:root{--bg:#f8fafc;--text:#0f172a;--muted:#64748b;--card-bg:#fff;--card-border:#e2e8f0;--primary:#6366f1;--primary-2:#4f46e5;--primary-soft:#6366f114;--input-bg:#fff;--input-disabled-bg:#f1f5f9;--surface-subtle:#f1f5f9;--pill-bg:#f1f5f9;--pill-border:#e2e8f0;--success:#16a34a;--danger:#dc2626;--warning:#f59e0b;--shadow-sm:0 1px 2px #0000000a;--shadow-md:0 4px 12px #0000000f;--shadow-lg:0 8px 24px #00000014;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--transition:180ms ease}.theme-dark{--bg:#0c1017;--text:#e2e8f0;--muted:#94a3b8;--card-bg:#141a25;--card-border:#1e293b;--primary:#818cf8;--primary-2:#6366f1;--primary-soft:#818cf81a;--input-bg:#1a2332;--input-disabled-bg:#0f1520;--surface-subtle:#111827;--pill-bg:#1e293b;--pill-border:#334155;--shadow-sm:0 1px 2px #0003;--shadow-md:0 4px 12px #0000004d;--shadow-lg:0 8px 24px #0006}*,:after,:before{box-sizing:border-box}#root,body,html{max-width:100%;overflow-x:hidden}body{-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;background:#f8fafc;background:var(--bg);color:#0f172a;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;margin:0;min-height:100vh;touch-action:manipulation;transition:background .18s ease,color .18s ease;transition:background var(--transition),color var(--transition)}h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.3}.topbar{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:#0f172af2;border-bottom:1px solid #ffffff0f;position:-webkit-sticky;position:sticky;top:0;z-index:40}.nav-container{gap:8px;height:56px;margin:0 auto;max-width:1100px;padding:0 20px}.brand,.nav-container{align-items:center;display:flex}.brand{cursor:pointer;gap:10px;text-decoration:none;-webkit-user-select:none;user-select:none}.brand-logo{border-radius:6px;height:28px;object-fit:contain;width:28px}.brand-title{color:#f8fafc;font-weight:700;letter-spacing:-.01em}.nav-actions{display:flex;margin-left:auto}.btn,.nav-actions{align-items:center;gap:6px}.btn{-webkit-appearance:none;appearance:none;background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);color:#0f172a;color:var(--text);cursor:pointer;display:inline-flex;font-size:14px;font-weight:600;justify-content:center;padding:8px 16px;transition:all .18s ease;transition:all var(--transition);white-space:nowrap}.btn:hover:not(:disabled){box-shadow:0 4px 12px #0000000f;box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{cursor:not-allowed;opacity:.5}.btn-primary{background:#6366f1;background:var(--primary);border-color:#0000;box-shadow:0 2px 8px #6366f14d;color:#fff}.btn-primary:hover:not(:disabled){background:#4f46e5;background:var(--primary-2);box-shadow:0 4px 14px #6366f166}.btn-finished{background:#16a34a;background:var(--success);box-shadow:0 2px 8px #16a34a4d}.btn-danger,.btn-finished{border-color:#0000;color:#fff}.btn-danger{background:#dc2626;background:var(--danger);box-shadow:0 2px 8px #dc26264d}.btn-lg{font-size:14px;padding:10px 18px}.btn-soft{background:#ffffff12;border:1px solid #ffffff1f;color:#e2e8f0}.btn-soft:hover:not(:disabled){background:#ffffff1f}.btn-soft.active{background:#6366f1;border-color:#0000;color:#fff}.input{background:#fff;background:var(--input-bg);border:1.5px solid #e2e8f0;border:1.5px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);color:#0f172a;color:var(--text);font-size:15px;outline:none;padding:10px 14px;transition:border-color .18s ease,box-shadow .18s ease;transition:border-color var(--transition),box-shadow var(--transition);width:100%}.input::placeholder{color:#64748b;color:var(--muted)}.input:focus{border-color:#6366f1;border-color:var(--primary);box-shadow:0 0 0 3px #6366f126}.input:disabled{background:#f1f5f9;background:var(--input-disabled-bg);opacity:.7}.card{background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:16px;box-shadow:0 