --accent: #16b8a6;
  --card: #ffffff;
  --line: rgba(15, 23, 42, .1);
  --shadow: 0 24px 70px rgba(15, 46, 80, .12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 70px);
  background: rgba(255,255,255,.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: #fff;
  font-weight: 800;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.brand strong, .brand em { display: block; line-height: 1.2; }
.brand em { color: var(--muted); font-size: 13px; font-style: normal; }
.site-nav { display: flex; align-items: center; gap: 26px; color: #334155; font-size: 15px; }
.site-nav a:hover { color: var(--primary); }
.nav-toggle { display: none; border: 0; background: transparent; font-size: 26px; color: var(--text); }

.section { padding: 86px clamp(20px, 6vw, 90px); }
.page-hero {
  background:
    radial-gradient(circle at 18% 20%, rgba(22,184,166,.16), transparent 28%),
    linear-gradient(135deg, #f1f8ff 0%, #fff 58%, #ecfbf7 100%);
}
.page-hero.dark-hero {
  color: #fff;
  background: linear-gradient(135deg, #0f2f57 0%, #0b78d0 100%);
}
.page-hero.dark-hero p { color: rgba(255,255,255,.78); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  align-items: center;
  gap: 36px;
  min-height: 640px;
  background:
    radial-gradient(circle at 15% 20%, rgba(22,184,166,.2), transparent 28%),
    linear-gradient(135deg, #ecf7ff 0%, #ffffff 52%, #e9fbf7 100%);
}
.scientific-hero {
  position: relative;
  overflow: hidden;
}
.scientific-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -38% 45%;
  height: 520px;
  background: radial-gradient(circle, rgba(8,120,216,.12), transparent 68%);
  pointer-events: none;
}
.lab-visual {
  position: relative;
  min-height: 420px;
}
.molecule {
  position: absolute;
  inset: 28px 32px auto auto;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(8,120,216,.18);
  border-radius: 999px;
  background:
    radial-gradient(circle at 28% 34%, var(--accent) 0 8px, transparent 9px),
    radial-gradient(circle at 62% 26%, var(--primary) 0 10px, transparent 11px),
    radial-gradient(circle at 68% 66%, #7dd3fc 0 8px, transparent 9px),
    radial-gradient(circle at 32% 72%, #38bdf8 0 7px, transparent 8px),
    linear-gradient(135deg, rgba(255,255,255,.62), rgba(255,255,255,.1));
  box-shadow: inset 0 0 70px rgba(8,120,216,.1);
}
.molecule::before,
.molecule::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 190px;
  height: 1px;
  background: rgba(8,120,216,.2);
  transform: translate(-50%, -50%) rotate(32deg);
}
.molecule::after { transform: translate(-50%, -50%) rotate(-38deg); }
.lab-card { position: absolute; border: 1px solid rgba(255,255,255,.48); box-shadow: var(--shadow); }
.main-card {
  left: 0;
  right: 32px;
  bottom: 44px;
  padding: 32px;
  color: #fff;
  border-radius: 30px;
  background: linear-gradient(145deg, #0b78d0, #0f2f57);
}
.main-card span { color: rgba(255,255,255,.72); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.main-card strong { display: block; margin-top: 18px; font-size: 28px; line-height: 1.2; }
.main-card p { color: rgba(255,255,255,.76); }
.mini-card {
  right: 0;
  top: 40px;
  z-index: 2;
  padding: 20px 24px;
  border-radius: 22px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
}
.mini-card strong { display: block; color: var(--primary); font-size: 34px; line-height: 1; }
.mini-card span { color: var(--muted); font-size: 13px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0; line-height: 1.18; }
h1 { max-width: 820px; font-size: clamp(38px, 6vw, 72px); letter-spacing: -.04em; }
h2 { font-size: clamp(30px, 4vw, 46px); letter-spacing: -.03em; }
h3 { font-size: 21px; }
p { color: var(--muted); }
.lead { max-width: 680px; margin: 24px 0 0; font-size: 20px; color: #42526a; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
}
.button.primary { color: #fff; background: var(--primary); box-shadow: 0 14px 30px rgba(8,120,216,.25); }
.button.primary:hover { background: var(--primary-dark); }
.button.ghost { color: var(--primary); background: #fff; border: 1px solid rgba(8,120,216,.2); }
.hero-card {
  padding: 34px;
  color: #fff;
  border-radius: 32px;
  background: linear-gradient(145deg, #0878d8, #0f2f57);
  box-shadow: var(--shadow);
}
.hero-card span { color: rgba(255,255,255,.72); font-weight: 700; }
.hero-card strong { display: block; margin-top: 34px; font-size: 32px; line-height: 1.25; }
.hero-card p { color: rgba(255,255,255,.78); }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 28px;
  padding-bottom: 28px;
  background: #fff;
}
.stats div { padding: 24px; border: 1px solid var(--line); border-radius: 20px; }
.stats strong { display: block; color: var(--primary); font-size: 36px; }
.stats span { color: var(--muted); }

