:root{--bg:#faf9f6;--surface:#ffffff;--ink:#1a1a2e;--ink-soft:#5a5a6e;--primary:#5b4fe0;--accent:#ff6b6b;--line:#eceae4;--tier-champion:#e84393;--tier-loyal:#ff6b6b;--tier-engaged:#f5a623;--tier-casual:#4ecdc4;--tier-dormant:#9aa0b4;--radius-card:16px;--radius-btn:10px;--shadow-soft:0 8px 24px -12px rgba(91,79,224,0.18)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;font-feature-settings:"tnum" 1;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-soft)}.btn{display:inline-block;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-btn);padding:.75rem 1.25rem;font-weight:600;cursor:pointer}