:root {
  color-scheme: dark;
  --bg: #0b0f13;
  --surface: #10151b;
  --surface-2: #161d24;
  --text: #f2f5f7;
  --muted: #9ba7b3;
  --line: #26313a;
  --accent: #8fd3ff;
  --accent-soft: rgba(143, 211, 255, 0.12);
  --accent-secondary: #f2b84b;
  --accent-secondary-soft: rgba(242, 184, 75, 0.14);
  --panel-radius: 0;
  --display: Arial, Helvetica, sans-serif;
  --body: Arial, Helvetica, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #e9e4d8;
  --surface: #f6f3ed;
  --surface-2: #ece8df;
  --text: #111111;
  --muted: #686761;
  --line: #cbc6ba;
  --accent: #f2c53d;
  --accent-soft: rgba(242, 197, 61, 0.19);
  --accent-secondary: #f2b84b;
  --accent-secondary-soft: rgba(242, 184, 75, 0.14);
  --panel-radius: 30px;
  --display: Arial, Helvetica, sans-serif;
  --body: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  transition: background 320ms ease, color 320ms ease;
}
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; }

.site-shell { min-height: 100vh; overflow: hidden; }
.utility-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(20px, 4vw, 64px);
  font: 11px/1 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.utility-bar strong { color: var(--text); letter-spacing: .04em; }
.utility-right { display: flex; gap: 16px; align-items: center; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); display: inline-block; }

.frame {
  margin: 0 clamp(14px, 4vw, 64px) 64px;
  border: 1px solid var(--line);
  min-height: calc(100vh - 102px);
  position: relative;
}
[data-theme="light"] .frame { border: 0; background: #151515; padding: 12px; border-radius: 40px; }
.page-panel { min-height: calc(100vh - 126px); background: var(--surface); border-radius: var(--panel-radius); position: relative; overflow: hidden; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px clamp(22px, 4vw, 62px);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 3;
}
[data-theme="light"] header { border: 0; }
.brand-lockup { display: flex; align-items: baseline; gap: 14px; }
.brand { font-size: 18px; letter-spacing: .12em; font-weight: 700; }
.brand-sub { color: var(--muted); font: 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.nav { display: flex; gap: clamp(18px, 3vw, 48px); align-items: center; color: var(--muted); font-size: 13px; }
.nav a:hover, .nav a:focus-visible { color: var(--text); }
.nav-cta { border: 1px solid var(--text); padding: 10px 14px; color: var(--text); border-radius: 999px; }
[data-theme="light"] .nav { background: #ece9e1; border: 1px solid #c9c6be; padding: 9px 16px; border-radius: 999px; color: #30302e; }
[data-theme="light"] .nav-cta { background: #171717; color: #f7f5ef; border-color: #171717; }
.menu-button { display: none; border: 0; background: transparent; color: var(--text); padding: 8px 0; }

.hero { display: grid; grid-template-columns: minmax(0, .98fr) minmax(0, 1.02fr); min-height: 680px; }
.hero-copy { padding: clamp(54px, 8vw, 124px) clamp(26px, 6vw, 92px) 64px; align-self: center; position: relative; z-index: 2; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--muted); font: 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 26px; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--accent); }
h1 { font-family: var(--display); font-weight: 500; font-size: clamp(56px, 8vw, 118px); line-height: .92; letter-spacing: -.075em; margin: 0; max-width: 720px; }
[data-theme="light"] h1 { font-size: clamp(54px, 7vw, 100px); letter-spacing: -.07em; }
h1 em { color: var(--accent); font-style: normal; }
.hero-description { color: var(--muted); font-size: 16px; line-height: 1.55; max-width: 380px; margin: 32px 0; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { border: 1px solid var(--text); background: var(--text); color: var(--bg); padding: 15px 20px; border-radius: 999px; font-size: 14px; font-weight: 600; transition: transform 180ms ease, background 180ms ease, color 180ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button.secondary { background: transparent; color: var(--text); }
.button.secondary:hover, .button.secondary:focus-visible { background: var(--text); color: var(--bg); }
[data-theme="light"] .button { background: #171717; color: #f7f5ef; border-color: #171717; border-radius: 6px; }
[data-theme="light"] .button.secondary { background: transparent; color: #171717; border-color: #a8a49a; }
.hero-meta { margin-top: 76px; display: flex; gap: 32px; color: var(--muted); font: 11px/1.45 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.hero-meta strong { color: var(--text); display: block; font-weight: 400; margin-top: 6px; }

