:root {
  color-scheme: light;
  --ink: #192d27;
  --muted: #61716b;
  --line: #d7e1dc;
  --green: #168a67;
  --green-dark: #0b5e49;
  --mint: #e7f4ed;
  --blue: #367aa7;
  --blue-soft: #e7f1f8;
  --orange: #c96239;
  --orange-soft: #fbece5;
  --gold: #b87915;
  --gold-soft: #fff3d8;
  --purple: #7455a3;
  --purple-soft: #f0ecf8;
  --rose: #a85364;
  --rose-soft: #f9eaed;
  --paper: #ffffff;
  --canvas: #f4f8f6;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.7;
  letter-spacing: 0;
}
img { display: block; max-width: 100%; }
a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 10px max(24px, calc((100vw - 1240px) / 2));
  border-bottom: 1px solid rgba(215, 225, 220, .9);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: 20px; font-weight: 800; }
.brand img { width: 44px; height: 44px; border-radius: 8px; }
nav { display: flex; align-items: center; gap: 26px; }
nav a { color: #42534d; font-size: 14px; font-weight: 700; text-decoration: none; }
nav a:hover { color: var(--green); }

.hero {
  position: relative;
  min-height: 620px;
  height: min(760px, 78vh);
  overflow: hidden;
  background-color: #eef4e8;
  background-image: url("/official-assets/home.png");
  background-repeat: no-repeat;
  background-position: calc(100% - 9vw) 14%;
  background-size: 430px auto;
}
.hero-wash { position: absolute; inset: 0; background: rgba(242, 247, 239, .84); }
.hero-content {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: clamp(76px, 11vh, 124px);
}
.eyebrow { margin: 0 0 12px; color: var(--green); font-size: 14px; font-weight: 800; text-transform: uppercase; }
h1, h2, h3, p { letter-spacing: 0; }
h1 { max-width: 760px; margin: 0; font-size: 82px; line-height: 1.05; }
.hero-offer { max-width: 780px; margin: 22px 0 8px; font-size: 35px; font-weight: 800; line-height: 1.35; }
.hero-copy { max-width: 720px; margin: 0; color: #40524c; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 1px solid var(--green);
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}
.button.primary { color: #fff; background: var(--green); }
.button.secondary { color: var(--green-dark); background: rgba(255, 255, 255, .82); }
.release-note { margin-top: 18px; color: var(--muted); font-size: 13px; }

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  max-width: 1240px;
  margin: -42px auto 0;
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}
.facts div { padding: 26px 30px; background: #fff; }
.facts strong { display: block; font-size: 28px; line-height: 1.2; }
.facts span { display: block; margin-top: 4px; color: var(--muted); font-size: 14px; }

.section { max-width: 1240px; margin: 0 auto; padding: 110px 0; }
.section-heading { max-width: 780px; }
.section-heading.compact { max-width: 900px; }
.section-heading h2, .health-copy h2, .operator-band h2 { margin: 0; font-size: 42px; line-height: 1.25; }
.section-heading > p:last-child, .health-copy > p, .operator-band > div > p:last-child { color: var(--muted); font-size: 17px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 46px; }
.feature-item { min-height: 250px; padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.feature-number {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  font-size: 14px;
  font-weight: 800;
}
.feature-number.blue { background: var(--blue); }
.feature-number.orange { background: var(--orange); }
.feature-number.purple { background: var(--purple); }
.feature-number.rose { background: var(--rose); }
.feature-number.gold { background: var(--gold); }
.feature-item h3 { margin: 20px 0 8px; font-size: 22px; }
.feature-item p { margin: 0; color: var(--muted); font-size: 15px; }

.workflow-band { padding: 100px max(24px, calc((100vw - 1240px) / 2)); background: #fff; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 46px 0 64px; padding: 0; list-style: none; }
.steps li { display: flex; gap: 16px; align-items: flex-start; }
.steps li > span { display: grid; flex: 0 0 42px; width: 42px; height: 42px; place-items: center; border-radius: 50%; color: #fff; background: var(--green-dark); font-weight: 800; }
.steps strong { display: block; font-size: 18px; }
.steps p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.product-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-gallery figure { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: var(--canvas); }
.product-gallery img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; object-position: top; }
.product-gallery figcaption { display: flex; flex-direction: column; padding: 16px 18px 18px; background: #fff; }
.product-gallery figcaption strong { font-size: 16px; }
.product-gallery figcaption span { color: var(--muted); font-size: 13px; }

