:root {
  color-scheme: light;
  --bg: #f8f7f4;
  --surface: #ffffff;
  --ink: #111827;
  --muted: #5f6673;
  --line: #e5e7eb;
  --brand: #0b6b4a;
  --accent: #d21c6c;
  --soft: #eef6f2;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

body {
  margin: 0;
}

a {
  color: var(--brand);
  font-weight: 700;
}

.site-header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}

.header-inner,
.shell,
.site-footer {
  margin: 0 auto;
  max-width: 1080px;
  padding-left: 24px;
  padding-right: 24px;
}

.header-inner {
  align-items: center;
  display: flex;
  justify-content: space-between;
  min-height: 76px;
}

.brand {
  align-items: center;
  display: flex;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--accent);
  border-radius: 12px;
  color: #fff;
  display: grid;
  font-size: 13px;
  font-weight: 900;
  height: 44px;
  letter-spacing: -0.04em;
  line-height: 1;
  place-items: center;
  width: 44px;
}

.brand-text strong {
  color: var(--ink);
  display: block;
  font-size: 17px;
  line-height: 1.2;
}

.brand-text span,
.nav a,
.site-footer {
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: flex;
  gap: 18px;
}

.nav a {
  text-decoration: none;
}

.shell {
  padding-bottom: 56px;
  padding-top: 44px;
}

.hero {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(17, 24, 39, 0.06);
  padding: 34px;
}

.eyebrow {
  background: var(--soft);
  border-radius: 999px;
  color: var(--brand);
  display: inline-flex;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  padding: 8px 13px;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(34px, 6vw, 58px);
  letter-spacing: -0.04em;
  line-height: 0.98;
  margin: 0 0 18px;
}

.hero p {
  color: var(--muted);
  font-size: 19px;
  margin: 0;
  max-width: 760px;
}

.cards {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.card,
.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 12px 36px rgba(17, 24, 39, 0.045);
}

.card {
  display: block;
  padding: 24px;
  text-decoration: none;
}

.card h2 {
  color: var(--ink);
  font-size: 23px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

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

.doc {
  padding: clamp(24px, 4vw, 46px);
}

.doc-header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
  padding-bottom: 22px;
}

.doc-header h1 {
  font-size: clamp(32px, 5vw, 50px);
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.doc h2 {
  font-size: 23px;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 32px 0 10px;
}

.doc h3 {
  font-size: 17px;
  margin: 20px 0 8px;
}

.doc p,
.doc li {
  color: #2f3744;
}

.doc ul {
  padding-left: 22px;
}

.notice {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 14px;
  color: #7c2d12;
  margin: 22px 0;
  padding: 16px 18px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-bottom: 28px;
  padding-top: 24px;
}

@media (max-width: 720px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 16px;
    padding-top: 16px;
  }

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

  .hero,
  .doc {
    border-radius: 14px;
  }
}