:root {
  --ink: #161a20;
  --ink-soft: #586170;
  --paper: #f6f7f9;
  --paper-deep: #e9edf3;
  --surface: #ffffff;
  --signal: #315bd6;
  --signal-deep: #21449e;
  --signal-soft: #edf2ff;
  --china: #b83a2f;
  --red: var(--signal);
  --line: #cbd1da;
  --acid: #a9baf5;
  --sans: "Commissioner", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --serif: "Literata", "Songti SC", "STSong", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --focus-ring: #315bd6;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: light; -webkit-text-size-adjust: 100%; }
body { margin: 0; overflow-x: clip; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 12px 16px; background: white; color: var(--ink); font: 600 12px var(--mono); }
.skip-link:focus { top: 12px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
:where(a, button, input, select, textarea, [tabindex]):focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.landing-header :where(a, button):focus-visible { outline-color: var(--focus-ring); }
:where(.button, .landing-cta, .commercial-action, .form-row button):active { transform: translateY(1px); }

.landing-header { position: sticky; top: 0; z-index: 40; min-height: 72px; display: grid; grid-template-columns: minmax(210px, 1fr) auto minmax(180px, 1fr); align-items: center; gap: 26px; padding: 0 clamp(20px, 4vw, 64px); background: rgba(255, 255, 255, .94); color: var(--ink); border-bottom: 1px solid var(--line); backdrop-filter: saturate(1.2) blur(18px); isolation: isolate; }
.landing-brand { display: inline-flex; align-items: center; gap: 11px; width: max-content; color: var(--ink); }
.landing-brand-mark { display: block; width: 38px; height: 38px; flex: 0 0 38px; }
.landing-brand-type { display: grid; gap: 4px; line-height: 1; text-transform: uppercase; }
.landing-brand-type strong { color: var(--ink); font: 650 14px/1 var(--sans); letter-spacing: .055em; white-space: nowrap; }
.landing-brand-type small { color: #697383; font: 500 11px/1 var(--mono); letter-spacing: .065em; white-space: nowrap; }
.landing-brand:hover .landing-brand-type strong { color: var(--signal-deep); }
.landing-nav { display: flex; justify-content: center; gap: clamp(20px, 3vw, 40px); }
.landing-nav a, .landing-signin { min-height: 44px; display: inline-flex; align-items: center; font: 500 11px/1 var(--mono); letter-spacing: .035em; text-transform: uppercase; color: #596271; }
.landing-nav a:hover, .landing-signin:hover { color: var(--ink); }
.landing-actions { display: flex; align-items: center; justify-content: flex-end; gap: 16px; }
.landing-cta { min-height: 44px; display: inline-flex; align-items: center; padding: 0 17px; background: var(--ink); color: #fff; font: 700 11px/1 var(--mono); letter-spacing: .045em; text-transform: uppercase; white-space: nowrap; }
.landing-cta:hover { background: var(--signal); }

.language-menu { position: relative; display: inline-flex; }
.language-menu-trigger { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; }
.language-menu-trigger:hover, .language-menu-trigger[aria-expanded="true"] { border-color: var(--ink); background: #eef1f5; }
.language-glyph { font: 600 11px/1 var(--mono); letter-spacing: -.08em; }
.language-popover { position: absolute; top: calc(100% + 8px); right: 0; width: 190px; padding: 7px; background: #ffffff; color: var(--ink); border: 1px solid var(--ink); box-shadow: 0 18px 38px rgba(0,0,0,.2); }
.language-popover[hidden] { display: none; }
.language-popover button { width: 100%; min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 10px; border: 0; background: transparent; color: inherit; cursor: pointer; text-align: left; font: 600 12px/1 var(--mono); }
.language-popover button:hover, .language-popover button.is-active { background: #e7ebf0; }
.language-popover button.is-active::after { content: "●"; color: var(--red); font-size: 11px; }
.language-popover-note { margin: 6px 10px 5px; color: #697383; font: 500 11px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .04em; }

