:root {
  --canvas: #f5f1ec;
  --paper: #fff;
  --ink: #161615;
  --body: #4f4d49;
  --muted: #77736d;
  --line: #d5cfc7;
  --line-soft: #e7e1da;
  --accent: #245f50;
  --accent-soft: #dce8e3;
  --warning: #f4dfb7;
  --warning-ink: #5a3f0d;
  --danger: #9e2f25;
  --danger-soft: #f6dfdc;
  --positive: #245f50;
  --positive-soft: #dce8e3;
  --sans: Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h4, p, blockquote { margin: 0; }
h1, h2, h4 { font-weight: 500; letter-spacing: -.035em; }
h1 { font-size: clamp(42px, 6vw, 72px); line-height: 1.06; }
h2 { font-size: clamp(34px, 4.4vw, 54px); line-height: 1.12; }
h4 { font-size: 21px; line-height: 1.25; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { color: inherit; }
svg { display: block; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.wrap { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
.narrow { width: min(760px, 100%); margin-inline: auto; }
.screen-reader { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.hidden { display: none !important; }

.demo-note { background: var(--ink); color: #e9e6e1; padding: 8px 24px; text-align: center; font-size: 13px; }
.demo-note strong { color: #fff; font-weight: 500; }
.site-nav { position: sticky; top: 0; z-index: 50; background: rgba(245, 241, 236, .94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav-inner { min-height: 64px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 600; letter-spacing: -.035em; }
.brand-mark { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 6px; font-size: 13px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 26px; margin-left: auto; font-size: 14px; }
.nav-links a, .back-link { color: var(--body); }
.nav-actions { display: flex; gap: 8px; margin-left: 8px; }
.back-link { margin-left: auto; font-size: 14px; }

.btn { min-height: 44px; border: 1px solid var(--ink); border-radius: 8px; padding: 10px 17px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--ink); color: #fff; font-size: 15px; font-weight: 500; cursor: pointer; transition: transform 140ms var(--ease), background-color 160ms ease, color 160ms ease; }
.btn:active { transform: scale(.97); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-soft, .btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-danger { background: transparent; color: var(--danger); border-color: #d4a39e; }
.btn-large { min-height: 48px; padding: 12px 20px; font-size: 16px; }
.btn-wide { width: 100%; }
.btn:focus-visible, .nav-links a:focus-visible, .tab-button:focus-visible, .seg button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, .fork button:focus-visible { outline: 3px solid rgba(36, 95, 80, .25); outline-offset: 3px; }

.eyebrow { color: var(--muted); font-size: 14px; font-weight: 500; letter-spacing: 0; }
.lead { color: var(--body); font-size: clamp(19px, 2vw, 22px); line-height: 1.5; }
.fine { color: var(--muted); font-size: 13px; line-height: 1.55; }
.section { padding: 96px 0; border-top: 1px solid var(--line); }
.section-sage, .section-dark { background: transparent; color: inherit; }
.section-head { display: grid; grid-template-columns: 180px minmax(0, 760px); column-gap: 32px; margin-bottom: 48px; }
.section-head h2 { grid-column: 2; }
.section-head > p:last-child { grid-column: 2; max-width: 680px; margin-top: 18px; color: var(--body); font-size: 18px; }

