:root {
  color-scheme: light;
  --bg: #eef3f4;
  --surface: #ffffff;
  --surface-alt: #f8fbfb;
  --line: #d8e2e5;
  --text: #17313a;
  --muted: #5e6f76;
  --primary: #0f766e;
  --primary-strong: #115e59;
  --accent: #d97706;
  --accent-soft: #fff5e7;
  --blue: #2563eb;
  --rose: #be185d;
  --shadow: 0 1px 0 rgba(10, 20, 25, 0.04);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(238, 243, 244, 0.9);
  border-bottom: 1px solid rgba(216, 226, 229, 0.9);
}

.topbar .shell {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  flex: none;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-copy strong {
  font-size: 16px;
  line-height: 1.2;
  letter-spacing: 0;
}

.brand-copy span {
  font-size: 12px;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  font-size: 14px;
  color: var(--muted);
}

.band {
  padding: 28px 0;
}

.band-alt {
  background: rgba(255, 255, 255, 0.45);
}

.hero-band {
  padding-top: 24px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 20px;
  align-items: stretch;
}

.hero-copy,
.hero-visual,
.section-head,
.note-panel,
.contact-card,
.info-card,
.fact-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 28px;
}

.kicker {
  margin: 0 0 10px;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.hero-copy h1,
.section-head h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.15;
}

.hero-copy h1 {
  font-size: 42px;
}

.hero-lead {
  margin: 10px 0 0;
  font-size: 22px;
  font-weight: 700;
}

.hero-text {
  margin: 14px 0 0;
  color: var(--muted);
  max-width: 56ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.btn svg {
  width: 16px;
  height: 16px;
  flex: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-strong);
  text-decoration: none;
}

.btn-secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost {
  border-color: transparent;
  color: var(--primary-strong);
  background: transparent;
}

.hero-facts {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-facts > div,
.fact-item {
  padding: 14px;
}

.hero-facts span,
.fact-item span,
.contact-card span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.hero-facts strong,
.fact-item strong,
.contact-card strong {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.45;
}

.hero-visual {
  padding: 22px;
  overflow: hidden;
}

.visual-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.visual-head img {
  width: 96px;
  height: 96px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #fff;
  flex: none;
}

.visual-head strong {
  display: block;
  font-size: 22px;
}

.visual-head span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.surface-stack {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.surface-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-alt);
}

.surface-row img {
  width: 34px;
  height: 34px;
  flex: none;
}

.surface-row strong {
  display: block;
  font-size: 14px;
}

.surface-row span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.section-head {
  padding: 24px 28px 0;
  border-bottom: 0;
  background: transparent;
  box-shadow: none;
}

.section-head h2 {
  font-size: 28px;
}

.section-head p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 70ch;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding: 20px 28px 28px;
}

.info-card {
  padding: 18px;
  min-height: 182px;
}

.info-card img {
  width: 44px;
  height: 44px;
}

.info-card h3 {
  margin: 12px 0 8px;
  font-size: 17px;
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 20px 28px 28px;
}

.fact-item {
  min-height: 92px;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 20px 28px 28px;
}

.note-panel {
  padding: 20px;
}

.note-panel h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.note-panel ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.note-panel li + li {
  margin-top: 10px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 20px 28px 28px;
}

.contact-card {
  padding: 16px;
}

.contact-card a {
  color: var(--primary-strong);
  text-decoration: none;
}

.contact-card a:hover {
  text-decoration: underline;
}

.footer {
  padding: 0 0 28px;
}

.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.75);
}

.footer-shell strong {
  display: block;
  font-size: 15px;
}

.footer-shell p {
  margin: 4px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  justify-content: flex-end;
}

@media (max-width: 960px) {
  .hero-grid,
  .card-grid,
  .facts-grid,
  .split-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .section-head h2 {
    font-size: 24px;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 1120px);
  }

  .topbar .shell,
  .footer-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav,
  .footer-links {
    justify-content: flex-start;
  }

  .hero-grid,
  .card-grid,
  .facts-grid,
  .split-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .hero-visual,
  .section-head,
  .card-grid,
  .split-grid,
  .facts-grid,
  .contact-grid {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-copy h1 {
    font-size: 32px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .hero-facts {
    grid-template-columns: 1fr;
  }
}