:root {
  --bg: #f7f8f8;
  --paper: #ffffff;
  --ink: #17201d;
  --muted: #5e6965;
  --line: #dfe5e2;
  --brand: #126b57;
  --brand-dark: #0d4d40;
  --accent: #d8a445;
  --soft: #eef5f2;
  --danger-soft: #fff6e7;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  color: var(--brand-dark);
  text-decoration: underline;
}

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: 0;
}

.brand span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

.nav-links a {
  color: var(--ink);
}

.nav-links a[aria-current="page"] {
  color: var(--brand);
  font-weight: 700;
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #eef5f2 100%);
  border-bottom: 1px solid var(--line);
}

.hero-inner,
.section,
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px 24px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

h1,
h2,
h3 {
  line-height: 1.18;
  margin: 0 0 16px;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(38px, 6vw, 68px);
}

h2 {
  font-size: clamp(26px, 4vw, 40px);
}

h3 {
  font-size: 21px;
}

p {
  margin: 0 0 16px;
}

.lead {
  font-size: 19px;
  color: var(--muted);
  max-width: 760px;
}

.zh {
  color: #3c4743;
  border-left: 3px solid var(--accent);
  padding-left: 14px;
}

.hero-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 16px 40px rgba(13, 77, 64, .08);
}

.hero-card ul,
.check-list,
.plain-list,
.steps {
  margin: 0;
  padding-left: 20px;
}

.hero-card li,
.check-list li,
.plain-list li,
.steps li {
  margin: 8px 0;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 700;
  border: 1px solid var(--brand);
}

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

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

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.card h3 {
  color: var(--brand-dark);
}

.band {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.notice {
  background: var(--danger-soft);
  border: 1px solid #eed9ac;
  border-radius: 8px;
  padding: 18px;
}

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

.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: start;
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.table th,
.table td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 14px;
  vertical-align: top;
}

.table th {
  background: var(--soft);
  color: var(--brand-dark);
}

.table tr:last-child td {
  border-bottom: 0;
}

code {
  background: var(--soft);
  color: var(--brand-dark);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 6px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: .92em;
}

.site-footer {
  background: #101816;
  color: #dce6e2;
}

.footer-inner {
  padding-top: 34px;
  padding-bottom: 34px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a,
.site-footer a {
  color: #dce6e2;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-inner,
  .split,
  .grid,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .hero-inner,
  .section,
  .footer-inner {
    padding: 38px 20px;
  }

  .nav-links {
    gap: 12px;
  }
}