.hero-visual { position: relative; min-height: 680px; overflow: hidden; }
.hero-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
[data-theme="dark"] .hero-visual img { opacity: .78; mix-blend-mode: screen; object-position: center 18%; }
[data-theme="light"] .hero-visual { background: #edeae2; }
[data-theme="light"] .hero-visual img { object-fit: contain; padding: 12% 5% 8% 0; mix-blend-mode: multiply; }
.visual-label { position: absolute; left: 22px; bottom: 24px; padding: 10px 12px; border: 1px solid rgba(255,255,255,.25); color: rgba(255,255,255,.72); font: 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; background: rgba(0,0,0,.18); }
[data-theme="light"] .visual-label { color: #55534e; border-color: #bcb7aa; background: rgba(246,243,237,.72); }

.proof-strip { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1.2fr repeat(3, 1fr); }
.proof-strip > div { padding: 24px clamp(18px, 3vw, 40px); border-right: 1px solid var(--line); }
.proof-strip > div:last-child { border-right: 0; }
.proof-label { color: var(--muted); font: 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .12em; }
.proof-value { font-size: 18px; margin-top: 10px; }
.proof-intro .proof-value { font-size: 22px; letter-spacing: -.03em; }

.section { padding: 108px clamp(24px, 7vw, 110px); border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; gap: 28px; align-items: end; margin-bottom: 44px; }
.section-heading h2 { font-size: clamp(34px, 5vw, 64px); letter-spacing: -.06em; margin: 0; font-weight: 500; }
.section-heading p { color: var(--muted); max-width: 360px; line-height: 1.5; margin: 0; }
.capabilities { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.capability { padding: 26px 0 30px; border-bottom: 1px solid var(--line); }
.capability:not(:nth-child(3n + 1)) { padding-left: 26px; border-left: 1px solid var(--line); }
.capability:nth-child(-n + 3) { border-bottom: 1px solid var(--line); }
.capability small { color: var(--muted); font: 11px var(--mono); }
.capability h3 { margin: 24px 0 10px; font-weight: 400; font-size: 22px; }
.capability p { color: var(--muted); line-height: 1.5; max-width: 260px; margin: 0; font-size: 14px; }

.hero-passport-stage { display: none; }
[data-theme="dark"] .hero-passport-stage { position: absolute; inset: 10% 9% 9%; display: flex; align-items: center; justify-content: center; }
.hero-passport { width: min(100%, 470px); padding: 20px 0 22px; border-top: 1px solid #52616d; border-bottom: 1px solid #52616d; }
.hero-passport-top, .hero-passport-meta, .hero-passport-access { display: flex; justify-content: space-between; gap: 18px; }
.hero-passport-top { color: #9ba7b3; font: 10px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.hero-passport-status { color: var(--accent-secondary); }
.hero-passport-role { margin: 48px 0 8px; font-size: clamp(34px, 4vw, 58px); line-height: .96; letter-spacing: -.065em; }
.hero-passport-id { color: #84909c; font: 10px/1.4 var(--mono); letter-spacing: .07em; }
.hero-passport-rule { height: 1px; margin: 24px 0; background: #26313a; }
.hero-passport-meta { color: #84909c; font: 10px/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.hero-passport-meta strong { display: block; margin-top: 5px; color: #e6edf4; font: 15px/1 var(--body); letter-spacing: -.02em; text-transform: none; font-weight: 400; }
.hero-passport-access { align-items: end; margin-top: 48px; }
.hero-passport-access span { color: #84909c; font: 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.hero-passport-access b { color: var(--accent); font-size: 22px; font-weight: 400; }

