/* humarb Research 06 · primitive brand tokens → semantic themes → components */
:root {
  --p-brand: oklch(from #7657DD l c h);
  --p-brand-dark: oklch(from #967EFF l c h);
  --p-ink: oklch(from #111113 l c h);
  --p-paper: oklch(from #FAFAFC l c h);
  --accent: var(--p-brand);
  --canvas: var(--p-paper);
  --ink: var(--p-ink);
  --text: color-mix(in oklch, var(--p-ink) 92%, var(--p-paper));
  --muted: #62616b;
  --faint: #74737d;
  --line: color-mix(in oklch, var(--p-ink) 14%, var(--p-paper));
  --line-strong: color-mix(in oklch, var(--p-ink) 30%, var(--p-paper));
  --surface: color-mix(in oklch, var(--p-brand) 4%, var(--p-paper));
  --surface-strong: color-mix(in oklch, var(--p-brand) 8%, var(--p-paper));
  --header: color-mix(in oklch, var(--p-paper) 93%, transparent);
  --button-text: var(--p-paper);
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif CJK SC", "Songti SC", Georgia, serif;
  --sans: "Avenir Next", Avenir, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page-pad: clamp(20px, 4vw, 56px);
  --content-max: 1400px;
  --measure: 72ch;
  --header-height: 74px;
  color-scheme: light;
}
html[data-theme="dark"] {
  --accent: var(--p-brand-dark);
  --canvas: var(--p-ink);
  --ink: var(--p-paper);
  --text: color-mix(in oklch, var(--p-paper) 91%, var(--p-ink));
  --muted: #b8b7c1;
  --faint: #a3a2ad;
  --line: color-mix(in oklch, var(--p-paper) 16%, var(--p-ink));
  --line-strong: color-mix(in oklch, var(--p-paper) 31%, var(--p-ink));
  --surface: color-mix(in oklch, var(--p-brand-dark) 7%, var(--p-ink));
  --surface-strong: color-mix(in oklch, var(--p-brand-dark) 12%, var(--p-ink));
  --header: color-mix(in oklch, var(--p-ink) 93%, transparent);
  --button-text: var(--p-ink);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 22px); }
body { margin: 0; min-width: 0; min-height: 100dvh; overflow-x: hidden; background: var(--canvas); color: var(--text); font-family: var(--sans); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; transition: background-color 200ms ease-out, color 200ms ease-out; }
body.dialog-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { border: 0; background: none; color: inherit; cursor: pointer; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
img, svg { display: block; max-width: 100%; }
p, h1, h2, h3, figure, blockquote { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: color-mix(in oklch, var(--accent) 26%, var(--canvas)); }
.skip-link { position: fixed; z-index: 60; top: 10px; left: 10px; min-height: 44px; padding: 10px 16px; background: var(--ink); color: var(--canvas); transform: translateY(-160%); transition: transform 180ms ease-out; }
.skip-link:focus { transform: translateY(0); }
.reading-progress { position: fixed; z-index: 50; inset: 0 0 auto; height: 2px; pointer-events: none; }
.reading-progress span { display: block; width: 100%; height: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; }
.site-header { position: sticky; z-index: 30; top: 0; height: calc(var(--header-height) + env(safe-area-inset-top)); padding: env(safe-area-inset-top) var(--page-pad) 0; display: flex; align-items: center; gap: 22px; border-bottom: 1px solid var(--line); background: var(--header); backdrop-filter: blur(14px); }
.brand { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 44px; }
.logo { width: 128px; height: auto; aspect-ratio: 896 / 292; }
.logo-dark { display: none; }
html[data-theme="dark"] .logo-light { display: none; }
html[data-theme="dark"] .logo-dark { display: block; }
.series { color: var(--muted); font: 10px/1.4 var(--mono); letter-spacing: .12em; }
.header-nav { display: flex; align-items: center; gap: 20px; margin-left: 12px; }
.header-nav a, .text-button { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); font-size: .8125rem; transition: color 160ms ease-out; }
.header-nav a:hover, .text-button:hover { color: var(--accent); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.text-button { padding: 0 4px; }
.mobile-toc-button { display: none; }
.header-pdf { min-width: 52px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 12px; background: var(--ink); color: var(--canvas); font-size: .75rem; font-weight: 700; transition: background-color 160ms ease-out, color 160ms ease-out, transform 160ms ease-out; }
