:root {
  color-scheme: light;
  --background-light: #FCFCFB;
  --surface-light: #FFFFFF;
  --foreground-light: #101718;
  --muted-light: #646A6E;
  --border-light: #E9E9E6;
  --accent-light: #B52B2B;
  --background-dark: #171918;
  --surface-dark: #202321;
  --foreground-dark: #F4F4F1;
  --muted-dark: #ABB2AD;
  --border-dark: #363D38;
  --accent-dark: #FF8681;
  --brand: #E83836;
  --background: var(--background-light);
  --surface: var(--surface-light);
  --foreground: var(--foreground-light);
  --muted: var(--muted-light);
  --border: var(--border-light);
  --accent: var(--accent-light);
  --subtle: color-mix(in srgb, var(--foreground) 3%, var(--background));
  --tint: color-mix(in srgb, var(--brand) 5%, var(--surface));
  --selection: color-mix(in srgb, var(--brand) 18%, var(--background));
  --scrollbar: color-mix(in srgb, var(--foreground) 35%, var(--background));
  --scrollbar-hover: color-mix(in srgb, var(--foreground) 55%, var(--background));
  --paper-shadow: 0 16px 48px rgb(16 23 24 / 7%);
  --font-body: 'Geist', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-brand: 'Outfit', 'Geist', sans-serif;
  --text-hero: 64px;
  --text-heading: 40px;
  --text-body: 18px;
  --body-leading: 1.75;
  --header-height: 72px;
  --page-gutter: 48px;
  --section-space: 96px;
  --radius-control: 8px;
  --radius-panel: 12px;
  --ease-out: cubic-bezier(.2, .65, .3, 1);
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --background: var(--background-dark);
  --surface: var(--surface-dark);
  --foreground: var(--foreground-dark);
  --muted: var(--muted-dark);
  --border: var(--border-dark);
  --accent: var(--accent-dark);
  --paper-shadow: 0 16px 48px rgb(0 0 0 / 22%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --background: var(--background-dark);
    --surface: var(--surface-dark);
    --foreground: var(--foreground-dark);
    --muted: var(--muted-dark);
    --border: var(--border-dark);
    --accent: var(--accent-dark);
    --paper-shadow: 0 16px 48px rgb(0 0 0 / 22%);
  }
}

html:lang(en) { --body-leading: 1.6; }

@media (max-width: 1023px) {
  :root {
    --text-hero: 52px;
    --text-heading: 36px;
    --text-body: 17px;
    --header-height: 64px;
    --page-gutter: 32px;
    --section-space: 80px;
  }
}

@media (max-width: 767px) {
  :root {
    --text-hero: 40px;
    --text-heading: 28px;
    --text-body: 16px;
    --page-gutter: 20px;
    --section-space: 64px;
  }
}

@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('./fonts/geist-latin.woff2') format('woff2');
}

@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('./fonts/outfit-600-latin.woff2') format('woff2');
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
:target { scroll-margin-top: calc(var(--header-height) + 24px); }
body { margin: 0; color: var(--foreground); background: var(--background); font: 400 var(--text-body)/var(--body-leading) var(--font-body); -webkit-font-smoothing: antialiased; }
body, select, button { font-family: var(--font-body); }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 600; text-wrap: balance; }
h1 { font-size: var(--text-hero); line-height: 1.2; letter-spacing: -.035em; }
h2 { font-size: var(--text-heading); line-height: 1.3; letter-spacing: -.025em; }
h3 { font-size: 20px; line-height: 1.5; letter-spacing: -.015em; }
p { text-wrap: pretty; }
ol, ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; text-underline-offset: 5px; }
button, select, a { -webkit-tap-highlight-color: transparent; }
button, select { font: inherit; }
button, select, a[href] { cursor: pointer; }
button { color: inherit; }
button, select { border-radius: var(--radius-control); }
select { max-width: 100%; }
img, svg { display: block; flex-shrink: 0; }
img { max-width: 100%; height: auto; }
button:focus-visible, a:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
::selection { color: var(--foreground); background: var(--selection); }
* { scrollbar-width: thin; scrollbar-color: var(--scrollbar) var(--background); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border: 3px solid var(--background); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }
::-webkit-scrollbar-thumb:active { background: var(--accent); }
.icon { width: 20px; height: 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 20; top: 12px; left: 16px; padding: 8px 16px; color: var(--background); background: var(--foreground); border-radius: var(--radius-control); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

@media (max-width: 767px) {
  h3 { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media (forced-colors: active) {
  * { scrollbar-color: auto; }
  a:focus-visible, button:focus-visible, select:focus-visible { outline-color: Highlight; }
}

@media print {
  .site-header, .hero-links, .back-top, .skip-link { display: none; }
  body { color: black; background: white; font-size: 11pt; }
  .section, .hero { padding-block: 24px !important; }
  .container { width: 100% !important; }
  .hero-demo, .workspace-figure { break-inside: avoid; }
}

.container { width: min(1200px, calc(100% - var(--page-gutter) * 2)); margin-inline: auto; }
.section { padding-block: var(--section-space); background: var(--background); }
main > .section:nth-of-type(even) { background: var(--subtle); }
.section-heading { margin-bottom: 56px; }
.split-heading { display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: end; }
.section-heading > p { color: var(--muted); max-width: 35em; }
.site-header { position: sticky; top: 0; z-index: 10; background: var(--background); border-bottom: 1px solid var(--border); }
.header-inner { min-height: calc(var(--header-height) - 1px); display: flex; align-items: center; gap: 48px; }
.header-panel { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex: 1; }
.main-nav { display: flex; gap: 28px; margin-left: auto; }
.preferences { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; padding-block: 96px 104px; }
.hero-copy { min-width: 0; }
.hero-copy h1 > span { display: block; }
.hero-copy h1 > span:last-child { color: var(--accent); }
.hero-description { max-width: 31em; margin-top: 32px; color: var(--muted); }
.hero-links { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 32px; }
.hero-note { margin-top: 24px; color: var(--muted); font-size: 13px; }
.capabilities-layout { display: grid; grid-template-columns: 1.25fr 1fr; align-items: center; gap: 72px; }
.thinking-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 72px; align-items: end; }
.faq-layout { display: grid; grid-template-columns: .8fr 1.3fr; gap: 96px; align-items: start; }
.footer-main, .footer-bottom { display: flex; align-items: center; gap: 32px; }
.footer-main > p { margin-left: 8px; color: var(--muted); font-size: 14px; }
.footer-bottom { margin-top: 40px; padding-top: 24px; justify-content: space-between; font-size: 12px; color: var(--muted); }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; }
.filing-link { text-decoration: underline; text-underline-offset: 3px; }
.filing-link:hover { color: var(--foreground); }
.site-footer { padding-block: 40px 32px; }

@media (max-width: 1199px) and (min-width: 1024px) {
  .header-inner { gap: 32px; }
  .main-nav { gap: 20px; }
  .hero { gap: 32px; }
  .split-heading, .capabilities-layout, .thinking-intro { gap: 48px; }
}

@media (max-width: 1023px) {
  html:not(.is-enhanced) .site-header { position: static; }
  .header-inner { flex-wrap: wrap; justify-content: space-between; gap: 0; }
  .header-panel { flex-basis: 100%; padding-block: 8px 24px; flex-direction: column; align-items: stretch; gap: 16px; }
  .is-enhanced .header-panel { position: absolute; top: var(--header-height); inset-inline: 0; max-height: calc(100dvh - var(--header-height)); overflow-y: auto; padding: 16px var(--page-gutter) 24px; background: var(--background); border-bottom: 1px solid var(--border); box-shadow: var(--paper-shadow); }
  .main-nav { margin: 0; justify-content: space-between; gap: 12px; }
  .preferences { margin: 0; padding-top: 12px; gap: 24px; }
  .is-enhanced:not([data-menu-open]):not([data-desktop-nav]) .header-panel { display: none; }
  .is-enhanced .menu-toggle { display: inline-flex; }
  .hero { grid-template-columns: 1fr; gap: 56px; padding-block: 64px 80px; }
  .hero-copy { max-width: 680px; }
  .hero-copy h1 > span { display: inline; }
  .hero-copy h1 > span + span::before { content: ' '; }
  html:lang(zh-CN) .hero-copy h1 > span { display: block; }
  html:lang(zh-CN) .hero-copy h1 > span + span::before { content: none; }
  .hero-description { max-width: 36em; }
  .hero-demo { width: 100%; max-width: 680px; justify-self: center; }
  .split-heading, .thinking-intro { gap: 32px; }
  .capabilities-layout { grid-template-columns: 1fr; gap: 48px; }
  .workspace-figure { width: 100%; max-width: 720px; justify-self: center; }
  .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
  .faq-layout { grid-template-columns: .8fr 1.3fr; gap: 40px; }
  .footer-main { flex-wrap: wrap; gap: 24px; }
}

@media (max-width: 767px) {
  .section-heading { margin-bottom: 40px; }
  .split-heading, .thinking-intro, .faq-layout { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding-block: 48px 64px; gap: 48px; }
  .hero-description { margin-top: 24px; }
  .hero-links { gap: 16px; margin-top: 24px; }
  .hero-note { font-size: 12px; margin-top: 20px; }
  .main-nav { flex-direction: column; align-items: flex-start; gap: 0; }
  .main-nav a { width: 100%; }
  .capability-list { grid-template-columns: 1fr; gap: 0; }
  .faq-layout { gap: 32px; }
  .footer-main { gap: 16px 24px; }
  .footer-main > p { flex-basis: 100%; order: 3; margin-left: 0; font-size: 13px; }
  .footer-bottom { gap: 16px; flex-wrap: wrap; margin-top: 24px; }
}

.brand-link { display: inline-flex; align-items: center; min-height: 44px; flex-shrink: 0; border-radius: 4px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 600 25px/1 var(--font-brand); letter-spacing: -.035em; }
.brand-lockup { width: auto; height: 28px; color: var(--foreground); }
.main-nav a, .language-link { min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; line-height: 1.5; }
.main-nav a { position: relative; color: var(--muted); transition: color 160ms var(--ease-out); }
.main-nav a::after { position: absolute; content: ''; height: 1px; background: var(--accent); bottom: 6px; left: 0; right: 0; transform: scaleX(0); transform-origin: left; transition: transform 160ms var(--ease-out); }
.main-nav a:hover, .main-nav a:active { color: var(--foreground); }
.main-nav a:hover::after { transform: scaleX(1); }
.language-link { gap: 7px; border-radius: 4px; transition: color 160ms var(--ease-out); }
.language-link .icon { width: 16px; height: 16px; }
.language-link:hover { color: var(--accent); }
.theme-control { position: relative; display: flex; align-items: center; gap: 6px; color: var(--muted); }
.theme-control > .icon { width: 17px; height: 17px; }
.theme-control select { min-height: 44px; padding: 0 22px 0 2px; appearance: none; border: 0; background: transparent; color: var(--foreground); font-size: 13px; }
.theme-control option { color: var(--foreground); background: var(--surface); }
.theme-control .select-chevron { position: absolute; pointer-events: none; right: 1px; width: 14px; height: 14px; }
.icon-button { width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0; background: none; border: 0; transition: background 160ms var(--ease-out); }
.icon-button:hover { background: var(--subtle); }
.menu-toggle { display: none; }
.menu-toggle .menu-close-icon { display: none; }
[data-menu-open] .menu-toggle .menu-open-icon { display: none; }
[data-menu-open] .menu-toggle .menu-close-icon { display: block; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 20px; gap: 16px; border-radius: var(--radius-control); font-size: 14px; font-weight: 500; line-height: 1.5; transition: background 160ms var(--ease-out), transform 160ms var(--ease-out); }
.button-primary { color: var(--background); background: var(--foreground); }
.button-primary:hover { background: color-mix(in srgb, var(--foreground) 85%, var(--background)); }
.button-primary:active { transform: translateY(1px); }
.button .icon { width: 17px; height: 17px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; font-size: 14px; line-height: 1.5; transition: color 160ms var(--ease-out); }
.text-link .icon { width: 17px; height: 17px; transition: transform 160ms var(--ease-out); }
.text-link:hover { color: var(--accent); }
.text-link:hover .icon { transform: translate(2px, -2px); }
.back-top { display: flex; align-items: center; gap: 8px; margin-left: auto; min-height: 44px; font-size: 13px; }
.back-top:hover { color: var(--accent); }
.back-top .icon { width: 16px; height: 16px; }
@media (max-width: 767px) {
  .brand { font-size: 23px; }
  .brand-lockup { height: 26px; }
  .button { padding-inline: 16px; gap: 10px; }
  .text-link { gap: 5px; font-size: 13px; }
}

.demo-caption { display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 11px; line-height: 1.5; padding-bottom: 20px; }
.demo-caption > span:last-child { color: var(--foreground); }
.demo-scene { position: relative; display: grid; grid-template-columns: 144px 20px minmax(0, 1fr); align-items: center; gap: 12px; padding-block: 28px 48px; }
.source-title { margin-bottom: 14px; color: var(--muted); font-size: 11px; }
.source-stack { position: relative; }
.source-file { display: flex; align-items: center; gap: 8px; padding: 12px 8px; margin-bottom: 10px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-control); font-size: 11px; line-height: 1.45; }
.source-file .icon { width: 16px; height: 16px; color: var(--accent); }
.source-file span { overflow-wrap: anywhere; }
.source-connector { display: flex; align-items: center; justify-content: center; color: var(--muted); }
.source-connector .icon { width: 20px; height: 20px; }
.strategy-document { min-width: 0; padding: 24px; background: var(--surface); border-radius: var(--radius-panel); box-shadow: var(--paper-shadow); }
.document-topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 24px; }
.document-type { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.document-type .icon { width: 14px; height: 14px; }
.document-title { font-size: 24px; letter-spacing: -.03em; line-height: 1.4; }
.document-intro { margin-top: 12px; font-size: 11px; line-height: 1.75; color: var(--muted); }
.document-blocks { display: grid; gap: 16px; padding-top: 24px; }
.document-block h3 { font-size: 11px; font-weight: 600; line-height: 1.5; }
.document-block p { margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.75; }
.document-review { display: flex; align-items: center; gap: 6px; margin-top: 24px; padding-top: 12px; color: var(--muted); font-size: 10px; line-height: 1.5; }
.document-review .icon { width: 13px; height: 13px; color: var(--accent); }
.archive-note { position: absolute; bottom: 16px; right: 12px; display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 10px; }
.archive-note .icon { width: 14px; height: 14px; }
.demo-cycle { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 16px; font-size: 10px; line-height: 1.5; color: var(--muted); }
.demo-cycle li { display: flex; align-items: center; gap: 8px; min-width: 0; }
.demo-cycle li > .icon { width: 12px; height: 12px; }
.problem-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; }
.problem-item p { margin-top: 12px; color: var(--muted); font-size: var(--text-body); }
.process-caption { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 40px; padding-bottom: 16px; color: var(--muted); font-size: 12px; }
.process-caption > span:first-child { display: flex; align-items: center; gap: 8px; color: var(--foreground); }
.process-caption .icon { width: 16px; height: 16px; }
.process-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.step-track { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; color: var(--muted); }
.step-number { font-size: 14px; font-variant-numeric: tabular-nums; color: var(--accent); }
.step-track > .icon { width: 18px; height: 18px; }
.process-step h3 { font-size: 20px; }
.process-step p { margin-top: 16px; color: var(--muted); font-size: var(--text-body); }
.step-detail { display: block; margin-top: 24px; font-size: 11px; color: var(--muted); }
.process-closing { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 48px; padding-top: 24px; color: var(--muted); font-size: 14px; }
.process-closing .icon { color: var(--accent); width: 17px; height: 17px; }
.workspace-example { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-panel); background: var(--surface); }
.workspace-example .icon { width: 16px; height: 16px; }
.workspace-topbar { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 20px; font-size: 12px; line-height: 1.5; }
.workspace-topbar > span:first-child { display: flex; align-items: center; gap: 8px; }
.workspace-topbar .icon { color: var(--accent); width: 16px; height: 16px; }
.example-label { flex-shrink: 0; color: var(--muted); font-size: 10px; }
.workspace-body { display: grid; grid-template-columns: 144px minmax(0, 1fr); }
.workspace-sidebar { padding: 24px 16px; background: var(--subtle); font-size: 11px; }
.workspace-sidebar > p { color: var(--muted); font-size: 10px; line-height: 16px; margin: 0 4px 12px; }
.workspace-sidebar ul { display: grid; gap: 4px; }
.workspace-sidebar li { display: flex; gap: 8px; align-items: center; padding: 8px 4px; line-height: 1.5; color: var(--muted); }
.workspace-sidebar .current { background: var(--surface); border-radius: 5px; color: var(--foreground); }
.workspace-sidebar .current .icon { color: var(--accent); }
.workspace-reference { display: grid; grid-template-columns: 16px minmax(0, 1fr); align-items: start; gap: 8px; margin-top: 40px; padding: 12px 4px; }
.workspace-reference > span { grid-column: 1 / -1; color: var(--muted); margin-bottom: 4px; font-size: 10px; line-height: 16px; }
.workspace-reference > p { font-size: 10px; line-height: 16px; }
.workspace-document { padding: 24px 28px; min-width: 0; }
.workspace-document > .document-type { display: flex; width: fit-content; line-height: 16px; }
.workspace-document > h3 { font-size: 22px; line-height: 1.5; margin-top: 20px; }
.workspace-document > p { font-size: 12px; color: var(--muted); margin-top: 16px; line-height: 1.9; }
.review-note { display: flex; gap: 10px; margin-top: 28px; padding: 14px; background: var(--tint); border-radius: var(--radius-control); }
.review-note > .icon { color: var(--accent); }
.review-note > div { min-width: 0; }
.review-note span { display: block; font-size: 10px; line-height: 16px; color: var(--accent); }
.review-note p { margin-top: 4px; font-size: 11px; line-height: 1.75; color: var(--muted); }
.workspace-workflow { padding: 20px; }
.workspace-workflow > p { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; margin-bottom: 16px; }
.workspace-workflow ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.workspace-workflow li { position: relative; background: var(--subtle); padding: 10px 8px; border-radius: 6px; text-align: center; font-size: 10px; line-height: 1.5; }
.workspace-workflow li:not(:last-child)::after { position: absolute; content: ''; width: 12px; height: 1px; background: var(--border); top: 50%; right: -16px; }
.workspace-figure > figcaption { text-align: center; color: var(--muted); font-size: 12px; margin-top: 20px; }
.capability-item { display: flex; gap: 20px; padding-block: 24px; }
.capability-item:first-child { padding-top: 0; }
.capability-item:last-child { padding-bottom: 0; }
.capability-icon { padding-top: 5px; color: var(--accent); }
.capability-item h3 { font-size: 20px; }
.capability-item p { margin-top: 8px; color: var(--muted); font-size: var(--text-body); }
.thinking-mark { width: 48px; height: 48px; margin-bottom: 32px; }
.thinking-copy > p { color: var(--muted); }
.thinking-copy > .mission-statement { margin-top: 24px; color: var(--foreground); font-size: var(--text-body); }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; margin-top: 56px; padding-top: 32px; }
.principles h3 { font-size: 20px; }
.principles p { color: var(--muted); font-size: var(--text-body); margin-top: 12px; }
.faq-list > div { padding-block: 28px; }
.faq-list > div + div { border-top: 1px solid var(--border); }
.faq-list > div:first-child { padding-top: 0; }
.faq-list > div:last-child { padding-bottom: 0; }
.faq-list dt { font-size: 20px; font-weight: 500; line-height: 1.5; }
.faq-list dd { margin-top: 12px; color: var(--muted); font-size: var(--text-body); }

@media (min-width: 1024px) and (max-width: 1199px) {
  .demo-scene { grid-template-columns: 120px 16px minmax(0, 1fr); gap: 8px; }
  .strategy-document { padding: 20px; }
  .document-title { font-size: 22px; }
  .workspace-body { grid-template-columns: 120px minmax(0, 1fr); }
  .workspace-document { padding: 24px 20px; }
}

@media (max-width: 1023px) {
  .demo-scene { grid-template-columns: 176px 20px minmax(0, 1fr); gap: 16px; }
  .source-file { font-size: 13px; padding: 16px 12px; }
  .source-title { font-size: 12px; }
  .document-block p, .document-intro, .document-review { font-size: 12px; }
  .document-block h3 { font-size: 13px; }
  .document-title { font-size: 28px; }
  .archive-note { font-size: 11px; }
  .demo-caption, .demo-cycle { font-size: 12px; }
  .problem-list { gap: 24px; }
  .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
  .capability-item { padding: 0; border: 0; }
  .principles { gap: 32px; }
}

@media (max-width: 767px) {
  .demo-caption { font-size: 11px; padding-bottom: 16px; }
  .demo-scene { display: flex; flex-direction: column; align-items: stretch; padding-top: 20px; padding-bottom: 48px; gap: 16px; }
  .source-stack { display: flex; flex-wrap: wrap; gap: 8px; }
  .source-title { flex-basis: 100%; margin: 0; font-size: 11px; }
  .source-file { flex: 1; min-width: 0; padding: 10px 8px; gap: 5px; font-size: 10px; margin: 0; }
  .source-file .icon { width: 13px; height: 13px; }
  .source-connector { display: none; }
  .strategy-document { padding: 24px; }
  .document-title { font-size: 24px; }
  .document-topline { margin-bottom: 20px; }
  .document-blocks { gap: 16px; padding-top: 20px; }
  .document-block p { font-size: 12px; }
  .document-review { font-size: 11px; }
  .archive-note { right: 0; font-size: 10px; }
  .demo-cycle { font-size: 10px; gap: 16px; }
  .problem-list { grid-template-columns: 1fr; gap: 28px; }
  .problem-item p { margin-top: 8px; }
  .process-caption { gap: 16px; font-size: 11px; margin-bottom: 32px; }
  .process-caption > span:last-child { flex-shrink: 0; }
  .process-steps { grid-template-columns: 1fr; gap: 0; }
  .process-step { position: relative; padding: 0 0 32px 48px; }
  .process-step:not(:last-child)::before { content: ''; position: absolute; left: 13px; top: 34px; bottom: 6px; width: 1px; background: var(--border); }
  .process-step:last-child { padding-bottom: 0; }
  .step-track { position: absolute; top: 0; left: 0; margin: 0; }
  .step-number { font-size: 13px; }
  .step-track > .icon { display: none; }
  .process-step p { margin-top: 8px; }
  .step-detail { margin-top: 12px; font-size: 11px; }
  .process-closing { margin-top: 32px; font-size: 12px; align-items: flex-start; }
  .process-closing .icon { margin-top: 3px; flex-shrink: 0; }
  .workspace-topbar { padding: 16px; gap: 12px; font-size: 11px; }
  .workspace-body { grid-template-columns: 100px minmax(0, 1fr); }
  .workspace-sidebar { padding: 24px 12px; }
  .workspace-sidebar li { font-size: 10px; }
  .workspace-reference { margin-top: 24px; }
  .workspace-document { padding: 24px 16px; }
  .workspace-document > h3 { font-size: 18px; margin-top: 16px; }
  .workspace-document > p { font-size: 11px; line-height: 1.8; }
  .review-note { padding: 10px; gap: 8px; margin-top: 20px; }
  .review-note p { font-size: 10px; }
  .workspace-workflow { padding: 16px; }
  .workspace-workflow ol { gap: 16px; }
  .workspace-workflow li { font-size: 9px; padding-inline: 5px; }
  .workspace-workflow li:not(:last-child)::after { right: -13px; width: 10px; }
  .workspace-figure > figcaption { font-size: 11px; }
  .capability-item { padding-block: 24px; gap: 16px; }
  .process-step h3, .capability-item h3, .principles h3 { font-size: 18px; }
  .thinking-mark { width: 40px; height: 40px; margin-bottom: 24px; }
  .thinking-intro { gap: 32px; }
  .thinking-copy > .mission-statement { margin-top: 16px; }
  .principles { grid-template-columns: 1fr; gap: 24px; margin-top: 40px; padding-top: 24px; }
  .principles p { margin-top: 8px; }
  .faq-list dt { font-size: 17px; }
  .faq-list > div { padding-block: 24px; }
}