.section-lead { max-width: 760px; margin-bottom: 44px; }
.section-lead h2 { margin: 0; font-size: clamp(36px, 5vw, 70px); line-height: .94; letter-spacing: -.065em; font-weight: 500; }
.section-lead p { max-width: 520px; margin: 24px 0 0; color: var(--muted); line-height: 1.55; }
.intake-layout { display: grid; grid-template-columns: 1.15fr .85fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.intake-prompt { padding: 36px 38px 38px 0; border-right: 1px solid var(--line); }
.intake-prompt h3 { max-width: 560px; margin: 0 0 34px; font-size: clamp(28px, 4vw, 54px); line-height: .98; letter-spacing: -.06em; font-weight: 400; }
.prompt-field { display: flex; justify-content: space-between; gap: 20px; padding: 16px 0; border-top: 1px solid var(--line); color: #dbe4ed; }
.prompt-field span:first-child { color: var(--muted); font: 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.prompt-field span:last-child { text-align: right; }
.intake-context { padding: 36px 0 38px 38px; }
.intake-context h3 { margin: 0; font-size: 18px; font-weight: 400; }
.intake-context p { color: var(--muted); line-height: 1.55; }
.intake-list, .plain-list { display: grid; gap: 13px; padding: 0; margin: 24px 0 0; list-style: none; }
.intake-list li, .plain-list li { display: flex; gap: 12px; color: #dbe4ed; font-size: 14px; line-height: 1.45; }
.intake-list li::before, .plain-list li::before { content: "—"; color: var(--accent-secondary); }

.process-list { border-top: 1px solid var(--line); }
.process-row { display: grid; grid-template-columns: .22fr .8fr 1fr; gap: 28px; padding: 26px 0 30px; border-bottom: 1px solid var(--line); }
.process-number, .role-number { color: var(--accent-secondary); font: 11px/1.4 var(--mono); letter-spacing: .1em; }
.process-row h3 { margin: 0; font-size: 25px; letter-spacing: -.04em; font-weight: 400; }
.process-row p { max-width: 360px; margin: 0; color: var(--muted); line-height: 1.5; }

.role-list { border-top: 1px solid var(--line); }
.role-row { display: grid; grid-template-columns: 1.05fr 1.45fr .72fr; gap: 26px; align-items: start; padding: 21px 0; border-bottom: 1px solid var(--line); }
.role-row h3 { margin: 0; font-size: 20px; letter-spacing: -.035em; font-weight: 400; }
.role-row p { margin: 0; color: var(--muted); line-height: 1.45; font-size: 14px; }
.role-boundary { color: #dbe4ed; font-size: 13px; line-height: 1.45; }
.role-boundary small { display: block; margin-bottom: 6px; color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }

.passport-layout, .memory-layout, .trade-layout, .trial-layout, .trust-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 8vw; align-items: start; }
.passport-sheet { padding: 26px; border: 1px solid var(--line); background: #0b0f13; }
.passport-sheet-top, .passport-sheet-row { display: flex; justify-content: space-between; gap: 20px; }
.passport-sheet-top { padding-bottom: 22px; border-bottom: 1px solid var(--line); color: var(--muted); font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.passport-sheet-status { color: var(--accent-secondary); }
.passport-sheet h3 { margin: 30px 0 4px; font-size: 32px; letter-spacing: -.06em; font-weight: 400; }
.passport-sheet-role { color: var(--accent); font: 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.passport-sheet-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 30px; }
.passport-sheet-cell small { display: block; color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.passport-sheet-cell strong { display: block; margin-top: 7px; color: #e6edf4; font-size: 15px; font-weight: 400; }
.passport-sheet-row { padding-top: 22px; margin-top: 26px; border-top: 1px solid var(--line); color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.passport-copy h3, .memory-copy h3, .trade-copy h3, .trial-copy h3, .trust-copy h3 { margin: 0; max-width: 560px; font-size: clamp(30px, 4vw, 56px); line-height: .96; letter-spacing: -.06em; font-weight: 400; }
.passport-copy p, .memory-copy p, .trade-copy p, .trial-copy p, .trust-copy p { max-width: 450px; color: var(--muted); line-height: 1.55; }
.evidence-line { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding-top: 24px; margin-top: 30px; border-top: 1px solid var(--line); }
.evidence-line div { color: var(--muted); font: 10px/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.evidence-line strong { display: block; margin-top: 6px; color: var(--text); font: 14px/1.3 var(--body); letter-spacing: 0; text-transform: none; font-weight: 400; }

.memory-layout { grid-template-columns: 1.1fr .9fr; }
.memory-mark, .trade-mark { min-height: 250px; padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.memory-mark strong, .trade-mark strong { display: block; max-width: 600px; font-size: clamp(38px, 5vw, 72px); line-height: .92; letter-spacing: -.07em; font-weight: 400; }
.memory-mark strong em, .trade-mark strong em { color: var(--accent); font-style: normal; }
.memory-mark small, .trade-mark small { display: block; margin-top: 32px; color: var(--muted); font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.trade-layout { grid-template-columns: 1fr 1fr; }
.trade-flow { border-top: 1px solid var(--line); }
.trade-step { display: grid; grid-template-columns: 42px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.trade-step span { color: var(--accent-secondary); font: 11px var(--mono); }
.trade-step strong { font-size: 16px; font-weight: 400; }
.trade-step p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; }

.trial-layout { grid-template-columns: 1.05fr .95fr; }
.trial-band { padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trial-band strong { display: block; color: var(--accent); font-size: clamp(30px, 4vw, 52px); line-height: .96; letter-spacing: -.06em; font-weight: 400; }
.trial-band small { display: block; margin-top: 18px; color: var(--muted); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.trust-layout { grid-template-columns: 1.15fr .85fr; }
.plan-rows { border-top: 1px solid var(--line); }
.plan-row { display: grid; grid-template-columns: 1.1fr 1fr 1.2fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.plan-row strong { font-size: 16px; font-weight: 400; }
.plan-row span { color: var(--muted); font-size: 13px; line-height: 1.4; }
.trust-note { padding: 25px; border: 1px solid var(--line); background: rgba(143, 211, 255, .04); }
.trust-note strong { display: block; color: var(--accent-secondary); font: 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.trust-note p { margin: 18px 0 0; color: var(--muted); line-height: 1.55; }

