:root {
  color-scheme: light;
  --ink: #19202a;
  --muted: #66717f;
  --line: #dfe5ea;
  --surface: #ffffff;
  --soft: #f5f8fa;
  --brand: #f28a18;
  --brand-dark: #b95f0b;
  --teal: #197f83;
  --shadow: 0 18px 55px rgba(20, 32, 46, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

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

.site-header,
.site-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header {
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.top-nav a:hover,
.site-footer a:hover {
  color: var(--brand-dark);
}

.hero {
  width: min(1120px, calc(100% - 40px));
  min-height: 520px;
  margin: 0 auto;
  padding: 72px 0 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.76fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(48px, 8vw, 82px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.22;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.hero-text {
  max-width: 620px;
  margin: 24px 0 0;
  color: #4f5b68;
  font-size: 20px;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 46px;
  padding: 10px 20px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  border: 1px solid transparent;
}

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

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

.status-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 26px;
}

.panel-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.panel-head {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.panel-head strong {
  color: var(--teal);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 24px 0;
}

.metric-value,
.metric-label {
  display: block;
}

.metric-value {
  color: var(--ink);
  font-size: 24px;
  font-weight: 900;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
}

.check-list {
  display: grid;
  gap: 10px;
}

.check-list span {
  min-height: 42px;
  padding: 9px 12px;
  border-radius: 8px;
  background: #f7fbfb;
  border: 1px solid #d7ebeb;
  color: #315f62;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 620px;
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 190px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature-card p,
.scenario-list,
.contact p,
.policy p {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 44px;
}

.scenario-list p {
  margin: 0 0 18px;
  font-size: 18px;
}

.contact {
  padding-bottom: 90px;
}

.policy-page {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

.policy {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 34px;
}

.policy h1 {
  font-size: 42px;
}

.policy h2 {
  margin-top: 34px;
  font-size: 24px;
}

.site-footer {
  min-height: 86px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 820px) {
  .site-header,
  .site-footer {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 16px 0;
  }

  .top-nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    font-size: 14px;
  }

  .hero,
  .section,
  .policy-page {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    min-height: auto;
    padding: 44px 0 56px;
    grid-template-columns: 1fr;
    gap: 32px;
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 28px;
  }

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

  .feature-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .policy {
    padding: 24px;
  }
}