/* Editorial marketing page */
.editorial-hero { padding: 88px 0 0; }
.hero-title-grid { display: grid; grid-template-columns: 180px repeat(10, 1fr); column-gap: 20px; }
.hero-title-grid .eyebrow { grid-column: 1 / 3; padding-top: 12px; }
.hero-title-grid h1 { grid-column: 3 / 11; max-width: 900px; }
.hero-title-grid .lead { grid-column: 3 / 9; margin-top: 28px; }
.hero-actions { grid-column: 3 / 10; display: flex; align-items: center; gap: 16px; margin-top: 28px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; border-bottom: 1px solid currentColor; padding-bottom: 2px; font-size: 15px; font-weight: 500; }
.hero-facts { grid-column: 3 / 11; display: flex; gap: 28px; margin-top: 44px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.product-stage { margin-top: 72px; padding: 0 0 96px; }
.product-caption { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
.product-window { overflow: hidden; border: 1px solid #c8c3bb; border-radius: 16px; background: var(--paper); }
.window-bar { height: 42px; display: flex; align-items: center; gap: 7px; padding: 0 16px; border-bottom: 1px solid var(--line-soft); background: #faf9f7; }
.window-bar i { width: 8px; height: 8px; border-radius: 50%; background: #c7c2bb; }
.window-name { margin-left: 8px; color: var(--muted); font-size: 12px; }
.product-ui { display: grid; grid-template-columns: 190px 1fr; min-height: 530px; }
.product-side { padding: 24px 18px; border-right: 1px solid var(--line-soft); background: #f8f6f3; }
.product-side .brand { margin-bottom: 34px; }
.product-menu { display: grid; gap: 5px; }
.product-menu span { padding: 9px 10px; border-radius: 6px; color: var(--muted); font-size: 13px; }
.product-menu span.on { background: var(--paper); color: var(--ink); border: 1px solid var(--line-soft); }
.product-main { padding: clamp(26px, 4vw, 48px); }
.product-kicker { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 13px; }
.product-main h4 { margin-top: 10px; font-size: clamp(28px, 3vw, 40px); }
.metric-row { display: grid; grid-template-columns: 1.2fr 1fr 1fr; margin-top: 44px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric { padding: 20px 20px 20px 0; }
.metric + .metric { padding-left: 20px; border-left: 1px solid var(--line); }
.metric span { display: block; color: var(--muted); font-size: 12px; }
.metric strong { display: block; margin-top: 8px; font: 500 clamp(22px, 2.4vw, 31px)/1.2 var(--sans); letter-spacing: -.035em; }
.activity-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 38px; margin-top: 40px; }
.mini-chart { height: 190px; display: flex; align-items: end; gap: 7px; padding-top: 26px; border-bottom: 1px solid var(--line); }
.mini-chart i { flex: 1; min-width: 4px; background: var(--accent); opacity: .84; }
.activity-list { border-top: 1px solid var(--line); }
.activity-list div { display: grid; grid-template-columns: 50px 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line-soft); font-size: 13px; }
.activity-list time { color: var(--muted); font-family: var(--mono); }
.stage-notes { display: grid; grid-template-columns: 190px 1fr 1fr; gap: 20px; margin-top: 16px; font-size: 13px; color: var(--body); }
.stage-notes p { padding-left: 14px; border-left: 1px solid var(--ink); }
.stage-notes p:first-child { grid-column: 2; }

.editorial-block { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; }
.chapter { color: var(--muted); font-size: 13px; font-family: var(--mono); }
.plain-intro blockquote { max-width: 900px; font-size: clamp(34px, 4.5vw, 56px); line-height: 1.13; letter-spacing: -.04em; }
.plain-list { margin-top: 56px; border-top: 1px solid var(--line); }
.plain-point { display: grid; grid-template-columns: minmax(180px, .8fr) 1.4fr; gap: 30px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.plain-point b { font-weight: 500; }
.plain-point p { color: var(--body); }

.flow-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.flow-head h2 { max-width: 680px; }
.money-flow { margin-top: 52px; border-top: 1px solid var(--ink); }
.flow-step { display: grid; grid-template-columns: 70px minmax(180px, .8fr) 1.4fr; gap: 28px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.flow-step span { color: var(--muted); font-family: var(--mono); font-size: 13px; }
.flow-step b { font-size: 20px; font-weight: 500; }
.flow-step p { color: var(--body); }
.flow.is-playing .flow-step { will-change: transform, opacity; }