.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
.split.reverse { grid-template-columns: 1.1fr .9fr; }
.cards { display: grid; gap: 18px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }
.card, .panel, .timeline, .order, .contact {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 44px rgba(15, 46, 80, .06);
}
.card { padding: 26px; }
.product-card { position: relative; overflow: hidden; }
.product-card::after {
  content: "";
  position: absolute;
  right: -38px;
  top: -38px;
  width: 96px;
  height: 96px;
  border-radius: 999px;
  background: rgba(8,120,216,.08);
}
.card.light { background: rgba(255,255,255,.9); }
.icon { display: inline-block; margin-bottom: 18px; font-size: 34px; }
.band { background: linear-gradient(180deg, #0f2f57 0%, #123f70 100%); }
.band h2, .band h3 { color: #fff; }
.band p { color: rgba(255,255,255,.74); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading.compact { max-width: 860px; margin-inline: auto; text-align: center; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-item {
  padding: 28px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius);
  background: rgba(255,255,255,.08);
}
.service-item span { color: #7dd3fc; font-weight: 900; }
.resources { background: #fff; }
.resource-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 30px; }
.resource-list div { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: #f8fbff; }
.resource-list strong { display: block; color: var(--primary); margin-bottom: 8px; }
.resource-list span { color: var(--muted); }
.panel { padding: 36px; }
.timeline { padding: 22px; display: grid; gap: 14px; }
.timeline div { padding: 18px; border-radius: 18px; background: #f2f8fd; }
.timeline strong { display: block; color: var(--primary); }
.timeline span { color: var(--muted); }
.order { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
.clean-panel { box-shadow: var(--shadow); }
.step-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; counter-reset: steps; }
.step-list li { counter-increment: steps; display: grid; gap: 3px; padding: 18px 18px 18px 58px; position: relative; border-radius: 18px; background: #f2f8fd; }
.step-list li::before { content: counter(steps); position: absolute; left: 18px; top: 19px; display: grid; place-items: center; width: 28px; height: 28px; color: #fff; border-radius: 999px; background: var(--primary); font-weight: 800; }
.step-list span { color: var(--muted); }
.check-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.check-list li { padding: 16px 18px; border-radius: 16px; background: #f2f8fd; }
.check-list li::before { content: "✓"; margin-right: 10px; color: var(--accent); font-weight: 900; }
.contact { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.contact-grid > * { padding: 22px; border-radius: 18px; background: #f2f8fd; }
.contact-grid span { display: block; color: var(--muted); font-size: 14px; }
.contact-grid strong { display: block; margin-top: 8px; word-break: break-all; }
.hierarchy-list { display: grid; gap: 28px; }
.hierarchy-card, .category-block, .notice-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 16px 44px rgba(15, 46, 80, .06);
}
.hierarchy-card { padding: 30px; }
.hierarchy-card h2, .category-block h3, .sub-category h4 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}
.hierarchy-card h2 span, .category-block h3 span, .sub-category h4 span {
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}
.child-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 22px; }
.category-block { padding: 24px; background: #f8fbff; }
.category-block ul, .hierarchy-card > ul, .sub-category ul { margin: 16px 0 0; padding-left: 20px; color: var(--muted); }
.category-block li, .hierarchy-card > ul li, .sub-category li { margin-bottom: 8px; }
.sub-category { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.sub-category h4 { margin: 0; font-size: 18px; }
.empty-note { margin: 12px 0 0; color: var(--muted); }
.notice-card { padding: 26px; background: #f8fbff; }
.download-links { display: grid; gap: 12px; margin: 18px 0 0; padding: 0; list-style: none; }
.download-links li { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; border-radius: 14px; background: #f2f8fd; }
.download-links a { color: var(--primary); font-weight: 800; }
.download-links span { color: var(--muted); font-size: 14px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px clamp(20px, 6vw, 90px); background: #081827; }
.site-footer p { margin: 0; color: rgba(255,255,255,.72); font-size: 14px; }
.site-footer .beian { color: rgba(255,255,255,.56); }