1px 2px #0000000a;transition:box-shadow .18s ease,transform .18s ease;transition:box-shadow var(--transition),transform var(--transition)}.lb-pill{align-items:center;background:#f1f5f9;background:var(--pill-bg);border:1px solid #e2e8f0;border:1px solid var(--pill-border);border-radius:999px;color:#0f172a;color:var(--text);display:inline-flex;font-size:12px;font-weight:500;gap:4px;padding:4px 10px;white-space:nowrap}.page-container{margin:0 auto;max-width:900px;padding:24px 16px;width:100%}.home-grid{grid-gap:20px;align-items:start;display:grid;gap:20px;grid-template-columns:1fr 320px;margin:0 auto;max-width:1100px;padding:24px 20px;width:100%}.leaderboard-aside{position:-webkit-sticky;position:sticky;top:72px}.page-title{align-items:center;display:flex;font-size:22px;font-weight:700;gap:8px;justify-content:center;margin:0 0 20px;text-align:center}.section{padding:20px}.brand-inline{border-radius:6px;height:24px;object-fit:contain;width:24px}.theme-fab{background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:999px;bottom:16px;box-shadow:0 8px 24px #00000014;box-shadow:var(--shadow-lg);color:#0f172a;cursor:pointer;display:grid;font-size:18px;height:44px;line-height:1;place-items:center;position:fixed;right:16px;transition:all .18s ease;transition:all var(--transition);width:44px;z-index:50}.theme-fab:hover{transform:translateY(-2px) scale(1.05)}.banner-container{background:#6366f1;background:var(--primary);color:#fff;width:100%}.banner-track{align-items:center;display:flex;font-size:13px;font-weight:500;height:32px;overflow:hidden;position:relative;white-space:nowrap}.banner-marquee{animation:marquee-left linear infinite;display:inline-block;padding-left:100%;will-change:transform}@keyframes marquee-left{0%{transform:translateX(0)}to{transform:translateX(-100%)}}.auth-page{align-items:center;background:#f8fafc;background:var(--bg);display:flex;justify-content:center;min-height:100vh;padding:24px 16px}.auth-card{background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:20px;border-radius:var(--radius-xl);box-shadow:0 8px 24px #00000014;box-shadow:var(--shadow-lg);max-width:400px;padding:32px 28px 24px;width:100%}.auth-header{margin-bottom:24px;text-align:center}.auth-logo{margin-bottom:12px}.auth-logo-img{display:block;height:52px;object-fit:contain;width:52px}.auth-title{color:#0f172a;color:var(--text);font-size:24px;font-weight:700;margin:0 0 4px}.auth-subtitle{color:#64748b;color:var(--muted);font-size:14px;margin:0}.auth-tabs{background:#f1f5f9;border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);display:grid;grid-template-columns:1fr 1fr;margin-bottom:20px;padding:3px}.auth-tab{-webkit-appearance:none;appearance:none;background:#0000;border:none;border-radius:8px;border-radius:var(--radius-sm);color:#64748b;color:var(--muted);cursor:pointer;font-size:13px;font-weight:600;padding:8px;transition:all .18s ease;transition:all var(--transition)}.auth-tab.active{background:#fff;background:var(--card-bg);box-shadow:0 1px 2px #0000000a;box-shadow:var(--shadow-sm);color:#0f172a;color:var(--text)}.auth-form{grid-gap:14px;display:grid;gap:14px}.auth-field{grid-gap:5px;display:grid;gap:5px}.auth-label{color:#64748b;color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.auth-input{background:#fff;background:var(--input-bg);border:1.5px solid #e2e8f0;border:1.5px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);color:#0f172a;color:var(--text);font-size:14px;outline:none;padding:10px 14px;transition:border-color .18s ease,box-shadow .18s ease;transition:border-color var(--transition),box-shadow