.calculator { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; }
.calc-workbench { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.calc-head { padding: 28px 32px; border-bottom: 1px solid var(--line); }
.calc-head p { margin-top: 10px; color: var(--body); }
.calc-grid { display: grid; grid-template-columns: .9fr 1.1fr; }
.calc-form, .calc-result { padding: 32px; }
.calc-result { border-left: 1px solid var(--line); }
.calc-form label { display: block; margin-bottom: 10px; font-weight: 500; }
.amount-field { display: flex; align-items: center; border-bottom: 1px solid var(--ink); }
.amount-field span { color: var(--muted); }
.amount-field input { width: 100%; border: 0; outline: 0; padding: 12px 0 12px 10px; background: transparent; color: var(--ink); font: 500 clamp(26px, 3vw, 38px)/1.2 var(--mono); }
.calc-assumption { margin-top: 24px; }
.calc-assumption summary { cursor: pointer; font-size: 14px; }
.seg { display: inline-flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 8px; background: var(--canvas); }
.seg button { min-height: 36px; border: 0; border-radius: 5px; padding: 7px 11px; background: transparent; color: var(--muted); cursor: pointer; font-size: 13px; }
.seg button.on { background: var(--paper); color: var(--ink); box-shadow: 0 0 0 1px var(--line); }
.calc-assumption .seg { margin-top: 13px; }
.calc-result-label { color: var(--muted); font-size: 13px; }
.calc-big { padding: 12px 0 26px; border-bottom: 1px solid var(--line); }
.calc-big span { font: 500 clamp(35px, 4vw, 52px)/1.12 var(--sans); letter-spacing: -.04em; }
.calc-big small { color: var(--muted); }
.calc-line { display: flex; justify-content: space-between; gap: 20px; padding-top: 14px; color: var(--body); font-size: 14px; }
.calc-line b { color: var(--ink); font-weight: 500; font-family: var(--mono); }

.truth-list, .start-list { border-top: 1px solid var(--ink); }
.truth-row { display: grid; grid-template-columns: 70px .8fr 1.3fr; gap: 28px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.truth-number { color: var(--muted); font-family: var(--mono); font-size: 13px; }
.truth-row p { color: var(--body); }
.risk-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--ink); }
.risk-main { padding: 30px 40px 30px 0; border-right: 1px solid var(--line); }
.risk-main p { margin-top: 14px; font-size: 20px; line-height: 1.55; }
.risk-points { padding-left: 40px; }
.risk-point { padding: 20px 0; border-bottom: 1px solid var(--line); }
.risk-point b { font-weight: 500; }
.risk-point p { margin-top: 5px; color: var(--body); }
.start-row { counter-increment: start; display: grid; grid-template-columns: 70px 1fr auto; gap: 26px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.start-list { counter-reset: start; }
.start-row::before { content: "0" counter(start); color: var(--muted); font-family: var(--mono); font-size: 13px; }
.start-row p { margin-top: 5px; color: var(--body); }
.start-time { color: var(--muted); font-size: 13px; white-space: nowrap; }
.plan-feature { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: end; padding: 30px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.plan-feature p { margin-top: 8px; color: var(--body); }
.plan-price { text-align: right; }
.plan-price strong { display: block; font-size: 34px; font-weight: 500; letter-spacing: -.04em; }
.plan-price span { color: var(--muted); font-size: 13px; }
.other-plans { border-bottom: 1px solid var(--line); }
.other-plans summary { padding: 18px 0; cursor: pointer; font-weight: 500; }
.other-plan-row { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 0 0 24px; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { list-style: none; display: grid; grid-template-columns: 1fr 26px; gap: 16px; padding: 19px 0; cursor: pointer; font-weight: 500; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-family: var(--mono); text-align: right; }
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { max-width: 720px; padding: 0 40px 20px 0; color: var(--body); }
.final-cta { border-top: 1px solid var(--ink); padding: 72px 0; }
.final-cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 30px; }
.final-cta h2 { max-width: 780px; }

footer { padding: 54px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-top { display: flex; justify-content: space-between; gap: 28px; }
.footer-links, .source-links { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.disclaimer { max-width: 900px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); line-height: 1.7; }
.source-links { margin-top: 14px; text-decoration: underline; text-underline-offset: 3px; }

