:root {
  color-scheme: dark;
  --bg: #090914;
  --panel: rgba(22, 21, 42, .94);
  --panel-2: #111225;
  --line: rgba(222, 181, 92, .24);
  --gold: #e6bd67;
  --gold-bright: #ffdb86;
  --violet: #8179df;
  --text: #f2eee6;
  --muted: #aaa8bd;
  --danger: #ff8b78;
  --warning: #f3a55b;
  --radius: 16px;
}
* { box-sizing: border-box; }
html { min-width: 0; background: var(--bg); }
body { margin: 0; min-width: 0; color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif; line-height: 1.55; background: radial-gradient(circle at 75% 0, rgba(96,72,158,.25), transparent 38rem), linear-gradient(145deg,#080914 0%,#101020 52%,#090912 100%); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .2; background-image: linear-gradient(90deg,transparent 49.8%,rgba(230,189,103,.08) 50%,transparent 50.2%); background-size: 84px 84px; }
button, input, select { font: inherit; }
button, label, select { -webkit-tap-highlight-color: transparent; }
a { color: var(--gold-bright); }
[hidden] { display: none !important; }
.page-shell { width: min(1100px, calc(100% - 32px)); margin: 0 auto; padding: 34px 0 28px; position: relative; }
.hero { min-height: 150px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 22px; padding: 20px 28px; border: 1px solid var(--line); border-bottom: 0; background: linear-gradient(105deg,rgba(18,18,38,.96),rgba(37,29,61,.9)); clip-path: polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,0 100%); }
.hero-mark { position: relative; width: 78px; height: 78px; display: grid; place-items: center; border: 1px solid rgba(230,189,103,.58); color: var(--gold); font-family: serif; background: radial-gradient(circle,rgba(230,189,103,.12),transparent 70%); box-shadow: inset 0 0 0 6px rgba(230,189,103,.04); text-shadow: 0 0 18px rgba(230,189,103,.5); transform: rotate(45deg); }
.hero-mark::before { content: "刀"; position: absolute; left: calc(50% - 4px); top: 50%; font-size: 2.4rem; line-height: 1; transform: translate(-50%, -50%) rotate(-45deg); }
.eyebrow,.step-label { color: var(--gold); letter-spacing: .17em; font-weight: 800; font-size: .72rem; margin: 0 0 5px; }
h1 { margin: 0; font-family: Georgia,"Noto Serif TC",serif; font-size: clamp(1.85rem,4vw,3rem); letter-spacing: .04em; }
h1 span { color: var(--gold-bright); }
.subtitle { margin: 4px 0 0; color: var(--muted); letter-spacing: .22em; }
.source-meta { align-self: end; text-align: right; color: var(--muted); font-size: .85rem; display: grid; gap: 4px; }
.source-meta a { text-decoration: none; }
.mode-tabs { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); background: #0e0e1d; padding: 7px; gap: 7px; }
.mode-tab { min-height: 52px; border: 0; color: var(--muted); background: transparent; cursor: pointer; font-weight: 800; letter-spacing: .06em; border-radius: 8px; transition: .18s ease; }
.mode-tab:hover { color: var(--text); background: rgba(129,121,223,.12); }
.mode-tab.is-active { color: #161323; background: linear-gradient(135deg,var(--gold-bright),#c8953d); box-shadow: 0 7px 24px rgba(211,158,62,.16); }
.workspace-card { border: 1px solid var(--line); border-top: 0; background: var(--panel); box-shadow: 0 26px 70px rgba(0,0,0,.42); }
.mode-panel { padding: clamp(22px,4vw,42px); animation: panel-in .2s ease; }
@keyframes panel-in { from { opacity: .55; transform: translateY(4px); } }
.panel-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding-bottom: 22px; margin-bottom: 28px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin: 0; font-family: Georgia,"Noto Serif TC",serif; font-size: clamp(1.35rem,3vw,1.8rem); }
.panel-heading > p { max-width: 480px; color: var(--muted); margin: 0; text-align: right; }
fieldset { border: 0; padding: 0; margin: 0 0 25px; min-width: 0; }
legend,.field-label,.field > label { display: block; color: #ddd8cc; font-size: .91rem; font-weight: 750; margin-bottom: 9px; }
.segmented { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; }
.segmented label { cursor: pointer; min-width: 0; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span { min-height: 46px; display: grid; place-items: center; padding: 8px 12px; border: 1px solid #3b3854; border-radius: 9px; color: var(--muted); background: var(--panel-2); font-weight: 750; transition: .18s; }
.segmented input:focus-visible + span { outline: 2px solid var(--gold); outline-offset: 2px; }
.segmented input:checked + span { color: var(--gold-bright); border-color: var(--gold); background: linear-gradient(145deg,rgba(230,189,103,.14),rgba(129,121,223,.1)); box-shadow: inset 0 0 18px rgba(230,189,103,.06); }
