:root {
  color-scheme: light;
  --orbit-page: #fff;
  --orbit-text: #191919;
  --orbit-muted: #626262;
  --orbit-line: #e5e5e5;
  --orbit-tint: #f5f5f5;
  --orbit-section-gap: 3rem;
  --orbit-section-inset: 2rem;
  --orbit-heading-gap: 1.5rem;
  --orbit-copy-gap: 1rem;
  --orbit-small-gap: .75rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 100%;
  line-height: 1.65;
  color: var(--orbit-text);
  background: var(--orbit-page);
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
body { margin: 0; }
h1, h2, h3, p, figure, dl { margin: 0; }
img { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; }
button, summary { cursor: pointer; }
a { color: inherit; text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--orbit-text);
  outline-offset: 4px;
}

.orbit-page {
  width: min(100%, 64rem);
  margin-inline: auto;
  padding: 2.75rem 2.5rem 5rem;
  overflow-wrap: anywhere;
}

.skip-link { position: absolute; top: .75rem; left: 1rem; transform: translateY(-200%); }
.skip-link:focus { z-index: 1; transform: none; background: var(--orbit-page); padding: .5rem 1rem; }
.context { padding-bottom: 1.25rem; margin-bottom: var(--orbit-section-inset); border-bottom: 1px solid var(--orbit-line); font-size: .875rem; }
.context > p:first-child { font-weight: 500; }
.metadata { color: var(--orbit-muted); font-size: .875rem; }
.context .metadata { margin-top: .125rem; }
.page-heading { max-width: 44rem; margin-bottom: var(--orbit-section-inset); }
h1 { font-size: clamp(2.25rem, 4vw, 3rem); line-height: 1.12; letter-spacing: -.04em; font-weight: 500; text-wrap: balance; }
h2 { font-size: 1.625rem; line-height: 1.25; letter-spacing: -.025em; font-weight: 500; }
h3 { font-size: 1.125rem; line-height: 1.4; letter-spacing: -.015em; font-weight: 500; }
.lead { font-size: 1.125rem; line-height: 1.65; margin-top: var(--orbit-heading-gap); }
.section { margin-top: var(--orbit-section-gap); padding-top: var(--orbit-section-inset); border-top: 1px solid var(--orbit-line); }
.section > h2 { margin-bottom: var(--orbit-heading-gap); }
.section > p + p { margin-top: var(--orbit-copy-gap); }
.section > p { max-width: 44rem; }
.content-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--orbit-section-inset); }
.content-grid > * { min-width: 0; }

.facts > div { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; padding: 1rem 0; border-bottom: 1px solid var(--orbit-line); }
.facts > div:first-child { padding-top: 0; }
.facts > div:last-child { border-bottom: 0; }
.facts dt { flex: 1 1 5.5rem; min-width: 0; color: var(--orbit-muted); }
.facts dd { flex: 2.5 1 12rem; min-width: 0; margin: 0; }

.item-list { margin: 0; padding-left: 1.5rem; }
.item-list > li { padding: 1.25rem 0 1.25rem .5rem; border-bottom: 1px solid var(--orbit-line); }
.item-list > li:first-child { padding-top: 0; }
.item-list > li:last-child { padding-bottom: 0; border-bottom: 0; }
.item-list p, .timeline p { margin-top: var(--orbit-small-gap); max-width: 44rem; }
.item-list .metadata { margin-top: .375rem; }
.recommendation { border: 1px solid var(--orbit-line); border-radius: .875rem; padding: 1.5rem; }
.recommendation > * + * { margin-top: var(--orbit-small-gap); }

.feature-image { margin-block: var(--orbit-section-inset); }
.feature-image img { width: 100%; aspect-ratio: 2.8; object-fit: cover; border-radius: .875rem; }
.feature-image figcaption { color: var(--orbit-muted); font-size: .875rem; line-height: 1.5; margin-top: .625rem; }
.product-image, .feature-image .product-image { width: 100%; max-height: 18rem; object-fit: contain; }

.table-scroll { overflow-x: auto; border: 1px solid var(--orbit-line); border-radius: .75rem; }
.comparison { width: 100%; border-collapse: collapse; text-align: left; font-size: .875rem; }
.comparison caption { text-align: left; font-size: 1rem; font-weight: 500; padding: 1rem 1.25rem; }
.comparison th, .comparison td { padding: 1rem 1.25rem; border-bottom: 1px solid var(--orbit-line); vertical-align: top; min-width: 9rem; }
.comparison th { font-weight: 500; }
.comparison thead, .comparison .recommended { background: var(--orbit-tint); }
.comparison tbody tr:last-child > * { border-bottom: 0; }

