:root {
  --about-ink: #071a33;
  --about-blue: #0872cf;
  --about-deep: #062444;
  --about-sky: #dff2ff;
  --about-mist: #f4f8fc;
  --about-paper: #fffefd;
  --about-line: rgba(7, 26, 51, .12);
  --about-muted: #5d6d7f;
  --about-coral: #f47f68;
}

html { scroll-behavior: smooth; }
body.about-page { background: var(--about-mist); color: var(--about-ink); }
.about-page main { overflow: hidden; padding-top: 76px; }
.about-page .site-footer { position: relative; inset: auto; z-index: 1; }
.about-breadcrumb { display: flex; gap: 10px; align-items: center; padding-top: 28px; padding-bottom: 18px; color: #748397; font-size: 14px; }
.about-breadcrumb a { color: inherit; text-decoration: none; }
.about-breadcrumb a:hover { color: var(--about-blue); }
.about-kicker { color: var(--about-coral); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }

.about-hero { display: grid; grid-template-columns: minmax(0, .92fr) minmax(480px, 1.08fr); min-height: 610px; border: 1px solid var(--about-line); border-radius: 32px; overflow: hidden; background: var(--about-paper); box-shadow: 0 25px 80px rgba(7,26,51,.08); }
.about-hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(52px, 6vw, 94px); }
.about-hero-copy h1 { margin: 25px 0 24px; color: var(--about-ink); background: none; background-clip: border-box; font-size: clamp(43px, 4.8vw, 70px); font-weight: 580; line-height: 1.1; letter-spacing: -.055em; -webkit-text-fill-color: currentColor; }
.about-hero-copy > p { max-width: 650px; margin: 0; color: var(--about-muted); font-size: 18px; line-height: 1.85; }
.about-actions { display: flex; align-items: center; gap: 26px; margin-top: 42px; }
.about-actions > a:not(.btn) { color: var(--about-blue); font-size: 14px; font-weight: 700; text-decoration: none; }
.about-signal-map { position: relative; min-height: 610px; overflow: hidden; background: radial-gradient(circle at 50% 50%, #fff 0 15%, transparent 43%), linear-gradient(150deg, #eaf7ff 0%, #f7fbff 48%, #fff6f1 100%); isolation: isolate; }
.signal-grid { position: absolute; inset: 0; z-index: -1; opacity: .55; background-image: linear-gradient(rgba(8,114,207,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(8,114,207,.08) 1px, transparent 1px); background-size: 48px 48px; mask-image: radial-gradient(circle at center, #000 18%, transparent 72%); }
.about-signal-map::before,
.about-signal-map::after { content: ""; position: absolute; left: 50%; top: 50%; width: 440px; height: 440px; border: 1px solid rgba(8,114,207,.14); border-radius: 50%; transform: translate(-50%,-50%); }
.about-signal-map::after { width: 290px; height: 290px; border-color: rgba(8,114,207,.2); }
.about-signal-map svg { position: absolute; inset: 0; width: 100%; height: 100%; fill: none; stroke: rgba(8,114,207,.25); stroke-width: 1.3; stroke-dasharray: 5 7; }
.signal-center { position: absolute; left: 50%; top: 50%; z-index: 2; display: flex; width: 190px; aspect-ratio: 1; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(8,114,207,.2); border-radius: 50%; background: rgba(255,255,255,.88); box-shadow: 0 30px 70px rgba(8,74,133,.16); transform: translate(-50%,-50%); backdrop-filter: blur(16px); }
.signal-center img { width: 72px; height: 72px; object-fit: contain; }
.signal-center b { margin-top: 11px; font-size: 18px; }
.signal-center span { margin-top: 4px; color: #7b8999; font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.signal-node { position: absolute; z-index: 2; width: 138px; padding: 17px 19px; border: 1px solid rgba(7,26,51,.1); border-radius: 17px; background: rgba(255,255,255,.88); box-shadow: 0 16px 40px rgba(7,26,51,.08); backdrop-filter: blur(12px); }
.signal-node small { display: block; color: var(--about-coral); font-size: 10px; font-weight: 800; }
.signal-node b { display: block; margin: 9px 0 4px; font-size: 18px; }
.signal-node span { color: var(--about-muted); font-size: 12px; }
.node-product { left: 6%; top: 11%; }
.node-market { right: 6%; top: 11%; }
.node-company { left: 6%; bottom: 11%; }
.node-opportunity { right: 6%; bottom: 11%; }