.health-section { display: grid; grid-template-columns: 1.2fr .8fr; gap: 90px; align-items: center; }
.check-list { display: grid; gap: 12px; margin: 26px 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; font-weight: 700; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.health-notice { padding: 18px 20px; border-left: 4px solid var(--gold); background: var(--gold-soft); color: #654611 !important; font-size: 14px !important; }
.health-visual { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.health-visual img { width: 100%; max-height: 700px; object-fit: cover; object-position: top; }
.health-visual figcaption { padding: 14px 18px; color: var(--muted); font-size: 13px; }

.membership-band { padding: 100px max(24px, calc((100vw - 1240px) / 2)); color: #f8fffc; background: #113d32; }
.membership-band .eyebrow { color: #8fdfbd; }
.membership-band .section-heading > p:last-child { color: #c6d7d1; }
.membership-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 42px; }
.membership-grid article { padding: 25px; border: 1px solid #477568; border-radius: 8px; background: #194b3e; }
.membership-grid strong, .membership-grid span { display: block; }
.membership-grid strong { font-size: 19px; }
.membership-grid span { margin-top: 8px; color: #c6d7d1; font-size: 14px; }
.membership-note { max-width: 1000px; margin: 28px 0 0; color: #bdd1ca; font-size: 14px; }

.compliance-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 42px; }
.compliance-grid > div { padding: 26px 28px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.compliance-grid h3 { margin: 0 0 8px; font-size: 20px; }
.compliance-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.legal-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.legal-links a { padding: 9px 14px; border: 1px solid var(--green); border-radius: 6px; color: var(--green-dark); font-weight: 800; text-decoration: none; }

.operator-band { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; padding: 90px max(24px, calc((100vw - 1240px) / 2)); background: var(--blue-soft); }
.operator-band dl { margin: 0; }
.operator-band dl > div { display: grid; grid-template-columns: 160px 1fr; gap: 20px; padding: 14px 0; border-bottom: 1px solid #c7d9e5; }
.operator-band dt { color: #526873; font-size: 14px; font-weight: 700; }
.operator-band dd { margin: 0; overflow-wrap: anywhere; font-weight: 700; }

footer { padding: 44px max(24px, calc((100vw - 1240px) / 2)); color: #c9d6d1; background: #142620; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { border-radius: 8px; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { color: #fff; font-size: 18px; }
.footer-brand span { font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; margin: 28px 0 18px; }
.footer-links a { color: #fff; font-size: 14px; font-weight: 700; text-decoration: none; }
footer > p { margin: 0; font-size: 12px; }

@media (max-width: 980px) {
  nav { display: none; }
  .hero { background-position: calc(100% + 60px) 88%; background-size: 320px auto; }
  .hero-content { padding-top: 78px; }
  h1 { font-size: 64px; }
  .hero-offer { max-width: 620px; font-size: 30px; }
  .hero-copy { max-width: 580px; }
  .facts { width: calc(100% - 32px); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-gallery { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .health-section { grid-template-columns: 1fr; gap: 44px; width: calc(100% - 48px); }
  .health-visual { max-width: 480px; }
  .section { width: calc(100% - 48px); }
}

@media (max-width: 640px) {
  .site-header { min-height: 62px; padding: 8px 16px; }
  .brand img { width: 40px; height: 40px; }
  .hero { min-height: 650px; height: 76vh; max-height: 710px; background-position: calc(100% + 68px) calc(100% + 150px); background-size: 280px auto; }
  .hero-wash { background: rgba(242, 247, 239, .88); }
  .hero-content { width: calc(100% - 36px); padding-top: 54px; }
  h1 { font-size: 56px; }
  .hero-offer { margin-top: 18px; font-size: 27px; }
  .hero-copy { font-size: 15px; }
  .button { flex: 1 1 150px; padding-inline: 14px; font-size: 14px; }
  .release-note { max-width: 250px; }
  .facts { grid-template-columns: repeat(2, 1fr); margin-top: -30px; }
  .facts div { padding: 20px; }
  .facts strong { font-size: 23px; }
  .section, .workflow-band, .membership-band { padding-top: 76px; padding-bottom: 76px; }
  .section-heading h2, .health-copy h2, .operator-band h2 { font-size: 31px; }
  .feature-grid, .membership-grid, .compliance-grid, .operator-band { grid-template-columns: 1fr; }
  .feature-item { min-height: 0; }
  .steps { grid-template-columns: 1fr; gap: 22px; }
  .product-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .product-gallery figcaption { padding: 12px; }
  .product-gallery figcaption span { font-size: 11px; }
  .operator-band { gap: 32px; padding-top: 76px; padding-bottom: 76px; }
  .operator-band dl > div { grid-template-columns: 1fr; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}