:root {
  color-scheme: light dark;
  --canvas: #fcfcfc; --surface: #ffffff; --ink: #292929;
  --muted: #686868; --line: #d7d7d7; --accent: #ff8a16;
  --soft: #fff4df; --focus: #147eae; --control: #777777;
  --content-width: 80rem; --type-ratio: 1.25;
  --body: 1rem; --lead: 1.25rem; --section: 2.4414rem; --display: 3.8147rem;
  --font: 'PingFang SC', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
  --display-font: 'PingFang SC', 'Hiragino Sans GB', ui-rounded, 'SF Pro Rounded', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: var(--body)/1.8 var(--font); }
a { color: inherit; text-underline-offset: .25em; }
a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
img { max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2 { font-family: var(--display-font); line-height: 1.25; letter-spacing: -.03em; margin-bottom: 2rem; text-wrap: balance; }
h1 { font-size: clamp(2.4414rem, 4.4vw, var(--display)); }
h1 span { color: var(--muted); }
h2 { font-size: clamp(1.9531rem, 3vw, var(--section)); }
h3 { font-size: var(--lead); line-height: 1.5; margin-bottom: 2rem; }
p { text-wrap: pretty; }
.container { width: min(calc(100% - 3rem), var(--content-width)); margin-inline: auto; }
.site-header { background: var(--canvas); border-bottom: 1px solid var(--line); }
.navigation { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-block: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; font-size: var(--lead); font-weight: 700; line-height: 1.2; }
.brand img { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line); }
.wordmark { display: block; font-size: .875rem; font-weight: 400; color: var(--muted); margin-top: .25rem; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.nav-links a:hover { color: var(--muted); }
.hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 4rem; padding-block: 6rem; }
.eyebrow { font-size: .875rem; font-weight: 600; color: var(--muted); margin-bottom: 1.5rem; letter-spacing: .05em; }
.lead { font-size: var(--lead); line-height: 1.8; color: var(--muted); max-width: 32em; }
.actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .75rem 1.5rem; border: 1px solid var(--control); border-radius: 999px; text-decoration: none; font-weight: 600; white-space: nowrap; flex-shrink: 0; transition: transform 180ms ease-out; }
.btn.primary { background: var(--ink); color: var(--canvas); border-color: var(--ink); }
.btn.secondary { background: var(--surface); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(.98); }
.caption { color: var(--muted); font-size: .875rem; margin-top: 1.5rem; }
.memory-scene { padding: 2rem; border-radius: 2.5rem; background: var(--soft); }
.scene-heading { display: flex; flex-wrap: wrap; align-items: baseline; gap: .75rem; justify-content: space-between; margin-bottom: 2rem; }
.scene-heading .eyebrow { margin: 0; color: var(--ink); }
.sample-label { font-size: .875rem; color: var(--muted); }
.source-note { padding: 1.5rem; background: var(--surface); border: 1px solid var(--line); border-radius: 1rem; box-shadow: 0 12px 28px #29292908; }
.note-type { display: block; font-size: .875rem; color: var(--muted); margin-bottom: .75rem; }
.source-note p { font-size: var(--lead); }
.note-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; font-size: .875rem; color: var(--muted); border-top: 1px solid var(--line); margin-top: 1.5rem; padding-top: 1rem; }
.derived-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
.task-note, .pickup-note { padding: 1.5rem; border-radius: 1rem; background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; align-items: flex-start; }
.task-note strong { margin-bottom: 1rem; }
.time { font-size: var(--lead); font-variant-numeric: tabular-nums; }
.code { font-size: 2.4414rem; line-height: 1.3; font-variant-numeric: tabular-nums; letter-spacing: .02em; margin-bottom: .5rem; }
.pickup-note > span:last-child { color: var(--muted); font-size: .875rem; }
figcaption { font-size: .875rem; color: var(--muted); margin-top: 1.5rem; }
.feature-band, .legal-band { background: var(--surface); border-block: 1px solid var(--line); padding-block: 6rem; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; margin-top: 4rem; }
.features article p, .data-details p { color: var(--muted); }