.timeline { margin: 0; padding: 0; list-style: none; }
.timeline > li { display: grid; grid-template-columns: minmax(3.5rem, 1fr) minmax(0, 7fr); gap: 1.25rem; }
.timeline > li > :first-child { font-size: .875rem; color: var(--orbit-muted); font-variant-numeric: tabular-nums; }
.timeline > li > div { padding: 0 0 var(--orbit-section-inset) 1.25rem; border-left: 1px solid var(--orbit-line); }
.timeline > li:last-child > div { padding-bottom: 0; }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li + li { border-top: 1px solid var(--orbit-line); }
.checklist label { display: flex; align-items: flex-start; gap: .75rem; padding: .875rem 0; cursor: pointer; }
.checklist input { width: 1.125rem; height: 1.125rem; flex: none; margin: .25rem 0 0; accent-color: var(--orbit-text); }
.checklist input:checked + span { color: var(--orbit-muted); text-decoration: line-through; }

.sources { max-width: 44rem; }
.sources summary { width: fit-content; padding-block: .375rem; font-weight: 500; }
.sources > :not(summary) { margin-top: var(--orbit-copy-gap); }
.sources ul { padding-left: 1.25rem; }
.sources li + li { margin-top: .5rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: var(--orbit-heading-gap); }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 2.75rem; padding: .625rem 1.125rem; border: 1px solid var(--orbit-text); border-radius: .625rem; background: var(--orbit-text); color: var(--orbit-page); font-weight: 500; line-height: 1.4; text-align: center; text-decoration: none; }
.button:hover { background: #333; text-decoration: none; }
.button-secondary { background: var(--orbit-page); color: var(--orbit-text); border-color: var(--orbit-line); }
.button-secondary:hover { background: var(--orbit-tint); }
.button-soft { background: var(--orbit-tint); color: var(--orbit-text); border-color: transparent; }
.button-soft:hover { background: var(--orbit-line); }
.button:disabled { cursor: default; opacity: .5; }

.field { display: grid; gap: .5rem; max-width: 36rem; }
.field + .field { margin-top: 1.25rem; }
.field > label, .choice-group legend { font-weight: 500; }
.control { display: block; width: 100%; min-width: 0; min-height: 2.75rem; padding: .625rem .875rem; border: 1px solid #8c8c8c; border-radius: .625rem; background: var(--orbit-page); color: var(--orbit-text); }
.control::placeholder { color: var(--orbit-muted); opacity: 1; }
textarea.control { resize: vertical; min-height: 7rem; }
.choice-group { min-width: 0; margin: 0; padding: 0; border: 0; }
.choice-group + .choice-group { margin-top: 1.5rem; }
.choice-group legend { padding: 0; margin-bottom: .5rem; }
.choice { display: flex; align-items: center; gap: .75rem; min-height: 2.75rem; padding: .5rem 0; cursor: pointer; }
.choice input { flex: none; width: 1.125rem; height: 1.125rem; margin: 0; accent-color: var(--orbit-text); }
.switch input { appearance: none; position: relative; width: 2.5rem; height: 1.5rem; border: 1px solid var(--orbit-muted); border-radius: 2rem; background: var(--orbit-muted); cursor: pointer; }
.switch input::before { content: ""; position: absolute; width: 1rem; height: 1rem; left: .1875rem; top: .1875rem; border-radius: 50%; background: var(--orbit-page); }
.switch input:checked { background: var(--orbit-text); border-color: var(--orbit-text); }
.switch input:checked::before { transform: translateX(1rem); }
.badge { display: inline-block; padding: .125rem .625rem; border-radius: .375rem; background: var(--orbit-tint); font-size: .875rem; font-weight: 500; }
.notice { margin-top: 1rem; padding: 1rem 1.25rem; border: 1px solid var(--orbit-line); border-radius: .75rem; }
.notice > p { margin-top: .5rem; }

@media (forced-colors: active) {
  .switch input { appearance: auto; }
  .switch input::before { display: none; }
}

@media (max-width: 680px) {
  :root { --orbit-section-gap: 2rem; --orbit-section-inset: 1.5rem; --orbit-heading-gap: 1.25rem; }
  .orbit-page { padding: 1.5rem 1.25rem 4rem; }
  .context { padding-bottom: .75rem; }
  .lead { font-size: 1.0625rem; }
  .content-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-image img { aspect-ratio: 1.65; border-radius: .75rem; }
  .recommendation { padding: 1.25rem; }
  .timeline > li { grid-template-columns: minmax(2.75rem, 1fr) minmax(0, 5fr); gap: .75rem; }
  .timeline > li > div { padding-left: 1rem; }
}

