:root {
  --primary: #00897b;
  --text: #1b1b1f;
  --muted: #5f6368;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e0e0e0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

header {
  background: var(--primary);
  color: #fff;
  padding: 20px 0;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

header a.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.3px;
}

header nav a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
}

header nav a:hover { color: #fff; text-decoration: underline; }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

main.container { padding-top: 40px; padding-bottom: 64px; }

h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 8px; }
h2 { font-size: 21px; font-weight: 700; margin: 32px 0 12px; }
h3 { font-size: 17px; font-weight: 700; margin: 24px 0 8px; }
p { margin-bottom: 12px; }
ul, ol { margin: 0 0 12px 24px; }
li { margin-bottom: 6px; }

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

.lang-note {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
}

.updated { color: var(--muted); font-size: 14px; margin-bottom: 24px; }

hr.lang-divider { border: none; border-top: 2px solid var(--border); margin: 48px 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
  font-size: 14px;
}

th, td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th { background: #f0f0ee; }

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

footer .container { display: flex; flex-wrap: wrap; gap: 16px; }
footer a { color: var(--muted); }

.hero {
  text-align: center;
  padding: 64px 20px;
}

.hero h1 { font-size: 36px; margin-bottom: 12px; }
.hero p { font-size: 18px; color: var(--muted); max-width: 560px; margin: 0 auto 24px; }

.card-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
}

.card-links a {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow 0.15s ease;
}

.card-links a:hover { box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08); }
.card-links a strong { display: block; color: var(--primary); margin-bottom: 4px; }
.card-links a span { font-size: 14px; color: var(--muted); }

.placeholder {
  background: #fff8e1;
  border: 1px dashed #f9a825;
  padding: 2px 6px;
  border-radius: 4px;
  font-style: italic;
}