.landing-hero { min-height: min(820px, calc(100dvh - 72px)); display: grid; grid-template-columns: minmax(0, 1fr) minmax(470px, .92fr); gap: clamp(42px, 5vw, 76px); align-items: center; padding: clamp(66px, 7vw, 96px) clamp(20px, 5vw, 78px); border-bottom: 1px solid var(--line); overflow: hidden; background: radial-gradient(circle at 76% 38%, rgba(49,91,214,.10), transparent 33%), var(--paper); }
.hero-copy { max-width: 720px; }
.landing-eyebrow { display: flex; align-items: center; margin: 0 0 20px; color: var(--red); font: 600 11px/1.4 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.landing-hero h1 { margin: 0; max-width: 12ch; font-size: clamp(54px, 5.9vw, 84px); line-height: .94; letter-spacing: -.065em; font-weight: 800; }
.landing-hero h1 em { color: var(--red); font-style: normal; }
.landing-deck { max-width: 650px; margin: 30px 0 0; color: var(--ink-soft); font-size: clamp(17px, 1.7vw, 21px); line-height: 1.55; letter-spacing: -.01em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 34px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--ink); font: 700 11px/1 var(--mono); letter-spacing: .065em; text-transform: uppercase; transition: transform .16s ease, background-color .16s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: var(--signal); border-color: var(--signal); }
.button-secondary:hover { background: white; }
.hero-note { margin: 14px 0 0; color: #697383; font: 500 11px/1.5 var(--mono); }

.signal-window { position: relative; width: 100%; max-width: 690px; justify-self: end; align-self: center; background: #ffffff; border: 1px solid var(--ink); box-shadow: 16px 16px 0 var(--red); }
.signal-window-bar { min-height: 48px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 0 18px; background: var(--ink); color: #d9dee6; font: 500 11px/1 var(--mono); letter-spacing: .08em; }
.signal-window-time { color: var(--acid); }
.signal-lead { padding: 34px 28px 28px; border-bottom: 1px solid var(--ink); }
.signal-label, .signal-type { color: var(--red); font: 700 11px/1 var(--mono); letter-spacing: .09em; }
.signal-lead h2 { max-width: 13ch; margin: 12px 0; font-size: clamp(30px, 3.6vw, 50px); line-height: .98; letter-spacing: -.055em; }
.signal-lead p { max-width: 54ch; margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.signal-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.signal-grid article { min-height: 155px; display: flex; flex-direction: column; padding: 18px; }
.signal-grid article + article { border-left: 1px solid var(--ink); }
.signal-index { margin-bottom: auto; color: #9aa3b1; font: 500 11px var(--mono); }
.signal-type { margin: 24px 0 8px; }
.signal-grid strong { font-size: 15px; line-height: 1.25; }
.signal-grid small { margin-top: 7px; color: #697383; font: 500 11px/1.4 var(--mono); }
.signal-lock { min-height: 38px; display: flex; align-items: center; justify-content: center; gap: 8px; border-top: 1px solid var(--ink); background: var(--paper-deep); font: 600 11px/1 var(--mono); letter-spacing: .06em; }
.signal-lock span { color: var(--red); }

.audience-strip { min-height: 86px; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: clamp(18px, 3vw, 44px); padding: 18px 24px; background: var(--ink); color: #eef1f5; }
.audience-strip span { color: #9299a5; font: 500 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.audience-strip strong { font-size: 13px; font-weight: 600; }
.audience-strip strong::before { content: "/"; margin-right: clamp(18px, 3vw, 44px); color: #5d6572; font-family: var(--mono); }