:root{--accent:#245b55;--accent-tint:#eff6f4;--wrong:#9a3c23;--wrong-tint:#fff5ee;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC",sans-serif;font-size:18px;line-height:1.7}body{min-width:320px}button,input,summary,a{touch-action:manipulation}button,.button,.control,summary{min-height:52px}button{border-radius:10px}.orbit-page{max-width:1160px;padding:2rem 3rem 5rem}.context{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:2.25rem;padding-bottom:1rem}.brand{font-weight:650;letter-spacing:.02em}.brand-mark{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;margin-right:.5rem;background:var(--orbit-tint);border-radius:7px}.private-label{font-size:.8rem;color:var(--orbit-muted)}h1{font-size:clamp(2.15rem,5vw,3rem);font-weight:600;line-height:1.25;letter-spacing:-.02em}h2{font-weight:600}h3{font-weight:600}p{overflow-wrap:anywhere}.lead{color:#525252;max-width:34rem}.eyebrow{font-size:.82rem;letter-spacing:.06em;color:var(--accent);margin-bottom:.7rem;font-weight:650}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:3rem;align-items:center}.hero .actions{margin-top:1.6rem}.button{min-height:54px;font-size:1rem;padding:.75rem 1.1rem}.button-primary{background:var(--accent);border-color:var(--accent)}.button-primary:hover{background:#194b46}.overview{padding:1.5rem;border:1px solid var(--orbit-line);border-radius:12px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1rem 0}.stat-number{display:block;font-size:1.8rem;font-weight:650;line-height:1.2;font-variant-numeric:tabular-nums}.stat-label{font-size:.78rem;color:var(--orbit-muted)}.mini{font-size:.83rem;color:var(--orbit-muted)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.25rem}.section-head h2{margin:0}.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.4rem}.chip{background:white;border:1px solid var(--orbit-line);padding:.55rem 1.15rem;font-weight:550}.chip[aria-pressed=true]{background:#191919;color:white;border-color:#191919}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.topic{border:1px solid var(--orbit-line);border-radius:12px;padding:1.3rem;display:flex;flex-direction:column;gap:.5rem}.topic-top{display:flex;justify-content:space-between;gap:.5rem}.topic h3{font-size:1.05rem}.topic .actions{margin-top:.5rem}.topic .button{width:100%}.coverage-track{height:6px;background:#eee;border-radius:3px;overflow:hidden;margin:.5rem 0}.coverage-fill{height:100%;background:#7a9b94}.plan{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border:1px solid var(--orbit-line);border-radius:12px;overflow:hidden}.plan-step{padding:1.25rem;border-left:1px solid var(--orbit-line)}.plan-step:first-child{border-left:0}.plan-step .day{font-size:.8rem;color:var(--accent);font-weight:650;margin-bottom:.65rem}.plan-step p{font-size:.87rem;margin-top:.5rem}.plan-step button{font-size:.8rem;margin-top:.75rem;padding:.45rem .7rem;width:100%}.practice-top{display:flex;align-items:center;justify-content:space-between;gap:1rem}.progress-wrap{margin:1.2rem 0 2rem}.progress-wrap progress{width:100%;height:7px;accent-color:var(--accent)}.question-box{max-width:840px;margin:auto}.question-label{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-bottom:1.25rem}.question-title{font-size:clamp(1.35rem,2.7vw,1.7rem);line-height:1.75;white-space:pre-line;font-weight:550}.passage{white-space:pre-line;margin:1.5rem 0;padding:1rem 1.25rem;background:var(--orbit-tint);border-left:3px solid #b8c9c5;font-size:1rem}.answer-form{margin:1.75rem 0}.answers{display:grid;gap:.75rem;margin:0;padding:0;border:0}.answer-option{display:flex;align-items:center;gap:1rem;width:100%;text-align:left;background:white;border:1px solid #d8d8d8;padding:1rem 1.1rem;border-radius:10px;min-height:68px;line-height:1.6}.answer-option.selected{background:var(--accent-tint);border:2px solid var(--accent);padding:calc(1rem - 1px) calc(1.1rem - 1px)}.option-letter{display:flex;align-items:center;justify-content:center;width:30px;height:30px;flex:none;background:#f1f1f1;border-radius:50%;font-size:.8rem;font-weight:650}.answer-option.selected .option-letter{background:var(--accent);color:white}.control{font-size:1.3rem;padding:.8rem 1rem;min-height:64px}.input-help{font-size:.85rem;color:#626262;margin-top:.5rem}.keypad{display:flex;gap:.5rem;flex-wrap:wrap;margin:.75rem 