.about-definition { margin-top: 24px; padding: 92px 0; background: var(--about-deep); color: #fff; }
.about-definition > .shell { display: grid; grid-template-columns: 170px minmax(0, 1fr) 290px; gap: clamp(36px, 7vw, 110px); align-items: start; }
.about-definition h2 { max-width: 790px; margin: 0 0 28px; color: #fff; background: none; background-clip: border-box; font-size: clamp(36px, 4.2vw, 60px); font-weight: 560; line-height: 1.16; letter-spacing: -.05em; -webkit-text-fill-color: currentColor; }
.about-definition p { max-width: 780px; margin: 0; color: rgba(255,255,255,.68); font-size: 16px; line-height: 1.9; }
.about-definition aside { padding: 25px 0 0; border-top: 1px solid rgba(255,255,255,.18); }
.about-definition aside > span { color: rgba(255,255,255,.55); font-size: 11px; letter-spacing: .12em; }
.about-definition ol { list-style: none; margin: 22px 0 0; padding: 0; counter-reset: route; }
.about-definition li { display: flex; align-items: center; gap: 15px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 14px; }
.about-definition li::before { counter-increment: route; content: "0" counter(route); color: #76c7ff; font-size: 10px; font-weight: 800; }

.about-capabilities { padding-top: 118px; padding-bottom: 118px; }
.about-section-head { display: grid; grid-template-columns: .55fr 1.45fr; gap: clamp(45px, 9vw, 140px); align-items: start; margin-bottom: 54px; }
.about-section-head h2 { margin: 0 0 22px; color: var(--about-ink); background: none; background-clip: border-box; font-size: clamp(38px, 4.5vw, 62px); font-weight: 560; line-height: 1.12; letter-spacing: -.05em; -webkit-text-fill-color: currentColor; }
.about-section-head p { max-width: 700px; margin: 0; color: var(--about-muted); line-height: 1.85; }
.capability-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 15px; }
.capability-grid > a { position: relative; display: flex; min-height: 410px; flex-direction: column; padding: clamp(30px, 4vw, 50px); overflow: hidden; border: 1px solid var(--about-line); border-radius: 25px; background: var(--about-paper); color: var(--about-ink); text-decoration: none; transition: transform .25s ease, box-shadow .25s ease; }
.capability-grid > a::before { content: ""; position: absolute; right: -80px; top: -80px; width: 220px; height: 220px; border: 1px solid rgba(8,114,207,.12); border-radius: 50%; box-shadow: 0 0 0 35px rgba(8,114,207,.025), 0 0 0 70px rgba(8,114,207,.018); }
.capability-grid > a:hover { transform: translateY(-4px); box-shadow: 0 22px 55px rgba(7,26,51,.08); }
.capability-grid > a > span { color: var(--about-coral); font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.capability-grid h3 { margin: 50px 0 16px; font-size: 38px; font-weight: 560; letter-spacing: -.04em; }
.capability-grid p { max-width: 560px; margin: 0; color: var(--about-muted); line-height: 1.75; }
.capability-grid dl { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 34px 0 0; padding-top: 22px; border-top: 1px solid var(--about-line); }
.capability-grid dl div { display: grid; gap: 5px; }
.capability-grid dt { color: #8390a0; font-size: 11px; }
.capability-grid dd { margin: 0; font-size: 13px; }
.capability-grid em { margin-top: auto; padding-top: 30px; color: var(--about-blue); font-size: 13px; font-style: normal; font-weight: 700; }
.capability-grid > a:nth-child(2) { background: linear-gradient(145deg, #edf8ff, #fff); }
.capability-grid > a:nth-child(3) { background: linear-gradient(145deg, #fff8f4, #fff); }
.capability-grid > a:nth-child(4) { color: #fff; border-color: #0d4a80; background: linear-gradient(145deg, #082746, #0a528e); }
.capability-grid > a:nth-child(4) p,
.capability-grid > a:nth-child(4) dt { color: rgba(255,255,255,.65); }
.capability-grid > a:nth-child(4) dl { border-color: rgba(255,255,255,.14); }
.capability-grid > a:nth-child(4) em { color: #8bd2ff; }