.landing-section { padding: clamp(72px, 9vw, 132px) clamp(20px, 5vw, 78px); border-bottom: 1px solid var(--ink); }
.section-heading { display: grid; grid-template-columns: minmax(140px, .28fr) minmax(320px, .72fr) minmax(260px, .55fr); gap: 32px; align-items: start; margin-bottom: 52px; }
.section-heading .landing-eyebrow { margin: 8px 0 0; }
.section-heading h2, .method-copy h2 { margin: 0; max-width: 14ch; font-size: clamp(39px, 5vw, 70px); line-height: .98; letter-spacing: -.06em; }
.section-heading > p:last-child { margin: 6px 0 0; color: var(--ink-soft); font-size: 15px; line-height: 1.65; }
.capability-grid { display: grid; grid-template-columns: 1.15fr .85fr .85fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.capability { min-height: 420px; display: flex; flex-direction: column; padding: clamp(24px, 3vw, 40px); border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: #ffffff; }
.capability-featured { background: var(--red); color: white; }
.capability-number { color: #9299a5; font: 500 11px/1 var(--mono); }
.capability-featured .capability-number { color: #a9baf5; }
.capability-kicker { margin: auto 0 12px; font: 700 11px/1 var(--mono); letter-spacing: .09em; }
.capability h3 { margin: 0; max-width: 13ch; font-size: clamp(28px, 3vw, 43px); line-height: 1; letter-spacing: -.045em; }
.capability > p:not(.capability-kicker) { color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.capability-featured > p:not(.capability-kicker) { color: #dfe3ff; }
.mini-brief, .evidence-row { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 22px; border-top: 1px solid currentColor; border-bottom: 1px solid currentColor; }
.mini-brief span, .evidence-row span { padding: 12px 7px; font: 600 11px/1.2 var(--mono); text-align: center; }
.mini-brief span + span, .evidence-row span + span { border-left: 1px solid currentColor; }
.deviation-chart { position: relative; height: 76px; display: flex; align-items: flex-end; gap: 5px; margin-top: 24px; padding-bottom: 10px; border-bottom: 1px solid var(--ink); }
.deviation-chart i { flex: 1; height: 22%; background: #c7cdd7; }
.deviation-chart i:nth-child(2), .deviation-chart i:nth-child(6) { height: 37%; }
.deviation-chart i:nth-child(3), .deviation-chart i:nth-child(7) { height: 53%; }
.deviation-chart i:nth-child(4), .deviation-chart i:nth-child(9) { height: 31%; }
.deviation-chart i:nth-child(8) { height: 84%; background: var(--red); }
.deviation-chart span { position: absolute; left: 0; right: 0; top: 37%; border-top: 1px dashed #9299a8; }
.surface-map { display: grid; grid-template-columns: 1.15fr repeat(4, 1fr); margin-top: 26px; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.surface-map > * { min-height: 172px; display: flex; flex-direction: column; padding: 20px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.surface-map-intro { background: var(--ink); color: white; }
.surface-map-intro span, .surface-map article > span { color: var(--red); font: 600 11px/1 var(--mono); letter-spacing: .08em; }
.surface-map-intro span { color: var(--acid); }
.surface-map strong { margin-top: auto; font-size: 17px; line-height: 1.2; }
.surface-map p { margin: 8px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.5; }

.method-section { display: grid; grid-template-columns: minmax(0, .8fr) minmax(440px, 1.2fr); gap: clamp(50px, 9vw, 150px); background: #eef1f5; }
.method-copy h2 { max-width: 12ch; }
.method-copy > p:not(.landing-eyebrow) { max-width: 55ch; color: var(--ink-soft); font-size: 15px; line-height: 1.65; }
.text-link { display: inline-block; margin-top: 18px; border-bottom: 1px solid; font: 700 11px/1.5 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.method-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.method-steps li { min-height: 128px; display: grid; grid-template-columns: 50px 1fr; gap: 24px; align-items: start; padding: 24px 0; border-bottom: 1px solid var(--ink); }
.method-steps > li > span { color: var(--red); font: 600 11px/1.5 var(--mono); }
.method-steps strong { font-size: 21px; }
.method-steps p { max-width: 58ch; margin: 7px 0 0; color: var(--ink-soft); font-size: 13px; line-height: 1.55; }

.section-heading.compact { grid-template-columns: minmax(140px, .28fr) 1fr; }
.pricing-card { display: grid; grid-template-columns: .85fr 1.1fr .65fr; gap: 36px; align-items: center; padding: clamp(28px, 4vw, 54px); background: var(--ink); color: white; }
.price-label { color: var(--acid); font: 700 11px/1 var(--mono); letter-spacing: .09em; }
.price { margin: 18px 0 8px; font-size: clamp(58px, 7vw, 88px); font-weight: 800; line-height: .86; letter-spacing: -.07em; }
.price small { font: 500 11px/1 var(--mono); letter-spacing: 0; }
.price-copy p, .price-action small { color: #9aa3af; font: 500 11px/1.5 var(--mono); }
.pricing-card ul { margin: 0; padding: 0; list-style: none; }
.pricing-card li { padding: 13px 0; border-top: 1px solid #343a44; font-size: 13px; }
.pricing-card li:last-child { border-bottom: 1px solid #343a44; }
.price-action { display: grid; gap: 12px; }
.button-light { background: var(--acid); color: var(--ink); border-color: var(--acid); }
.button-light:hover { background: white; border-color: white; }
.price-action small { text-align: center; }