/* Dark direction: enterprise systems engineering, with the instrument as the visual anchor. */
[data-theme="dark"] .utility-bar { display: none; }
[data-theme="dark"] .frame { margin: 0; border: 0; min-height: 100vh; }
[data-theme="dark"] .page-panel { background: #10151b; }
[data-theme="dark"] header { padding-top: 26px; padding-bottom: 26px; border-bottom-color: #171717; }
[data-theme="dark"] .brand { font-size: 15px; letter-spacing: .16em; }
[data-theme="dark"] .brand-sub { color: #6e7883; }
[data-theme="dark"] .nav { font-size: 12px; letter-spacing: .02em; }
[data-theme="dark"] .nav-cta { border-color: var(--accent-secondary); padding: 9px 13px; }
[data-theme="dark"] .nav-cta:hover, [data-theme="dark"] .nav-cta:focus-visible { background: var(--accent-secondary); border-color: var(--accent-secondary); color: #0b0f13; }
[data-theme="dark"] .hero { min-height: min(780px, calc(100vh - 100px)); }
[data-theme="dark"] .hero-copy { padding-top: clamp(68px, 9vw, 124px); padding-bottom: clamp(62px, 8vw, 106px); }
[data-theme="dark"] .eyebrow { color: #8c98a4; }
[data-theme="dark"] .hero-copy h1 { max-width: 670px; font-size: clamp(58px, 7.2vw, 112px); font-weight: 400; line-height: .91; letter-spacing: -.075em; }
[data-theme="dark"] .hero-copy h1 em { color: var(--accent); }
[data-theme="dark"] .hero-description { max-width: 390px; margin-top: 34px; color: #a0a9b3; font: 16px/1.55 var(--body); }
[data-theme="dark"] .button { min-height: 48px; padding: 14px 19px; }
[data-theme="dark"] .button.secondary { border-color: #46515d; color: #dbe4ed; }
[data-theme="dark"] .button.secondary:hover, [data-theme="dark"] .button.secondary:focus-visible { background: #e8f3ff; color: #080b0f; }
[data-theme="dark"] .hero-meta { margin-top: clamp(54px, 7vw, 92px); color: #7b8793; }
[data-theme="dark"] .hero-meta strong { color: #e8eef5; }
[data-theme="dark"] .hero-visual { min-height: inherit; border-left: 1px solid #26313a; background: #0b0f13; }
[data-theme="dark"] .hero-visual img { display: none; }
[data-theme="dark"] .visual-label { left: 28px; bottom: 28px; border-color: #3a4652; color: #84909c; background: #0b0f13; }
[data-theme="dark"] .proof-strip { border-top-color: #171717; }
[data-theme="dark"] .proof-strip > div { border-right-color: #171717; }
[data-theme="dark"] .proof-label, [data-theme="dark"] .section-heading p, [data-theme="dark"] .capability p { color: #84909c; }
[data-theme="dark"] .proof-value { color: #e6edf4; }
[data-theme="dark"] .proof-strip > div:nth-child(3) .proof-label { color: var(--accent-secondary); }
[data-theme="dark"] .section { border-top-color: #171717; }
[data-theme="dark"] .capabilities { border-top-color: #2b343d; }
[data-theme="dark"] .capability { border-bottom-color: #2b343d; }
[data-theme="dark"] .capability:not(:nth-child(3n + 1)) { border-left-color: #2b343d; }
[data-theme="dark"] .theme-switcher { background: #0d1115; border-color: #2d3842; }
[data-theme="dark"] .mobile-menu { background: #0b0f13; }
[data-theme="dark"] .mobile-menu a { border-bottom-color: #2b343d; }
[data-theme="dark"] .capability:nth-child(2) small { color: var(--accent-secondary); }
[data-theme="dark"] #approach .section-heading h2 em { color: var(--accent-secondary); font-style: normal; }