.feature-label { display: inline-block; font-size: .875rem; margin-bottom: 1.5rem; background: var(--soft); padding: .25rem .75rem; border-radius: 999px; }
.data-section, .support-section { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; padding-block: 6rem; }
.data-details { display: grid; gap: 3rem; }
.section-intro { max-width: 44em; color: var(--muted); }
.legal-links { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; }
.legal-links a { border: 1px solid var(--control); border-radius: 1rem; padding: 1.5rem; text-decoration: none; display: grid; grid-template-columns: 1fr auto; gap: .5rem 1rem; transition: background 180ms ease-out; }
.legal-links a:hover { background: var(--soft); }
.legal-links a strong { font-size: var(--lead); }
.legal-links a > span:not(.review-label) { grid-column: 1; color: var(--muted); }
.review-label { font-size: .875rem; grid-column: 2; grid-row: 1; color: var(--muted); align-self: start; }
.contact { display: inline-block; font-size: var(--lead); margin-top: 1.5rem; padding-block: .5rem; overflow-wrap: anywhere; }
.support-details { align-self: start; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding-block: .5rem; }
summary { min-height: 48px; cursor: pointer; padding-block: .75rem; font-weight: 600; }
details p { color: var(--muted); padding-block: 1rem; }
.site-footer { border-top: 1px solid var(--line); padding-block: 3rem; color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; }
.footer-inner > div { display: flex; flex-direction: column; align-items: flex-start; gap: .5rem; }
.footer-inner strong { color: var(--ink); }
footer a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.footer-inner > div > span { font-size: .875rem; }
.skip-link { position: absolute; top: -6rem; left: 1rem; padding: .75rem 1rem; background: var(--surface); z-index: 2; }
.skip-link:focus { top: 1rem; }
.document-shell { max-width: 54rem; padding-block: 3rem; }
.breadcrumbs { display: flex; gap: .5rem; align-items: center; margin-bottom: 2rem; }
.breadcrumbs a { min-height: 44px; display: inline-flex; align-items: center; }
.review-banner { background: var(--soft); border-radius: 1rem; padding: 1.5rem; margin-bottom: 3rem; }
.review-banner p { margin-top: .5rem; }
.document-body { overflow-wrap: anywhere; }
.document-body h1 { font-size: clamp(1.9531rem, 4vw, 2.4414rem); }
.document-body h2 { font-size: 1.5625rem; margin-top: 3rem; line-height: 1.5; }
.document-body h3 { font-size: 1.25rem; margin-top: 2rem; }
.document-body p { margin-bottom: 1rem; }
.document-body ul { padding-left: 1.5rem; }
.document-body li { margin-bottom: .75rem; }
.table-scroll { overflow-x: auto; margin-block: 2rem; }
table { width: 100%; border-collapse: collapse; font-size: 1rem; }
th, td { text-align: left; vertical-align: top; padding: .75rem; border: 1px solid var(--line); min-width: 6rem; }
th { background: var(--soft); }
.document-nav { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 2rem; display: flex; flex-wrap: wrap; gap: 1rem; }
.document-nav a { display: inline-flex; align-items: center; min-height: 44px; }
@media (max-width: 60rem) {
  .hero, .data-section, .support-section { grid-template-columns: 1fr; }
  .hero { gap: 3rem; }
  .memory-scene { max-width: 40rem; }
  .features { grid-template-columns: 1fr; gap: 3rem; }
  .features p { max-width: 44em; }
}
@media (max-width: 36rem) {
  .container { width: calc(100% - 2rem); }
  .navigation { gap: 1rem; }
  .nav-links { gap: 1rem; }
  .hero, .data-section, .support-section, .feature-band, .legal-band { padding-block: 3rem; }
  .memory-scene { padding: 1.5rem; border-radius: 2rem; }
  .derived-notes, .legal-links { grid-template-columns: 1fr; }
  .source-note, .task-note, .pickup-note { padding: 1rem; }
  .legal-links a { grid-template-columns: 1fr; }
  .review-label { grid-row: auto; grid-column: 1; }
}
@media (prefers-color-scheme: dark) {
  :root { --canvas: #111315; --surface: #1c1f22; --ink: #f3f4f5; --muted: #bbc0c5; --line: #373b40; --soft: #352817; --focus: #80cfff; --control: #969ca2; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  :root { color-scheme: light; --canvas: white; --surface: white; --ink: #292929; --muted: #686868; --line: #d7d7d7; --soft: #fff4df; }
  .site-header, .skip-link, .document-nav { display: none; }
  .document-shell { width: 100%; max-width: none; padding: 0; }
}