/* dark_mode — default */
:root {
  --sh-bg: #0b1020;
  --sh-bg-grad: radial-gradient(1200px 600px at 20% -10%, rgba(46,204,113,.08), transparent 60%), #0b1020;
  --sh-surface: #121a2e; --sh-surface-2: #182340; --sh-surface-3: #1f2b4d;
  --sh-border: rgba(255,255,255,.09);
  --sh-text: #e7ecf5; --sh-text-2: #c3cbdb; --sh-muted: #96a2b8;
  --sh-accent: #2ecc71; --sh-accent-ink: #06130b; --sh-info: #3498db; --sh-warn: #f39c12; --sh-danger: #e74c3c;
  --sh-shadow: 0 8px 24px rgba(0,0,0,.28); --sh-blur: none; --sh-radius: 10px;
}