.briefing-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(45px, 8vw, 130px); padding: clamp(78px, 10vw, 145px) clamp(20px, 7vw, 110px); background: var(--red); color: white; }
.landing-eyebrow.light { color: #dfe3ff; }
.briefing-section h2 { max-width: 11ch; margin: 0; font-size: clamp(48px, 6vw, 82px); line-height: .92; letter-spacing: -.065em; }
.briefing-section > div > p:last-child { max-width: 52ch; color: #dfe3ff; font-size: 14px; line-height: 1.65; }
.landing-form { align-self: center; }
.form-row { display: grid; grid-template-columns: 1fr auto; border: 1px solid white; }
.form-row input[type="email"] { min-width: 0; min-height: 62px; padding: 0 18px; border: 0; background: transparent; color: white; outline: none; font-size: 16px; }
.form-row input::placeholder { color: #fff; opacity: 1; }
.form-row input:focus { box-shadow: inset 0 0 0 3px rgba(255,255,255,.25); }
.form-row button { padding: 0 22px; border: 0; border-left: 1px solid white; background: white; color: var(--red); font: 700 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; cursor: pointer; }
.form-row button:hover { background: var(--acid); }
.form-row button:disabled { opacity: .65; cursor: wait; }
.waitlist-honeypot { position: absolute; left: -9999px; }
.consent-row { display: flex; align-items: flex-start; gap: 8px; margin-top: 14px; color: #dfe3ff; font: 500 11px/1.5 var(--mono); }
.consent-row input { width: 17px; height: 17px; margin: 0; flex: 0 0 auto; accent-color: var(--acid); }
.consent-row a { color: white; text-decoration: underline; }
.form-feedback { min-height: 20px; margin: 12px 0 0; color: white; font: 600 11px/1.4 var(--mono); }
.form-feedback.is-error { color: #fff08e; }

.landing-footer { min-height: 190px; display: grid; grid-template-columns: 1fr 1fr auto; gap: 36px; align-items: start; padding: 48px clamp(20px, 5vw, 78px); background: var(--ink); color: #c2c8d1; }
.footer-brand { color: white; font: 700 16px/1 var(--sans); letter-spacing: -.02em; }
.footer-brand span { margin-left: 8px; color: #747d8a; font-size: 12px; }
.landing-footer p { margin: 0; max-width: 38ch; color: #808997; font-size: 12px; line-height: 1.5; }
.landing-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; font: 500 11px/1 var(--mono); text-transform: uppercase; }
.landing-footer a:hover { color: white; }

/* Operational intelligence layer: the system model leads; place imagery supplies evidence and context. */
.landing-cta { background: var(--ink); color: #fff; }
.landing-cta:hover { background: var(--signal); color: #fff; }
.landing-hero { grid-template-columns: minmax(380px, .72fr) minmax(520px, 1.28fr); gap: clamp(38px, 5vw, 76px); align-items: end; padding-top: clamp(52px, 6vw, 82px); padding-bottom: clamp(52px, 6vw, 82px); }
.hero-copy { align-self: center; }
.landing-hero h1 { max-width: 9.5ch; font-size: clamp(62px, 6.9vw, 104px); line-height: .9; letter-spacing: -.055em; font-weight: 650; }
.landing-hero h1 em { display: inline-block; margin-top: .04em; padding-bottom: .08em; font-family: inherit; font-weight: 650; font-style: normal; line-height: 1.02; letter-spacing: inherit; }
.landing-deck { max-width: 550px; font-size: clamp(17px, 1.45vw, 20px); line-height: 1.56; }
.hero-illustration { position: relative; width: 100%; min-height: 610px; margin: 0; overflow: hidden; border: 1px solid #aeb5c2; border-radius: 14px; background: var(--signal-soft); box-shadow: 0 24px 70px rgba(35,42,75,.13); }
.hero-illustration::before { content: "LIVE / BEIJING TIME"; position: absolute; z-index: 2; top: 17px; right: 18px; color: var(--signal-deep); font: 700 11px/1 var(--mono); letter-spacing: .08em; }
.hero-illustration::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.56); border-radius: inherit; }
.hero-illustration img { width: 100%; height: 100%; min-height: 610px; display: block; object-fit: cover; object-position: center; filter: none; }
.hero-illustration figcaption { position: absolute; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center; padding: 13px 15px; border-top: 1px solid rgba(79,86,101,.34); background: rgba(255,255,255,.92); backdrop-filter: blur(8px); }
.hero-illustration figcaption span, .hero-illustration figcaption small { font: 600 11px/1.3 var(--mono); letter-spacing: .055em; text-transform: uppercase; }
.hero-illustration figcaption span { color: var(--red); }
.hero-illustration figcaption strong { font-family: var(--sans); font-size: 14px; font-weight: 650; }
.hero-illustration figcaption small { color: #697383; text-align: right; }
.audience-strip { min-height: 66px; }

