:root {
  --paper: #f4f6f2;
  --paper-2: #e8ece7;
  --ink: #17211d;
  --muted: #5e6964;
  --line: #ccd3cd;
  --line-dark: #9ca8a1;
  --green: #176a4b;
  --green-bright: #2e8f67;
  --green-soft: #dcebe2;
  --gold: #bd9862;
  --night: #17221f;
  --white: #fff;
  --shadow: 0 24px 70px rgba(28, 42, 35, .12);
  --radius: 18px;
  --shell: min(1240px, calc(100vw - 72px));
  --font: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* M12 continuum: one light/material system across Hero, task, evidence and conversion. */
.home-intro__scene { background: #879b8f; }

/* M12 correction: the film is a standalone pre-home curtain, never the Hero background. */
body.opening-pending,
body.opening-active { overflow:hidden; }
.site-opening { position:fixed; inset:0; z-index:1000; display:grid; place-items:center; overflow:hidden; background:#07100e; color:white; opacity:1; visibility:visible; transition:opacity .48s ease,visibility .48s ease; }
.site-opening.is-leaving { opacity:0; visibility:hidden; pointer-events:none; }
.site-opening__video { position:absolute; inset:0; width:100%; height:100%; object-fit:contain; object-position:center; background:#07100e; opacity:0; transition:opacity .34s ease; }
.site-opening.is-ready .site-opening__video { opacity:1; }
.site-opening__veil { position:absolute; inset:0; pointer-events:none; background:linear-gradient(180deg,rgba(4,11,9,.18),transparent 28%,transparent 72%,rgba(4,11,9,.56)); }
.site-opening__brand { position:absolute; z-index:2; left:clamp(20px,4vw,64px); top:clamp(20px,4vw,52px); font-size:15px; font-weight:800; letter-spacing:-.02em; }
.site-opening__brand span { margin-left:5px; color:#b9d66a; }
.site-opening__skip { position:absolute; z-index:3; top:clamp(18px,4vw,44px); right:clamp(18px,4vw,52px); min-width:72px; min-height:44px; padding:0 18px; border:1px solid rgba(255,255,255,.38); border-radius:999px; color:white; background:rgba(7,16,14,.55); backdrop-filter:blur(12px); cursor:pointer; }
.site-opening__skip:hover,
.site-opening__skip:focus-visible { border-color:white; background:rgba(7,16,14,.82); outline:3px solid rgba(185,214,106,.42); outline-offset:3px; }
.site-opening__status { position:absolute; z-index:2; left:clamp(20px,4vw,64px); bottom:clamp(20px,4vw,44px); margin:0; color:rgba(255,255,255,.62); font-size:12px; letter-spacing:.08em; }

.home-entry-stage,
.home-path-stage,
.home-evidence-stage,
.home-closing-stage,
.example-flow,
.editorial-hero + .section-pad,
.about-intro + .section-pad,
.about-intro + .section-pad + .section-pad { position: relative; isolation: isolate; overflow: hidden; }

.home-entry-stage { color: white; background: #12211d; }
.home-entry-stage::before { content:""; position:absolute; inset:0; z-index:-2; background:url('./assets/aios-center-rebuild-20260713/solutions-hero-knowledge-room-v1-desktop.webp') center/cover no-repeat; opacity:.34; filter:saturate(.72); }
.home-entry-stage::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,rgba(9,24,21,.96),rgba(12,29,25,.78) 52%,rgba(12,29,25,.52)); }
.home-entry-stage .section-intro p { color:rgba(255,255,255,.7); }
.home-entry-stage .kicker { color:#c4dc78; }
.home-entry-stage .entry-grid { gap:1px; border:1px solid rgba(255,255,255,.18); border-radius:20px; overflow:hidden; background:rgba(255,255,255,.16); }
.home-entry-stage .entry-card { position:relative; min-height:330px; padding:28px; border:0; border-radius:0; overflow:hidden; color:white; background-position:center; background-size:cover; }
.home-entry-stage .entry-card::before { content:""; position:absolute; inset:0; background:linear-gradient(0deg,rgba(8,21,18,.96),rgba(8,21,18,.2) 72%); transition:background .25s ease; }
.home-entry-stage .entry-card:nth-child(1) { background-image:url('./assets/aios-center-rebuild-20260713/ai-os-hero-continuous-path-v1-desktop.webp'); }
.home-entry-stage .entry-card:nth-child(2) { background-image:url('./assets/aios-center-rebuild-20260713/solutions-hero-knowledge-room-v1-desktop.webp'); }
.home-entry-stage .entry-card:nth-child(3) { background-image:url('./assets/aios-direction-recovery-20260714/ai-twin-city-office-hero-v1.png'); }
.home-entry-stage .entry-card:nth-child(4) { background-image:url('./assets/aios-center-rebuild-20260713/contact-hero-reception-collaboration-v1-desktop.webp'); }
.home-entry-stage .entry-card > * { position:relative; z-index:1; }
.home-entry-stage .entry-card div { margin-top:auto; }
.home-entry-stage .entry-card p { color:rgba(255,255,255,.72); }
.home-entry-stage .entry-card .text-link { color:#d5e79d; }
.home-entry-stage .entry-card:hover::before { background:linear-gradient(0deg,rgba(8,21,18,.96),rgba(8,21,18,.08) 78%); }

.home-path-stage { min-height:760px; color:white; background:#10201c; }
.home-path-stage::before { content:""; position:absolute; inset:0; z-index:-2; background:url('./assets/aios-center-rebuild-20260713/resource-method-toolbook-v1-desktop.webp') 72% center/cover no-repeat; opacity:.62; }
.home-path-stage::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,rgba(8,22,19,.96) 0%,rgba(8,22,19,.78) 48%,rgba(8,22,19,.42)); }
.home-path-stage .mini-system { align-items:center; }
.home-path-stage .mini-system__aside p { color:rgba(255,255,255,.7); }
.home-path-stage .kicker { color:#c4dc78; }
.home-path-stage .text-link { color:#d6e9a0; }
.home-path-stage .work-path { border:1px solid rgba(255,255,255,.18); border-radius:18px; overflow:hidden; background:rgba(12,28,24,.62); backdrop-filter:blur(14px); }
.home-path-stage .work-step { border-bottom-color:rgba(255,255,255,.14); background:transparent; }
.home-path-stage .work-step h3 { color:white; }
.home-path-stage .work-step p,
.home-path-stage .work-step b { color:rgba(255,255,255,.62); }

.home-evidence-stage { background:linear-gradient(135deg,#dce5df 0%,#f3f0e7 52%,#b8c8bd 100%); }
.home-evidence-stage .architecture-feature { align-items:stretch; border-radius:22px; overflow:hidden; background:rgba(249,249,244,.78); box-shadow:0 30px 80px rgba(31,55,47,.15); }
.home-evidence-stage .architecture-feature figure { margin:0; min-height:520px; }
.home-evidence-stage .architecture-feature figure img { height:100%; object-fit:cover; border-radius:0; }
.home-evidence-stage .architecture-feature__copy { align-self:center; padding:48px; }
.closing-band.home-closing-stage { color:white; background:linear-gradient(90deg,rgba(10,24,21,.91),rgba(10,24,21,.58)),url('./assets/aios-center-rebuild-20260713/insights-hero-research-desk-v1-desktop.webp') center 58%/cover no-repeat; }
.closing-band.home-closing-stage p { color:rgba(255,255,255,.72); }
.closing-band.home-closing-stage .button-secondary { color:white; border-color:rgba(255,255,255,.38); background:rgba(255,255,255,.06); }

