/* About page. Header comes from home3.css, tokens from v2.css. Radius <= 8px, letter spacing 0. */
.about-page .top { position: relative; background: var(--paper); border-bottom: 1px solid var(--line); }
.about-page [id] { scroll-margin-top: 24px; }
.about-page button.btn { border: 0; font-family: inherit; cursor: pointer; }
.about-label { font-size: 15px; font-weight: 500; color: var(--muted); }

/* Positioning */
.about-head { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 64px; align-items: center; padding-top: 72px; padding-bottom: 96px; }
.about-head h1 { margin-top: 16px; font-size: 56px; line-height: 1.15; font-weight: 600; overflow-wrap: break-word; }
.about-lead { margin-top: 24px; font-size: 19px; line-height: 1.7; color: var(--muted); max-width: 30em; }
.about-def { margin: 40px 0 0; border-top: 1px solid var(--ink); max-width: 36em; }
.about-def div { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
.about-def dt { font-weight: 600; }
.about-def dd { margin: 0; color: var(--muted); }
.about-fig { margin: 0; min-width: 0; }
.about-fig img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: 52% 50%; background: var(--ground); }
.about-fig figcaption { margin-top: 10px; font-size: 13px; color: var(--muted); }

/* Shared section heading */
.about-sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: end; }
.about-sec-head h2 { margin-top: 12px; font-size: 44px; line-height: 1.18; font-weight: 600; }
.about-sec-head > p { font-size: 17px; color: var(--muted); max-width: 30em; }

/* Journey: three stages linking back to the home page sections */
.about-journey { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 104px 0 112px; }
.stages3 { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; }
.stage3 { min-width: 0; border-top: 2px solid var(--ink); padding-top: 20px; }
.stage3-k { display: flex; align-items: baseline; gap: 12px; font-size: 17px; font-weight: 600; }
.stage3-k b { font-family: var(--mono); font-size: 14px; font-weight: 500; color: var(--accent); }
.stage3-nodes { margin-top: 4px; font-size: 14px; color: var(--muted); }
.stage3-items { list-style: none; margin: 24px 0 0; padding: 0; }
.stage3-items li { padding: 16px 0 20px; border-top: 1px solid var(--line); }
.stage3-items h3 { font-size: 20px; line-height: 1.35; font-weight: 600; }
.stage3-items a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 44px; text-decoration: none; transition: color 160ms ease; }
.stage3-items a svg { width: 18px; height: 18px; flex: none; color: var(--muted); transition: transform 160ms ease, color 160ms ease; }
.stage3-items a:hover, .stage3-items a:hover svg { color: var(--accent); }
.stage3-items a:hover svg { transform: translateX(3px); }
.stage3-items p { font-size: 15px; line-height: 1.65; color: var(--muted); }

/* Business assurance: sample entries, visibly marked */
.about-assure { padding: 104px 0 96px; }
.assure-list { list-style: none; margin: 48px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.assure-item { position: relative; min-width: 0; padding: 24px 24px 28px; border: 1px dashed #7A848D; border-radius: 6px; background: repeating-linear-gradient(135deg, transparent 0 10px, rgba(29, 36, 42, .025) 10px 20px); }
.assure-item > svg { width: 22px; height: 22px; color: var(--muted); }
.assure-item h3 { margin-top: 16px; font-size: 19px; line-height: 1.35; font-weight: 600; }
.assure-item p { margin-top: 6px; font-size: 15px; line-height: 1.65; color: var(--muted); }
.sample-tag { position: absolute; top: 20px; right: 20px; padding: 0 8px; border: 1px solid #7A848D; border-radius: 4px; font-size: 12px; line-height: 22px; color: var(--muted); background: var(--paper); }
.text-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin-top: 24px; padding: 0; border: 0; background: none; font: inherit; font-size: 16px; font-weight: 500; color: var(--ink); text-decoration: underline; text-underline-offset: 5px; cursor: pointer; }
.text-link:hover { color: var(--accent); }
.text-link svg { width: 17px; height: 17px; }

/* Closing contact */
.about-close { background: var(--ground); }
.about-close-in { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px 64px; flex-wrap: wrap; padding-top: 96px; padding-bottom: 96px; }
.about-close h2 { font-size: 44px; line-height: 1.18; font-weight: 600; }
.about-close p { margin-top: 16px; color: var(--muted); }
.about-act { display: flex; align-items: center; gap: 20px 32px; flex-wrap: wrap; }

@media (max-width: 1099px) {
  .about-head { gap: 40px; padding-top: 56px; padding-bottom: 80px; }
  .about-head h1 { font-size: 46px; }
  .about-sec-head { gap: 40px; }
  .about-sec-head h2, .about-close h2 { font-size: 38px; }
  .stages3 { gap: 0 28px; }
  .assure-list { gap: 16px; }
}
@media (max-width: 899px) {
  .about-head { grid-template-columns: minmax(0, 1fr); padding-top: 40px; padding-bottom: 64px; }
  .about-fig img { aspect-ratio: 16 / 10; }
  .about-sec-head { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .about-journey, .about-assure { padding: 72px 0 80px; }
  .stages3 { grid-template-columns: minmax(0, 1fr); gap: 40px; margin-top: 40px; }
  .assure-list { grid-template-columns: minmax(0, 1fr); margin-top: 36px; }
  .about-close-in { padding-top: 72px; padding-bottom: 72px; }
}
@media (max-width: 479px) {
  .about-head h1 { font-size: 34px; line-height: 1.2; }
  .about-lead { font-size: 17px; }
  .about-def div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .about-sec-head h2, .about-close h2 { font-size: 30px; }
  .stage3-items h3 { font-size: 18px; }
  .assure-item { padding: 20px 20px 24px; }
  .sample-tag { top: 16px; right: 16px; }
}
@media (prefers-reduced-motion: reduce) { .stage3-items a, .stage3-items a svg { transition: none; } }