.capability-grid { grid-template-columns: 1.25fr .875fr .875fr; gap: 0; border: 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.capability { min-height: 560px; display: grid; grid-template-rows: minmax(270px, 1fr) auto; padding: 0; border: 0; border-right: 1px solid var(--ink); border-radius: 0; background: transparent; color: var(--ink); }
.capability:last-child { border-right: 0; }
.capability-featured { background: transparent; color: var(--ink); }
.capability-art { position: relative; min-height: 270px; margin: 0; overflow: hidden; border-bottom: 1px solid var(--ink); background: var(--paper-deep); }
.capability-art img { width: 100%; height: 100%; display: block; object-fit: cover; filter: contrast(1.025) saturate(.64); transition: transform .45s ease; }
.editorial-feature:hover .capability-art img { transform: scale(1.018); }
.capability-art figcaption { position: absolute; left: 10px; bottom: 10px; padding: 7px 8px; background: rgba(255,255,255,.9); color: var(--ink); font: 600 11px/1.3 var(--mono); letter-spacing: .04em; }
.capability-copy { display: flex; min-height: 260px; flex-direction: column; padding: clamp(22px, 2.8vw, 36px); }
.capability-number, .capability-featured .capability-number { color: var(--red); }
.capability-kicker { margin: auto 0 12px; }
.capability h3 { font-family: var(--sans); font-size: clamp(29px, 2.6vw, 42px); font-weight: 650; line-height: .98; letter-spacing: -.045em; }
.capability > p:not(.capability-kicker), .capability-featured > p:not(.capability-kicker), .capability-copy > p:not(.capability-kicker) { color: var(--ink-soft); }

.method-copy { min-width: 0; }
.method-art { position: relative; min-height: 320px; margin: 38px 0 0; overflow: hidden; border: 1px solid var(--ink); background: var(--paper-deep); }
.method-art img { width: 100%; height: 100%; min-height: 320px; display: block; object-fit: cover; filter: contrast(1.025) saturate(.64); }
.method-art figcaption { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between; gap: 14px; padding: 9px 11px; border-top: 1px solid rgba(22,26,32,.35); background: rgba(255,255,255,.92); font: 600 11px/1.3 var(--mono); letter-spacing: .04em; }
.method-art figcaption span { color: var(--red); }
.method-art figcaption small { color: #697383; font: inherit; font-weight: 500; }

.pricing-card { border-top: 2px solid var(--ink); border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); padding-left: 0; padding-right: 0; }
.price-label { color: var(--red); }
.price { font-family: var(--sans); font-weight: 650; }
.price-copy p, .price-action small { color: #697383; }
.pricing-card li { border-color: var(--line); }
.pricing-card li:last-child { border-color: var(--line); }
.button-light { background: var(--ink); border-color: var(--ink); color: #fff; }
.button-light:hover { background: var(--red); border-color: var(--red); }