.example-flow { color:white; background:#10211d; }
.example-flow::before { content:""; position:absolute; inset:0; z-index:-2; background:url('./references/user-supplied-aios-center-20260713/originals/04-project-archive-verification-scene.png') center/cover no-repeat; opacity:.42; }
.example-flow::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,rgba(9,23,20,.95),rgba(9,23,20,.68)); }
.example-flow .task-flow { border:1px solid rgba(255,255,255,.16); border-radius:18px; overflow:hidden; background:rgba(10,27,23,.68); backdrop-filter:blur(12px); }
.example-flow .task-flow article { border-color:rgba(255,255,255,.14); background:transparent; }
.example-flow .task-flow p { color:rgba(255,255,255,.65); }
.route-aios main > .section-pad:nth-of-type(3) { background:linear-gradient(135deg,#e0e7e1,#f5f0e5); }
.route-aios main > .section-pad:nth-of-type(3) .architecture-feature { padding:24px; border-radius:22px; background:rgba(255,255,255,.72); box-shadow:0 30px 70px rgba(35,58,50,.13); }

.route-solutions .closing-band { color:white; background:linear-gradient(90deg,rgba(9,23,20,.91),rgba(9,23,20,.58)),url('./references/user-supplied-aios-center-20260713/originals/05-research-material-organization-scene.png') center/cover no-repeat; }
.route-solutions .closing-band p { color:rgba(255,255,255,.7); }
.route-solutions .closing-band .button-secondary { color:white; border-color:rgba(255,255,255,.38); background:rgba(255,255,255,.08); }

.editorial-hero + .section-pad { padding-top:86px !important; color:white; background:#10211d; }
.editorial-hero + .section-pad::before { content:""; position:absolute; inset:0; z-index:-2; background:url('./assets/aios-center-rebuild-20260713/insight-article-editorial-still-v1-desktop.webp') center/cover no-repeat; opacity:.28; }
.editorial-hero + .section-pad::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,rgba(9,23,20,.96),rgba(9,23,20,.72)); }
.editorial-hero + .section-pad .section-intro p,
.editorial-hero + .section-pad .article-card p { color:rgba(255,255,255,.68); }
.editorial-hero + .section-pad .article-list { gap:1px; border:1px solid rgba(255,255,255,.16); border-radius:18px; overflow:hidden; background:rgba(255,255,255,.16); }
.editorial-hero + .section-pad .article-card { border:0; border-radius:0; background:rgba(12,28,24,.7); backdrop-filter:blur(12px); }
.editorial-hero + .section-pad .text-link { color:#d2e69a; }

.about-intro + .section-pad { background:linear-gradient(120deg,#172722 0%,#29382f 44%,#7b342d 100%); color:white; }
.about-intro + .section-pad .lead { color:rgba(255,255,255,.72); }
.about-intro + .section-pad .principle-list li { border-color:rgba(255,255,255,.16); }
.about-intro + .section-pad + .section-pad { background:linear-gradient(135deg,#dfe7e1,#f5f0e5); }
.about-intro + .section-pad + .section-pad .architecture-feature { padding:24px; border-radius:22px; background:rgba(255,255,255,.75); box-shadow:0 28px 70px rgba(35,58,50,.13); }

.legal-page::before,
.not-found::before { content:""; display:block; width:100%; height:180px; margin-bottom:42px; border-radius:22px; background:linear-gradient(90deg,rgba(11,27,23,.64),rgba(11,27,23,.18)),url('./assets/aios-center-rebuild-20260713/insights-hero-research-desk-v1-desktop.webp') center/cover no-repeat; }

@media (max-width: 760px) {
  .site-opening__video { object-fit:contain; }
  .site-opening__brand { font-size:14px; }
  .site-opening__status { max-width:190px; }
  .home-entry-stage,
  .home-path-stage,
  .home-evidence-stage { padding:70px 0; }
  .home-entry-stage .entry-grid { display:grid; grid-template-columns:1fr 1fr; }
  .home-entry-stage .entry-card { min-height:260px; padding:18px; }
  .home-entry-stage .entry-card h3 { font-size:20px; }
  .home-entry-stage .entry-card p { font-size:14px; }
  .home-path-stage::before { background-position:66% center; }
  .home-path-stage .mini-system { display:grid; gap:30px; }
  .home-path-stage .work-step { grid-template-columns:54px 1fr; }
  .home-path-stage .work-step b { grid-column:2; }
  .home-evidence-stage .architecture-feature { display:flex; flex-direction:column; }
  .home-evidence-stage .architecture-feature figure { min-height:310px; }
  .home-evidence-stage .architecture-feature__copy { padding:28px 22px; }
  .example-flow::before { background-position:64% center; }
  .example-flow .task-flow { display:grid; grid-template-columns:1fr 1fr; }
  .example-flow .task-flow article { min-height:220px; padding:20px; }
  .route-aios main > .section-pad:nth-of-type(3) .architecture-feature,
  .about-intro + .section-pad + .section-pad .architecture-feature { padding:0; overflow:hidden; }
  .editorial-hero + .section-pad { padding-top:70px !important; }
  .editorial-hero + .section-pad .article-list { display:block; }
  .editorial-hero + .section-pad .article-card { min-height:220px; padding:28px 22px; border-bottom:1px solid rgba(255,255,255,.14); }
  .legal-page::before,
  .not-found::before { height:128px; margin-bottom:28px; border-radius:16px; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--font); line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 3px solid rgba(46, 143, 103, .42); outline-offset: 3px; }
[hidden] { display: none !important; }

.skip-link { position: fixed; z-index: 100; left: 16px; top: -80px; padding: 10px 14px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }
.site-header { height: 76px; width: var(--shell); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; border-bottom: 1px solid rgba(23, 33, 29, .14); }
.site-brand { font-size: 17px; font-weight: 760; letter-spacing: -.02em; white-space: nowrap; }
.site-brand span { color: var(--green); font-weight: 650; margin-left: 5px; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: clamp(20px, 2.4vw, 38px); margin-left: auto; }
.site-nav a { position: relative; color: #47534d; font-size: 14px; white-space: nowrap; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 2px; background: var(--green); transition: right .18s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { right: 0; }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 650; }
.site-actions { display: flex; align-items: center; gap: 12px; }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 18px; border-radius: 999px; background: var(--ink); color: white; font-size: 14px; font-weight: 650; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: transparent; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.menu-toggle span { width: 18px; height: 1px; background: currentColor; }
.mobile-nav { display: none; }

