:root {
  color-scheme: light;
  --bg: #f9f1e6;
  --paper: #fffdf9;
  --ink: #27241f;
  --muted: #8b8275;
  --line: #37322b;
  --accent: #ec5f2f;
  --gold: #f2a638;
  --green: #8e9c59;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

.page {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.nav {
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 64px;
}

.brand {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0;
}

.links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 16px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1,
.doc h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 24px;
}

.badge-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.badge {
  border: 2px solid var(--line);
  border-radius: 999px;
  background: #fffaf2;
  color: var(--accent);
  font-weight: 700;
  padding: 8px 16px;
}

.card {
  background: var(--paper);
  border: 4px solid var(--line);
  border-radius: 28px;
  padding: 30px;
  box-shadow: 0 18px 0 rgba(55, 50, 43, 0.08);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 64px;
}

.feature h2,
.doc h2 {
  margin: 0 0 10px;
  font-size: 26px;
  line-height: 1.25;
}

.feature p,
.doc p,
.doc li {
  color: var(--muted);
  font-size: 18px;
}

.doc {
  max-width: 760px;
}

.doc h1 {
  font-size: clamp(40px, 6vw, 68px);
}

.doc h2 {
  margin-top: 42px;
}

.notice {
  margin-top: 28px;
  padding: 18px 22px;
  border-left: 6px solid var(--gold);
  background: #fffaf2;
  color: var(--muted);
}

footer {
  margin-top: 72px;
  color: var(--muted);
  font-size: 15px;
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 28px, 960px);
    padding-top: 34px;
  }

  .nav,
  .hero {
    display: block;
  }

  .links {
    margin-top: 16px;
  }

  .card {
    margin-top: 34px;
  }

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