@media (max-width: 1040px) {
  .landing-header { grid-template-columns: 1fr auto; gap: 0 18px; }
  .landing-nav { grid-column: 1 / -1; grid-row: 2; display: flex; justify-content: flex-start; gap: 0; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; -webkit-overflow-scrolling: touch; }
  .landing-nav a { flex: 0 0 auto; min-height: 44px; padding-right: 22px; }
  .landing-hero { grid-template-columns: 1fr; }
  .hero-illustration { min-height: 520px; }
  .hero-illustration img { min-height: 520px; }
  .section-heading { grid-template-columns: 140px 1fr; }
  .section-heading > p:last-child { grid-column: 2; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .capability-featured { grid-row: auto; grid-column: 1 / -1; }
  .capability-featured .capability-art { min-height: 420px; }
  .surface-map { grid-template-columns: repeat(2, 1fr); }
  .surface-map-intro { grid-column: 1 / -1; min-height: 120px; }
  .method-section { grid-template-columns: 1fr 1fr; gap: 60px; }
  .pricing-card { grid-template-columns: 1fr 1fr; }
  .price-action { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .landing-header { min-height: 64px; padding: 0 14px; gap: 10px; }
  .landing-brand { gap: 7px; }
  .landing-brand-mark { width: 33px; height: 33px; flex-basis: 33px; }
  .landing-brand-type { gap: 3px; }
  .landing-brand-type strong { font-size: 12px; letter-spacing: .055em; }
  .landing-brand-type small { font-size: 11px; letter-spacing: .04em; }
  .landing-signin { display: inline-flex; min-height: 40px; align-items: center; padding: 0 4px; color: var(--ink); }
  .language-menu { display: none; }
  .landing-actions { gap: 8px; }
  .landing-cta { min-height: 40px; padding: 0 11px; }
  .landing-hero { min-height: auto; padding: 54px 18px 62px; gap: 44px; }
  .landing-hero h1 { font-size: clamp(54px, 16vw, 74px); }
  .landing-deck { font-size: 17px; }
  .hero-actions .button { width: 100%; }
  .hero-illustration, .hero-illustration img { min-height: 420px; }
  .hero-illustration figcaption { grid-template-columns: 1fr; gap: 5px; }
  .hero-illustration figcaption small { text-align: left; }
  .audience-strip { justify-content: flex-start; gap: 18px; }
  .audience-strip strong::before { margin-right: 18px; }
  .landing-section { padding: 72px 18px; }
  .section-heading, .section-heading.compact { grid-template-columns: 1fr; gap: 15px; }
  .section-heading > p:last-child { grid-column: auto; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability { min-height: 0; border-right: 0; border-bottom: 1px solid var(--ink); }
  .capability:last-child { border-bottom: 0; }
  .capability-featured { grid-row: auto; }
  .capability-featured .capability-art, .capability-art { min-height: 280px; }
  .capability-copy { min-height: 240px; }
  .surface-map { grid-template-columns: 1fr; }
  .surface-map-intro { grid-column: auto; }
  .method-section { grid-template-columns: 1fr; gap: 52px; }
  .method-steps li { min-height: 112px; }
  .pricing-card { grid-template-columns: 1fr; gap: 28px; }
  .price-action { grid-column: auto; }
  .briefing-section { grid-template-columns: 1fr; padding: 76px 18px; }
  .form-row { grid-template-columns: 1fr; }
  .form-row button { min-height: 52px; border-left: 0; border-top: 1px solid white; }
  .landing-footer { grid-template-columns: 1fr; min-height: 280px; }
  .landing-footer nav { justify-content: flex-start; }
}
@media (max-width: 440px) {
  .landing-brand-type small { display: none; }
  .landing-brand-type strong { max-width: 76px; white-space: normal; line-height: .92; }
  .landing-actions { min-width: 0; gap: 5px; }
  .landing-signin { padding-inline: 7px; }
  .landing-cta { padding-inline: 10px; font-size: 11px; letter-spacing: .035em; }
  .landing-hero h1 { overflow-wrap: anywhere; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Selected-evidence proof: the acquisition bridge between promise and signup. */
.proof-section {
  padding: clamp(70px, 8vw, 112px) clamp(20px, 5vw, 78px);
  background:
    linear-gradient(90deg, transparent 0 49.92%, rgba(22,26,32,.055) 49.92% 50.08%, transparent 50.08%),
    var(--paper-deep);
  border-bottom: 1px solid var(--ink);
}
.proof-section-page { padding-top: clamp(64px, 7vw, 96px); }
.proof-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, .72fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: end;
  max-width: 1440px;
  margin: 0 auto 34px;
}
.proof-heading h2 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(38px, 4.6vw, 68px);
  line-height: .98;
  letter-spacing: -.055em;
}
.proof-heading > p {
  max-width: 650px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.65;
}
.signal-proof {
  max-width: 1440px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid var(--ink);
  box-shadow: 14px 14px 0 var(--red);
}
.signal-proof-head { padding: clamp(26px, 4vw, 52px); border-bottom: 1px solid var(--ink); }
.signal-proof-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 30px;
  color: #687181;
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .065em;
  text-transform: uppercase;
}
.signal-proof-meta span:first-child { color: var(--red); }
.signal-proof-head > p:not(.signal-original) {
  margin: 0 0 12px;
  color: var(--red);
  font: 700 11px/1.4 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.signal-proof h3 {
  max-width: 1100px;
  margin: 0;
  font: 650 clamp(30px, 3.8vw, 56px)/1.04 var(--sans);
  letter-spacing: -.035em;
}
.signal-original {
  max-width: 1000px;
  margin: 17px 0 0;
  color: #687181;
  font-size: 15px;
  line-height: 1.55;
}
.signal-layers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--ink);
}
.signal-layers section { min-height: 210px; padding: 28px clamp(22px, 3vw, 40px); }
.signal-layers section + section { border-left: 1px solid var(--ink); }
.signal-layers span,
.signal-judgment span,
.signal-deviation span {
  display: block;
  margin-bottom: 22px;
  color: var(--red);
  font: 700 11px/1.3 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.signal-layers h4,
.signal-judgment h4 {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.2;
}
.signal-layers p,
.signal-judgment p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}
.signal-judgment { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--ink); }
.signal-judgment section { padding: 30px clamp(22px, 3vw, 40px); }
.signal-judgment section + section { border-left: 1px solid var(--ink); }
.signal-deviation {
  display: grid;
  grid-template-columns: minmax(160px, .25fr) 1fr;
  gap: 28px;
  padding: 25px clamp(22px, 3vw, 40px);
  background: #e7ebf0;
  border-bottom: 1px solid var(--ink);
}
.signal-deviation span { margin: 3px 0 0; }
.signal-deviation p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.6; }
.signal-health {
  display: grid;
  grid-template-columns: minmax(160px, .25fr) 1fr;
  gap: 28px;
  padding: 18px clamp(22px, 3vw, 40px);
  background: #ffffff;
  border-bottom: 1px solid var(--ink);
}
.signal-health span {
  color: #687181;
  font: 700 11px/1.4 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.signal-health p { margin: 0; color: #596271; font: 12px/1.55 var(--mono); }
.signal-proof-foot {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(22px, 3vw, 40px);
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .025em;
}
.signal-proof-foot a { min-height: 44px; display: inline-flex; align-items: center; color: var(--red); text-decoration: underline; text-underline-offset: 4px; }
[data-sample-state="loading"] .signal-proof { opacity: .76; }
[data-sample-state="ready"] .signal-proof { opacity: 1; transition: opacity .25s ease; }

