/* About: the founder's experience becomes a shared product foundation.
   Keep the site's Manrope / Sarabun pairing and theme tokens. */
.about-main { padding-bottom: 4rem; }
.about-main h1, .about-main h2, .about-main h3, .about-main h4 { line-height: 1.4; }
.about-main p { max-width: none; }
.about-main section[id], .about-main article[id] { scroll-margin-top: 7rem; }
.about-kicker { display: block; color: var(--gold); font-size: .73rem; font-weight: 800; letter-spacing: .12em; }
.about-hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3.5rem; align-items: center; padding: 3rem 0 3.5rem; }
.about-hero h1 { max-width: none; margin: 1rem 0 1.25rem; font-size: clamp(2.1rem, 3.5vw, 3.1rem); letter-spacing: -.025em; }
.about-hero h1 > span { display: block; color: var(--brand); }
.about-lead { font-size: 1.13rem; }
.about-hero .actions { gap: .65rem; }
.about-hero .btn { font-size: .88rem; }
.about-platform { margin: 0; padding: 2rem; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); }
.about-platform-brand { display: flex; align-items: center; justify-content: center; gap: .65rem; font-size: 1.65rem; }
.about-platform-brand img { object-fit: contain; }
.about-platform-label { margin: .4rem 0 1.75rem; text-align: center; font-size: .75rem; }
.about-platform-products { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.about-work { --about-accent: var(--color-work); }
.about-sme { --about-accent: var(--color-sme); }
.about-forge { --about-accent: var(--brand-2); }
.about-life { --about-accent: var(--color-life); }
.about-platform-products a { display: grid; justify-items: center; gap: .35rem; padding: 1rem .45rem; border: 1px solid var(--line); border-top: 3px solid var(--about-accent); border-radius: 10px; background: var(--bg-0); }
.about-platform-products a:hover { border-color: var(--about-accent); }
.about-platform-products img { object-fit: contain; }
.about-platform-products strong { font-size: .9rem; }
.about-platform-products span { color: var(--muted); font-size: .65rem; text-align: center; }
.about-platform-foundation { position: relative; display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1rem; margin-top: 1.6rem; padding: .85rem .5rem; border: 1px solid var(--line); border-radius: 8px; color: var(--brand); background: var(--bg-1); font-size: .67rem; font-weight: 700; }
.about-platform-foundation::before { content: ''; position: absolute; height: 1.6rem; width: 1px; left: 50%; top: -1.6rem; background: var(--line); }
.about-platform figcaption { margin-top: .9rem; color: var(--muted); font-size: .8rem; text-align: center; }
.about-context { display: grid; grid-template-columns: repeat(4, 1fr); padding: 1.75rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.about-context p { display: flex; flex-direction: column; gap: .4rem; margin: 0; padding: 0 1.5rem; border-left: 1px solid var(--line); }
.about-context p:first-child { padding-left: 0; border-left: 0; }
.about-context strong { color: var(--text); font-size: 1.65rem; font-weight: 800; }
.about-context span { font-size: .8rem; }
.about-source-note { margin: .75rem 0 0; font-size: .7rem; }
.about-section { padding: 4.5rem 0; border-bottom: 1px solid var(--line); }
.about-section-heading { max-width: 800px; margin-bottom: 2rem; }
.about-section-heading h2, .about-thesis h2, .about-collaborate h2 { margin-top: .8rem; font-size: clamp(1.6rem, 2.7vw, 2.25rem); }
.about-section-heading > p { margin-bottom: 0; }
:is(.about-founder-infographic, .about-concept-infographic) { margin: 0 0 2.5rem; scroll-margin-top: 7rem; }
:is(.about-founder-infographic, .about-concept-infographic) > a { display: block; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; cursor: zoom-in; }
:is(.about-founder-infographic, .about-concept-infographic) img { display: block; width: 100%; height: auto; }
:is(.about-founder-infographic, .about-concept-infographic) figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1rem; padding-top: .5rem; color: var(--muted); font-size: .8rem; line-height: 1.6; }
