:root{--primary:#10b981;--primary-hover:#059669;--primary-light:#ecfdf5;--primary-shadow:#047857;--accent-gold:#f59e0b;--accent-gold-hover:#d97706;--accent-gold-light:#fef3c7;--accent-gold-shadow:#b45309;--jade-green:#10b981;--jade-green-light:#d1fae5;--jade-green-shadow:#047857;--danger:#ef4444;--danger-hover:#dc2626;--danger-light:#fef2f2;--danger-shadow:#991b1b;--dragon-blue:#3b82f6;--dragon-blue-light:#dbeafe;--bg-page:#f8fafc;--bg-card:#fff;--bg-input:#f1f5f9;--border-card:#e2e8f0;--border-focus:#10b981;--text-main:#0f172a;--text-muted:#64748b;--text-sub:#94a3b8;--text-chinese:#1e293b;--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--radius-full:9999px;--shadow-sm:0 2px 0 var(--border-card);--shadow-card:0 10px 25px -5px #0000000d, 0 8px 10px -6px #0000000d;--shadow-btn-primary:0 4px 0 var(--primary-shadow);--shadow-btn-gold:0 4px 0 var(--accent-gold-shadow);--shadow-btn-green:0 4px 0 var(--jade-green-shadow);--shadow-btn-danger:0 4px 0 var(--danger-shadow);--shadow-btn-neutral:0 4px 0 #cbd5e1;--font-body:"Be Vietnam Pro", system-ui, -apple-system, sans-serif;--font-hanzi:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-page);color:var(--text-main);-webkit-font-smoothing:antialiased;background-image:radial-gradient(#a7f3d0 .85px,#0000 .85px),radial-gradient(#fed7aa .85px,#f8fafc .85px);background-position:0 0,17px 17px;background-size:34px 34px;min-height:100vh;line-height:1.5}.hanzi{font-family:var(--font-hanzi)}.btn-gamified{border-radius:var(--radius-md);cursor:pointer;-webkit-user-select:none;user-select:none;border:2px solid #0000;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:1rem;font-weight:700;text-decoration:none;transition:transform 80ms,box-shadow 80ms,filter .15s;display:inline-flex}.btn-gamified:active{transform:translateY(4px);box-shadow:none!important}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:var(--shadow-btn-primary)}.btn-primary:hover:not(:disabled){filter:brightness(1.08)}.btn-gold{background-color:var(--accent-gold);color:#fff;box-shadow:var(--shadow-btn-gold)}.btn-gold:hover:not(:disabled){filter:brightness(1.08)}.btn-green{background-color:var(--jade-green);color:#fff;box-shadow:var(--shadow-btn-green)}.btn-danger{background-color:var(--danger);color:#fff;box-shadow:var(--shadow-btn-danger)}.btn-danger:hover:not(:disabled){filter:brightness(1.08)}.btn-outline{color:var(--text-main);box-shadow:var(--shadow-btn-neutral);background-color:#fff;border:2px solid #e2e8f0}.btn-outline:hover:not(:disabled){background-color:#f8fafc;border-color:#cbd5e1}.btn-gamified:disabled{opacity:.6;cursor:not-allowed;filter:grayscale(.5);transform:none}.game-card{background:var(--bg-card);border-radius:var(--radius-lg);border:2px solid var(--border-card);box-shadow:0 8px 0 var(--border-card);transition:transform .15s,box-shadow .15s}@keyframes float{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-8px)rotate(1deg)}}.animate-float{animation:4s ease-in-out infinite float}@keyframes pulseGlow{0%,to{opacity:.8;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}.pulse-glow{animation:2.5s infinite pulseGlow}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}