:root {
  --sky: #539fc7;
  --sage: #668d64;
  --sand: #a89169;
  --amber: #de9b3c;
  --lime: #aecc2e;
  --ink: #1b2a38;
  --muted: #5b6b78;
  --bg: #f7f6f2;
  --surface: #ffffff;
  --line: #e2ded4;
}

* {
  box-sizing: border-box;
}

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

a {
  color: var(--sky);
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 0.95rem;
}

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

.hero {
  text-align: center;
  padding: 64px 0 40px;
}

.hero img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 10px 30px rgba(27, 42, 56, 0.18);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 24px 0 8px;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}

.badge {
  display: inline-block;
  margin-top: 24px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--amber);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding: 24px 0 56px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.card h3 {
  margin: 8px 0 4px;
}

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

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

article.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px clamp(20px, 5vw, 48px);
  margin: 32px 0 56px;
}

article.doc h1 {
  margin-top: 0;
  letter-spacing: -0.01em;
}

article.doc h2 {
  margin-top: 32px;
  font-size: 1.25rem;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
}

.steps li {
  margin-bottom: 8px;
}

.note {
  background: #eef5fa;
  border-left: 4px solid var(--sky);
  padding: 12px 16px;
  border-radius: 8px;
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a {
  color: var(--muted);
  margin-right: 16px;
}