*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--surface: #1e293b;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--accent: #3b82f6;--accent-hover: #2563eb;font-family:system-ui,-apple-system,sans-serif;color:var(--text);background:var(--bg)}body{min-height:100dvh}button{cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;background:var(--accent);color:#fff;transition:background .15s}button:hover{background:var(--accent-hover)}.container{max-width:1200px;margin:0 auto;padding:2rem}