var(--transition);width:100%}.auth-input::placeholder{color:#64748b;color:var(--muted);opacity:.6}.auth-input:focus{border-color:#6366f1;border-color:var(--primary);box-shadow:0 0 0 3px #6366f126}.auth-btn{-webkit-appearance:none;appearance:none;background:#6366f1;background:var(--primary);border:none;border-radius:12px;border-radius:var(--radius-md);box-shadow:0 2px 8px #6366f14d;color:#fff;cursor:pointer;font-size:14px;font-weight:700;margin-top:4px;padding:11px 16px;transition:all .18s ease;transition:all var(--transition)}.auth-btn:hover{background:#4f46e5;background:var(--primary-2);box-shadow:0 4px 14px #6366f166;transform:translateY(-1px)}.auth-btn:active{transform:translateY(0)}.auth-btn:disabled{box-shadow:none;cursor:not-allowed;opacity:.5}.auth-message{border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:8px;border-radius:var(--radius-sm);font-size:13px;padding:10px 14px}.auth-message.error{background:#fef2f2;border-color:#fecaca;color:#991b1b}.auth-message.info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}.theme-dark .auth-message.error{background:#dc26261a;border-color:#dc262633;color:#fca5a5}.theme-dark .auth-message.info{background:#3b82f61a;border-color:#3b82f633;color:#93c5fd}.auth-footer{margin-top:16px;text-align:center}.auth-link{-webkit-appearance:none;appearance:none;background:#0000;border:none;border-radius:8px;border-radius:var(--radius-sm);color:#6366f1;color:var(--primary);cursor:pointer;font-size:13px;font-weight:600;padding:6px 8px;transition:all .18s ease;transition:all var(--transition)}.auth-link:hover{background:#6366f114;background:var(--primary-soft)}.home-grid>*,.lb-list>*,.stat-grid>*{min-width:0}.leaderboard-toggle-btn{display:none}.leaderboard-hidden{display:block}.leaderboard .lb-list{grid-gap:6px;display:grid;gap:6px}.lb-row{grid-gap:8px;align-items:center;background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);color:inherit;cursor:pointer;display:grid;font:inherit;gap:8px;grid-template-columns:32px 30px 1fr auto auto;padding:8px 12px;text-align:left;transition:all .18s ease;transition:all var(--transition);width:100%}.lb-row:hover{background:#6366f114;background:var(--primary-soft);box-shadow:0 4px 12px #0000000f;box-shadow:var(--shadow-md);transform:translateY(-1px)}.lb-rank{background:#64748b;background:var(--muted);border-radius:999px;color:#fff;display:grid;font-size:12px;font-weight:800;height:26px;place-items:center;width:26px}.lb-rank.gold{background:linear-gradient(135deg,#f59e0b,#d97706)}.lb-rank.silver{background:linear-gradient(135deg,#94a3b8,#64748b)}.lb-rank.bronze{background:linear-gradient(135deg,#d97706,#92400e)}.lb-avatar{background:linear-gradient(135deg,#334155,#475569);border-radius:999px;color:#fff;display:grid;font-size:11px;font-weight:700;height:28px;place-items:center;width:28px}.lb-name{color:#0f172a;color:var(--text);font-size:14px;font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.completion-grid{grid-gap:4px;display:grid;gap:4px;grid-template-columns:repeat(7,16px)}.completion-square{background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:4px;height:16px;transition:background .18s ease;transition:background var(--transition);width:16px}.completion-square.solved{background:#16a34a;background:var(--success);border-color:#15803d}.profile-header{background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:20px;border-radius:var(--radius-xl);box-shadow:0 1px 2px #0000000a;box-shadow:var(--shadow-sm);margin-bottom:0}.profile-banner{height:100px;width:100%}.profile-header-content{align-items:flex-start;display:flex;gap:16px;margin-top:-36px;padding:0 24px 16px}.profile-avatar-wrapper{flex-shrink:0;position:relative}.profile-avatar-lg{border:4px solid #fff;border:4px solid