:root {
  --bg-color: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --border-color: #334155;
  --gradient-hero: linear-gradient(135deg, #059669 0%, #1d4ed8 100%);
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg-color); color: var(--text-main); font-family: var(--font-family); line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
header { background: rgba(15, 23, 42, 0.85); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--border-color); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 0.75rem; font-size: 1.25rem; font-weight: 700; color: var(--text-main); text-decoration: none; }
.logo-badge { background: var(--gradient-hero); padding: 0.2rem 0.5rem; border-radius: 6px; font-size: 1rem; }
nav ul { display: flex; gap: 1.5rem; list-style: none; }
nav a { color: var(--text-muted); text-decoration: none; font-weight: 500; transition: color 0.2s ease; }
nav a:hover { color: var(--accent-green); }
.hero { padding: 4rem 2rem 3rem; text-align: center; background: radial-gradient(circle at 50% 20%, rgba(16, 185, 129, 0.15), transparent 70%); }
.hero-container { max-width: 900px; margin: 0 auto; }
.hero-tag { display: inline-block; background: rgba(16, 185, 129, 0.1); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.3); padding: 0.3rem 0.9rem; border-radius: 9999px; font-size: 0.85rem; font-weight: 600; margin-bottom: 1rem; }
.hero h1 { font-size: 2.5rem; font-weight: 800; line-height: 1.2; margin-bottom: 1rem; background: linear-gradient(to right, #ffffff, #94a3b8); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 1.5rem; }
section { padding: 3rem 2rem; max-width: 1100px; margin: 0 auto; width: 100%; }
.section-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-main); }
.card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.75rem; margin-bottom: 1.5rem; }
.code-box { background: #090d16; border: 1px solid var(--border-color); border-radius: 8px; padding: 1.25rem; font-family: 'Consolas', 'Courier New', monospace; color: #38bdf8; overflow-x: auto; margin-top: 1rem; }
footer { margin-top: auto; border-top: 1px solid var(--border-color); background: #090d16; padding: 2rem; text-align: center; color: var(--text-muted); font-size: 0.9rem; }
footer a { color: var(--accent-green); text-decoration: none; }