.sample-hero {
  min-height: 640px;
  display: grid;
  align-content: center;
  padding: clamp(74px, 9vw, 132px) clamp(20px, 8vw, 130px);
  background:
    linear-gradient(108deg, rgba(22,26,32,.98) 0 62%, rgba(22,26,32,.68) 62% 100%),
    url("./assets/editorial/great-hall.webp") center/cover;
  color: #f7f8fa;
  border-bottom: 1px solid var(--ink);
}
.sample-hero .landing-eyebrow { color: #7680ff; }
.sample-hero h1 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(52px, 7vw, 96px);
  line-height: .94;
  letter-spacing: -.065em;
}
.sample-hero > p:not(.landing-eyebrow) { max-width: 760px; margin: 28px 0 0; color: #c5cbd5; font-size: clamp(17px, 1.7vw, 21px); line-height: 1.6; }
.sample-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.sample-hero .button-primary { background: #f7f8fa; color: var(--ink); border-color: #f7f8fa; }
.sample-hero .button-secondary { color: #f7f8fa; border-color: #697383; }
.sample-hero .button-secondary:hover { color: var(--ink); background: #f7f8fa; border-color: #f7f8fa; }
.sample-method {
  display: grid;
  grid-template-columns: minmax(0, .86fr) minmax(420px, 1.14fr);
  gap: clamp(44px, 8vw, 120px);
  padding: clamp(74px, 9vw, 128px) clamp(20px, 7vw, 110px);
  border-bottom: 1px solid var(--ink);
}
.sample-method-copy h2,
.sample-api h2,
.sample-close h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(38px, 4.8vw, 68px);
  line-height: .98;
  letter-spacing: -.055em;
}
.sample-method-copy > p:last-child,
.sample-api > div > p {
  max-width: 630px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.65;
}
.sample-method ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.sample-method li { display: grid; grid-template-columns: 42px 1fr; gap: 20px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.sample-method li > span { color: var(--red); font: 700 11px/1.4 var(--mono); }
.sample-method li strong { display: block; margin-bottom: 6px; font-size: 15px; }
.sample-method li p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.6; }
.sample-personas {
  display: grid;
  grid-template-columns: minmax(280px, .65fr) minmax(0, 1.35fr);
  gap: clamp(42px, 7vw, 110px);
  padding: clamp(74px, 9vw, 128px) clamp(20px, 7vw, 110px);
  background: var(--paper-deep);
  border-bottom: 1px solid var(--ink);
}
.sample-personas h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(38px, 4.8vw, 68px);
  line-height: .98;
  letter-spacing: -.055em;
}
.sample-persona-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.sample-persona-grid a { min-height: 210px; display: flex; flex-direction: column; padding: 25px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.sample-persona-grid a:hover { background: #ffffff; }
.sample-persona-grid span { color: var(--red); font: 700 11px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.sample-persona-grid strong { margin-top: auto; font-size: 20px; }
.sample-persona-grid small { max-width: 31ch; margin-top: 8px; color: var(--ink-soft); font-size: 13px; line-height: 1.5; }
.sample-api {
  display: grid;
  grid-template-columns: minmax(320px, .7fr) minmax(0, 1.3fr);
  gap: clamp(42px, 7vw, 110px);
  align-items: center;
  padding: clamp(74px, 9vw, 128px) clamp(20px, 7vw, 110px);
  background: #161a20;
  color: #f7f8fa;
}
.sample-api .landing-eyebrow { color: #7680ff; }
.sample-api > div > p { color: #aab1bc; }
.sample-api .text-link { display: inline-flex; margin-top: 24px; color: var(--acid); }
.sample-api pre {
  max-height: 540px;
  margin: 0;
  overflow: auto;
  padding: clamp(22px, 3vw, 38px);
  background: #0d1015;
  color: #a9baf5;
  border: 1px solid #474e5a;
  font: 12px/1.75 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.sample-close {
  padding: clamp(74px, 9vw, 122px) clamp(20px, 8vw, 130px);
  background: var(--red);
  color: white;
}
.sample-close > p:not(.landing-eyebrow) { max-width: 680px; margin: 24px 0 28px; font-size: 16px; line-height: 1.65; }
.sample-close .button-light { background: white; color: var(--ink); border-color: white; }

