@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Noto+Sans+TC:wght@300;400;500;700&display=swap";:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--glass-bg: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .07);--glass-highlight: rgba(255, 255, 255, .05);--text-primary: #f3f4f6;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent-primary: #6366f1;--accent-secondary: #3b82f6;--accent-gradient: linear-gradient(135deg, #6366f1, #3b82f6);--accent-gradient-hover: linear-gradient(135deg, #4f46e5, #2563eb);--success: #10b981;--success-glow: rgba(16, 185, 129, .2);--danger: #ef4444;--danger-glow: rgba(239, 68, 68, .2);--warning: #f59e0b;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .2), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .3), 0 10px 10px -5px rgba(0, 0, 0, .04);--font-sans: "Outfit", "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px}[data-theme=light]{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(0, 0, 0, .08);--glass-highlight: rgba(0, 0, 0, .02);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--accent-primary: #4f46e5;--accent-secondary: #2563eb;--accent-gradient: linear-gradient(135deg, #4f46e5, #2563eb);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .02);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .02);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 10px 10px -5px rgba(0, 0, 0, .03)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);min-height:100vh;line-height:1.5;overflow-x:hidden;transition:background-color .3s ease,color .3s ease}.bg-ambient-lights{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:-1;pointer-events:none;overflow:hidden;background:radial-gradient(circle at 10% 20%,rgba(99,102,241,.05) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(59,130,246,.05) 0%,transparent 40%)}[data-theme=light] .bg-ambient-lights{background:radial-gradient(circle at 10% 20%,rgba(99,102,241,.02) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(59,130,246,.02) 0%,transparent 40%)}.glass{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);box-shadow:var(--shadow-lg);border-radius:var(--radius-lg)}.glass-card{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-md);transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease,border-color .3s ease}.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:#6366f133}h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:-.02em}.title-gradient{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-sans);font-weight:500;padding:10px 20px;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);text-decoration:none}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 12px #6366f14d}.btn-primary:hover{opacity:.95;transform:translateY(-1px);box-shadow:0 6px 16px #6366f166}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text-primary)}.btn-secondary:hover{background:var(--glass-highlight);border-color:var(--text-secondary)}.btn-danger{background:var(--danger);color:#fff;box-shadow:0 4px 12px var(--danger-glow)}.btn-danger:hover{opacity:.95;transform:translateY(-1px)}.btn-text{background:transparent;color:var(--text-secondary);padding:6px 12px}.btn-text:hover{color:var(--text-primary);background:var(--glass-bg)}.form-group{margin-bottom:20px}.form-label{display:block;font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.input{width:100%;padding:12px 16px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-sans);font-size:1rem;outline:none;transition:all .2s ease}.input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f126}.input::placeholder{color:var(--text-muted)}.input-checkbox{width:18px;height:18px;accent-color:var(--accent-primary);cursor:pointer}.container{max-width:1200px;margin:0 auto;padding:0 20px}.grid{display:grid;gap:24px}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}@media(max-width:900px){.grid-cols-3,.grid-cols-4{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.grid-cols-2,.grid-cols-3,.grid-cols-4{grid-template-columns:1fr}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .4s cubic-bezier(.16,1,.3,1) forwards}.collapsible-container{border:1px solid var(--glass-border);border-radius:var(--radius-md);overflow:hidden;background:#0000001a;margin-top:12px}.collapsible-trigger{padding:12px 16px;background:var(--glass-bg);display:flex;justify-content:space-between;align-items:center;cursor:pointer;-webkit-user-select:none;user-select:none;font-weight:500;transition:background .2s ease}.collapsible-trigger:hover{background:var(--glass-highlight)}.collapsible-content{padding:16px;border-top:1px solid var(--glass-border);animation:fadeIn .3s ease}@media print{body{background:#fff!important;color:#000!important;font-size:12pt;font-family:Noto Sans TC,sans-serif!important}.bg-ambient-lights,header,nav,.no-print,.btn,.theme-toggle,.collapsible-trigger svg,.sidebar,.filters-container{display:none!important}.container{max-width:100%!important;width:100%!important;margin:0!important;padding:0!important}.print-page{page-break-after:always}.print-solution-mode .collapsible-content{display:block!important;border-top:1px dashed #cccccc!important;margin-top:10px!important;padding-top:10px!important}.print-practice-mode .collapsible-container,.print-practice-mode .collapsible-content,.print-practice-mode .answer-section{display:none!important}.mistake-card-print{border:1px solid #000000!important;border-radius:4px!important;padding:15px!important;margin-bottom:25px!important;page-break-inside:avoid!important;background:transparent!important;box-shadow:none!important}.mistake-card-print h3{border-bottom:1px solid #000000!important;padding-bottom:5px!important;margin-bottom:10px!important}.print-grid{display:grid!important;grid-template-columns:1fr!important;gap:15px!important}img{max-width:80%!important;max-height:4in!important;display:block!important;margin:10px 0!important;page-break-inside:avoid!important}}