.header-pdf:hover { background: var(--accent); color: var(--button-text); }
.header-pdf:active, .button:active { transform: scale(.97); }
.hero { width: 100%; max-width: var(--content-max); margin: 0 auto; padding: 76px var(--page-pad) 64px; display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: clamp(40px, 7vw, 104px); border-bottom: 1px solid var(--line); }
.kicker, .section-label { margin-bottom: 22px; color: var(--accent); font: 700 .6875rem/1.5 var(--sans); letter-spacing: .12em; }
h1 { max-width: 18ch; color: var(--ink); font: 500 clamp(2.55rem, 5.2vw, 4.55rem)/1.04 var(--serif); letter-spacing: -.043em; text-wrap: balance; }
.subtitle { max-width: 43ch; margin-top: 22px; color: var(--muted); font: 400 clamp(1.2rem, 2.4vw, 1.7rem)/1.35 var(--serif); }
.author-line { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; font-size: .8125rem; }
.author-line strong { color: var(--ink); }
.author-line span { color: var(--muted); }
.author-line a { min-height: 44px; display: inline-flex; align-items: center; color: var(--accent); font-family: var(--mono); font-size: .6875rem; overflow-wrap: anywhere; }
.author-line a:hover { text-decoration: underline; text-underline-offset: 4px; }
.hero-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 48px; padding: 12px 18px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line-strong); font-size: .8125rem; font-weight: 700; transition: background-color 160ms ease-out, color 160ms ease-out, border-color 160ms ease-out, transform 160ms ease-out; }
.button.primary { border-color: var(--accent); background: var(--accent); color: var(--button-text); }
.button.primary:hover { background: color-mix(in oklch, var(--accent) 86%, var(--ink)); }
.button.secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--surface); }
.doi-status { margin-top: 28px; color: var(--faint); font: .6875rem/1.8 var(--mono); overflow-wrap: anywhere; }
.doi-status span { margin-right: 12px; color: var(--accent); }
.doi-status strong { color: var(--muted); font-weight: 500; }
.hero-aside { align-self: end; border-top: 1px solid var(--line-strong); }
.hero-aside > div { padding: 20px 0; border-bottom: 1px solid var(--line); }
.hero-aside span { color: var(--faint); font: .625rem/1.4 var(--mono); letter-spacing: .12em; }
.hero-aside strong { display: block; margin-top: 4px; color: var(--ink); font: 500 1.4rem/1.3 var(--serif); }
.hero-aside p { margin-top: 5px; color: var(--muted); font-size: .75rem; line-height: 1.55; }
.paper-layout { width: 100%; max-width: var(--content-max); margin: 0 auto; padding: 0 var(--page-pad); display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: clamp(40px, 6vw, 88px); }
.sidebar { align-self: start; position: sticky; top: var(--header-height); max-height: calc(100dvh - var(--header-height)); padding: 56px 0 32px; overflow-y: auto; }
.sidebar-title { margin-bottom: 12px; color: var(--muted); font: .625rem/1.5 var(--mono); letter-spacing: .12em; }
.toc { border-top: 1px solid var(--line-strong); }
.toc a { min-height: 44px; padding: 10px 2px; display: flex; align-items: center; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .75rem; transition: color 150ms ease-out, padding-left 150ms ease-out; }
.toc a:hover, .toc a.active { padding-left: 5px; color: var(--accent); }
.evidence-note { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); }
.evidence-note span { color: var(--faint); font: .5625rem/1.5 var(--mono); letter-spacing: .12em; }
.evidence-note p { margin-top: 8px; color: var(--muted); font-size: .6875rem; line-height: 1.7; }
article { min-width: 0; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 36px 0 28px; border-bottom: 1px solid var(--line); }
.metrics div { padding: 0 20px; border-left: 1px solid var(--line); }
.metrics div:first-child { padding-left: 0; border-left: 0; }
.metrics strong { display: block; color: var(--accent); font: 500 2.25rem/1.1 var(--serif); }
.metrics span { display: block; margin-top: 6px; color: var(--muted); font-size: .6875rem; line-height: 1.5; }
.paper-section { padding: 64px 0 68px; border-bottom: 1px solid var(--line); scroll-margin-top: calc(var(--header-height) + 20px); }
.paper-section:last-child { border-bottom: 0; }