.about-stack { padding: 110px 0; background: #e7f4ff; }
.about-stack header { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: end; margin-bottom: 48px; }
.about-stack h2 { margin: 18px 0 0; color: var(--about-ink); background: none; background-clip: border-box; font-size: clamp(38px, 4.6vw, 64px); font-weight: 560; line-height: 1.12; letter-spacing: -.05em; -webkit-text-fill-color: currentColor; }
.about-stack header > p { margin: 0; color: var(--about-muted); line-height: 1.8; }
.stack-workspace { display: grid; grid-template-columns: .72fr 1.28fr; overflow: hidden; border: 1px solid rgba(7,26,51,.15); border-radius: 28px; background: #fff; box-shadow: 0 25px 70px rgba(7,26,51,.08); }
.stack-rail { display: flex; min-height: 560px; flex-direction: column; justify-content: flex-end; padding: clamp(34px, 5vw, 65px); background: linear-gradient(150deg, #062444, #0872cf); color: #fff; }
.stack-rail > span { margin-bottom: auto; color: #ffad9d; font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.stack-rail b { max-width: 440px; font-size: clamp(30px, 3vw, 46px); line-height: 1.25; letter-spacing: -.04em; }
.stack-rail p { max-width: 430px; margin: 22px 0 0; color: rgba(255,255,255,.67); line-height: 1.75; }
.stack-workspace ol { list-style: none; margin: 0; padding: 30px 45px; }
.stack-workspace li { display: grid; grid-template-columns: 45px 1fr 90px; gap: 20px; align-items: center; padding: 27px 0; border-bottom: 1px solid var(--about-line); }
.stack-workspace li:last-child { border-bottom: 0; }
.stack-workspace li i { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 50%; background: #edf7ff; color: var(--about-blue); font-size: 11px; font-style: normal; font-weight: 800; }
.stack-workspace li b { display: block; margin-bottom: 7px; font-size: 16px; }
.stack-workspace li span { color: var(--about-muted); font-size: 13px; line-height: 1.55; }
.stack-workspace li em { color: #7a8898; font-size: 11px; font-style: normal; text-align: right; }
.stack-disclaimer { margin: 18px 0 0; color: #718093; font-size: 12px; line-height: 1.65; }

.about-principles { padding-top: 118px; padding-bottom: 118px; }
.principle-list { border-top: 1px solid var(--about-line); }
.principle-list article { display: grid; grid-template-columns: 80px 300px 1fr; gap: 30px; padding: 31px 0; border-bottom: 1px solid var(--about-line); }
.principle-list span { color: var(--about-coral); font-size: 11px; font-weight: 800; }
.principle-list h3 { margin: 0; font-size: 21px; }
.principle-list p { max-width: 700px; margin: 0; color: var(--about-muted); line-height: 1.75; }

.about-coverage { padding: 110px 0; background: var(--about-paper); }
.about-coverage .about-section-head { margin-bottom: 42px; }
.coverage-table-wrap { overflow-x: auto; border: 1px solid var(--about-line); border-radius: 24px; background: #fff; box-shadow: 0 22px 60px rgba(7,26,51,.06); }
.coverage-table { width: 100%; min-width: 0; table-layout: fixed; border-collapse: collapse; text-align: left; }
.coverage-table th,
.coverage-table td { padding: 22px 24px; border-bottom: 1px solid var(--about-line); vertical-align: top; overflow-wrap: anywhere; white-space: normal; font-size: 14px; line-height: 1.72; }
.coverage-table thead th { background: #eef8ff; color: #486178; font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.coverage-table tbody th { width: 19%; color: var(--about-ink); font-size: 15px; }
.coverage-table tbody td { color: var(--about-muted); }
.coverage-table tbody tr:last-child th,
.coverage-table tbody tr:last-child td { border-bottom: 0; }
.coverage-table tbody tr:hover { background: #f8fbfe; }
.coverage-notes { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin-top: 18px; }
.coverage-notes p { margin: 0; padding: 20px 22px; border: 1px solid var(--about-line); border-radius: 17px; background: #f7fafc; color: var(--about-muted); font-size: 13px; line-height: 1.7; }
.coverage-notes b { display: block; margin-bottom: 6px; color: var(--about-ink); }

