@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #0d9488;
  --accent-strong: #0f766e;
  --danger: #b91c1c;
  --border: #e2e8f0;
  --shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.page {
  max-width: 1080px;
  margin: 32px auto;
  padding: 0 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
}

header {
  text-align: center;
  margin-bottom: 24px;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.meta {
  color: #64748b;
  font-weight: 500;
  margin-bottom: 4px;
}

nav a {
  color: var(--accent);
  font-weight: 600;
  margin: 0 8px;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

section {
  margin: 28px 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--accent);
  text-transform: uppercase;
}

h3 {
  margin: 16px 0 8px;
  font-size: 16px;
}

p {
  margin: 10px 0;
  color: var(--muted);
}

ul {
  margin: 8px 0 8px 20px;
  color: var(--muted);
}

li {
  margin-bottom: 6px;
}

.highlight {
  background: #fef2f2;
  border-left: 4px solid var(--danger);
  padding: 12px;
  border-radius: 10px;
  color: var(--danger);
  font-weight: 700;
}

.info-box {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  padding: 14px 16px;
  border-radius: 12px;
  color: var(--accent-strong);
  margin: 14px 0;
}

.warning-box {
  background: #fff5f5;
  border: 1px solid #fca5a5;
  padding: 14px 16px;
  border-radius: 12px;
  color: #991b1b;
  margin: 18px 0;
}

.footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 24px;
  text-align: center;
  color: #64748b;
  font-size: 14px;
}