.section-label { margin-bottom: 18px; font-size: .625rem; }
h2 { max-width: 26ch; margin-bottom: 26px; color: var(--ink); font: 500 clamp(1.9rem, 3.6vw, 2.9rem)/1.15 var(--serif); letter-spacing: -.025em; text-wrap: balance; }
h3 { color: var(--ink); font-size: .9375rem; line-height: 1.4; }
.paper-section > p:not(.section-label):not(.note):not(.disclaimer) { max-width: var(--measure); margin-top: 18px; font-family: var(--serif); font-size: 1.0625rem; line-height: 1.78; }
.chinese-abstract { max-width: var(--measure); margin-top: 30px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.chinese-abstract summary { min-height: 48px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; color: var(--muted); font-size: .875rem; font-weight: 650; list-style: none; }
.chinese-abstract summary::-webkit-details-marker { display: none; }
.chinese-abstract summary span { color: var(--accent); transition: transform 180ms ease-out; }
.chinese-abstract[open] summary span { transform: rotate(45deg); }
.chinese-abstract h3 { margin-top: 8px; font: 500 1.25rem/1.4 var(--serif); }
.chinese-abstract p { margin-top: 14px; color: var(--muted); font-family: "Noto Serif CJK SC", "Songti SC", "SimSun", serif; font-size: .9375rem; line-height: 1.9; }
.inline-link { min-height: 44px; margin: 18px 0 12px; display: inline-flex; align-items: center; color: var(--accent); border-bottom: 1px solid currentColor; font-size: .75rem; }
.finding-list { margin-top: 34px; border-top: 1px solid var(--line-strong); }
.finding-list > div { display: grid; grid-template-columns: 56px minmax(150px, 220px) minmax(0, 1fr); gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: start; }
.finding-list > div > span { color: var(--accent); font: .6875rem/1.6 var(--mono); }
.finding-list h3 { font: 500 1.15rem/1.4 var(--serif); }
.finding-list p { color: var(--muted); font-size: .8125rem; line-height: 1.75; }
.formula-block { margin: 32px 0; padding: 24px; overflow-x: auto; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); background: var(--surface); }
.formula-block > span { display: block; margin-bottom: 16px; color: var(--muted); font: .625rem/1.5 var(--mono); letter-spacing: .1em; }
.formula { color: var(--ink); font: 500 clamp(1rem, 2.5vw, 1.4rem)/1.7 var(--serif); text-align: center; overflow-wrap: anywhere; }
.formula + .formula { margin-top: 10px; }
.math { color: var(--accent); font-family: var(--serif); white-space: nowrap; }
.table-wrap { margin: 30px 0 20px; overflow-x: auto; overscroll-behavior-inline: contain; }
table { width: 100%; border-collapse: collapse; text-align: left; font-size: .75rem; }
th { padding: 11px 10px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); color: var(--ink); font-size: .6875rem; font-weight: 650; }
td { padding: 12px 10px; border-bottom: 1px solid var(--line); color: var(--muted); vertical-align: top; }
td:first-child { color: var(--ink); font-weight: 600; }
.numeric { text-align: right; font-variant-numeric: tabular-nums; }
.note { margin-top: 18px; color: var(--faint); font-size: .6875rem; line-height: 1.75; }
.figures-grid { display: grid; gap: 42px; margin-top: 44px; }
figure { min-width: 0; }
.figure-button { position: relative; display: block; width: 100%; min-height: 44px; padding: 12px; border: 1px solid var(--line); background: #FAFAFC; cursor: zoom-in; transition: border-color 160ms ease-out, transform 180ms ease-out; }
.figure-button::after { content: "ENLARGE ↗"; position: absolute; right: 10px; bottom: 10px; min-height: 32px; padding: 7px 9px; display: inline-flex; align-items: center; border: 1px solid #D8D8DE; background: color-mix(in srgb, #FAFAFC 93%, transparent); color: #111113; font: 600 .5625rem/1 var(--sans); letter-spacing: .06em; }
.figure-button:hover { border-color: #7657DD; }
.figure-button:hover img { transform: scale(1.006); }
.figure-button:active { transform: scale(.995); }
.figure-button img { width: 100%; height: auto; transition: transform 200ms ease-out; }
figcaption { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 14px; margin-top: 12px; color: var(--muted); }
figcaption span { color: var(--accent); font: .625rem/1.8 var(--mono); letter-spacing: .07em; }
figcaption p { font-size: .75rem; line-height: 1.7; }