.about-service { padding: 110px 0; background: linear-gradient(145deg, #fff7f2, #fff 50%, #e9f7ff); }
.about-service > .shell { display: grid; grid-template-columns: 1fr .82fr; gap: clamp(50px, 10vw, 150px); align-items: center; }
.about-service h2 { margin: 20px 0 26px; color: var(--about-ink); background: none; background-clip: border-box; font-size: clamp(40px, 4.7vw, 65px); font-weight: 560; line-height: 1.12; letter-spacing: -.05em; -webkit-text-fill-color: currentColor; }
.about-service p { max-width: 700px; margin: 0 0 34px; color: var(--about-muted); line-height: 1.85; }
.about-service aside { padding: 34px; border: 1px solid var(--about-line); border-radius: 23px; background: rgba(255,255,255,.82); box-shadow: 0 20px 50px rgba(7,26,51,.06); }
.about-service aside > span { color: #778698; font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.about-service ul { list-style: none; margin: 24px 0 0; padding: 0; }
.about-service li { display: grid; grid-template-columns: 80px 1fr; gap: 20px; padding: 16px 0; border-top: 1px solid var(--about-line); }
.about-service li b { font-size: 14px; }
.about-service li small { color: var(--about-muted); font-size: 13px; }

.about-faq { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(55px, 10vw, 150px); padding-top: 118px; padding-bottom: 118px; }
.about-faq h2 { margin: 20px 0 0; color: var(--about-ink); background: none; background-clip: border-box; font-size: clamp(36px, 4vw, 56px); font-weight: 560; line-height: 1.17; letter-spacing: -.045em; -webkit-text-fill-color: currentColor; }
.about-faq details { border-top: 1px solid var(--about-line); }
.about-faq details:last-child { border-bottom: 1px solid var(--about-line); }
.about-faq summary { position: relative; padding: 26px 46px 26px 0; cursor: pointer; list-style: none; font-size: 18px; font-weight: 650; }
.about-faq summary::-webkit-details-marker { display: none; }
.about-faq summary::after { content: "+"; position: absolute; right: 8px; top: 23px; color: var(--about-blue); font-size: 23px; font-weight: 400; }
.about-faq details[open] summary::after { content: "−"; }
.about-faq details p { max-width: 780px; margin: 0; padding: 0 40px 28px 0; color: var(--about-muted); line-height: 1.85; }

@media (min-width: 961px) {
  .about-page #primary-nav { display: flex; gap: clamp(10px, 1.5vw, 24px); }
}