/* Product app */
.app-tabs { background: var(--canvas); border-bottom: 1px solid var(--line); }
.tabs-inner { display: flex; gap: 24px; overflow-x: auto; }
.tab-button { min-height: 48px; flex: 0 0 auto; border: 0; border-bottom: 2px solid transparent; padding: 10px 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 14px; }
.tab-button.on { color: var(--ink); border-bottom-color: var(--ink); }
.app-main { min-height: 75vh; padding: 56px 0 90px; }
.app-view { display: none; }
.app-view.on { display: block; }
.app-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 34px; }
.app-head h1 { font-size: clamp(38px, 5vw, 58px); }
.app-head p { margin-top: 8px; color: var(--body); }
.summary-hero { display: grid; grid-template-columns: 1.15fr .85fr; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.income-story, .balance-card { padding: clamp(28px, 4vw, 44px); }
.income-story { border-right: 1px solid var(--line); }
.income-story h2 { margin: 18px 0 42px; font-size: clamp(42px, 5vw, 64px); }
.income-story h2 small { display: block; margin-top: 7px; color: var(--muted); font-size: 16px; letter-spacing: 0; }
.income-note { color: var(--muted); font-size: 13px; }
.balance-card h4 { color: var(--muted); font-size: 14px; letter-spacing: 0; }
.balance-total { margin-top: 10px; font: 500 clamp(29px, 4vw, 43px)/1.2 var(--sans); letter-spacing: -.04em; }
.balance-bar { height: 8px; overflow: hidden; background: var(--line-soft); margin: 32px 0 18px; }
.balance-bar i { display: block; width: 93.7%; height: 100%; background: var(--accent); }
.balance-key { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.balance-key span { color: var(--muted); font-size: 12px; }
.balance-key b { display: block; font: 400 15px/1.5 var(--mono); }
.today, .advanced, .surface, .guide-form, .guide-sidebar, .help-card { margin-top: 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 28px; }
.today-head { display: flex; justify-content: space-between; gap: 18px; align-items: center; margin-bottom: 22px; }
.status-pill { display: inline-flex; align-items: center; gap: 7px; color: var(--positive); font-size: 12px; font-weight: 500; }
.status-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.timeline-item { padding: 20px 20px 0 0; }
.timeline-item + .timeline-item { padding-left: 20px; border-left: 1px solid var(--line); }
.timeline-item time { color: var(--muted); font: 12px var(--mono); }
.timeline-item b { display: block; margin-top: 7px; font-weight: 500; }
.timeline-item p { margin-top: 3px; color: var(--body); font-size: 14px; }
.advanced { overflow: hidden; padding: 0; }
.advanced > summary { list-style: none; display: flex; justify-content: space-between; padding: 20px 26px; cursor: pointer; font-weight: 500; }
.advanced > summary::-webkit-details-marker { display: none; }
.advanced > summary::after { content: "看明細 ＋"; color: var(--muted); font-size: 13px; }
.advanced[open] > summary::after { content: "收起 −"; }
.advanced-body { padding: 0 26px 26px; }
.chart-svg { width: 100%; height: 190px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--muted); font-size: 12px; font-weight: 500; padding: 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 14px 12px; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
.guide-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 18px; align-items: start; }
.guide-sidebar { position: sticky; top: 92px; margin-top: 0; background: var(--ink); color: #fff; }
.guide-sidebar h4 { margin-top: 10px; font-size: 28px; }
.guide-sidebar p { margin-top: 12px; color: #c4c2be; }
.permission-plain { display: grid; gap: 12px; margin-top: 26px; }
.permission-plain div, .permission-demo div { display: grid; grid-template-columns: 30px 1fr; gap: 10px; font-size: 14px; }
.permission-plain i, .permission-demo i { width: 27px; height: 27px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-style: normal; }
.guide-form { margin-top: 0; }
.setup-steps { counter-reset: setup; margin: 22px 0; border-top: 1px solid var(--line); }
.setup-step { counter-increment: setup; border-bottom: 1px solid var(--line); }
.setup-step summary { list-style: none; display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; padding: 16px 0; cursor: pointer; font-weight: 500; }
.setup-step summary::before { content: "0" counter(setup); color: var(--muted); font: 12px var(--mono); }
.setup-step summary::after { content: "+"; }
.setup-step[open] summary::after { content: "−"; }
.setup-step p { padding: 0 0 18px 38px; color: var(--body); }
.field { margin-top: 20px; }
.field label { display: block; margin-bottom: 7px; font-weight: 500; }
.text-input, .select { width: 100%; min-height: 48px; border: 1px solid var(--line); border-radius: 8px; padding: 11px 13px; background: var(--paper); color: var(--ink); }
.text-input { font-family: var(--mono); }
.field small { display: block; margin-top: 6px; color: var(--muted); }
.warning-box, .pitfall { margin: 20px 0; border-left: 3px solid #b18438; padding: 15px 18px; background: var(--warning); color: var(--warning-ink); font-size: 14px; }
.optional-settings { margin: 20px 0; }
.account-grid, .help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.surface, .help-card { margin-top: 0; }
.account-row { display: flex; justify-content: space-between; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--line-soft); flex-wrap: wrap; }
.account-row span:first-child { color: var(--muted); font-size: 14px; }
.account-row b { font-size: 14px; font-weight: 500; }
.toast { position: fixed; left: 50%; bottom: 26px; z-index: 100; max-width: calc(100vw - 36px); transform: translateX(-50%) translateY(120%); opacity: 0; background: var(--ink); color: #fff; border-radius: 8px; padding: 13px 18px; font-size: 14px; pointer-events: none; transition: transform 220ms var(--ease), opacity 180ms ease; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* Onboarding and document pages */
.onboarding-intro, .doc-hero { padding: 84px 0 72px; border-bottom: 1px solid var(--line); }
.onboarding-intro .narrow { text-align: left; }
.onboarding-intro h1, .doc-hero h1 { max-width: 900px; font-size: clamp(40px, 5.5vw, 66px); }
.onboarding-intro p, .doc-hero p { max-width: 700px; margin-top: 18px; color: var(--body); font-size: 18px; }
.fork { display: grid; grid-template-columns: 1fr 1fr; margin-top: 42px; border-top: 1px solid var(--ink); }
.fork button { border: 0; border-bottom: 1px solid var(--line); padding: 24px 24px 24px 0; background: transparent; text-align: left; cursor: pointer; }
.fork button + button { padding-left: 24px; border-left: 1px solid var(--line); }
.fork h4 { font-size: 22px; }
.fork p { margin-top: 7px; font-size: 15px; }
.fork .go { display: block; margin-top: 16px; color: var(--accent); font-weight: 500; }
.progress { position: sticky; top: 64px; z-index: 40; background: var(--canvas); border-bottom: 1px solid var(--line); }
.progress-row { display: grid; grid-template-columns: repeat(4, 1fr); }
.progress-item { border: 0; border-bottom: 2px solid transparent; padding: 14px 8px; background: transparent; color: var(--muted); cursor: pointer; font-size: 13px; }
.progress-item.active { color: var(--ink); border-bottom-color: var(--ink); }
.lesson { display: none; padding: 72px 0 30px; }
.lesson.on { display: block; }
.lesson-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .72fr); gap: clamp(42px, 8vw, 100px); }
.lesson-tag { color: var(--muted); font: 13px var(--mono); }
.lesson h2 { margin-top: 15px; }
.lesson .desc { margin-top: 17px; color: var(--body); font-size: 18px; }
.lesson-actions { margin-top: 24px; }
.lesson-checks { margin: 28px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.lesson-checks li { padding: 13px 0 13px 30px; border-bottom: 1px solid var(--line-soft); position: relative; }
.lesson-checks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); }
.lesson-visual { border: 1px solid var(--line); border-radius: 12px; padding: 24px; background: var(--paper); }
.lesson-visual h4 { font-size: 18px; }
.visual-window { margin-top: 22px; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.visual-window-top { height: 30px; display: flex; gap: 5px; align-items: center; padding: 0 12px; background: var(--canvas); border-bottom: 1px solid var(--line-soft); }
.visual-window-top i { width: 7px; height: 7px; border-radius: 50%; background: #b9b4ad; }
.visual-window-body { padding: 18px; }
.mock-label { display: block; margin-top: 10px; color: var(--muted); font-size: 10px; }
.mock-field { margin-top: 6px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); font-size: 12px; }
.mock-action { margin-top: 16px; padding: 9px; border-radius: 6px; background: var(--ink); color: #fff; text-align: center; font-size: 13px; }
.route-choice, .permission-demo { display: grid; gap: 10px; margin-top: 22px; }
.route-choice article { padding: 17px 0; border-top: 1px solid var(--line); }
.route-choice article.recommended { border-top-color: var(--ink); }
.route-choice p { margin-top: 5px; color: var(--body); font-size: 13px; }
.permission-demo div { padding: 11px 0; border-bottom: 1px solid var(--line-soft); }
.permission-demo small { display: block; color: var(--muted); }
.step-nav { display: flex; justify-content: space-between; gap: 12px; padding: 18px 0 72px; }
.brand-table { margin-top: 34px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.score { color: var(--accent); letter-spacing: 2px; }
.rank-list { border-top: 1px solid var(--ink); }
.rank-row { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.rank-number { font-family: var(--mono); color: var(--muted); }
.rank-row p { margin-top: 5px; color: var(--body); }