var(--card-bg);border-radius:999px;box-shadow:0 4px 12px #0000000f;box-shadow:var(--shadow-md);color:#fff;display:grid;font-size:26px;font-weight:800;height:72px;place-items:center;width:72px}.badge-admin-float{background:#dc2626;background:var(--danger);border:2px solid #fff;border:2px solid var(--card-bg);border-radius:999px;bottom:-2px;color:#fff;display:inline-flex;font-size:10px;font-weight:700;padding:2px 7px;position:absolute;right:-6px}.profile-identity{min-width:0;padding-top:40px}.profile-name{font-size:20px;font-weight:700;line-height:1.3;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-bio{font-size:14px;line-height:1.4;margin:4px 0 0}.profile-bio,.profile-meta{color:#64748b;color:var(--muted)}.profile-meta{align-items:center;display:flex;flex-wrap:wrap;font-size:12px;gap:8px;margin-top:6px}.profile-meta-dot{background:#64748b;background:var(--muted);border-radius:999px;height:3px;width:3px}.profile-quick-stats{align-items:center;border-top:1px solid #e2e8f0;border-top:1px solid var(--card-border);display:flex;gap:0;justify-content:center;padding:14px 24px}.profile-qstat{flex:1 1;text-align:center}.profile-qstat-value{color:#6366f1;color:var(--primary);display:block;font-size:20px;font-weight:700;line-height:1.2}.profile-qstat-label{color:#64748b;color:var(--muted);display:block;font-size:11px;font-weight:600;letter-spacing:.04em;margin-top:2px;text-transform:uppercase}.profile-qstat-divider{background:#e2e8f0;background:var(--card-border);flex-shrink:0;height:32px;width:1px}.profile-tabs{-webkit-overflow-scrolling:touch;display:flex;gap:4px;overflow-x:auto;padding:12px 0}.profile-tab{align-items:center;-webkit-appearance:none;appearance:none;background:#fff;background:var(--card-bg);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:999px;color:#64748b;color:var(--muted);cursor:pointer;display:flex;font-size:13px;font-weight:600;gap:5px;padding:8px 16px;transition:all .18s ease;transition:all var(--transition);white-space:nowrap}.profile-tab:hover{background:#6366f114;background:var(--primary-soft);color:#0f172a;color:var(--text)}.profile-tab.active{background:#6366f1;border-color:#6366f1;border-color:var(--primary);color:#fff}.profile-tab-content{min-height:200px}.section-title{font-size:15px;font-weight:600;margin:0 0 12px}.btn-link{-webkit-appearance:none;appearance:none;background:none;border:none;border-radius:8px;border-radius:var(--radius-sm);color:#6366f1;color:var(--primary);cursor:pointer;font-size:13px;font-weight:600;padding:4px 8px;transition:all .18s ease;transition:all var(--transition)}.btn-link:hover{background:#6366f114;background:var(--primary-soft)}.field-label{color:#64748b;color:var(--muted);font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:6px;text-transform:uppercase}.color-picker-grid{display:flex;flex-wrap:wrap;gap:6px}.color-swatch{-webkit-appearance:none;appearance:none;border:2px solid #0000;border-radius:999px;cursor:pointer;height:28px;transition:all .18s ease;transition:all var(--transition);width:28px}.color-swatch:hover{transform:scale(1.15)}.color-swatch.selected{border-color:#0f172a;border-color:var(--text);box-shadow:0 0 0 2px #fff,0 0 0 4px #0f172a;box-shadow:0 0 0 2px var(--card-bg),0 0 0 4px var(--text)}.profile-avatar-preview{border-radius:999px;color:#fff;display:grid;font-size:16px;font-weight:800;height:40px;place-items:center;width:40px}.completion-grid-wrapper{align-items:flex-start;display:flex;gap:8px}.completion-grid-labels{grid-gap:4px;display:grid;gap:4px;grid-template-rows:repeat(7,16px)}.completion-grid-label{color:#64748b;color:var(--muted);display:grid;font-size:10px;height:16px;place-items:center;width:16px}.completion-square-mini{background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:3px;display:inline-block;height:10px;vertical-align:middle;width:10px}.completion-square-mini.solved{background:#16a34a;background:var(--success);border-color:#15803d}.achievement-card{align-items:center;background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);display:flex;gap:10px;padding:10px 