:root{--bg-primary:#FFF8F0;--bg-card:#FFFFFF;--bg-accent:#FFE5D0;--border:#1B2A4A;--shadow:#1B2A4A;--text-primary:#1B2A4A;--text-secondary:#5A6B8A;--accent:#FF8C5A;--accent-light:#FFBF9B;--accent-dark:#E06B3A;--success:#22c55e;--error:#ef4444;--tier-bronze:#CD7F32;--tier-silver:#C0C0C0;--tier-gold:#FFD700;--tier-diamond:#B9F2FF;--tier-singularity:#2D1B69}*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.mono{font-family:JetBrains Mono,monospace}.accent{color:var(--accent)}.nav{background:var(--bg-card);border-bottom:3px solid var(--border);padding:12px 0;position:-webkit-sticky;position:sticky;top:0;z-index:100}.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.nav-logo{font-family:JetBrains Mono,monospace;font-weight:700;font-size:1.2rem;color:var(--text-primary)}.nav-logo,.nav-logo:hover{text-decoration:none}.nav-logo-accent{color:var(--accent)}.nav-btn{padding:6px 16px;font-size:.8rem;box-shadow:3px 3px 0 var(--shadow)}.nav-links{display:flex;align-items:center;gap:20px}.nav-links a{color:var(--text-secondary);font-size:.9rem;font-weight:500}.nav-links a:hover{color:var(--text-primary);text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:0 24px}.card{border:2px solid var(--border);border-radius:12px;padding:20px}.btn,.card{background:var(--bg-card);box-shadow:4px 4px 0 var(--shadow)}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border:3px solid var(--border);font-family:JetBrains Mono,monospace;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .15s 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var(--error)}.btn-danger:disabled{opacity:.4;cursor:not-allowed}.btn-danger:disabled:hover{background:white;color:var(--error);transform:none;box-shadow:3px 3px 0 var(--error)}.settings-feedback{padding:12px 16px;border-radius:8px;font-size:.85rem;font-weight:600}.settings-feedback-success{background:#dcfce7;color:#166534;border:2px solid var(--success)}.settings-feedback-error{background:#fef2f2;color:#991b1b;border:2px solid var(--error)}.profile-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px;font-size:.85rem}.profile-meta,.profile-meta a{color:var(--text-secondary)}.profile-meta a:hover{color:var(--accent)}@media (max-width:768px){.nav-hide-mobile{display:none}.nav-inner{padding:0 16px}.nav-links{gap:10px}.nav-btn{padding:6px 12px;font-size:.75rem;box-shadow:2px 2px 0 var(--shadow)}.profile-header{flex-wrap:wrap}.profile-info h1{font-size:1.25rem}.container{padding:0 16px}.section-header h2{font-size:1.8rem}.stat-grid{grid-template-columns:repeat(2,1fr)}.leaderboard-table td,.leaderboard-table th{padding:8px;font-size:.8rem}.settings-toggle-row{gap:12px}}@media (max-width:480px){.nav-links{gap:8px}.nav-btn{padding:4px 10px;font-size:.7rem}.profile-header{gap:12px}.profile-avatar{width:48px;height:48px}.profile-info h1{font-size:1.1rem}.profile-info p{font-size:.8rem}.section{padding:24px 0}.card{padding:16px}.btn,.card{box-shadow:3px 3px 0 var(--shadow)}.btn{padding:10px 16px;font-size:.8rem}.code-block{font-size:.75rem;padding:10px 12px;word-break:break-all}.leaderboard-table td,.leaderboard-table th{padding:6px;font-size:.75rem}.leaderboard-avatar{width:22px;height:22px}.leaderboard-user{gap:6px}}