@media (hover: hover) and (pointer: fine) {
  .btn:hover { background: #30302e; }
  .btn-soft:hover, .btn-outline:hover { background: var(--paper); }
  .nav-links a:hover, .back-link:hover, .text-link:hover { color: var(--accent); }
  .tab-button:hover { color: var(--ink); }
  .fork button:hover .go { text-decoration: underline; text-underline-offset: 3px; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-title-grid { grid-template-columns: 70px repeat(5, 1fr); }
  .hero-title-grid .eyebrow { grid-column: 1 / -1; margin-bottom: 20px; }
  .hero-title-grid h1, .hero-title-grid .lead, .hero-actions, .hero-facts { grid-column: 2 / -1; }
  .product-ui { grid-template-columns: 1fr; }
  .product-side { display: none; }
  .stage-notes { grid-template-columns: 70px 1fr 1fr; }
  .stage-notes p:first-child { grid-column: 2; }
  .section-head, .editorial-block, .calculator { grid-template-columns: 70px 1fr; }
  .section-head h2, .section-head > p:last-child { grid-column: 2; }
  .summary-hero, .guide-layout, .lesson-grid { grid-template-columns: 1fr; }
  .income-story { border-right: 0; border-bottom: 1px solid var(--line); }
  .guide-sidebar { position: static; }
  .timeline { grid-template-columns: 1fr; }
  .timeline-item + .timeline-item { padding-left: 0; border-left: 0; border-top: 1px solid var(--line-soft); }
  .risk-layout, .account-grid, .help-grid { grid-template-columns: 1fr; }
  .risk-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .risk-points { padding-left: 0; }
}