.section-shell { width: var(--shell); margin: 0 auto; }
.section-pad { padding: clamp(76px, 8vw, 128px) 0; }
.compact-pad { padding: 56px 0; }
.kicker { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--green); font-size: 12px; font-weight: 760; letter-spacing: .12em; text-transform: uppercase; }
.kicker::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.display { margin: 0; font-size: clamp(44px, 4.3vw, 62px); line-height: 1.08; letter-spacing: -.055em; font-weight: 660; }
.page-title { margin: 0; font-size: clamp(42px, 4vw, 58px); line-height: 1.1; letter-spacing: -.05em; font-weight: 660; }
.lead { max-width: 660px; margin: 24px 0 0; color: var(--muted); font-size: clamp(17px, 1.45vw, 21px); line-height: 1.75; }
h2 { margin: 0; font-size: clamp(32px, 3.1vw, 46px); line-height: 1.18; letter-spacing: -.045em; font-weight: 650; }
h3 { margin: 0; line-height: 1.28; letter-spacing: -.02em; }
p { margin-top: 0; }
.section-intro { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .7fr); gap: 60px; align-items: end; margin-bottom: 52px; }
.section-intro p { margin: 0; color: var(--muted); max-width: 540px; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button-primary, .button-secondary, .button-quiet { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 0 22px; border-radius: 999px; font-size: 15px; font-weight: 700; border: 1px solid transparent; cursor: pointer; transition: transform .18s ease, background .18s ease, color .18s ease; }
.button-primary { background: var(--green); color: white; box-shadow: 0 12px 28px rgba(23, 106, 75, .2); }
.button-primary:hover { background: #125b40; transform: translateY(-1px); }
.button-secondary { border-color: var(--line-dark); background: rgba(255,255,255,.5); }
.button-secondary:hover { background: white; transform: translateY(-1px); }
.button-quiet { min-height: 42px; padding: 0 14px; border-color: var(--line); background: transparent; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-weight: 720; }
.text-link::after { content: "→"; transition: transform .18s ease; }
.text-link:hover::after { transform: translateX(4px); }
.caption { margin: 10px 0 0; color: #5f6a64; font-size: 13px; line-height: 1.5; }
.trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.36); }
.trust-strip .section-shell { min-height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #68736d; font-size: 12px; }

/* Home: editorial split, never reused on product pages */
.home-intro { width: var(--shell); margin: 28px auto 0; display: grid; grid-template-columns: minmax(420px, .82fr) minmax(520px, 1.18fr); min-height: min(700px, calc(100vh - 104px)); gap: 38px; align-items: stretch; }
.home-intro__scene picture, .home-intro__scene img { display: block; width: 100%; height: 100%; }
.home-intro__copy { padding: clamp(46px, 6vw, 88px) 0 66px; display: flex; flex-direction: column; justify-content: center; }
.home-intro__copy .lead { max-width: 580px; }
.home-intro__meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); }
.home-intro__meta span { color: var(--muted); font-size: 12px; }
.home-intro__meta strong { display: block; margin-top: 5px; font-size: 14px; font-weight: 700; }
.home-intro__media { min-height: 560px; overflow: hidden; border-radius: 2px 2px 26px 26px; background: #cad5d2; box-shadow: var(--shadow); }
.home-intro__media picture, .home-intro__media img { width: 100%; height: 100%; }
.home-intro__media img { object-fit: cover; object-position: 58% center; }
.entry-grid { display: grid; grid-template-columns: 1.25fr .9fr .9fr; grid-template-rows: repeat(2, minmax(170px, auto)); gap: 16px; }
.entry-card { position: relative; display: flex; flex-direction: column; justify-content: space-between; min-height: 170px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.54); overflow: hidden; }
.entry-card:first-child { grid-row: 1 / 3; background: var(--night); color: white; }
.entry-card:first-child p { color: #bac6c0; }
.entry-card h3 { font-size: 24px; }
.entry-card p { margin: 10px 0 22px; color: var(--muted); }
.entry-card .entry-no { color: var(--green-bright); font-size: 11px; letter-spacing: .12em; }
.mini-system { display: grid; grid-template-columns: .8fr 1.4fr; gap: 40px; align-items: start; }
.mini-system__aside { position: sticky; top: 24px; }
.mini-system__aside p { margin: 22px 0; color: var(--muted); }
.work-path { padding: 14px 28px; background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); }
.work-step { display: grid; grid-template-columns: 96px 1fr auto; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); align-items: center; }
.work-step:last-child { border: 0; }
.work-step span { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.work-step h3 { font-size: 20px; }
.work-step p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }
.work-step b { color: #64716a; font-size: 12px; font-weight: 650; }

/* AI OS: product system first */
.product-intro { width: var(--shell); margin: 0 auto; padding: clamp(70px, 8vw, 116px) 0 68px; display: grid; grid-template-columns: minmax(360px, .74fr) minmax(560px, 1.26fr); gap: 70px; align-items: center; }
.aios-film__media picture, .aios-film__media img { display: block; width: 100%; height: 100%; }
.system-map { padding: 18px; border: 1px solid var(--line); border-radius: 24px; background: #edf1ed; box-shadow: var(--shadow); }
.system-layer { display: grid; grid-template-columns: 46px 160px 1fr; gap: 16px; align-items: center; min-height: 92px; padding: 16px; border-radius: 15px; background: white; border: 1px solid #d4dad5; margin-bottom: 10px; }
.system-layer:last-child { margin-bottom: 0; }
.system-layer i { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--green-soft); color: var(--green); font-style: normal; font-size: 12px; font-weight: 800; }
.system-layer strong { font-size: 16px; }
.system-layer span { color: var(--muted); font-size: 13px; }
.example-flow { background: var(--night); color: white; }
.example-flow .section-intro p { color: #b8c4be; }
.task-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.15); border-radius: 20px; overflow: hidden; }
.task-flow article { min-height: 230px; padding: 28px; background: #1a2924; }
.task-flow span { color: #78bf9d; font-size: 12px; letter-spacing: .12em; }
.task-flow h3 { margin-top: 32px; font-size: 21px; }
.task-flow p { margin: 12px 0 0; color: #b9c4bf; font-size: 14px; }
.architecture-feature { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.architecture-feature figure { margin: 0; }
.architecture-feature img { aspect-ratio: 16/10; object-fit: cover; border-radius: 20px; }
.architecture-feature__copy p { margin: 22px 0 0; color: var(--muted); }
.principle-list { margin: 30px 0 0; padding: 0; list-style: none; }
.principle-list li { display: grid; grid-template-columns: 24px 1fr; gap: 14px; padding: 14px 0; border-top: 1px solid var(--line); }
.principle-list i { color: var(--green); font-style: normal; font-weight: 800; }

/* Solutions: workspace */
.solutions-heading { width: var(--shell); margin: 0 auto; padding: 64px 0 38px; display: grid; grid-template-columns: 1fr .72fr; gap: 70px; align-items: end; }
.solutions-heading .lead { margin: 0; }
.solution-workspace { width: var(--shell); margin: 0 auto 100px; display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: 620px; border: 1px solid var(--line); border-radius: 24px; background: #fff; overflow: hidden; box-shadow: var(--shadow); }
.solution-tabs { padding: 18px; background: #e7ece7; border-right: 1px solid var(--line); }
.solution-tabs button { width: 100%; padding: 16px 14px; border: 0; border-radius: 12px; background: transparent; text-align: left; cursor: pointer; font-weight: 700; }
.solution-tabs button span { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; font-weight: 500; }
.solution-tabs button[aria-selected="true"] { background: var(--ink); color: white; }
.solution-tabs button[aria-selected="true"] span { color: #b8c4be; }
.solution-panel { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); }
.solution-main { padding: clamp(28px, 4vw, 56px); }
.solution-main h2 { font-size: clamp(30px, 3vw, 42px); }
.solution-main > p { margin: 18px 0 30px; color: var(--muted); }
.solution-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.solution-facts div { min-height: 116px; padding: 18px; background: white; }
.solution-facts span { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.solution-facts strong { display: block; margin-top: 8px; font-size: 14px; line-height: 1.55; }
.solution-side { padding: 28px; background: #f0f2ef; display: flex; flex-direction: column; }
.solution-side img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 14px; }
.solution-side h3 { margin-top: 26px; font-size: 18px; }
.solution-output { margin: 12px 0 0; padding: 0; list-style: none; }
.solution-output li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }

/* AI Twin: task workbench */
.twin-intro { width: var(--shell); margin: 0 auto; padding: 56px 0 32px; display: flex; align-items: end; justify-content: space-between; gap: 50px; }
.twin-intro .page-title { max-width: 760px; }
.twin-intro p { max-width: 430px; margin: 0 0 6px; color: var(--muted); }
.twin-start-mobile { display: none; }
.twin-film-stage__media { position: relative; margin: 0; }
.twin-film-caption { position: absolute; z-index: 4; right: 18px; bottom: 18px; max-width: min(420px, calc(100% - 36px)); margin: 0; padding: 7px 10px; border-radius: 8px; background: rgba(9, 20, 18, .74); color: rgba(255,255,255,.82); font-size: 12px; line-height: 1.45; pointer-events: none; }
.task-chooser { width: var(--shell); margin: 0 auto 18px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.task-choice { min-height: 148px; padding: 16px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.55); text-align: left; cursor: pointer; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.task-choice:hover { transform: translateY(-2px); }
.task-choice[aria-pressed="true"] { border-color: var(--green); background: var(--green-soft); }
.task-choice strong { display: block; font-size: 15px; }
.task-choice span { display: block; margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.twin-workbench { width: var(--shell); margin: 0 auto 110px; display: grid; grid-template-columns: 220px minmax(0, 1fr) 280px; min-height: 640px; border: 1px solid #33423b; border-radius: 24px; overflow: hidden; background: var(--night); color: white; box-shadow: 0 30px 80px rgba(13, 24, 19, .2); }
.task-context { padding: 24px; border-right: 1px solid #35453e; background: #1b2924; }
.task-context small, .source-panel small { color: #7cc09e; font-size: 12px; letter-spacing: .1em; }
.task-context h2 { margin-top: 14px; font-size: 24px; }
.task-context dl { margin: 28px 0 0; }
.task-context dt { margin-top: 20px; color: #9eaca5; font-size: 12px; }
.task-context dd { margin: 5px 0 0; font-size: 14px; }
.conversation { min-width: 0; padding: 28px; display: flex; flex-direction: column; }
.conversation-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid #35453e; }
.conversation-head strong { font-size: 15px; }
.conversation-head span { color: #a7b4ad; font-size: 12px; }
.conversation-body { flex: 1; min-height: 390px; padding: 24px 0 0; }
.welcome-panel h3 { font-size: 24px; }
.welcome-panel p { margin: 10px 0 0; color: #aebbb5; }
.prompt-shortcuts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; margin-top: 22px; }
.prompt-shortcuts button { padding: 12px 14px; border: 1px solid #3d4e46; border-radius: 11px; background: #21312b; color: #dce5e0; text-align: left; cursor: pointer; font-size: 12px; }
.processing-card { padding: 22px; border: 1px solid #43544c; border-radius: 16px; background: #1e2e28; }
.processing-card h3 { font-size: 19px; }
.thinking-steps { margin: 20px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.thinking-steps li { position: relative; padding: 12px 14px 12px 38px; border-radius: 10px; color: #899890; background: #192720; }
.thinking-steps li::before { content: ""; position: absolute; left: 14px; top: 17px; width: 10px; height: 10px; border: 1px solid currentColor; border-radius: 50%; }
.thinking-steps li.is-active { color: white; background: #284338; }
.thinking-steps li.is-active::before { background: var(--gold); border-color: var(--gold); }
.answer-panel h3 { font-size: 21px; }
.answer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.answer-block { padding: 16px; border: 1px solid #3b4c44; border-radius: 12px; background: #1c2b25; }
.answer-block span { color: #7cc09e; font-size: 10px; letter-spacing: .1em; }
.answer-block p { margin: 8px 0 0; color: #c0cbc5; font-size: 13px; }
.composer { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 18px; padding: 10px; border: 1px solid #43544c; border-radius: 16px; background: #21312b; }
.composer textarea { min-height: 70px; resize: vertical; padding: 10px; border: 0; outline: 0; background: transparent; color: white; }
.composer button { align-self: end; }
.composer-note { margin: 9px 2px 0; color: #a1afa7; font-size: 12px; }
.twin-language { display:flex; gap:4px; margin-left:auto; }
.twin-language button { min-height:32px; padding:4px 9px; border:1px solid #43544c; border-radius:999px; background:transparent; color:#cbd5cf; }
.twin-language button[aria-pressed="true"] { background:#d3f36b; color:#172019; border-color:#d3f36b; }
.agent-quick-prompts { display:flex; gap:8px; overflow-x:auto; padding:14px 0 2px; scrollbar-width:thin; }
.agent-quick-prompts button { flex:0 0 auto; min-height:44px; padding:8px 12px; border:1px solid #43544c; border-radius:999px; background:#21312b; color:#dce4df; }
.import-row { display:flex; align-items:center; gap:12px; margin-top:10px; color:#a1afa7; font-size:12px; }
.file-drop { min-height:44px; display:inline-flex; align-items:center; padding:8px 12px; border:1px dashed #60766b; border-radius:10px; cursor:pointer; }
.file-drop input { position:absolute; inline-size:1px; block-size:1px; opacity:0; }
.agent-reply { white-space:pre-wrap; color:#eef3f0; line-height:1.75; }
.source-state { display:inline-flex; min-height:32px; align-items:center; padding:4px 10px; border-radius:999px; background:#294238; color:#d3f36b; font-size:12px; }
.agent-parity { width:var(--shell); margin:0 auto 110px; display:grid; grid-template-columns:minmax(0,1.3fr) minmax(300px,.7fr); gap:20px; }
.brief-editor,.template-card { padding:28px; border:1px solid #d5ddd7; border-radius:22px; background:#fff; box-shadow:0 20px 55px rgba(17,35,26,.08); }
.brief-editor h2,.template-card h2 { margin:8px 0 20px; font-size:clamp(24px,3vw,40px); }
.brief-fields { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.brief-fields label { display:grid; gap:6px; color:#48544e; font-size:13px; }
.brief-fields textarea { width:100%; min-height:82px; resize:vertical; padding:10px; border:1px solid #ccd6cf; border-radius:10px; background:#f8faf8; color:#172019; }
.template-card pre { max-height:380px; overflow:auto; white-space:pre-wrap; padding:16px; border-radius:12px; background:#17241f; color:#dce7e1; font:13px/1.7 ui-monospace,Consolas,monospace; }
.agent-parity button,.agent-parity a { min-height:44px; }
.agent-parity [disabled] { opacity:.48; cursor:not-allowed; }
.state-notice { min-height: 230px; padding: 28px; border: 1px solid #43544c; border-radius: 16px; background: #1e2e28; }
.state-notice > span { color: #92d3af; font-size: 12px; font-weight: 750; letter-spacing: .08em; }
.state-notice h3 { margin-top: 18px; font-size: 22px; }
.state-notice p { margin: 12px 0 0; color: #b8c5be; font-size: 15px; }
.source-panel { padding: 24px; border-left: 1px solid #35453e; background: #1b2924; }
.source-panel h3 { margin-top: 14px; font-size: 18px; }
.source-list { margin: 20px 0 0; padding: 0; list-style: none; }
.source-list li { padding: 14px 0; border-bottom: 1px solid #35453e; }
.source-list strong { display: block; font-size: 13px; }
.source-list span { color: #92a098; font-size: 12px; }
.source-actions { display: grid; gap: 9px; margin-top: 24px; }
.source-actions button { width: 100%; min-height: 44px; padding: 11px; border: 1px solid #43544c; border-radius: 10px; background: transparent; color: white; cursor: pointer; }
.mobile-source-toggle { display: none; }

