:root {
  --primary: #0F766E;
  --bg: #0F172A;
  --card: #1E293B;
  --text: #F8FAFC;
  --muted: #94A3B8;
  --border: #334155;
  --danger: #EF4444;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px 36px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

nav a {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 24px;
}

h2 {
  margin: 28px 0 10px;
  font-size: 1.1rem;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}

p, li { color: var(--muted); font-size: 15px; }

.alert {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 16px 0;
}

.alert strong { color: var(--danger); }

.lang {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 2px dashed var(--border);
}

.footer {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

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