@media (max-width: 1050px) {
  .about-hero { grid-template-columns: 1fr; }
  .about-signal-map { min-height: 560px; }
  .about-definition > .shell { grid-template-columns: 130px 1fr; }
  .about-definition aside { grid-column: 2; }
  .about-section-head { grid-template-columns: 1fr 2fr; gap: 45px; }
  .about-stack header { grid-template-columns: 1fr; gap: 24px; }
  .stack-workspace { grid-template-columns: 1fr; }
  .stack-rail { min-height: 380px; }
  .about-service > .shell { grid-template-columns: 1fr; }
  .coverage-notes { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .about-breadcrumb { padding-top: 18px; }
  .about-hero { min-height: 0; border-radius: 22px; }
  .about-hero-copy { padding: 45px 25px; }
  .about-hero-copy h1 { font-size: 40px; }
  .about-hero-copy > p { font-size: 16px; }
  .about-actions { align-items: stretch; flex-direction: column; gap: 20px; }
  .about-actions .btn { width: 100%; }
  .coverage-table { min-width: 760px; }
  .about-signal-map { min-height: 500px; }
  .about-signal-map::before { width: 330px; height: 330px; }
  .about-signal-map::after { width: 220px; height: 220px; }
  .signal-center { width: 145px; }
  .signal-center img { width: 55px; height: 55px; }
  .signal-node { width: 112px; padding: 13px 14px; }
  .signal-node b { font-size: 15px; }
  .node-product,.node-company { left: 4%; }
  .node-market,.node-opportunity { right: 4%; }
  .about-definition { padding: 75px 0; }
  .about-definition > .shell { grid-template-columns: 1fr; gap: 34px; }
  .about-definition aside { grid-column: auto; }
  .about-capabilities,
  .about-principles,
  .about-coverage,
  .about-faq { padding-top: 78px; padding-bottom: 78px; }
  .about-section-head { grid-template-columns: 1fr; gap: 22px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid > a { min-height: 360px; padding: 28px; }
  .capability-grid h3 { margin-top: 44px; font-size: 32px; }
  .about-stack { padding: 78px 0; }
  .stack-workspace { border-radius: 22px; }
  .stack-rail { min-height: 330px; padding: 30px 25px; }
  .stack-workspace ol { padding: 14px 24px; }
  .stack-workspace li { grid-template-columns: 38px 1fr; gap: 14px; }
  .stack-workspace li em { grid-column: 2; text-align: left; }
  .principle-list article { grid-template-columns: 38px 1fr; gap: 14px; }
  .principle-list p { grid-column: 2; }
  .about-service { padding: 78px 0; }
  .about-service aside { padding: 27px 23px; }
  .about-faq { grid-template-columns: 1fr; gap: 38px; }
  .about-faq summary { font-size: 16px; line-height: 1.55; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* About V3: brand credibility, evidence and decision-making in one visual system. */
.about-page main { background:
  radial-gradient(circle at 86% 8%, rgba(78,170,226,.085), transparent 22%),
  linear-gradient(180deg,#f6faff 0,#f4f8fc 14%,#fff 14.01%,#fff 28%,#f4f8fc 28.01%); }
.about-hero { position: relative; isolation: isolate; border-color: rgba(114,168,204,.24); box-shadow: 0 32px 95px rgba(7,50,84,.11), inset 0 1px 0 rgba(255,255,255,.95); }
.about-hero::before { content: ""; position: absolute; z-index: 4; left: clamp(52px,6vw,94px); top: 0; width: 76px; height: 4px; border-radius: 0 0 999px 999px; background: linear-gradient(90deg,var(--about-coral),#ffb19e); }
.about-hero-meta { display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #8796a7; font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.about-hero-copy h1 { text-wrap: balance; }
.about-signal-map { background:
  radial-gradient(circle at 50% 50%,rgba(255,255,255,.98) 0 14%,transparent 44%),
  radial-gradient(circle at 70% 22%,rgba(255,255,255,.72),transparent 25%),
  linear-gradient(145deg,#e5f5ff 0%,#f5fbff 48%,#fff1eb 100%); }
.about-signal-map svg path { stroke-dashoffset: 0; animation: about-signal 14s linear infinite; }
.signal-center { border-color: rgba(65,151,207,.28); background: rgba(255,255,255,.77); box-shadow: 0 34px 90px rgba(8,74,133,.19),inset 0 1px 0 #fff; }
.signal-center::after { content: ""; position: absolute; inset: -13px; border: 1px solid rgba(8,114,207,.12); border-radius: 50%; }
