:root {
  --bg: #f6f0e8;
  --surface: rgba(255, 252, 247, 0.9);
  --surface-strong: #fffdf9;
  --text: #1f1a17;
  --muted: #6d5a4d;
  --accent: #0d6b63;
  --accent-2: #d97a3a;
  --border: rgba(31, 26, 23, 0.08);
  --shadow: 0 24px 60px rgba(91, 71, 52, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(217, 122, 58, 0.16), transparent 34%),
    radial-gradient(circle at top right, rgba(13, 107, 99, 0.16), transparent 28%),
    linear-gradient(180deg, #fdf8f2 0%, var(--bg) 100%);
}

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

code {
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.95em;
}

.shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

.hero {
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 247, 239, 0.92));
  box-shadow: var(--shadow);
}

.hero.compact {
  padding: 28px 32px;
}

.eyebrow,
.card-label {
  margin: 0 0 10px;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
  margin-top: 28px;
}

p,
li {
  line-height: 1.75;
}

.lede {
  max-width: 60ch;
  color: var(--muted);
  margin: 0 0 12px;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.card,
.notice,
.language-block {
  margin-top: 24px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 700;
}

.button:hover {
  background: #09564f;
}

.policy ul {
  margin: 0;
  padding-left: 20px;
}

.back {
  margin: 0 0 16px;
}

.back a {
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 1040px);
    padding-top: 20px;
  }

  .hero,
  .hero.compact,
  .card,
  .notice,
  .language-block {
    padding: 22px;
    border-radius: 20px;
  }
}