/* Contact: form first */
.contact-stage { width: var(--shell); margin: 0 auto; padding: 64px 0 100px; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(340px, .82fr); gap: 26px; align-items: start; }
.contact-form-card { padding: clamp(30px, 4vw, 56px); border: 1px solid var(--line); border-radius: 24px; background: white; box-shadow: var(--shadow); }
.contact-form-card .page-title { max-width: 700px; }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 38px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid var(--line); border-radius: 11px; padding: 13px 14px; background: #f8faf7; color: var(--ink); }
.field textarea { min-height: 140px; resize: vertical; }
.form-footer { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 8px; }
.form-note { max-width: 360px; margin: 0; color: var(--muted); font-size: 12px; }
.form-status { grid-column: 1 / -1; min-height: 24px; color: var(--green); font-size: 13px; font-weight: 700; }
.contact-side { display: grid; gap: 18px; }
.prep-card { padding: 30px; border-radius: 24px; background: var(--night); color: white; }
.prep-card h2 { font-size: 29px; }
.prep-list { margin: 24px 0 0; padding: 0; list-style: none; }
.prep-list li { padding: 16px 0; border-top: 1px solid #3a4943; }
.prep-list strong { display: block; font-size: 14px; }
.prep-list span { color: #abb8b2; font-size: 12px; }
.contact-media { margin: 0; }
.contact-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 20px; }

/* Secondary pages and legacy-safe generic content */
.editorial-hero, .about-intro, .legal-page, .not-found { width: var(--shell); margin: 0 auto; padding: 80px 0 64px; }
.editorial-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; }
.article-list { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
.article-card { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.article-card:first-child { grid-row: span 2; }
.article-card p { color: var(--muted); }
.article-card .status { display: inline-block; margin-top: 20px; color: var(--green); font-size: 12px; font-weight: 750; }
.about-method { display: grid; grid-template-columns: .75fr 1.25fr; gap: 56px; align-items: start; }
.founder-visual { margin: 0; max-width: 360px; }
.founder-visual img { width: 100%; border-radius: 18px; }
.founder-visual figcaption { margin-top: 8px; color: var(--muted); font-size: 12px; }
.legal-page { max-width: 900px; }
.legal-page h1, .not-found h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1; }
.legal-page section { margin-top: 50px; }
.legal-page p, .legal-page li { color: var(--muted); }

.closing-band { padding: 86px 24px; background: var(--paper-2); text-align: center; }
.closing-band h2 { max-width: 760px; margin: 0 auto; }
.closing-band p { max-width: 620px; margin: 18px auto 0; color: var(--muted); }
.closing-band .button-row { justify-content: center; }
.site-footer { padding: 62px max(36px, calc((100vw - 1240px)/2)); background: #111b18; color: white; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.footer-brand { font-size: 18px; font-weight: 760; }
.footer-brand span { color: #75bb99; }
.footer-grid p { max-width: 440px; margin-top: 14px; color: #9eaaa4; font-size: 13px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px 24px; font-size: 13px; }
.footer-meta { display: flex; justify-content: space-between; gap: 30px; margin-top: 44px; padding-top: 20px; border-top: 1px solid #2f3b36; color: #98a49d; font-size: 12px; }
.toast { position: fixed; z-index: 90; left: 50%; bottom: 28px; max-width: calc(100vw - 32px); padding: 12px 18px; border-radius: 999px; background: var(--ink); color: white; opacity: 0; transform: translate(-50%, 12px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1100px) {
  :root { --shell: min(100% - 48px, 980px); }
  .site-nav { gap: 18px; }
  .home-intro { grid-template-columns: .85fr 1.15fr; }
  .task-chooser { grid-template-columns: repeat(3, 1fr); }
  .twin-workbench { grid-template-columns: 190px minmax(0,1fr); }
  .source-panel { grid-column: 1 / -1; border-left: 0; border-top: 1px solid #35453e; }
  .solution-panel { grid-template-columns: 1fr; }
  .solution-side { display: grid; grid-template-columns: 240px 1fr; gap: 24px; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100vw - 32px); }
  html { scroll-behavior: auto; }
  .site-header { height: 66px; gap: 12px; }
  .site-nav, .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .mobile-nav { position: fixed; z-index: 80; inset: 66px 0 0; display: grid; align-content: start; padding: 26px 20px; background: rgba(244,246,242,.98); transform: translateY(-110%); opacity: 0; transition: transform .18s ease, opacity .18s ease; }
  .mobile-nav.is-open { transform: translateY(0); opacity: 1; }
  .mobile-nav a { padding: 16px 4px; border-bottom: 1px solid var(--line); font-size: 18px; font-weight: 650; }
  .display, .page-title { font-size: clamp(32px, 8.8vw, 38px); line-height: 1.14; letter-spacing: -.045em; }
  h2 { font-size: 31px; }
  .lead { font-size: 16px; line-height: 1.65; }
  .section-pad { padding: 72px 0; }
  .section-intro, .editorial-grid, .about-method { grid-template-columns: 1fr; gap: 24px; }
  .button-row { gap: 9px; }
  .button-primary, .button-secondary { min-height: 48px; padding: 0 18px; }
  .trust-strip .section-shell { padding: 14px 0; display: block; }
  .trust-strip span { display: block; }

  .home-intro { width: 100%; margin: 0; display: flex; flex-direction: column; min-height: auto; gap: 0; }
  .home-intro__copy { order: 1; width: var(--shell); margin: 0 auto; padding: 30px 0 24px; }
  .home-intro__copy .kicker { margin-bottom: 14px; }
  .home-intro__copy .lead { margin-top: 16px; }
  .home-intro__copy .button-row { margin-top: 22px; }
  .home-intro__scene { order: 2; height: clamp(288px, 40vh, 372px); overflow: hidden; background: #cad5d2; }
  .home-intro__scene img { object-fit: cover; object-position: 56% center; }
  .home-intro__meta { display: none; }
  .home-capability-band { order: 3; display: grid; grid-template-columns: 1fr 1fr; width: var(--shell); margin: -22px auto 0; border: 1px solid #34433d; border-radius: 14px; overflow: hidden; background: var(--night); color: white; }
  .home-capability-band div { min-height: 96px; padding: 14px; border-right: 1px solid #34433d; border-bottom: 1px solid #34433d; }
  .home-capability-band div:nth-child(2n) { border-right: 0; }
  .home-capability-band div:nth-last-child(-n+2) { border-bottom: 0; }
  .home-capability-band span { color: #b9d66a; font-size: 12px; }
  .home-capability-band strong { display: block; margin-top: 4px; font-size: 15px; }
  .home-capability-band small { display: block; margin-top: 2px; color: #aebbb5; font-size: 12px; }
  .entry-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .entry-card:first-child { grid-row: auto; min-height: 210px; }
  .entry-card { min-height: 146px; }
  .mini-system { grid-template-columns: 1fr; }
  .mini-system__aside { position: static; }
  .work-path { padding: 8px 18px; }
  .work-step { grid-template-columns: 70px 1fr; gap: 12px; }
  .work-step b { display: none; }