:is(.about-founder-infographic, .about-concept-infographic) figcaption a { display: inline-flex; align-items: center; min-height: 44px; color: var(--brand); text-decoration: underline; text-underline-offset: .2em; }
.about-founder { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; }
.about-signature { display: block; font-size: 4.5rem; line-height: 1.2; font-weight: 800; letter-spacing: -.06em; margin-bottom: 1rem; }
.about-signature span { color: var(--gold); }
.about-founder-name h3 { font-size: 1.05rem; }
.about-founder-name > p { margin: .45rem 0; font-size: .85rem; }
.about-founder-name .about-founder-date { margin-top: 1.2rem; max-width: 270px; font-size: .78rem; }
.about-founder-story p:first-child { margin-top: 0; }
.about-timeline { list-style: none; padding: 0; margin: 2.5rem 0 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.about-timeline li { position: relative; padding: 1.5rem 1.4rem 0 0; border-top: 1px solid var(--line); }
.about-timeline li::before { content: ''; position: absolute; left: 0; top: -5px; width: 9px; height: 9px; background: var(--gold); border-radius: 50%; }
.about-timeline time { color: var(--gold); font-size: .83rem; font-weight: 800; }
.about-timeline h3 { margin-top: .45rem; }
.about-timeline p { font-size: .82rem; margin-bottom: 0; }
.about-focus-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.about-focus-card { display: flex; flex-direction: column; padding: 1.6rem; background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--about-accent); border-radius: 14px; transition: border-color .15s ease; }
.about-focus-card:hover { border-color: var(--about-accent); }
.about-product-name { display: flex; align-items: center; gap: .85rem; margin-bottom: 1.6rem; }
.about-product-name img { object-fit: contain; }
.about-product-name h3 { font-size: 1.3rem; }
.about-product-name div > span { font-size: .73rem; color: var(--muted); }
.about-link-arrow { margin-left: auto; color: var(--about-accent); font-size: 1.5rem; }
.about-focus-card h4 { font-size: 1.05rem; margin: 0; }
.about-focus-card p { font-size: .9rem; margin: .65rem 0 1.3rem; }
.about-partner-route { display: block; margin-top: auto; padding-top: .85rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.about-text-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 1rem; color: var(--brand); font-size: .9rem; font-weight: 700; }
.about-text-link:hover { text-decoration: underline; }
.about-role-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.about-role-card { display: flex; flex-direction: column; padding: 1.4rem; border: 1px solid var(--line); border-top: 4px solid var(--about-accent); border-radius: 14px; background: var(--surface); }
.about-role-brand { display: flex; align-items: center; gap: .7rem; margin-bottom: 1rem; font-size: 1.2rem; }
.about-role-brand img { object-fit: contain; }
.about-role-card h3 { font-size: 1.15rem; }
.about-role-subtitle { margin: .45rem 0 1.5rem; font-size: .82rem; }
.about-role-flow { margin: auto 0 0; }
.about-role-input { text-align: center; font-size: .85rem; padding: .7rem; background: var(--bg-1); border: 1px solid var(--line); border-radius: 8px; }
.about-role-engine { position: relative; display: flex; flex-direction: column; align-items: center; gap: .25rem; text-align: center; margin: 1.7rem 0; padding: 1rem .5rem; border: 2px solid var(--about-accent); border-radius: 10px; background: var(--bg-0); }
.about-role-engine::before, .about-role-engine::after { content: '↓'; position: absolute; left: 50%; transform: translateX(-50%); color: var(--muted); line-height: 1.7rem; }
.about-role-engine::before { top: -1.8rem; }
.about-role-engine::after { bottom: -1.8rem; }
.about-role-engine strong { font-size: 1.3rem; }
.about-role-engine span { color: var(--muted); font-size: .77rem; }
.about-role-outputs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .35rem; }
.about-role-outputs span { display: flex; align-items: center; justify-content: center; min-height: 3.7rem; padding: .5rem .25rem; border: 1px solid var(--line); border-radius: 7px; background: var(--bg-1); text-align: center; font-size: .73rem; line-height: 1.6; overflow-wrap: anywhere; }