@media (max-width: 980px) {
  .hero, .split, .split.reverse, .order, .contact { grid-template-columns: 1fr; }
  .cards.three, .cards.four, .stats, .contact-grid, .service-grid, .resource-list, .child-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .lab-visual { min-height: 360px; }
}

@media (max-width: 760px) {
  .site-header { padding: 14px 20px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px; }
  .section { padding: 58px 20px; }
  .site-footer { flex-direction: column; }
}

.qr-card{display:grid;gap:10px;justify-items:start;margin-top:20px}.qr-card span{color:#55708c;font-weight:700}.qr-card img{width:180px;max-width:100%;border:1px solid #dbe5ef;border-radius:16px;background:#fff;padding:10px;box-shadow:0 12px 30px rgba(15,46,80,.08)}
.product-detail .detail-content{background:#fff;border:1px solid #dbe5ef;border-radius:22px;padding:26px;box-shadow:0 16px 40px rgba(15,46,80,.06);overflow:auto}.product-detail h2,.product-detail h3,.product-detail h4{color:#0f2f57;margin:18px 0 10px}.product-detail p,.product-detail div{line-height:1.8}.product-detail img{max-width:260px;height:auto;border-radius:14px;border:1px solid #dbe5ef;background:#fff;padding:6px;margin:6px 0 14px}.product-detail table{width:100%;border-collapse:collapse;margin:16px 0;background:#fff}.product-detail td,.product-detail th{border:1px solid #d8e2ec;padding:9px 10px;vertical-align:top}.product-detail tr:first-child td,.product-detail th{background:#eef6ff;font-weight:700}.product-detail ul,.product-detail ol{padding-left:22px;line-height:1.8}@media(max-width:700px){.product-detail .detail-content{padding:18px}.product-detail table{display:block;overflow-x:auto}.product-detail img{max-width:100%}}
.brand-logo{display:block;width:176px;height:auto;object-fit:contain}.brand-text{display:none}@media(max-width:640px){.brand-logo{width:146px}}

.home-quick{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:-36px;position:relative;z-index:5}.quick-card{display:grid;gap:8px;padding:24px;border:1px solid #d8e8f3;border-radius:22px;background:rgba(255,255,255,.94);box-shadow:0 18px 45px rgba(15,46,80,.09);text-decoration:none;color:#12324d}.quick-card span{color:#18a8d8;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.quick-card strong{font-size:22px;color:#0f2f57}.quick-card em{font-style:normal;color:#60758a;line-height:1.7}.quick-card:hover{transform:translateY(-3px);box-shadow:0 24px 55px rgba(15,46,80,.13)}.scientific-hero{background:linear-gradient(135deg,#eef9ff 0%,#f7fcff 48%,#ecf8f0 100%);border-bottom:1px solid #d7ebf4}.hero-actions .ghost{background:#fff;color:#0878d8;border:1px solid #b8dff2}.cards.four .card{transition:.2s ease}.cards.four .card:hover{transform:translateY(-3px)}@media(max-width:900px){.home-quick{grid-template-columns:1fr;margin-top:0}.quick-card{padding:20px}}