:root {
    --paper: #efeee8;
    --paper-bright: #faf9f5;
    --ink: #121820;
    --black: #080b0e;
    --navy: #07162e;
    --text-muted: #515d66;
    --line: #c0c6c7;
    --cyan: #00bfd0;
    --cyan-on-light: #006873;
    --content-width: 1200px;
    --corner: 2px;
    --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 18px; line-height: 1.55; }
img { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, figure { margin-top: 0; }
h1, h2, h3 { line-height: 1.03; letter-spacing: -.045em; }
h1 { max-width: 11ch; margin-bottom: 1.5rem; font-size: clamp(2.6rem, 5.2vw, 4rem); }
h2 { max-width: 16ch; margin-bottom: 1.4rem; font-size: clamp(2.3rem, 4.6vw, 4rem); }
h3 { margin-bottom: .7rem; font-size: 1.25rem; }
p { max-width: 68ch; }
button, input, select, textarea { font: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
.skip-link { position: absolute; left: -10000px; top: auto; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 10; padding: .65rem 1rem; background: var(--cyan); color: var(--black); }
.container { width: min(calc(100% - 6rem), var(--content-width)); margin-inline: auto; }
.section { padding-block: clamp(4rem, 7vw, 5rem); }
.section-label, .eyebrow, .credibility, .mechanism figcaption, .prototype-note, .form-note, .image-credit { font-family: var(--mono); font-size: .7rem; letter-spacing: .055em; }
.section-label, .eyebrow { margin-bottom: 1.25rem; color: var(--cyan-on-light); text-transform: uppercase; }
.section-heading { margin-bottom: 3.25rem; }
.section-intro { max-width: 66ch; color: var(--text-muted); }

.site-header { position: relative; z-index: 2; border-bottom: 1px solid #29323a; background: var(--black); color: var(--paper-bright); }
.header-inner { display: flex; min-height: 72px; align-items: center; justify-content: space-between; gap: 2rem; }
.wordmark { display: inline-flex; align-items: center; gap: .65rem; font-size: 1.1rem; font-weight: 700; letter-spacing: -.03em; text-decoration: none; }
.wordmark-mark { display: grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid var(--cyan); color: var(--cyan); font-family: var(--mono); font-size: .85rem; }
.site-header nav, .site-footer nav { display: flex; align-items: center; gap: 1.35rem; font-family: var(--mono); font-size: .69rem; letter-spacing: .025em; }
.site-header nav a, .site-footer nav a { text-decoration: none; }
.site-header nav a:hover, .site-footer nav a:hover, .text-link:hover { color: var(--cyan); }
.nav-cta { min-height: 44px; display: inline-flex; align-items: center; border: 1px solid var(--cyan); padding: .55rem .8rem; color: var(--cyan); }

.hero { display: grid; min-height: 690px; grid-template-columns: 45% 55%; background: var(--black); color: var(--paper-bright); }
.hero-copy { display: flex; min-width: 0; align-items: center; }
.hero-copy-inner { width: min(calc(100% - 6rem), 510px); margin-inline: auto; padding-block: 5rem; }
.hero .eyebrow { color: var(--cyan); }
.hero-lede { max-width: 42ch; margin-bottom: 1.8rem; color: #d2d7d9; }
.actions { display: flex; align-items: center; gap: 1.4rem; margin-bottom: 2rem; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; border: 0; border-radius: var(--corner); padding: .75rem 1rem; font-family: var(--mono); font-size: .72rem; font-weight: 700; letter-spacing: .02em; text-decoration: none; cursor: pointer; }
.button-primary { background: var(--cyan); color: var(--black); }
.button-primary:hover { background: #64e6ef; }
.text-link { font-family: var(--mono); font-size: .72rem; font-weight: 700; text-decoration: none; }
.credibility { max-width: 60ch; margin-bottom: 0; color: #aab5bb; line-height: 1.55; }
.hero-image { position: relative; min-width: 0; margin: 0; overflow: hidden; background: var(--navy); }
.hero-image::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7, 22, 46, .22), transparent 40%); content: ""; pointer-events: none; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; object-position: 65% 50%; filter: saturate(.62) contrast(1.07); }

