:root{color:#14201f;background:#eef5f2;font-family:Inter,Noto Sans TC,Microsoft JhengHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;line-height:1.5;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(120deg,rgba(46,125,111,.12),transparent 42%),linear-gradient(180deg,#f7fbf9,#e9f1ef)}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{width:min(1180px,100%);margin:0 auto;padding:18px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand-mark,.success-mark{display:grid;flex:0 0 auto;width:48px;height:48px;place-items:center;border-radius:16px;color:#fff;background:#1f6f65;box-shadow:0 12px 32px #105b533d}.brand h1,.section-heading h2,.panel h2,.session-selector h3{margin:0;letter-spacing:0}.brand h1{font-size:clamp(1.25rem,5vw,2rem);line-height:1.1}.eyebrow{margin:0 0 4px;color:#52615f;font-size:.78rem;font-weight:700}.status-pill{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:6px 10px;border:1px solid #cae0dc;border-radius:999px;color:#1f6f65;background:#fff;font-size:.82rem;font-weight:800}.status-pill span{width:8px;height:8px;border-radius:999px;background:#2ea36f}.panel{border:1px solid #d7e6e2;border-radius:8px;background:#fffffff0;box-shadow:0 18px 50px #193f3b1a}.login-panel,.confirmation-panel,.panel:not(.sidebar):not(.calendar-panel){padding:clamp(18px,4vw,32px)}.login-panel{width:min(560px,100%);margin:7vh auto 0}.section-heading{display:flex;align-items:flex-start;gap:12px;margin-bottom:22px}.section-heading>svg{flex:0 0 auto;color:#1f6f65}.section-heading h2,.panel h2{font-size:clamp(1.35rem,4vw,2rem);line-height:1.18}.form-grid{display:grid;gap:14px}label{display:grid;gap:7px;color:#344542;font-weight:800}input{width:100%;min-height:52px;border:1px solid #bdd2ce;border-radius:8px;padding:0 14px;color:#14201f;background:#f9fcfb;outline:none}input:focus{border-color:#1f6f65;box-shadow:0 0 0 4px #1f6f651f}.form-error{margin:0;color:#b3342b;font-weight:700}.primary-button,.ghost-button,.danger-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:8px;padding:0 16px;border:1px solid transparent;font-weight:900}.primary-button{color:#fff;background:#1f6f65}.primary-button:hover:not(:disabled){background:#185c54}.primary-button:disabled{color:#7c918c;background:#d9e6e3}.ghost-button{color:#1f6f65;border-color:#bdd9d4;background:#fff}.danger-button{color:#a52722;border-color:#f0c7c4;background:#fff7f6}.wide{width:100%}.choice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.choice-card{display:grid;min-height:154px;gap:9px;align-content:start;border:1px solid #d3e2df;border-radius:8px;padding:16px;color:#203230;text-align:left;background:#f9fcfb}.choice-card.active{border-color:#1f6f65;background:#edf8f5;box-shadow:inset 0 0 0 2px #1f6f651f}.choice-card span{width:fit-content;border-radius:999px;padding:4px 8px;color:#155c54;background:#dff1ed;font-size:.76rem;font-weight:900}.choice-card strong{font-size:1.08rem}.choice-card small{color:#536461;font-weight:700}.session-selector{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:20px 0;padding:16px;border:1px solid #d7e6e2;border-radius:8px;background:#f7fbfa}.session-selector h3{font-size:1.05rem}.segmented{display:grid;grid-template-columns:repeat(3,minmax(68px,1fr));gap:6px;padding:5px;border:1px solid #d2e1dd;border-radius:8px;background:#fff}.segmented button{min-height:40px;border:0;border-radius:6px;color:#536461;background:transparent;font-weight:900}.segmented button.active{color:#fff;background:#1f6f65}.calendar-layout{display:grid;grid-template-columns:minmax(260px,320px) minmax(0,1fr);gap:16px;align-items:start}.sidebar,.calendar-panel{padding:18px}.rule-list{display:grid;gap:8px;margin:16px 0}.rule-list span{border-radius:8px;padding:9px 10px;color:#30433f;background:#eef7f4;font-weight:800}.mini-summary{display:grid;gap:9px;min-height:112px;margin-bottom:14px}.mini-summary p{margin:0;color:#64736f;font-weight:700}.mini-summary div,.appointment-list div{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;border:1px solid #d7e6e2;border-radius:8px;padding:10px;background:#fff}.mini-summary span,.appointment-list span{color:#2b3d3a;font-weight:800}.mini-summary small,.appointment-list small{color:#1f6f65;font-weight:900}.sidebar .ghost-button{margin-top:8px}.calendar-header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}.week-controls{display:flex;gap:8px}.week-controls button{display:grid;width:42px;height:42px;place-items:center;border:1px solid #cfe0dc;border-radius:8px;color:#1f6f65;background:#fff}.week-controls button:disabled{color:#a5b5b1;background:#edf3f1}.calendar-scroll{overflow-x:auto;padding-bottom:8px}.calendar-grid{display:grid;grid-template-columns:78px repeat(5,minmax(124px,1fr));gap:6px;min-width:720px}.grid-head,.time-label{min-height:58px;border-radius:8px;background:#eef7f4}.grid-head{display:grid;align-content:center;justify-items:center;color:#1e3733}.grid-head span{color:#63716e;font-weight:800}.time-head{color:#1f6f65}.time-label{display:grid;place-items:center;color:#52615f;font-weight:900}.slot-cell{display:grid;align-content:center;justify-items:center;gap:2px;min-height:58px;border:1px solid #d5e4e0;border-radius:8px;padding:6px;color:#263a36;background:#fff}.slot-cell.available:hover{border-color:#1f6f65;background:#eff9f6}.slot-cell.selected{color:#fff;border-color:#1f6f65;background:#1f6f65}.slot-cell.disabled{color:#8a9995;border-color:#e0e9e6;background:#f4f8f7}.slot-cell strong{font-size:.84rem}.slot-cell span{max-width:100%;overflow-wrap:anywhere;font-size:.74rem;font-weight:800;text-align:center}.confirmation-panel{width:min(680px,100%);margin:4vh auto 0;text-align:center}.success-mark{margin:0 auto 14px;background:#2f8a62}.confirmation-copy{width:min(520px,100%);margin:10px auto 20px;color:#52615f;font-weight:700}.appointment-list{display:grid;gap:10px;text-align:left}.confirmation-actions{display:flex;justify-content:center;gap:10px;margin-top:18px}@media(max-width:840px){.app-shell{padding:12px}.topbar{align-items:flex-start}.brand-mark{width:42px;height:42px;border-radius:12px}.choice-grid,.calendar-layout{grid-template-columns:1fr}.choice-card{min-height:128px}.session-selector,.calendar-header,.confirmation-actions{align-items:stretch;flex-direction:column}.calendar-grid{grid-template-columns:70px repeat(5,118px);min-width:660px}.mini-summary div,.appointment-list div{grid-template-columns:1fr}}@media(max-width:430px){.status-pill{display:none}.login-panel{margin-top:24px}.section-heading h2,.panel h2{font-size:1.28rem}}