14px;transition:all .18s ease;transition:all var(--transition)}.achievement-card.earned{background:#6366f114;background:var(--primary-soft);border-color:#6366f133}.achievement-icon{flex-shrink:0;font-size:20px}.achievement-icon-lg{flex-shrink:0;font-size:28px;text-align:center;width:40px}.achievement-info{flex:1 1;min-width:0}.achievement-name{font-size:14px;font-weight:600}.achievement-desc{font-size:12px}.achievement-date,.achievement-desc{color:#64748b;color:var(--muted);margin-top:2px}.achievement-date{font-size:11px}.achievement-card-full{align-items:center;border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:12px;border-radius:var(--radius-md);display:flex;gap:12px;padding:14px 16px;transition:all .18s ease;transition:all var(--transition)}.achievement-card-full.earned{background:#6366f114;background:var(--primary-soft);border-color:#6366f133}.achievement-card-full.locked{background:#f1f5f9;background:var(--surface-subtle);opacity:.6}.achievement-badge-earned{background:#16a34a1a;border:1px solid #16a34a33;border-radius:999px;color:#16a34a;color:var(--success);font-size:11px;font-weight:700;padding:3px 10px;white-space:nowrap}.achievement-badge-locked{background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:999px;color:#64748b;color:var(--muted);font-size:11px;font-weight:600;padding:3px 10px;white-space:nowrap}.achievements-progress{align-items:center;display:flex;gap:12px}.achievements-progress-bar{background:#f1f5f9;background:var(--surface-subtle);border:1px solid #e2e8f0;border:1px solid var(--card-border);border-radius:999px;flex:1 1;height:8px;overflow:hidden}.achievements-progress-fill{background:linear-gradient(90deg,#6366f1,#16a34a);background:linear-gradient(90deg,var(--primary),var(--success));border-radius:999px;height:100%;transition:width .5s ease}.achievements-progress-text{color:#64748b;color:var(--muted);font-size:12px;font-weight:600;white-space:nowrap}.achievement-history-row{align-items:center;background:#f1f5f9;background:var(--surface-subtle);border-radius:8px;border-radius:var(--radius-sm);display:flex;font-size:13px;gap:8px;padding:8px 12px}.race-level-badge{background:#6366f114;background:var(--primary-soft);border-radius:999px;color:#6366f1;color:var(--primary);font-size:11px;font-weight:600;padding:2px 8px}.forum-day-nav{align-items:center;display:flex;gap:12px;justify-content:space-between;margin-bottom:16px}.forum-day-btn{font-size:13px;padding:8px 14px}.forum-day-label{align-items:center;display:flex;flex-direction:column;font-size:15px;font-weight:600;gap:2px}.forum-day-icon{font-size:20px}.forum-post-count{color:#64748b;color:var(--muted);font-size:12px;font-weight:500}.forum-compose{margin-bottom:16px}.forum-compose-avatar{border-radius:999px;color:#fff;display:grid;flex-shrink:0;font-size:14px;font-weight:700;height:36px;place-items:center;width:36px}.forum-textarea{min-height:48px;resize:vertical}.forum-posts{grid-gap:10px;display:grid;gap:10px}.forum-post{padding:16px}.forum-post-header{align-items:center;display:flex;gap:10px;margin-bottom:10px}.forum-post-avatar{-webkit-appearance:none;appearance:none;border:none;border-radius:999px;color:#fff;cursor:pointer;display:grid;flex-shrink:0;font-size:13px;font-weight:700;height:36px;place-items:center;transition:all .18s ease;transition:all 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