.about-role-flow figcaption { color: var(--muted); font-size: .83rem; line-height: 1.8; margin-top: 1rem; }
.about-role-card .about-text-link { margin-top: auto; padding-top: 1rem; font-size: .82rem; }
.about-role-together { padding: 1.3rem 1.5rem; margin: 1.25rem 0 2.5rem; border-left: 3px solid var(--gold); background: var(--bg-1); }
.about-role-together strong { font-size: .95rem; }
.about-role-together p { font-size: .9rem; margin: .5rem 0; }
.about-role-together small { color: var(--muted); font-size: .75rem; }
.about-concept-panel { padding: 2rem; margin-top: 1.5rem; border: 1px solid var(--line); border-left: 4px solid var(--about-accent); border-radius: 16px; background: var(--surface); }
.about-concept-heading { display: flex; align-items: center; gap: 1.3rem; }
.about-concept-number { flex: 0 0 auto; font-weight: 800; font-size: 2.9rem; line-height: 1.15; color: var(--text); letter-spacing: -.05em; }
.about-concept-heading h3 { margin-top: .35rem; font-size: 1.3rem; }
.about-concept-panel > p { font-size: .95rem; }
.about-build-flow { margin: 1.75rem 0 0; }
.about-build-flow figcaption { font-size: .8rem; font-weight: 700; margin-bottom: 1rem; }
.about-build-flow ol { display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; padding: 0; margin: 0; gap: 1.3rem; }
.about-build-flow li { position: relative; padding: 1.1rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-0); }
.about-build-flow li:not(:last-child)::after { content: '→'; position: absolute; right: -1.1rem; top: 45%; color: var(--muted); }
.about-step-number { color: var(--brand); font-size: .75rem; font-weight: 800; }
.about-build-flow h4 { margin: .5rem 0; font-size: .9rem; }
.about-build-flow p { font-size: .8rem; margin: 0; }
.about-reuse-loop { display: flex; align-items: center; gap: .75rem; margin-top: 1rem; padding: .8rem 1rem; background: var(--bg-1); border-radius: 8px; }
.about-reuse-loop > span { color: var(--brand); font-size: 1.8rem; }
.about-reuse-loop p { color: var(--text); }
.about-ninec-grid, .about-eightd-grid { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.about-ninec-grid { grid-template-columns: repeat(3, 1fr); }
.about-ninec-grid li { padding: 1.1rem; background: var(--bg-0); }
.about-ninec-grid li > span { color: var(--gold); font-size: .8rem; font-weight: 800; }
.about-ninec-grid h4 { font-size: .95rem; margin: .35rem 0; }
.about-ninec-grid p { margin: 0; font-size: .8rem; }
.about-eightd-grid { grid-template-columns: 1fr 1fr; }
.about-eightd-grid li { display: flex; gap: .8rem; align-items: start; padding: 1rem; background: var(--bg-0); }
.about-dimension-id { color: var(--brand); font-size: .75rem; font-weight: 800; padding-top: .2rem; }
.about-eightd-grid h4 { margin: 0; font-size: .9rem; }
.about-eightd-grid p { margin: .25rem 0 0; font-size: .8rem; }
.about-work-example { border-left: 2px solid var(--about-accent); padding: .2rem 0 .2rem 1rem; margin-top: 1.5rem; }
.about-work-example strong { font-size: .88rem; }
.about-work-example p { margin: .4rem 0 0; font-size: .88rem; }
.about-concept-panel .about-concept-note { font-size: .78rem; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.about-work-nav { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2rem; }
.about-work-nav a { display: inline-flex; align-items: center; min-height: 44px; padding: .5rem 1.2rem; border: 1px solid var(--line); border-radius: 8px; color: var(--brand); font-weight: 700; background: var(--bg-1); }
.about-work-nav a:hover { border-color: var(--brand); }
.about-feg-grid li > span { color: var(--brand); font-size: 1.15rem; }
#concept-feg .about-reuse-loop p, #concept-feg .about-feg-bridge { font-size: .85rem; }
.about-concept-closing { text-align: center; font-size: .85rem; margin: 1.75rem 0 0; }
.about-studio-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.about-studio-heading .about-product-name { margin-bottom: 0; }