.signal-node { border-color: rgba(77,145,190,.2); background: rgba(255,255,255,.72); box-shadow: 0 20px 50px rgba(7,55,89,.11),inset 0 1px 0 #fff; transition: transform .25s,box-shadow .25s,background .25s; }
.signal-node:hover { transform: translateY(-5px); background: rgba(255,255,255,.92); box-shadow: 0 28px 62px rgba(7,55,89,.16); }
.about-definition { position: relative; overflow: hidden; background: radial-gradient(circle at 88% 10%,rgba(28,141,210,.22),transparent 25%),linear-gradient(135deg,#05243f,#083e66); }
.about-definition::before { content: ""; position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg,transparent,#000 42%,#000); pointer-events: none; }
.about-definition > .shell { position: relative; z-index: 1; }
.capability-grid > a { box-shadow: 0 18px 55px rgba(7,58,94,.045),inset 0 1px 0 #fff; }
.capability-grid > a::after { content: "↗"; position: absolute; right: 28px; top: 26px; display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid rgba(55,128,178,.2); border-radius: 50%; color: var(--about-blue); font-size: 13px; transition: transform .25s,background .25s,color .25s; }
.capability-grid > a:nth-child(4)::after { border-color: rgba(255,255,255,.22); color: #fff; }
.capability-grid > a:hover::after { transform: rotate(45deg); background: var(--about-blue); color: #fff; }
.about-stack { position: relative; overflow: hidden; background: linear-gradient(135deg,#e5f4ff,#f4faff 58%,#fff4ef); }
.about-stack::after { content: ""; position: absolute; right: -170px; top: 8%; width: 520px; height: 520px; border: 1px solid rgba(8,114,207,.1); border-radius: 50%; box-shadow: 0 0 0 62px rgba(8,114,207,.035),0 0 0 124px rgba(8,114,207,.02); pointer-events: none; }
.about-stack > .shell { position: relative; z-index: 1; }
.stack-workspace { border-color: rgba(69,136,181,.22); box-shadow: 0 32px 90px rgba(7,55,89,.12),inset 0 1px 0 #fff; }
.stack-rail { position: relative; overflow: hidden; background: radial-gradient(circle at 80% 20%,rgba(56,178,238,.3),transparent 28%),linear-gradient(150deg,#052543,#0872cf); }
.stack-rail::after { content: ""; position: absolute; right: -160px; bottom: -160px; width: 370px; height: 370px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 48px rgba(255,255,255,.04),0 0 0 96px rgba(255,255,255,.025); }
.stack-rail > * { position: relative; z-index: 1; }
.stack-workspace li { padding-inline: 10px; border-radius: 12px; transition: transform .2s,background .2s; }
.stack-workspace li:hover { transform: translateX(5px); background: #f4faff; }
.principle-list article { position: relative; transition: padding .2s,background .2s; }
.principle-list article:hover { padding-inline: 18px; background: rgba(255,255,255,.72); }
.coverage-table-wrap { border-color: rgba(78,143,187,.22); box-shadow: 0 28px 75px rgba(7,55,89,.09),inset 0 1px 0 #fff; }
.coverage-table thead th { background: linear-gradient(180deg,#e9f6ff,#f3faff); }
.coverage-table tbody tr { transition: background .2s; }
.coverage-table tbody tr:hover { background: #f1f9ff; }
.about-service aside { position: relative; overflow: hidden; border-color: rgba(83,151,195,.2); background: rgba(255,255,255,.74); box-shadow: 0 26px 70px rgba(7,55,89,.1),inset 0 1px 0 #fff; backdrop-filter: blur(14px); }
.about-service aside::before { content: ""; position: absolute; left: 34px; right: 34px; top: 0; height: 3px; border-radius: 0 0 999px 999px; background: linear-gradient(90deg,var(--about-coral),#ffb09e 38%,transparent 75%); }
.about-faq details { transition: background .2s,padding .2s; }
.about-faq details[open] { padding-inline: 18px; background: linear-gradient(90deg,#f2f9ff,rgba(255,255,255,.6)); }
@keyframes about-signal { to { stroke-dashoffset: -120; } }
@media (max-width:720px) {
  .about-hero::before { left: 25px; }
  .about-hero-meta { align-items: flex-start; flex-direction: column; gap: 8px; }
  .signal-node:hover,.stack-workspace li:hover { transform: none; }
  .principle-list article:hover { padding-inline: 0; }
  .about-service aside::before { left: 23px; right: 23px; }
}