0}.keypad button{background:var(--orbit-tint);border:1px solid var(--orbit-line);font-size:1rem;padding:.4rem 1rem;min-width:52px}.feedback{padding:1.4rem;border:1px solid #bfd2cb;border-radius:12px;background:#f5faf8;line-height:1.8;margin:1.5rem 0}.feedback.wrong{border-color:#e7c9ba;background:var(--wrong-tint)}.feedback h3{font-size:1.15rem;margin-bottom:.5rem}.feedback .explanation{white-space:pre-line}.answer-text{font-weight:650;margin:.5rem 0}.error{color:#a3331e;margin:1rem 0;font-weight:550}.hint{padding:1rem;border:1px dashed #aaa;border-radius:10px;margin:1rem 0}.hint p{margin-top:.75rem;white-space:pre-line}.warning{padding:.8rem 1rem;border:1px solid #e5c7b1;background:#fff7ed;border-radius:10px;margin-bottom:1rem;font-size:.87rem}.results-stats{display:flex;flex-wrap:wrap;gap:2.5rem;padding:1.5rem 0;margin:1rem 0;border-block:1px solid var(--orbit-line)}.result-list{list-style:none;padding:0}.result-list li{padding:1.1rem 0;border-bottom:1px solid var(--orbit-line)}.result-list .marker{display:inline-block;font-size:.78rem;border-radius:4px;padding:.1rem .4rem;background:var(--orbit-tint);margin-right:.5rem}.result-list p{font-size:.9rem}.reviewed{color:var(--accent)}footer{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--orbit-line);font-size:.8rem;color:var(--orbit-muted)}.footer-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.link-button{background:none;border:0;text-decoration:underline;text-underline-offset:.2em;color:inherit;font-size:.85rem;padding:.6rem}.source-note{font-size:.8rem;color:var(--orbit-muted);margin-top:1rem}.scope-list{padding-left:1.25rem;font-size:.9rem}.scope-list li{margin:.7rem 0}dialog{width:min(92vw,500px);border:1px solid #ccc;border-radius:14px;padding:1.7rem;color:#191919}dialog::backdrop{background:#0005}dialog h2{font-size:1.35rem;margin-bottom:1rem}dialog p{font-size:.95rem}dialog .actions{justify-content:flex-end}.empty{padding:2rem;border:1px dashed #ccc;border-radius:12px}.drawing{width:100%;max-width:440px;margin:1.5rem auto}.drawing svg{width:100%;height:auto}button:disabled{cursor:default;opacity:.55}button:disabled:hover{background:inherit}details summary{display:flex;align-items:center;font-weight:550;list-style:none}details summary::after{content:'＋';margin-left:auto;padding-left:1rem}details[open] summary::after{content:'−'}.screen-title{outline:none}.session-hint{font-size:.83rem;color:#666}.stable-label{color:#345f50}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.self-check{display:grid;gap:.65rem}.self-check button{text-align:left}.select-count{display:flex;align-items:center;gap:.5rem}.select-count select{min-height:52px;border:1px solid #ccc;border-radius:8px;padding:.5rem;font:inherit;background:white}.flash:empty{display:none}.flash{margin-bottom:1rem;padding:1rem;background:var(--accent-tint);border-radius:10px}
@media(max-width:820px){.orbit-page{padding:1.5rem 1.4rem 4rem}.hero{grid-template-columns:1fr;gap:1.5rem}.overview{padding:1.25rem}.overview .stats{margin:.6rem 0}.plan{grid-template-columns:repeat(2,minmax(0,1fr))}.plan-step:nth-child(3){border-left:0;border-top:1px solid var(--orbit-line)}.plan-step:nth-child(4){border-top:1px solid var(--orbit-line)}.question-title{font-size:1.45rem}}
@media(max-width:560px){:root{font-size:17px}.orbit-page{padding:1rem 1rem 3rem}.context{margin-bottom:1.5rem}.private-label{font-size:.72rem}.topic-grid{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:.5rem}.hero h1{font-size:2.15rem}.actions .button{flex:1}.question-title{font-size:1.3rem}.practice-top .button{padding:.5rem .75rem}.answer-option{padding:.8rem;gap:.75rem}.answer-option.selected{padding:calc(.8rem - 1px)}.question-label{margin-bottom:1rem}.plan-step{padding:1rem}.results-stats{gap:1.5rem}.overview .stats{gap:.6rem}.stat-number{font-size:1.6rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.skill-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;border-top:1px solid var(--orbit-line);padding:.75rem 0;font-size:.9rem}.skill-row .button{flex:none;min-width:64px;padding:.5rem .65rem}.skill-row .mini{font-size:.75rem}.topic details summary{font-size:.85rem}.topic details{margin-top:.25rem}