@media (max-width: 900px) {
  .proof-heading,
  .sample-method,
  .sample-personas,
  .sample-api { grid-template-columns: 1fr; }
  .signal-layers { grid-template-columns: 1fr; }
  .signal-layers section { min-height: 0; }
  .signal-layers section + section { border-left: 0; border-top: 1px solid var(--ink); }
  .signal-deviation,
  .signal-health { grid-template-columns: 1fr; gap: 4px; }
  .sample-method { gap: 50px; }
}

@media (max-width: 640px) {
  .proof-section { padding: 62px 18px 74px; background: var(--paper-deep); }
  .proof-heading { margin-bottom: 24px; }
  .proof-heading h2 { font-size: 40px; }
  .signal-proof { box-shadow: 7px 7px 0 var(--red); }
  .signal-proof-head { padding: 24px 20px; }
  .signal-proof h3 { font-size: 32px; }
  .signal-judgment { grid-template-columns: 1fr; }
  .signal-judgment section + section { border-left: 0; border-top: 1px solid var(--ink); }
  .signal-proof-foot { align-items: flex-start; flex-direction: column; padding: 16px 20px; }
  .sample-hero { min-height: 590px; padding: 72px 18px; background-position: 65% center; }
  .sample-hero h1 { font-size: 52px; }
  .sample-method,
  .sample-personas,
  .sample-api,
  .sample-close { padding: 68px 18px; }
  .sample-method { grid-template-columns: 1fr; }
  .sample-method-copy h2,
  .sample-api h2,
  .sample-close h2 { font-size: 42px; }
  .sample-persona-grid { grid-template-columns: 1fr; }
  .sample-api pre { font-size: 11px; }
}