:root {
  color-scheme: light;
  --ink: #172426;
  --muted: #5c6f73;
  --surface: #f2fbfc;
  --panel: #ffffff;
  --line: rgba(23, 36, 38, 0.1);
  --primary: #0c8f8f;
  --primary-dark: #0a6270;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--surface);
  font-family:
    -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic",
    "Segoe UI", sans-serif;
  line-height: 1.75;
}

a {
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.page {
  width: min(100%, 960px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 64px 22px;
  display: grid;
  align-items: center;
}

.hero {
  width: min(100%, 720px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(2.3rem, 7vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 36px 0 10px;
  font-size: 1.18rem;
  line-height: 1.35;
}

p {
  margin: 0 0 18px;
}

.hero p:not(.eyebrow) {
  max-width: 640px;
  color: var(--muted);
  font-size: 1.08rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  text-decoration: none;
}

.doc {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 44px 22px 72px;
}

.doc h1 {
  font-size: clamp(2rem, 6vw, 3.3rem);
}

.muted {
  color: var(--muted);
}

.back {
  display: inline-flex;
  margin-bottom: 28px;
  text-decoration: none;
}

.notice {
  margin: 28px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

ul {
  padding-left: 1.25rem;
}

@media (max-width: 560px) {
  .page {
    align-items: start;
    padding-top: 52px;
  }

  .links {
    flex-direction: column;
  }

  .links a {
    justify-content: center;
  }
}