@media (max-width: 640px) {
  .wrap { width: min(100% - 28px, 1240px); }
  .nav-inner { min-height: 60px; }
  .nav-actions .btn-soft { display: none; }
  .back-link { font-size: 0; }
  .back-link::after { content: "回首頁"; font-size: 13px; }
  .editorial-hero { padding-top: 58px; }
  .hero-title-grid { display: block; }
  .hero-title-grid h1 { margin-top: 18px; }
  .hero-title-grid .lead { margin-top: 22px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-facts { display: grid; gap: 8px; margin-top: 34px; }
  .product-stage { margin-top: 48px; padding-bottom: 70px; }
  .product-main { padding: 22px; }
  .metric-row { grid-template-columns: 1fr 1fr; }
  .metric:first-child { grid-column: 1 / -1; border-bottom: 1px solid var(--line); }
  .metric:nth-child(2) { border-left: 0; padding-left: 0; }
  .activity-grid { grid-template-columns: 1fr; gap: 28px; }
  .stage-notes { display: grid; grid-template-columns: 1fr; }
  .stage-notes p:first-child { grid-column: 1; }
  .section { padding: 70px 0; }
  .section-head, .editorial-block, .calculator { display: block; }
  .section-head .eyebrow, .chapter { display: block; margin-bottom: 18px; }
  .plain-list { margin-top: 38px; }
  .plain-point, .flow-step, .truth-row { grid-template-columns: 38px 1fr; gap: 14px; }
  .plain-point p, .flow-step p, .truth-row p { grid-column: 2; }
  .flow-head { align-items: flex-start; flex-direction: column; }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-form, .calc-result { padding: 24px 20px; }
  .calc-result { border-left: 0; border-top: 1px solid var(--line); }
  .risk-main { padding-right: 0; }
  .start-row { grid-template-columns: 38px 1fr; gap: 14px; }
  .start-time { grid-column: 2; }
  .plan-feature, .final-cta-inner { grid-template-columns: 1fr; }
  .plan-price { text-align: left; }
  .other-plan-row, .fork { grid-template-columns: 1fr; }
  .fork button + button { padding-left: 0; border-left: 0; }
  .footer-top { align-items: flex-start; flex-direction: column; }
  .app-head { align-items: flex-start; flex-direction: column; }
  .balance-key { grid-template-columns: 1fr; }
  .progress-item { font-size: 0; }
  .progress-item::before { content: attr(data-step); font: 12px var(--mono); }
  .step-nav { flex-direction: column-reverse; }
  .step-nav .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}