.site-footer {
  min-height: 620px;
  padding: clamp(72px, 9vw, 138px) clamp(24px, 7vw, 110px) 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 92px;
  border-top: 1px solid var(--line);
  background: #111214;
  color: #f5f7fa;
}
.footer-lead { max-width: 850px; }
.footer-lead .eyebrow { color: #8d969f; margin-bottom: 28px; }
[data-theme="dark"] .site-footer .eyebrow::before { background: var(--accent-secondary); }
.footer-lead h2 { margin: 0; max-width: 860px; font-size: clamp(52px, 8vw, 118px); line-height: .9; letter-spacing: -.075em; font-weight: 400; }
.footer-lead h2 em { color: var(--accent); font-style: normal; }
.footer-lead p { max-width: 420px; margin: 30px 0 32px; color: #9ba4ad; font-size: 16px; line-height: 1.55; }
.footer-grid { display: grid; grid-template-columns: 1.35fr repeat(3, 1fr); border-top: 1px solid #30343a; }
.footer-column { min-height: 168px; padding: 22px 22px 0 0; border-right: 1px solid #30343a; }
.footer-column:not(:first-child) { padding-left: 22px; }
.footer-column:last-child { border-right: 0; }
.footer-column small, .footer-bottom { color: #75808a; font: 10px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.footer-brand { font-size: 18px; letter-spacing: .14em; font-weight: 700; }
[data-theme="dark"] .footer-brand { color: var(--accent-secondary); }
.footer-brand-note { max-width: 190px; margin-top: 18px; color: #8d969f; font-size: 13px; line-height: 1.5; }
.footer-column ul { display: grid; gap: 12px; padding: 0; margin: 18px 0 0; list-style: none; }
.footer-column a { color: #dce3e9; font-size: 14px; }
.footer-column a:hover, .footer-column a:focus-visible { color: var(--accent); }
[data-theme="dark"] .site-footer .button:hover, [data-theme="dark"] .site-footer .button:focus-visible { background: var(--accent-secondary); border-color: var(--accent-secondary); color: #0b0f13; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 18px; border-top: 1px solid #30343a; }
.footer-bottom a, .footer-bottom span { color: #75808a; font: 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
[data-theme="light"] .site-footer { background: #151515; border-top-color: #151515; }
[data-theme="light"] .footer-lead h2 em { color: #f2c53d; }
[data-theme="light"] .site-footer .button { background: #f7f5ef; color: #171717; border-color: #f7f5ef; }
[data-theme="light"] .site-footer .button:hover, [data-theme="light"] .site-footer .button:focus-visible { background: #f2c53d; border-color: #f2c53d; }

.menu-lines { display: inline-flex; width: 20px; flex-direction: column; gap: 5px; }
.menu-lines i { display: block; width: 20px; height: 1px; background: currentColor; }
body:has(.mobile-menu.open) .theme-switcher { opacity: 0; pointer-events: none; }

.theme-switcher { position: fixed; right: 22px; bottom: 22px; z-index: 20; display: flex; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); box-shadow: 0 12px 40px rgba(0,0,0,.18); }
.theme-switcher button { border: 0; padding: 10px 13px; border-radius: 999px; background: transparent; color: var(--muted); font-size: 12px; }
.theme-switcher button.active { background: var(--text); color: var(--bg); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.mobile-menu { display: none; }