.robustness-list > div { grid-template-columns: 72px minmax(170px, 250px) minmax(0, 1fr); }
.boundary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; border-top: 1px solid var(--line-strong); }
.boundary-grid > div { padding: 24px 0; border-bottom: 1px solid var(--line); }
.boundary-grid h3 { font: 500 1.2rem/1.4 var(--serif); }
.boundary-grid p { margin-top: 10px; color: var(--muted); font-size: .8125rem; line-height: 1.75; }
.companion-list { margin-top: 34px; border-top: 1px solid var(--line-strong); }
.companion-list a { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 6px 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.companion-list a > span { grid-row: 1 / 3; color: var(--accent); font: .625rem/1.6 var(--mono); letter-spacing: .08em; }
.companion-list strong { font: 500 1.125rem/1.4 var(--serif); }
.companion-list code { color: var(--muted); font: .6875rem/1.5 var(--mono); overflow-wrap: anywhere; }
.companion-list a:hover strong { color: var(--accent); }
.limitation-list { margin: 32px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.limitation-list li { padding: 20px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .875rem; line-height: 1.75; }
.limitation-list strong { color: var(--ink); }
blockquote { margin-top: 30px; padding: 22px 0 22px 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); border-left: 1px solid var(--accent); color: var(--muted); font: 1.125rem/1.65 var(--serif); }
.publication-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 30px 0 34px; border-top: 1px solid var(--line-strong); }
.publication-facts > div { min-width: 0; padding: 16px 12px 16px 0; border-bottom: 1px solid var(--line); }
.publication-facts > div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
.publication-facts span { display: block; color: var(--faint); font: .625rem/1.5 var(--mono); }
.publication-facts strong { display: block; margin-top: 5px; color: var(--muted); font-size: .75rem; font-weight: 550; overflow-wrap: anywhere; }
.publication-facts a { min-height: 44px; display: inline-flex; align-items: center; color: var(--accent); }
.download-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line-strong); }
.download-list a { min-width: 0; min-height: 104px; display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 3px 12px; padding: 20px 14px 20px 0; border-bottom: 1px solid var(--line); }
.download-list a:nth-child(odd) { border-right: 1px solid var(--line); }
.download-list a:nth-child(even) { padding-left: 18px; }
.download-list a > span { grid-row: 1 / 3; color: var(--accent); font: .625rem/1.7 var(--mono); }
.download-list strong { font: 500 1.125rem/1.35 var(--serif); }
.download-list small { color: var(--muted); font-size: .6875rem; line-height: 1.5; overflow-wrap: anywhere; }
.download-list a:hover strong { color: var(--accent); }
.citation-box { margin-top: 34px; border: 1px solid var(--line); background: var(--surface); }
.citation-heading { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 14px; border-bottom: 1px solid var(--line); }
.citation-heading span { color: var(--muted); font: .5625rem/1.5 var(--mono); letter-spacing: .08em; }
.citation-heading button { min-width: 88px; min-height: 44px; color: var(--accent); font-size: .75rem; font-weight: 650; }
.citation-heading button:hover { text-decoration: underline; text-underline-offset: 4px; }
pre { margin: 0; padding: 20px; overflow-x: auto; color: var(--muted); font: .75rem/1.8 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; }
.copy-status { min-height: 28px; padding: 0 16px 10px; color: var(--accent); font-size: .6875rem; }
.disclaimer { margin-top: 30px; color: var(--faint); font-size: .75rem; line-height: 1.75; }
.disclaimer strong { color: var(--muted); }
footer { width: 100%; max-width: var(--content-max); margin: 0 auto; padding: 34px var(--page-pad) 42px; display: grid; grid-template-columns: 1fr 2fr auto; gap: 36px; border-top: 1px solid var(--line); color: var(--faint); font-size: .6875rem; }
footer strong { color: var(--ink); font-size: .75rem; }
footer p { margin-top: 4px; }
footer a { min-height: 44px; display: inline-flex; align-items: center; color: var(--muted); }
footer a:hover { color: var(--accent); }
