:root {
  --bg: #f2efe8;
  --card: #fffdf8;
  --ink: #1f2430;
  --muted: #575e6b;
  --accent: #0a6e5a;
  --line: #d9d3c8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #e5dac7 0%, transparent 60%),
    radial-gradient(900px 500px at 100% 10%, #dcefe8 0%, transparent 55%),
    var(--bg);
  line-height: 1.7;
}

.container {
  width: min(860px, 92vw);
  margin: 48px auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 12px 30px rgb(20 20 20 / 8%);
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.lang-switch a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.lang-switch a[aria-current="page"] {
  color: var(--ink);
  pointer-events: none;
  text-decoration: underline;
}

.hero {
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
  padding-bottom: 16px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1 {
  margin: 6px 0 4px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

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

h2 {
  margin-top: 22px;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

ul {
  margin: 8px 0;
  padding-left: 1.2rem;
}

section p {
  margin: 8px 0;
}

footer {
  margin-top: 26px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .container {
    margin: 20px auto;
    padding: 20px;
    border-radius: 14px;
  }

  .lang-switch {
    justify-content: flex-start;
  }
}