.about-studio-status { padding: .4rem .8rem; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-1); color: var(--text); font-size: .75rem; font-weight: 700; }
.about-studio-example { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; padding: 1.5rem 0; margin-top: 1.5rem; border-top: 1px solid var(--line); }
.about-studio-example h4 { margin: .5rem 0; font-size: 1rem; }
.about-studio-example p, .about-studio-example ul { font-size: .9rem; line-height: 1.8; color: var(--muted); }
.about-studio-example p { margin: .5rem 0 0; }
.about-studio-example ul { margin: .5rem 0 0; padding-left: 1.2rem; }
.about-studio-example li + li { margin-top: .4rem; }
.about-studio-panel .about-reuse-loop p { margin: 0; font-size: .85rem; }
.about-thesis { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.about-principles article { padding: 0 0 1.2rem 1.4rem; border-left: 2px solid var(--line); }
.about-principles article:first-child { border-left-color: var(--gold); }
.about-principles article:last-child { padding-bottom: 0; }
.about-principles h3 { font-size: 1rem; }
.about-principles p { margin: .4rem 0 0; font-size: .9rem; }
.about-roadmap { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.about-roadmap li { padding-top: 1rem; border-top: 3px solid var(--line); }
.about-roadmap li.about-roadmap-current { border-top-color: var(--brand); }
.about-roadmap-status { display: block; color: var(--muted); font-size: .7rem; margin-bottom: 1rem; }
.about-roadmap time { color: var(--text); font-size: 1.65rem; font-weight: 800; }
.about-roadmap h3 { margin-top: .5rem; font-size: 1rem; color: var(--brand); }
.about-roadmap p { margin-bottom: 0; font-size: .85rem; }
.about-collaborate { padding: 3rem; margin-top: 4rem; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; text-align: center; }
.about-collaborate p { max-width: 740px; margin: 1rem auto; }
.about-collaborate .actions { justify-content: center; }
@media (max-width: 1000px) {
  .about-hero { gap: 2rem; }
  .about-platform { padding: 1.5rem; }
  .about-thesis { gap: 2rem; }
}
@media (max-width: 760px) {
  .about-role-grid { grid-template-columns: 1fr; }
  .about-role-flow { margin-top: 0; }
  .about-studio-example { grid-template-columns: 1fr; gap: 1rem; }
  .about-concept-panel { padding: 1.3rem; }
  .about-concept-heading { align-items: flex-start; gap: .9rem; }
  .about-concept-number { font-size: 2.2rem; }
  .about-concept-heading h3 { font-size: 1.12rem; }
  .about-build-flow ol, .about-ninec-grid, .about-eightd-grid { grid-template-columns: 1fr; }
  .about-build-flow li:not(:last-child)::after { content: '↓'; top: auto; right: 50%; bottom: -1.4rem; }
  .about-ninec-grid li { padding: .85rem 1rem; }
  .about-hero { grid-template-columns: 1fr; padding: 1.75rem 0 2.5rem; }
  .about-hero h1 { font-size: clamp(2rem, 6.5vw, 3rem); }
  .about-platform { width: 100%; max-width: 500px; justify-self: center; }
  .about-context { grid-template-columns: 1fr 1fr; gap: 1.5rem 0; }
  .about-context p { padding: 0 1rem; }
  .about-context p:nth-child(odd) { padding-left: 0; border-left: 0; }
  .about-context strong { font-size: 1.4rem; }
  .about-section { padding: 3rem 0; }
  .about-founder, .about-thesis { grid-template-columns: 1fr; gap: 1.5rem; }
  .about-founder-name .about-founder-date { max-width: none; }
  .about-signature { font-size: 3.5rem; }
  .about-timeline { grid-template-columns: 1fr 1fr; gap: 1.5rem 0; }
  .about-focus-grid { grid-template-columns: 1fr; }
  .about-roadmap { grid-template-columns: 1fr 1fr; gap: 2rem 1.25rem; }
  .about-collaborate { padding: 2rem 1.25rem; margin-top: 3rem; }
}
@media (max-width: 380px) {
  .about-roadmap { grid-template-columns: 1fr; }
  .about-context p { padding-right: .5rem; }
  .about-context span { font-size: .75rem; }
  .about-hero .actions .btn, .about-collaborate .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html:has(.about-page), .about-page { scroll-behavior: auto; }
  .about-page *, .about-page *::before, .about-page *::after { animation: none !important; transition: none !important; }
}