dialog { margin: auto; padding: 0; border: 1px solid var(--line); background: var(--canvas); color: var(--text); max-width: calc(100vw - 32px); max-height: calc(100dvh - 32px); }
dialog::backdrop { background: rgba(10, 10, 14, .82); backdrop-filter: blur(4px); }
.dialog-toolbar { min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 8px 16px; border-bottom: 1px solid var(--line); }
.dialog-toolbar span { color: var(--muted); font: .625rem/1.5 var(--mono); letter-spacing: .08em; }
.dialog-toolbar button { min-width: 72px; min-height: 44px; color: var(--muted); font-size: .75rem; }
.dialog-toolbar button:hover { color: var(--accent); }
.figure-dialog { width: calc(100vw - 32px); max-width: 1200px; }
.figure-dialog > img { width: 100%; max-height: calc(100dvh - 160px); object-fit: contain; background: #FAFAFC; }
.figure-dialog > p { padding: 12px 16px; color: var(--muted); font-size: .6875rem; }
.toc-dialog { width: calc(100vw - 32px); max-width: 420px; }
.toc-dialog nav { padding: 8px 20px 20px; }
.toc-dialog a { min-height: 44px; display: flex; align-items: center; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .8125rem; }
.toc-dialog a:hover { color: var(--accent); }
@media (max-width: 1100px) {
  .paper-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 40px; }
  .finding-list > div, .robustness-list > div { grid-template-columns: 48px minmax(140px, 180px) minmax(0, 1fr); gap: 14px; }
  .hero { gap: 44px; }
}
@media (max-width: 900px) {
  .site-header { gap: 14px; }
  .series, .header-nav, .sidebar { display: none; }
  .mobile-toc-button { display: inline-flex; }
  .hero { grid-template-columns: 1fr; padding-top: 58px; }
  .hero-aside { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
  .hero-aside > div { border-bottom: 0; }
  .paper-layout { display: block; }
  .paper-section > p:not(.section-label):not(.note):not(.disclaimer) { max-width: none; }
  .finding-list > div, .robustness-list > div { grid-template-columns: 48px minmax(0, 1fr); }
  .finding-list p { grid-column: 2; }
  footer { grid-template-columns: 1fr auto; }
  footer > p { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 640px) {
  :root { --header-height: 68px; }
  .site-header { padding-left: 20px; padding-right: 20px; gap: 10px; }
  .logo { width: 112px; }
  .header-actions { gap: 8px; }
  .header-pdf { min-width: 46px; padding: 0 9px; }
  .hero { padding: 44px 20px 40px; }
  h1 { font-size: clamp(2.45rem, 12vw, 3.45rem); }
  .subtitle { font-size: 1.3rem; }
  .author-line { display: block; }
  .author-line span { display: block; margin-top: 6px; }
  .author-line a { margin-right: 12px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero-aside { grid-template-columns: 1fr; gap: 0; }
  .hero-aside > div { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .paper-layout { padding: 0 20px; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 24px; padding-top: 28px; }
  .metrics div { padding: 0 14px; }
  .metrics div:nth-child(3) { padding-left: 0; border-left: 0; }
  .metrics strong { font-size: 2rem; }
  .paper-section { padding: 46px 0; }
  h2 { font-size: 2rem; }
  .paper-section > p:not(.section-label):not(.note):not(.disclaimer) { font-size: 1rem; }
  .finding-list > div, .robustness-list > div { gap: 8px 12px; }
  .formula-block { padding: 18px 12px; }
  th, td { padding: 9px 6px; font-size: .625rem; }
  th { font-size: .6rem; }
  .figures-grid { gap: 34px; }
  .figure-button { padding: 6px; }
  .figure-button::after { min-height: 28px; padding: 6px 7px; }
  figcaption { display: block; }
  figcaption span { display: block; margin-bottom: 4px; }
  .boundary-grid { grid-template-columns: 1fr; }
  .companion-list a { grid-template-columns: 1fr; }
  .companion-list a > span { grid-row: auto; }
  .publication-facts { grid-template-columns: 1fr; }
  .publication-facts > div:nth-child(even) { padding-left: 0; border-left: 0; }
  .download-list { grid-template-columns: 1fr; }
  .download-list a:nth-child(odd) { border-right: 0; }
  .download-list a:nth-child(even) { padding-left: 0; }
  .citation-heading { align-items: flex-start; }
  .citation-heading span { max-width: 150px; }
  footer { gap: 18px; padding: 28px 20px 36px; }
  dialog { max-width: calc(100vw - 20px); max-height: calc(100dvh - 20px); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}