  .product-intro { padding: 50px 0 48px; grid-template-columns: 1fr; gap: 38px; }
  .product-intro.aios-film { width: 100%; margin: 0; padding: 0 0 34px; display: flex; flex-direction: column; gap: 0; overflow: hidden; }
  .aios-film > div:nth-child(2) { order: 1; width: var(--shell); margin: 0 auto; padding: 30px 0 24px; }
  .aios-film > div:nth-child(2) .kicker { margin-bottom: 14px; }
  .aios-film .lead { margin-top: 16px; }
  .aios-film .button-row { margin-top: 22px; }
  .aios-film__media { order: 2; height: clamp(288px, 40vh, 372px); overflow: hidden; background: #27332f; }
  .aios-film__media img { object-fit: cover; object-position: center; }
  .aios-capability-band { order: 3; width: var(--shell); margin: -22px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 10px; }
  .aios-capability-band .system-layer { min-height: 118px; margin: 0; padding: 12px; display: block; }
  .aios-capability-band .system-layer i { width: 30px; height: 30px; }
  .aios-capability-band .system-layer strong { display: block; margin-top: 8px; font-size: 14px; }
  .aios-capability-band .system-layer span { display: block; margin-top: 4px; font-size: 12px; line-height: 1.45; }
  .system-map { padding: 10px; }
  .system-layer { grid-template-columns: 38px 1fr; min-height: 84px; }
  .system-layer span { grid-column: 2; }
  .task-flow { grid-template-columns: 1fr; }
  .task-flow article { min-height: auto; }
  .architecture-feature { grid-template-columns: 1fr; }

  .solutions-heading { padding: 48px 0 28px; grid-template-columns: 1fr; gap: 18px; }
  .solution-workspace { grid-template-columns: 1fr; margin-bottom: 70px; }
  .solution-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; border-right: 0; border-bottom: 1px solid var(--line); }
  .solution-tabs button { padding: 11px; font-size: 12px; }
  .solution-tabs button { min-height: 48px; }
  .solution-tabs button span { display: none; }
  .solution-main { padding: 26px 20px; }
  .solution-facts { grid-template-columns: 1fr; }
  .solution-side { grid-template-columns: 1fr; padding: 20px; }

  .solutions-hero { width: var(--shell); margin: 0 auto; padding: 30px 0 42px; display: flex; flex-direction: column; }
  .solutions-hero__copy { order: 1; }
  .solutions-hero__copy .lead { margin-top: 16px; }
  .solutions-hero__copy .button-row { margin-top: 22px; }
  .solutions-hero__media { order: 2; margin: 28px 0 0; }
  .solutions-hero__media img { width: 100%; height: 330px; object-fit: cover; border-radius: 18px; }

  .editorial-hero { padding: 30px 0 54px; }
  .editorial-hero .editorial-grid { display: flex; flex-direction: column; }
  .editorial-hero figure { margin: 8px 0 0 !important; }
  .editorial-hero figure img { width: 100%; height: 340px; object-fit: cover; border-radius: 18px !important; }

  .about-intro { position: relative; width: 100%; margin: 0; padding: 0 0 24px; display: flex; flex-direction: column; color: var(--ink); }
  .about-intro__copy { order: 1; width: var(--shell); margin: 0 auto; padding: 30px 0 24px; }
  .about-intro__media { order: 2; height: 360px; }
  .about-intro__media img { width: 100%; height: 100%; object-fit: cover; }
  .about-value-band { order: 3; width: var(--shell); margin: -24px auto 0; display: grid; grid-template-columns: 1fr 1fr; border-radius: 16px; overflow: hidden; background: var(--night); color: white; }
  .about-value-band div { min-height: 94px; padding: 14px; border-right: 1px solid #35453e; border-bottom: 1px solid #35453e; }
  .about-value-band div:nth-child(2n) { border-right: 0; }
  .about-value-band div:nth-last-child(-n+2) { border-bottom: 0; }
  .about-value-band strong { display: block; color: #c4dc78; }
  .about-value-band span { display: block; margin-top: 4px; color: #b6c1bb; font-size: 12px; }

  .twin-film-stage { height: auto; display: flex; flex-direction: column; overflow: hidden; }
  .twin-film-stage__media { order: 2; height: clamp(288px, 38vh, 354px); overflow: hidden; background: #17221f; }
  .twin-film-stage__media img { width: 100%; height: 100%; object-fit: cover; object-position: 68% center; }
  .twin-film-caption { right: 12px; bottom: 12px; max-width: calc(100% - 24px); font-size: 12px; }
  .twin-intro { order: 1; padding: 30px 0 24px; display: block; }
  .twin-intro .kicker { margin-bottom: 14px; }
  .twin-intro p { margin-top: 16px; font-size: 16px; }
  .twin-start-mobile { display: flex; margin-top: 22px; }
  .task-chooser { order: 3; display: flex; width: 100%; margin: 0; padding: 18px 16px 24px; gap: 10px; overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: thin; background: #e8ece7; }
  .task-choice { flex: 0 0 154px; min-height: 116px; padding: 14px; scroll-snap-align: start; background: rgba(255,255,255,.78); }
  .task-choice strong { font-size: 15px; }
  .task-choice span { margin-top: 6px; font-size: 12px; line-height: 1.4; }
  .twin-workbench { grid-template-columns: 1fr; min-height: auto; margin: 28px auto 72px; border-radius: 18px; }
  .task-context { border-right: 0; border-bottom: 1px solid #35453e; }
  .task-context { padding: 18px 20px; }
  .task-context h2 { margin-top: 8px; font-size: 20px; }
  .task-context dl { display: none; }
  .conversation { padding: 20px; }
  .conversation-body { min-height: 430px; padding-top: 20px; }
  .prompt-shortcuts, .answer-grid { grid-template-columns: 1fr; }
  .composer { grid-template-columns: 1fr; }
  .composer textarea { min-height: 88px; }
  .composer .button-primary { width: 100%; }
  .answer-grid { gap: 8px; }
  .answer-block { padding: 11px 13px; }
  .answer-block p { font-size: 14px; }
  .answer-panel .button-row { display: grid; grid-template-columns: 1fr 1fr; }
  .answer-panel .button-row > :last-child { grid-column: 1 / -1; }
  .answer-panel .button-primary, .answer-panel .button-secondary { width: 100%; padding-inline: 12px; }
  .processing-card .button-row { margin-top: 20px; }
  .processing-card .button-secondary { min-width: 120px; color: white; border-color: #73847b; background: transparent; }
  .state-notice { min-height: 260px; }
  .source-panel { padding: 0; }
  .agent-parity { grid-template-columns:1fr; margin-bottom:72px; }
  .brief-fields { grid-template-columns:1fr; }
  .brief-editor,.template-card { padding:20px; border-radius:18px; }
  .conversation-head { flex-wrap:wrap; }
  .twin-language { order:3; margin-left:0; width:100%; }
  .twin-language button { min-height:44px; }
  .import-row { align-items:flex-start; flex-direction:column; }
  .mobile-source-toggle { display: flex; width: 100%; min-height: 52px; align-items: center; justify-content: space-between; padding: 14px 20px; border: 0; background: #1b2924; color: white; }
  .source-panel__inner { padding: 0 20px 22px; }

  .contact-stage { padding: 46px 0 72px; grid-template-columns: 1fr; }
  .contact-pitch { padding: 4px 0 8px; }
  .contact-pitch h2 { font-size: 30px; }
  .contact-pitch p:last-child { margin: 16px 0 0; color: var(--muted); font-size: 16px; }
  .contact-form-card { padding: 26px 20px; }
  .contact-form { grid-template-columns: 1fr; }
  .field.full, .form-footer, .form-status { grid-column: auto; }
  .form-footer { align-items: stretch; flex-direction: column-reverse; }
  .form-footer .button-primary { width: 100%; }
  .contact-media { display: none; }
  .prep-card { padding: 24px 20px; }

