:root{--bg-primary:#F8FAFC;--bg-surface:#FFFFFF;--text-primary:#0F172A;--text-secondary:#334155;--text-muted:#475569;--brand-primary:#1D4ED8;--brand-primary-hover:#1E40AF;--brand-secondary:#0D9488;--border-color:#CBD5E1;--border-focus:#2563EB;--font-size-base:18px;--font-size-lg:22px;--font-size-xl:26px;--font-size-2xl:32px;--line-height-base:1.6;--min-touch-size:48px}*{box-sizing:border-box;margin:0;padding:0}html{font-size:var(--font-size-base);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans TC,sans-serif;line-height:var(--line-height-base);letter-spacing:.02em;-webkit-font-smoothing:antialiased}body,html{background-color:var(--bg-primary);color:var(--text-primary)}body{font-size:1rem;min-height:100vh;display:flex;flex-direction:column}:focus-visible{outline:3px solid var(--border-focus);outline-offset:3px;border-radius:4px}.accessible-btn,a.button-link,button{display:inline-flex;align-items:center;justify-content:center;min-width:var(--min-touch-size);min-height:var(--min-touch-size);padding:12px 24px;font-size:1.1rem;font-weight:600;border-radius:12px;border:2px solid transparent;cursor:pointer;transition:all .2s ease-in-out;text-decoration:none;touch-action:manipulation}.accessible-btn.primary-btn{background-color:var(--brand-primary);color:#FFFFFF;border-color:var(--brand-primary)}.accessible-btn.primary-btn:hover{background-color:var(--brand-primary-hover)}.accessible-btn.secondary-btn{background-color:#FFFFFF;color:var(--brand-primary);border-color:var(--brand-primary)}.accessible-btn.secondary-btn:hover{background-color:#EFF6FF}.glass-card{background:linear-gradient(135deg,rgba(255,255,255,.98),rgba(241,245,249,.95));backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:2px solid #e2e8f0;border-radius:20px;padding:28px;box-shadow:0 10px 25px -5px rgba(0,0,0,.06),0 8px 10px -6px rgba(0,0,0,.03);transition:transform .2s ease,box-shadow .2s ease}.glass-card:hover{border-color:#CBD5E1;box-shadow:0 14px 30px -5px rgba(0,0,0,.09),0 10px 12px -6px rgba(0,0,0,.04)}.site-header{background-color:var(--bg-surface);border-bottom:2px solid var(--border-color);padding:24px 20px;text-align:center}.header-container{max-width:900px;margin:0 auto}.site-title{font-size:var(--font-size-2xl);font-weight:800;color:var(--brand-primary);margin-bottom:4px}.site-subtitle{font-size:var(--font-size-lg);color:var(--text-secondary)}.main-content{flex:1 1;max-width:900px;width:100%;margin:0 auto;padding:32px 20px}.site-footer{background-color:var(--bg-surface);border-top:2px solid var(--border-color);padding:24px 20px;text-align:center;font-size:.95rem;color:var(--text-muted)}.container{gap:24px}.container,.hero-section{display:flex;flex-direction:column}.hero-section{gap:16px}.hero-title{font-size:var(--font-size-xl);font-weight:700;color:var(--text-primary)}.hero-description{font-size:1.15rem;color:var(--text-secondary)}.action-group{display:flex;gap:16px;flex-wrap:wrap;margin-top:8px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:20px;gap:20px}.feature-card h3{font-size:var(--font-size-lg);color:var(--brand-secondary);margin-bottom:8px}.feature-card p{color:var(--text-secondary)}.accessible-input,.accessible-select{width:100%;min-height:var(--min-touch-size);padding:12px 16px;font-size:1.1rem;font-weight:500;color:var(--text-primary);background-color:#FFFFFF;border:2px solid var(--border-color);border-radius:12px;transition:border-color .2s ease,box-shadow .2s ease;-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}.accessible-input:focus,.accessible-select:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(37,99,235,.2);outline:none}.dynamic-tooltip{background:#EFF6FF;border-left:6px solid var(--brand-primary);border-radius:12px;padding:16px 20px;margin-top:10px;font-size:1.05rem;color:#1E3A8A;box-shadow:0 2px 8px rgba(29,78,216,.08);animation:fadeIn .3s ease-in-out}.dynamic-tooltip strong{color:#1E40AF;font-weight:700}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.warning-banner{background:#FFFBEB;border:2px solid #f59e0b;border-radius:16px;padding:20px 24px;color:#78350F;font-size:1.1rem;line-height:1.6;box-shadow:0 4px 12px rgba(245,158,11,.1)}.warning-banner h3{color:#92400E;font-size:1.25rem;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:8px}.status-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:9999px;font-size:1rem;font-weight:700;white-space:nowrap}.status-badge.eligible{background-color:#DCFCE7;color:#166534;border:1px solid #86efac}.status-badge.not-eligible{background-color:#F1F5F9;color:#475569;border:1px solid #cbd5e1}.status-badge.scenario-guidance{background-color:#FEF3C7;color:#92400E;border:1px solid #fde68a}.whatif-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:20px;gap:20px;margin-top:16px}.scenario-card{background:linear-gradient(145deg,#FFFFFF,#F8FAFC);border:2px solid #e2e8f0;border-radius:16px;padding:20px;box-shadow:0 4px 12px rgba(0,0,0,.03);display:flex;flex-direction:column;gap:12px}.scenario-card.scenario-a{border-top:6px solid #2563eb}.scenario-card.scenario-b{border-top:6px solid #0d9488}.scenario-tag{font-size:.95rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em}.scenario-card.scenario-a .scenario-tag{color:#2563EB}.scenario-card.scenario-b .scenario-tag{color:#0D9488}.toggle-group{display:flex;gap:12px;flex-wrap:wrap}.toggle-btn{flex:1 1;min-width:120px;min-height:48px;padding:12px 16px;font-size:1.05rem;font-weight:600;border-radius:12px;border:2px solid var(--border-color);background-color:#FFFFFF;color:var(--text-primary);cursor:pointer;transition:all .2s ease;text-align:center}.toggle-btn:hover{border-color:var(--brand-primary);background-color:#EFF6FF}.toggle-btn.active{border-color:var(--brand-primary);background-color:var(--brand-primary);color:#FFFFFF;font-weight:700;box-shadow:0 4px 12px rgba(29,78,216,.25)}.guide-card{background:linear-gradient(135deg,#F0FDF4,#ECFDF5);border:2px solid #a7f3d0;border-radius:20px;padding:28px;margin-top:24px}.guide-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:20px;gap:20px;margin-top:20px}.guide-item{background:#FFFFFF;border-radius:14px;padding:20px;border:1px solid #a7f3d0;box-shadow:0 2px 6px rgba(0,0,0,.04)}.guide-item h4{font-size:1.15rem;color:#065F46;margin-bottom:8px;display:flex;align-items:center;gap:8px}.guide-item p,.guide-item ul{font-size:1.05rem;color:#1E293B;line-height:1.6}.guide-item ul{padding-left:20px;margin-top:8px}.guide-item li{margin-bottom:6px}