.segmented.compact { max-width: 430px; }
.conditional { margin: 0 0 25px; animation: panel-in .16s ease; }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 21px 24px; }
.field.full { grid-column: 1 / -1; }
.advanced-input { margin: 22px 0 25px; }
.advanced-input .advanced-body { padding: 0 17px 17px; color: var(--text); }
.advanced-toggle { display: flex; align-items: center; gap: 10px; min-height: 44px; margin-bottom: 16px; cursor: pointer; font-weight: 750; }
.advanced-toggle input { width: 20px; height: 20px; accent-color: var(--gold); }
input[type="number"], input[type="text"], select { width: 100%; min-height: 48px; border: 1px solid #3a3850; border-radius: 9px; padding: 10px 13px; color: var(--text); background: #0d0e1c; outline: none; transition: border-color .15s, box-shadow .15s; }
input:focus, select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(230,189,103,.12); }
small { display: block; margin-top: 6px; color: var(--muted); }
.primary-action { width: 100%; min-height: 50px; margin-top: 30px; border: 1px solid #f2cf82; border-radius: 9px; cursor: pointer; color: #191421; background: linear-gradient(115deg,#f0cb79,#bc8230); font-weight: 900; letter-spacing: .07em; box-shadow: 0 10px 28px rgba(188,130,48,.18); transition: transform .15s,filter .15s; }
.primary-action:hover { filter: brightness(1.08); transform: translateY(-1px); }
.primary-action:active { transform: translateY(0); }
.warning-banner,.error-summary { padding: 12px 14px; border-radius: 8px; margin: 0 0 22px; }
.warning-banner { color: #ffd19c; border: 1px solid rgba(243,165,91,.4); background: rgba(155,75,38,.17); }
.error-summary { color: #ffd3cc; border: 1px solid rgba(255,139,120,.45); background: rgba(133,38,43,.22); }
.error-summary ul { margin: 0; padding-left: 1.2em; }
.result-card { margin-top: 22px; border: 1px solid rgba(230,189,103,.43); background: linear-gradient(145deg,rgba(30,27,48,.98),rgba(17,19,39,.98)); box-shadow: 0 18px 50px rgba(0,0,0,.36); padding: clamp(22px,4vw,36px); animation: result-in .25s ease; }
@keyframes result-in { from { opacity: 0; transform: translateY(7px); } }
.result-header { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 20px; }
.result-header h2 { margin: 0; font-family: Georgia,"Noto Serif TC",serif; }
.range-badge { border: 1px solid var(--violet); background: rgba(129,121,223,.15); color: #c6c1ff; border-radius: 999px; padding: 5px 10px; font-size: .82rem; font-weight: 800; }
.metric-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.metric { padding: 17px; min-width: 0; border: 1px solid rgba(129,121,223,.22); background: rgba(9,10,24,.54); border-radius: 10px; }
.metric.primary { border-color: rgba(230,189,103,.45); background: rgba(230,189,103,.07); }
.metric-label { color: var(--muted); font-size: .83rem; }
.metric-value { display: block; margin-top: 5px; color: var(--text); font-family: Georgia,serif; font-size: clamp(1.12rem,3vw,1.55rem); font-weight: 800; overflow-wrap: anywhere; }
.metric.primary .metric-value { color: var(--gold-bright); font-size: clamp(1.4rem,4vw,2.05rem); }
.result-note { margin: 18px 0 0; color: var(--muted); }
.result-note.warning { color: #ffd19c; }
.notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
details { border: 1px solid var(--line); background: rgba(18,18,36,.75); }
summary { cursor: pointer; min-height: 48px; padding: 13px 17px; color: var(--gold); font-weight: 800; }
details > div { padding: 0 17px 14px; color: var(--muted); }
details p { margin: 8px 0; }
footer { text-align: center; color: #777588; font-size: .82rem; padding: 26px 0 0; }
@media (max-width: 720px) {
  .page-shell { width: min(100% - 20px,1100px); padding-top: 10px; }
  .hero { grid-template-columns: auto 1fr; padding: 20px 16px; gap: 14px; }
  .hero-mark { width: 54px; height: 54px; }
  .hero-mark::before { left: calc(50% - 2px); }
  .source-meta { grid-column: 1 / -1; text-align: left; align-self: auto; }
  .panel-heading { display: block; }
  .panel-heading > p { margin-top: 8px; text-align: left; }
  .form-grid,.metric-grid,.notes-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
}
@media (max-width: 360px) {
  .page-shell { width: calc(100% - 12px); }
  .hero-mark { display: none; }
  .hero { grid-template-columns: 1fr; }
  .mode-panel { padding: 18px 13px 22px; }
  .segmented span { font-size: .88rem; padding-inline: 5px; }
}
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }