:root {
  color-scheme: light;
  --canvas: #f2f2f2;
  --surface: #fff;
  --ink: #191919;
  --muted: #606060;
  --line: #d1d1d1;
  --stage: #e6e6e6;
  --content: 1360px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  color: var(--ink);
  background: var(--canvas);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; font-size: 16px; line-height: 1.65; -webkit-text-size-adjust: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
main:focus, section:focus, article:focus, footer:focus, figure:focus { outline: none; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { line-height: 1.25; text-wrap: balance; }
img { max-width: 100%; display: block; height: auto; }
.container { width: min(var(--content), calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: fixed; top: 80px; left: 16px; z-index: 110; padding: 10px 18px; background: white; border: 1px solid var(--ink); transform: translateY(-240px); }
.skip-link:focus { transform: none; }
.site-header { position: fixed; top: 12px; left: 50%; transform: translateX(-50%); z-index: 100; width: min(720px, calc(100% - 32px)); min-height: 56px; padding: 4px 8px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: #222323; color: white; border: 1px solid #383939; border-radius: 8px; }
.brand { display: inline-flex; align-items: center; min-height: 44px; padding-inline: 8px; font-size: 20px; font-weight: 700; letter-spacing: -.03em; white-space: nowrap; }
.site-nav { display: flex; gap: 20px; align-items: center; font-size: 13px; font-weight: 600; }
.site-nav a { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding-inline: 8px; }
.site-nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
.site-nav .nav-cta { background: #f7f7f7; color: var(--ink); border-radius: 4px; padding-inline: 14px; }
.site-header a:focus-visible, .site-header button:focus-visible { outline-color: white; outline-offset: 2px; }
.nav-toggle { display: none; min-width: 64px; min-height: 44px; padding: 8px; align-items: center; justify-content: center; gap: 10px; border: 0; border-radius: 4px; color: white; background: transparent; cursor: pointer; font-size: 13px; }
.menu-icon { width: 21px; height: 14px; border-top: 2px solid currentColor; border-bottom: 2px solid currentColor; }
.hero { padding-block: 152px 96px; }
.eyebrow { font-size: 13px; color: var(--muted); }
h1 { font-size: 58px; line-height: 1.25; font-weight: 450; letter-spacing: -.05em; margin-top: 24px; max-width: 780px; }
.hero-bottom { display: flex; justify-content: space-between; align-items: start; gap: 64px; margin-top: 28px; }
.hero-description { max-width: 800px; color: var(--muted); }
.hero-description > p:first-child { max-width: 670px; font-size: 18px; }
.hero-audience { margin-top: 16px; font-size: 16px; }
.hero-actions { flex-shrink: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 48px; padding: 10px 16px; border: 1px solid transparent; border-radius: 4px; font-size: 15px; font-weight: 650; transition: background-color 150ms, color 150ms; }
.button-primary { color: white; background: var(--ink); }
.button-primary:hover { background: #373737; }
.hero-actions .button { min-width: 176px; }
.hero-secondary { margin-top: 16px; }
.hero-secondary a { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; font-weight: 650; }
.hero-secondary a:hover { text-decoration: underline; text-underline-offset: 5px; }
.hero-tagline { color: var(--muted); font-size: 13px; margin-top: 8px; }
.hero-stage { display: grid; grid-template-columns: minmax(0, 1fr) 408px; align-items: center; gap: 80px; padding: 44px 64px; margin: 40px 0 0; background: var(--stage); border-radius: 8px; }
.stage-copy h2 { max-width: 630px; font-size: 42px; font-weight: 450; letter-spacing: -.04em; }
.stage-caption { margin-top: 32px; font-size: 17px; color: var(--muted); }
.stage-device { width: 246px; max-width: 100%; justify-self: center; }
.stage-device img { width: 100%; border-radius: 18px; }
.stage-image-label { margin-top: 12px; color: var(--muted); font-size: 13px; }
.capabilities { padding-block: 0 96px; }
.section-heading { margin-bottom: 64px; }
.section-heading h2 { font-size: 40px; font-weight: 450; letter-spacing: -.04em; margin-top: 20px; }
.section-intro { color: var(--muted); margin-top: 20px; max-width: 880px; }
.feature-layout { display: grid; grid-template-columns: 320px minmax(0, 1fr); align-items: start; gap: 80px; }
.feature-index { position: sticky; top: 100px; }
.feature-index ol { list-style: none; margin: 0; padding: 0; }
.feature-link { display: block; min-height: 66px; padding: 18px 4px; color: var(--muted); }
.index-heading { display: flex; gap: 16px; align-items: baseline; font-size: 21px; font-weight: 450; }
.index-number { font-size: 13px; font-variant-numeric: tabular-nums; min-width: 22px; }
.index-summary { display: block; padding-left: 38px; margin-top: 10px; font-size: 14px; max-width: 300px; }
.feature-link:hover, .feature-link[aria-current="location"] { color: var(--ink); }
.scrollspy-ready .feature-link:not([aria-current="location"]) .index-summary { display: none; }
.feature-panels { min-width: 0; }
.feature-panel + .feature-panel { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--line); }
.panel-heading { display: flex; align-items: baseline; gap: 8px; margin-bottom: 24px; color: var(--muted); }
.panel-number { font-size: 13px; }
.panel-heading h3 { font-size: 13px; font-weight: 650; }
.process-visual { min-height: 240px; padding: 24px; display: flex; flex-direction: column; gap: 48px; background: var(--stage); border-radius: 8px; }
.diagram-label { font-size: 13px; color: var(--muted); }
.process-chain { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.process-chain li { position: relative; padding: 12px 16px; background: white; border-radius: 4px; }
.process-chain li + li::before { content: "→"; position: absolute; left: -26px; top: 50%; transform: translateY(-50%); font-size: 20px; color: var(--muted); }
.process-chain strong { font-size: 16px; font-weight: 650; }
.records-diagram { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.records-diagram li { padding: 12px 16px; background: white; border-radius: 4px; }
.records-diagram strong { display: block; font-size: 16px; font-weight: 650; }
.records-diagram span { display: block; font-size: 13px; color: var(--muted); margin-top: 8px; }
.workflow-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; }
.detail-item, .role-list li { padding: 24px; background: white; border-radius: 8px; }
.detail-item h4, .role-list h4 { font-size: 21px; font-weight: 650; }
.detail-item p, .subsection-heading p, .role-list p, .money-panel p { color: var(--muted); margin-top: 14px; }
.subsection-heading { margin-top: 16px; }
.subsection-heading h4 { font-size: 28px; font-weight: 450; letter-spacing: -.03em; }
.role-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.money-panel { margin-top: 32px; }
.money-panel h4 { font-size: 28px; font-weight: 450; }
.money-panel .money-summary { color: var(--ink); margin-top: 18px; }
.business-story { padding-block: 64px 48px; background: var(--ink); color: white; }
.story-content .eyebrow, .story-description { color: #d1d1d1; }
.story-content h2 { margin-top: 24px; max-width: 820px; font-size: 48px; font-weight: 450; letter-spacing: -.04em; }
.story-description { margin-top: 24px; max-width: 820px; }
.story-diagram { margin-top: 40px; padding: 24px; background: #292929; border-radius: 8px; }
.story-diagram > p { color: #d1d1d1; font-size: 13px; }
.story-flow { list-style: none; padding: 0; margin: 36px 0 48px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.story-flow li { padding: 12px 16px; background: var(--canvas); border-radius: 4px; color: var(--ink); font-size: 18px; font-weight: 650; }
.story-cta { display: inline-flex; align-items: center; min-height: 44px; margin-top: 24px; font-size: 16px; font-weight: 650; }
.story-cta:hover { text-decoration: underline; text-underline-offset: 5px; }
.business-story a:focus-visible { outline-color: white; }
.solutions { padding-block: 32px 64px; background: var(--ink); color: white; }
.solutions .eyebrow, .solutions .section-intro { color: #d1d1d1; }
.solutions .section-heading { max-width: 900px; margin-bottom: 40px; }
.solutions h2 { font-size: 44px; }
.solution-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.solution-list article { padding: 24px 20px; min-height: 76px; background: #292929; border-radius: 4px; }
.solution-list h3 { font-size: 16px; font-weight: 650; line-height: 1.65; }
.preview { padding-block: 64px; }
.gallery-intro { margin-top: 24px; color: var(--muted); }
.product-label { font-size: 13px; color: var(--muted); }
.theme-toc { display: flex; flex-wrap: wrap; gap: 12px; margin-block: 24px 32px; }
.theme-toc a { display: inline-flex; align-items: center; justify-content: center; min-width: 72px; min-height: 44px; padding: 8px 16px; background: var(--stage); border-radius: 4px; font-size: 14px; }
.theme-toc a:hover { text-decoration: underline; text-underline-offset: 4px; }
.theme-group + .theme-group { margin-top: 56px; }
.theme-group-title { margin-bottom: 24px; font-size: 28px; font-weight: 450; }
.theme-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 24px; }
.theme-gallery-seasons { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.theme-gallery-lunar { max-width: 900px; }
.theme-card { min-width: 0; margin: 0; padding: 24px; background: white; border-radius: 8px; }
.theme-name { font-size: 21px; font-weight: 700; line-height: 1.65; }
.theme-caption { min-height: 43px; margin-top: 8px; font-size: 13px; line-height: 1.65; }
.theme-image { width: 100%; max-width: 390px; height: auto; margin: 20px auto 0; }
.theme-full { display: flex; align-items: center; min-height: 44px; width: 100%; margin-top: 24px; gap: 4px; font-size: 13px; font-weight: 700; }
.theme-full:hover { text-decoration: underline; text-underline-offset: 4px; }
.preview-explanation { max-width: 960px; margin-top: 64px; }
.preview-explanation > h3 { font-size: 28px; font-weight: 450; }
.preview-explanation > p { margin-top: 20px; color: var(--muted); }
.design-principles { list-style: none; margin: 32px 0 0; padding: 0; }
.design-principles li { margin-top: 24px; }
.design-principles h4 { font-size: 21px; font-weight: 650; }
.design-principles p { color: var(--muted); margin-top: 12px; }
.experiences { padding-block: 40px 64px; }
.scenario-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.scenario-card { padding: 24px; border-radius: 8px; background: var(--stage); }
.scenario-card:first-child { background: var(--ink); color: white; }
.scenario-number { font-size: 13px; color: var(--muted); }
.scenario-card h3 { margin-top: 24px; font-size: 28px; font-weight: 450; letter-spacing: -.03em; }
.scenario-card > p:not(.scenario-number) { margin-top: 18px; color: var(--muted); }
.scenario-card:first-child > p { color: #d1d1d1; }
.text-link { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-size: 15px; font-weight: 650; }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.scenario-card:first-child a:focus-visible { outline-color: white; }
.guide { padding-block: 64px; }
.guide-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.guide-steps li { padding: 24px; background: white; border-radius: 8px; }
.step-number { font-size: 13px; color: var(--muted); }
.guide-steps h3 { font-size: 21px; font-weight: 650; margin-top: 16px; }
.guide-steps p { color: var(--muted); margin-top: 16px; }
.faq-section { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 0 80px; margin-top: 80px; }
.faq-section > h2 { grid-row: span 6; font-size: 32px; font-weight: 450; letter-spacing: -.03em; }
.faq-item { grid-column: 2; border-bottom: 1px solid var(--line); padding-block: 0 28px; }
.faq-item + .faq-item { padding-top: 28px; }
.faq-item h3 { font-size: 21px; font-weight: 650; }
.faq-item p { color: var(--muted); margin-top: 14px; }
.guide-notice { color: var(--muted); font-size: 14px; margin-top: 40px; }
.closing-cta { padding-block: 0 64px; }
.closing-inner { padding: 40px 32px; border-radius: 8px; background: var(--ink); color: white; }
.closing-inner .eyebrow, .closing-inner p { color: #d1d1d1; }
.closing-inner h2 { max-width: 760px; margin-top: 24px; font-size: 42px; font-weight: 450; letter-spacing: -.04em; }
.closing-inner p { margin-top: 24px; max-width: 760px; }
.closing-inner .eyebrow { margin-top: 0; }
.closing-inner .button { margin-top: 24px; }
.button-light { background: white; color: var(--ink); }
.button-light:hover { background: var(--stage); }
.closing-inner a:focus-visible { outline-color: white; }
.site-footer { background: #222323; color: white; }
.footer-inner { display: flex; justify-content: space-between; align-items: start; gap: 40px; padding-block: 48px; }
.footer-brand { font-size: 24px; font-weight: 650; }
.footer-tagline { margin-top: 12px; }
.footer-description { color: #d1d1d1; font-size: 14px; margin-top: 24px; }
.footer-nav { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.footer-nav a, .back-link { display: inline-flex; align-items: center; min-height: 44px; }
.back-link { gap: 16px; font-size: 14px; white-space: nowrap; }
.footer-nav a:hover, .back-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.site-footer a:focus-visible { outline-color: white; }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-block: 20px 28px; border-top: 1px solid #454646; color: #d1d1d1; font-size: 14px; }
.footer-legal p { min-width: 0; overflow-wrap: anywhere; }
.icp-link { display: inline-flex; align-items: center; min-height: 44px; text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1099px) {
  .container { width: calc(100% - 64px); }
  .hero-bottom { display: block; }
  .hero-actions { margin-top: 24px; }
  .hero-stage { grid-template-columns: minmax(0, 1fr) 260px; gap: 40px; padding-inline: 40px; }
  .stage-copy h2 { font-size: 34px; }
  .feature-layout { display: block; }
  .feature-index { position: static; margin-bottom: 48px; }
  .feature-index ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
  .solution-list, .theme-gallery-seasons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-section { grid-template-columns: 240px minmax(0, 1fr); gap: 0 40px; }
}
@media (max-width: 767px) {
  html { scroll-padding-top: 150px; }
  html.menu-ready { scroll-padding-top: 96px; }
  .container { width: calc(100% - 32px); }
  .site-header { flex-wrap: wrap; gap: 0; padding-inline: 8px; }
  .site-nav { width: 100%; justify-content: space-between; gap: 4px; padding-block: 4px; }
  .site-nav a { padding-inline: 6px; }
  .site-nav .nav-cta { padding-inline: 8px; }
  .menu-ready .nav-toggle { display: inline-flex; margin-left: auto; }
  .menu-ready .site-nav { display: none; }
  .menu-ready .site-header.is-open .site-nav { display: flex; flex-direction: column; align-items: stretch; border-top: 1px solid #444; padding-top: 8px; margin-top: 4px; }
  .site-header.is-open .site-nav a { justify-content: space-between; padding-inline: 14px; min-height: 48px; }
  .hero { padding-block: 152px 64px; }
  h1 { font-size: 38px; }
  .hero-description > p:first-child { font-size: 16px; }
  .hero-audience { font-size: 16px; }
  .hero-stage { grid-template-columns: 1fr; gap: 32px; padding: 28px 24px; }
  .stage-copy h2 { font-size: 28px; }
  .stage-caption { font-size: 14px; margin-top: 24px; }
  .stage-device { width: 236px; }
  .section-heading { margin-bottom: 40px; }
  .section-heading h2 { font-size: 28px; }
  .feature-index ol { display: block; }
  .index-heading { font-size: 20px; }
  .feature-link { min-height: 60px; padding-block: 16px; }
  .feature-panel + .feature-panel { margin-top: 48px; padding-top: 40px; }
  .process-visual { min-height: 220px; padding: 20px; gap: 40px; }
  .process-chain { gap: 24px; }
  .process-chain li { padding-inline: 12px; }
  .process-chain li + li::before { left: -22px; }
  .process-chain strong { font-size: 14px; }
  .workflow-detail, .role-list { grid-template-columns: 1fr; }
  .detail-item, .role-list li { padding: 20px; }
  .subsection-heading h4, .money-panel h4 { font-size: 24px; }
  .records-diagram { grid-template-columns: 1fr; gap: 12px; }
  .records-diagram li { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
  .records-diagram span { margin-top: 0; }
  .capabilities { padding-bottom: 64px; }
  .business-story { padding-block: 64px 32px; }
  .story-content h2 { font-size: 30px; }
  .story-diagram { padding: 20px; }
  .story-flow { grid-template-columns: 1fr; margin-block: 24px 12px; gap: 12px; }
  .solutions { padding-block: 24px 48px; }
  .solutions h2 { font-size: 30px; }
  .solution-list { grid-template-columns: 1fr; gap: 16px; }
  .theme-group + .theme-group { margin-top: 32px; }
  .theme-group-title { font-size: 24px; }
  .theme-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .theme-card { padding: 12px; }
  .theme-toc { gap: 8px; }
  .theme-toc a { min-width: 64px; padding-inline: 12px; }
  .preview-explanation { margin-top: 48px; }
  .preview-explanation > h3 { font-size: 24px; }
  .scenario-list, .guide-steps { grid-template-columns: 1fr; gap: 24px; }
  .scenario-card h3 { font-size: 26px; }
  .faq-section { display: block; margin-top: 64px; }
  .faq-section > h2 { font-size: 28px; margin-bottom: 32px; }
  .faq-item h3 { font-size: 20px; }
  .guide-notice { margin-top: 28px; }
  .closing-inner { padding: 32px 24px; }
  .closing-inner h2 { font-size: 30px; }
  .footer-inner { display: block; padding-block: 40px; }
  .footer-nav { flex-direction: row; flex-wrap: wrap; gap: 0 24px; margin-top: 24px; }
  .back-link { margin-top: 24px; }
}
@media (max-width: 359px) {
  .site-nav { font-size: 12px; }
  .site-nav .nav-cta { padding-inline: 5px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (forced-colors: active) {
  .site-header, .button, .process-visual, .theme-card, .detail-item, .role-list li, .scenario-card { border: 1px solid CanvasText; }
  .feature-link[aria-current="location"] { text-decoration: underline; }
}