@media (max-width: 780px) {
  .utility-bar { padding: 14px 18px; }
  .utility-right { gap: 8px; }
  .utility-right span:first-child { display: none; }
  .frame { margin: 0; border-left: 0; border-right: 0; border-bottom: 0; }
  [data-theme="light"] .frame { margin: 0 8px 24px; padding: 7px; border-radius: 22px; }
  .page-panel { min-height: calc(100vh - 100px); }
  header { padding: 18px 20px; }
  .nav { display: none; }
  .menu-button { display: inline-flex; align-items: center; gap: 10px; font-size: 0; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-copy { padding: 70px 24px 38px; }
  h1, [data-theme="light"] h1 { font-size: clamp(52px, 16vw, 88px); }
  .hero-visual { min-height: 460px; order: -1; }
  [data-theme="light"] .hero-visual { min-height: 330px; }
  [data-theme="light"] .hero-visual img { padding: 5% 4%; }
  .hero-meta { margin-top: 48px; gap: 18px; flex-wrap: wrap; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); }
  .proof-strip > div:nth-child(2) { border-right: 0; }
  .proof-strip > div { padding: 18px; border-bottom: 1px solid var(--line); }
  .proof-intro { grid-column: span 2; }
  .section { padding: 76px 24px; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 20px; }
  .capabilities { grid-template-columns: 1fr; }
  .capability:not(:nth-child(3n + 1)) { padding-left: 0; border-left: 0; }
  .capability:nth-child(-n + 3) { border-bottom: 1px solid var(--line); }
  .capability:last-child { border-bottom: 0; }
  [data-theme="dark"] header { border-bottom-color: transparent; padding-top: 22px; padding-bottom: 22px; }
  [data-theme="dark"] .hero { display: flex; flex-direction: column; }
  [data-theme="dark"] .brand-sub { display: none; }
  [data-theme="dark"] .hero-visual { order: -1; min-height: 360px; border-left: 0; }
  [data-theme="dark"] .hero-visual img { display: none; }
  [data-theme="dark"] .hero-passport-stage { inset: 14% 24px 13%; }
  [data-theme="dark"] .hero-passport-role { margin-top: 34px; font-size: 34px; }
  [data-theme="dark"] .hero-passport-access { margin-top: 30px; }
  [data-theme="dark"] .visual-label { left: 20px; bottom: 12px; font-size: 9px; }
  [data-theme="dark"] .hero-copy { padding: 30px 24px 68px; text-align: left; }
  [data-theme="dark"] .eyebrow { justify-content: flex-start; margin-bottom: 24px; }
  [data-theme="dark"] .hero-copy h1 { max-width: 520px; margin: 0; font-size: clamp(52px, 14vw, 82px); line-height: .92; }
  [data-theme="dark"] .hero-description { margin: 28px 0 30px; max-width: 330px; }
  [data-theme="dark"] .actions { justify-content: flex-start; }
  [data-theme="dark"] .hero-meta { justify-content: flex-start; margin-top: 44px; }
  [data-theme="dark"] .proof-strip > div { border-right-color: #171717; }
  [data-theme="dark"] .mobile-menu.open { z-index: 30; padding: 24px 24px 32px; justify-content: flex-start; gap: 0; font-size: 34px; letter-spacing: -.06em; }
  [data-theme="dark"] .mobile-menu .menu-close { margin: 0 0 58px; padding: 0; color: #e5e5e0; font-size: 30px; line-height: 1; }
  [data-theme="dark"] .mobile-menu a { padding: 18px 0 20px; }
  .mobile-menu.open { display: flex; position: fixed; inset: 0; z-index: 10; background: var(--bg); padding: 92px 24px 28px; flex-direction: column; gap: 20px; font-size: 28px; letter-spacing: -.05em; }
  .mobile-menu a { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
  .mobile-menu .menu-close { align-self: flex-end; border: 0; background: transparent; color: var(--muted); font-size: 14px; margin-bottom: 20px; }
  .site-footer { min-height: 720px; padding: 76px 24px 24px; gap: 78px; }
  .footer-lead h2 { font-size: clamp(52px, 15vw, 82px); }
  .footer-lead p { max-width: 330px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-column { min-height: 158px; padding-right: 14px; border-bottom: 1px solid #30343a; }
  .footer-column:not(:first-child) { padding-left: 14px; }
  .footer-column:nth-child(2n) { border-right: 0; }
  .footer-column:nth-child(3), .footer-column:nth-child(4) { padding-top: 20px; border-bottom: 0; }
  .footer-bottom { display: block; }
  .footer-bottom a { display: block; margin-top: 12px; }
  .intake-layout, .passport-layout, .memory-layout, .trade-layout, .trial-layout, .trust-layout { grid-template-columns: 1fr; gap: 42px; }
  .intake-prompt { padding: 0 0 30px; border-right: 0; border-bottom: 1px solid var(--line); }
  .intake-context { padding: 0; }
  .process-row { grid-template-columns: 38px 1fr; gap: 16px; }
  .process-row p { grid-column: 2; }
  .role-row { grid-template-columns: 1fr; gap: 9px; }
  .role-boundary { padding-top: 5px; }
  .passport-layout, .memory-layout, .trade-layout, .trial-layout, .trust-layout { display: grid; }
  .passport-sheet { padding: 20px; }
  .passport-copy { order: -1; }
  .memory-mark, .trade-mark { min-height: 190px; }
  .plan-row { grid-template-columns: 1fr; gap: 6px; }
}