  .editorial-hero, .about-intro, .legal-page, .not-found { padding: 54px 0 44px; }
  .article-list { grid-template-columns: 1fr; }
  .article-card:first-child { grid-row: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-meta { display: block; }
  .footer-meta span { display: block; margin-top: 7px; }
  .site-footer { padding: 48px 16px; }
}

@media (max-width: 370px) {
  .task-chooser, .solution-tabs { grid-template-columns: 1fr; }
  .task-choice { min-height: 112px; }
  .home-intro__meta { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* M12 active route system: cinematic continuity; supersedes the M11 visual-ready state */
@media (min-width: 761px) {
  .route-home .site-header,
  .route-aios .site-header,
  .route-solutions .site-header,
  .route-twin .site-header,
  .route-contact .site-header {
    position: absolute;
    z-index: 30;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    border-bottom-color: rgba(255,255,255,.18);
  }
  .route-aios .site-header,
  .route-twin .site-header,
  .route-contact .site-header { color: white; }
  .route-aios .site-nav a,
  .route-twin .site-nav a,
  .route-contact .site-nav a { color: rgba(255,255,255,.78); }
  .route-aios .site-nav a[aria-current="page"],
  .route-twin .site-nav a[aria-current="page"],
  .route-contact .site-nav a[aria-current="page"] { color: white; }
  .route-aios .site-brand span,
  .route-twin .site-brand span,
  .route-contact .site-brand span { color: #b7d36a; }
  .route-aios .nav-cta,
  .route-twin .nav-cta,
  .route-contact .nav-cta { background: #78942d; }

  /* Home: full mountain-lake composition */
  .home-intro {
    position: relative;
    width: 100%;
    height: 900px;
    min-height: 900px;
    margin: 0;
    display: block;
    overflow: hidden;
    color: #13201b;
  }
  .home-intro__scene { position: absolute; inset: 0; }
  .home-intro__scene picture,
  .home-intro__scene img { width: 100%; height: 100%; }
  .home-intro__scene img { object-fit: cover; object-position: center 51%; }
  .home-intro::after {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 43%;
    background: linear-gradient(90deg, rgba(238,243,239,.86) 0%, rgba(238,243,239,.56) 58%, rgba(238,243,239,0) 100%);
    pointer-events: none;
  }
  .home-intro__copy {
    position: relative;
    z-index: 2;
    width: min(1240px, calc(100vw - 72px));
    height: 100%;
    margin: 0 auto;
    padding: 155px 0 230px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .home-intro__copy > * { max-width: 500px; }
  .home-intro .display { font-size: clamp(46px, 3.8vw, 58px); line-height: 1.1; letter-spacing: -.048em; }
  .home-intro .lead { max-width: 500px; font-size: 17px; color: #3f5048; }
  .home-intro__meta { display: none; }
  .home-capability-band {
    position: absolute;
    z-index: 3;
    left: 50%;
    bottom: 34px;
    width: min(1240px, calc(100vw - 72px));
    transform: translateX(-50%);
    display: grid;
    grid-template-columns: repeat(4,1fr);
    padding: 0;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 16px;
    overflow: hidden;
    background: rgba(12,26,23,.67);
    color: white;
    backdrop-filter: blur(12px);
  }
  .home-capability-band div { padding: 20px 24px; border-right: 1px solid rgba(255,255,255,.14); }
  .home-capability-band div:last-child { border-right: 0; }
  .home-capability-band span { color: #b9d66a; font-size: 10px; letter-spacing: .12em; }
  .home-capability-band strong { display: block; margin-top: 5px; font-size: 17px; }
  .home-capability-band small { display: block; margin-top: 4px; color: rgba(255,255,255,.65); font-size: 12px; }
  .route-home .trust-strip { display: none; }

  /* AI OS: architecture path as the stage */
  .product-intro.aios-film {
    position: relative;
    width: 100%;
    height: 900px;
    margin: 0;
    padding: 0;
    display: block;
    overflow: hidden;
    color: white;
  }
  .aios-film__media { position: absolute; inset: 0; }
  .aios-film__media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .aios-film::after {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 45%;
    background: linear-gradient(90deg, rgba(8,18,18,.92), rgba(8,18,18,.58) 64%, rgba(8,18,18,0));
  }
  .aios-film > div:nth-child(2) {
    position: relative;
    z-index: 2;
    width: min(1240px, calc(100vw - 72px));
    margin: 0 auto;
    padding-top: 170px;
  }
  .aios-film .page-title { max-width: 560px; font-size: clamp(46px,3.7vw,58px); }
  .aios-film .lead { max-width: 530px; color: rgba(255,255,255,.76); font-size: 17px; }
  .aios-film .button-secondary { color: white; border-color: rgba(255,255,255,.4); background: rgba(15,30,27,.25); }
  .aios-film .kicker { color: #b9d66a; }
  .aios-capability-band {
    position: absolute;
    z-index: 3;
    left: 50%;
    bottom: 0;
    width: min(1240px, calc(100vw - 72px));
    transform: translateX(-50%);
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 0;
    padding: 0;
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 16px 16px 0 0;
    background: rgba(12,25,23,.72);
    backdrop-filter: blur(12px);
    box-shadow: none;
  }
  .aios-capability-band .system-layer {
    display: block;
    min-height: 170px;
    margin: 0;
    padding: 24px;
    border: 0;
    border-right: 1px solid rgba(255,255,255,.14);
    border-radius: 0;
    background: transparent;
  }
  .aios-capability-band .system-layer:last-child { border-right: 0; }
  .aios-capability-band .system-layer i { width: 30px; height: 30px; background: rgba(185,214,106,.14); color: #c6df7e; }
  .aios-capability-band .system-layer strong { display: block; margin-top: 14px; color: white; }
  .aios-capability-band .system-layer span { display: block; margin-top: 8px; color: rgba(255,255,255,.62); line-height: 1.55; }

  /* Solutions: light spatial workroom, not a dashboard */
  .solutions-hero { width: var(--shell); min-height: 650px; margin: 0 auto; padding: 126px 0 54px; display: grid; grid-template-columns: .9fr 1.1fr; gap: 58px; align-items: center; }
  .solutions-hero__copy .page-title { max-width: 590px; font-size: clamp(44px,3.5vw,56px); }
  .solutions-hero__copy .lead { font-size: 17px; }
  .solutions-hero__media { margin: 0; }
  .solutions-hero__media img { width: 100%; height: 470px; object-fit: cover; border-radius: 22px; box-shadow: var(--shadow); }
  .route-solutions main {
    min-height: 900px;
    padding-top: 76px;
    background: linear-gradient(145deg,#edf3f6 0%,#f5f5ef 52%,#dce6e6 100%);
  }
  .solutions-heading {
    position: relative;
    z-index: 2;
    padding: 48px 0 28px;
    grid-template-columns: 1.05fr .8fr;
    gap: 80px;
  }
  .solutions-heading .page-title { max-width: 670px; font-size: clamp(44px,3.6vw,56px); }
  .solutions-heading .lead { font-size: 17px; color: #50615a; }
  .solution-workspace {
    position: relative;
    z-index: 2;
    min-height: 590px;
    height: 590px;
    margin-bottom: 0;
    grid-template-columns: 205px minmax(0,1fr);
    border-color: rgba(100,120,110,.22);
    border-radius: 16px 16px 0 0;
    background: rgba(246,248,245,.82);
    box-shadow: 0 28px 70px rgba(53,72,64,.15);
    backdrop-filter: blur(10px);
  }
  .solution-tabs { padding: 18px 12px; background: rgba(230,235,229,.78); }
  .solution-tabs button { padding: 14px; }
  .solution-tabs button[aria-selected="true"] { background: #1b2b26; }
  .solution-panel { grid-template-columns: minmax(0,1.05fr) minmax(390px,.95fr); }
  .solution-main { padding: 36px 42px; }
  .solution-main h2 { font-size: 36px; }
  .solution-main > p { margin: 12px 0 20px; font-size: 14px; }
  .solution-facts { gap: 0; border: 0; background: transparent; }
  .solution-facts div { min-height: 86px; padding: 12px 14px; border-top: 1px solid var(--line); background: transparent; }
  .solution-facts strong { font-size: 13px; }
  .solution-main .button-row { margin-top: 18px; }
  .solution-side { position: relative; display: block; padding: 0; overflow: hidden; background: #ccd8d2; }
  .solution-side img { width: 100%; height: 100%; aspect-ratio: auto; border-radius: 0; object-fit: cover; }
  .solution-side > div {
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 20px;
    padding: 16px 20px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 12px;
    background: rgba(14,29,25,.72);
    color: white;
    backdrop-filter: blur(10px);
  }
  .solution-side h3 { margin: 0; }
  .solution-output { display: flex; flex-wrap: wrap; gap: 8px; }
  .solution-output li { padding: 4px 9px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.76); }
  .solution-side .caption { display: none; }

  /* Insights: editorial cinema split */
  .editorial-hero { width: 100%; min-height: 760px; padding: 0; background: #e8ece8; }
  .editorial-hero .editorial-grid { width: var(--shell); min-height: 760px; margin: 0 auto; padding-top: 76px; grid-template-columns: .78fr 1.22fr; align-items: center; }
  .editorial-hero .page-title { max-width: 520px; font-size: clamp(46px,3.8vw,58px); }
  .editorial-hero figure { margin: 0 !important; }
  .editorial-hero figure img { width: 100%; height: 570px; aspect-ratio: auto !important; object-fit: cover; border-radius: 22px !important; box-shadow: var(--shadow); }

  /* About: building cinema stage */
  .about-intro { position: relative; width: 100%; height: 820px; margin: 0; padding: 0; overflow: hidden; color: white; }
  .about-intro__media { position: absolute; inset: 0; }
  .about-intro__media img { width: 100%; height: 100%; object-fit: cover; }
  .about-intro::after { content:""; position:absolute; inset:0; background:linear-gradient(90deg,rgba(7,17,18,.88),rgba(7,17,18,.48) 46%,rgba(7,17,18,.06) 75%),linear-gradient(0deg,rgba(7,17,18,.72),transparent 45%); }
  .about-intro__copy { position:relative; z-index:2; width:var(--shell); margin:0 auto; padding-top:170px; }
  .about-intro__copy .page-title { max-width:620px; font-size:clamp(46px,3.8vw,58px); }
  .about-intro__copy .lead { max-width:560px; color:rgba(255,255,255,.78); font-size:17px; }
  .about-value-band { position:absolute; z-index:3; left:50%; bottom:32px; transform:translateX(-50%); width:var(--shell); display:grid; grid-template-columns:repeat(4,1fr); border:1px solid rgba(255,255,255,.18); border-radius:16px; background:rgba(10,23,21,.7); backdrop-filter:blur(12px); }
  .about-value-band div { padding:22px 24px; border-right:1px solid rgba(255,255,255,.15); }
  .about-value-band div:last-child { border-right:0; }
  .about-value-band strong { display:block; color:#c4dc78; }
  .about-value-band span { display:block; margin-top:6px; color:rgba(255,255,255,.7); font-size:13px; }

  /* AI Twin: office scene first, workbench second */
  .twin-film-stage {
    position: relative;
    height: 900px;
    overflow: hidden;
    color: white;
  }
  .twin-film-stage__media { position: absolute; inset: 0; }
  .twin-film-stage__media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .twin-film-caption { bottom: 210px; }
  .twin-film-stage::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(8,19,19,.9) 0%, rgba(8,19,19,.54) 34%, rgba(8,19,19,.06) 72%), linear-gradient(0deg, rgba(8,19,19,.78) 0%, transparent 48%);
  }
  .twin-film-stage .twin-intro {
    position: relative;
    z-index: 2;
    padding-top: 155px;
    display: block;
  }
  .twin-film-stage .twin-intro .page-title { max-width: 600px; font-size: clamp(46px,3.7vw,58px); }
  .twin-film-stage .twin-intro p:last-child { max-width: 520px; margin-top: 22px; color: rgba(255,255,255,.72); font-size: 17px; }
  .twin-film-stage .kicker { color: #b9d66a; }
  .twin-film-stage .task-chooser {
    position: absolute;
    z-index: 3;
    left: 50%;
    bottom: 36px;
    transform: translateX(-50%);
    grid-template-columns: repeat(6,1fr);
    gap: 10px;
    margin: 0;
  }
  .twin-film-stage .task-choice {
    min-height: 154px;
    padding: 18px;
    border-color: rgba(255,255,255,.16);
    background: rgba(13,28,25,.68);
    color: white;
    backdrop-filter: blur(12px);
  }
  .twin-film-stage .task-choice[aria-pressed="true"] { border-color: #b9d66a; background: rgba(33,57,47,.8); }
  .twin-film-stage .task-choice span { color: rgba(255,255,255,.62); }
  .route-twin .twin-workbench { margin-top: 90px; }

  /* Contact: full reception background and floating form */
  .contact-stage {
    position: relative;
    width: 100%;
    height: 900px;
    padding: 120px max(36px,calc((100vw - 1240px)/2)) 50px;
    grid-template-columns: 1.05fr .95fr;
    gap: 70px;
    overflow: hidden;
    background: url('./assets/aios-center-rebuild-20260713/contact-hero-reception-collaboration-v1-desktop.webp') center/cover no-repeat;
  }
  .contact-stage::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(9,21,19,.86) 0%, rgba(9,21,19,.58) 44%, rgba(9,21,19,.12) 72%);
  }
  .contact-form-card,
  .contact-side { position: relative; z-index: 2; }
  .contact-form-card {
    grid-column: 2;
    grid-row: 1;
    align-self: center;
    max-height: 740px;
    padding: 24px 32px;
    border-color: rgba(255,255,255,.55);
    border-radius: 16px;
    background: rgba(250,250,246,.93);
    backdrop-filter: blur(14px);
  }
  .contact-form-card .page-title { font-size: 40px; }
  .contact-form-card .lead { margin-top: 12px; font-size: 16px; }
  .contact-form { margin-top: 18px; gap: 8px 12px; }
  .field { gap: 4px; }
  .field input, .field select, .field textarea { padding: 10px 12px; }
  .field textarea { min-height: 70px; }
  .form-footer { margin-top: 2px; }
  .contact-side { grid-column: 1; grid-row: 1; align-self: center; display: block; color: white; }
  .contact-pitch { max-width: 520px; }
  .contact-pitch .kicker { color: #b9d66a; }
  .contact-pitch h2 { font-size: 52px; }
  .contact-pitch p:last-child { margin-top: 22px; max-width: 470px; color: rgba(255,255,255,.72); font-size: 17px; }
  .prep-card { margin-top: 40px; padding: 0; border-radius: 0; background: transparent; }
  .prep-card .kicker,
  .prep-card h2 { display: none; }
  .prep-list { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
  .prep-list li { padding: 16px 0; border-top-color: rgba(255,255,255,.28); }
  .prep-list span { color: rgba(255,255,255,.58); }
  .contact-media { display: none; }
}