.value { background: var(--paper-bright); }
.supporting-line { margin-top: 1.5rem; font-weight: 700; }
.standards-line { max-width: 72ch; margin: 1.25rem 0 0; color: var(--text-muted); font-size: .82rem; }
.standards-line a { color: var(--cyan-on-light); font-weight: 700; }
.benefit-grid, .product-capabilities { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.benefit-grid article, .product-capabilities article { padding: 2rem 2rem 2rem 0; }
.benefit-grid article + article, .product-capabilities article + article { border-left: 1px solid var(--line); padding-left: 2rem; }
.benefit-grid p, .product-capabilities p { margin-bottom: 0; color: var(--text-muted); font-size: .95rem; }

.method { background: var(--paper); }
.method-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(330px, .8fr); gap: clamp(3rem, 8vw, 7rem); align-items: start; }
.method-list { margin: 0; padding: 0; list-style: none; counter-reset: method; }
.method-list li { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; border-top: 1px solid var(--line); padding: 1.35rem 0; counter-increment: method; }
.method-list li::before { content: "0" counter(method); color: var(--cyan-on-light); font: .75rem/1.5 var(--mono); }
.method-list h3 { margin-bottom: .45rem; }
.method-list p { margin-bottom: 0; color: var(--text-muted); }
.mechanism { position: sticky; top: 2rem; margin: 0; border: 1px solid #31435a; background: var(--navy); box-shadow: 0 1.25rem 3rem rgba(7, 22, 46, .12); color: var(--paper-bright); }
.mechanism figcaption { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin: 0; border-bottom: 1px solid #31435a; padding: 1rem 1.25rem; color: var(--paper-bright); text-transform: uppercase; }
.mechanism figcaption span:last-child { color: #8197a6; font-size: .6rem; white-space: nowrap; }
.mechanism-stage { padding: 1.5rem; }
.mechanism-flow { margin: 0; padding: 0; list-style: none; }
.mechanism-flow li { position: relative; display: grid; grid-template-columns: 2rem minmax(0, 1fr); gap: .85rem; padding-bottom: .85rem; }
.mechanism-flow li:not(:last-child)::before { position: absolute; top: 2rem; bottom: 0; left: calc(1rem - .5px); width: 1px; background: #587088; content: ""; }
.flow-card { min-width: 0; border: 1px solid #405973; padding: .85rem 1rem .95rem; background: #0c203c; }
.flow-step { position: relative; z-index: 1; display: grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid #587088; border-radius: 50%; background: var(--navy); color: #a9bac5; font: .62rem/1 var(--mono); }
.mechanism-flow strong, .flow-phase, .flow-description, .production-boundary strong, .production-boundary span { display: block; }
.flow-phase { margin-bottom: .35rem; color: #8fa6b5; font: .57rem/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.mechanism-flow strong, .production-boundary strong { margin-bottom: .35rem; line-height: 1.2; }
.flow-description, .production-boundary span { color: #b4c4cf; font-size: .82rem; line-height: 1.4; }
.mechanism-flow .flow-decoy .flow-card, .mechanism-flow .flow-decoy .flow-step { border-color: var(--cyan); }
.mechanism-flow .flow-decoy .flow-step { color: var(--cyan); }
.mechanism-flow .flow-decoy .flow-phase { color: var(--cyan); }
.mechanism-flow .flow-output { padding-bottom: 0; }
.mechanism-flow .flow-output .flow-card { border-color: var(--paper-bright); background: var(--paper-bright); color: var(--ink); }
.mechanism-flow .flow-output .flow-phase { color: var(--cyan-on-light); }
.mechanism-flow .flow-output .flow-description { color: var(--text-muted); }
.production-separator { display: flex; align-items: center; gap: .75rem; margin: 1.35rem 0 .85rem; color: #a9bac5; font: .6rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.production-separator::before, .production-separator::after { height: 1px; flex: 1; background: #587088; content: ""; }
.production-boundary { border: 1px dashed #738393; padding: .85rem 1rem; color: #d4dde1; }
.boundary-note { margin: 2.5rem 0 0; border-left: 3px solid var(--cyan-on-light); padding-left: 1rem; color: var(--text-muted); }
.boundary-note strong { color: var(--ink); }

.product { background: var(--black); color: var(--paper-bright); }
.product .section-label { color: var(--cyan); }
.product .section-intro, .product-capabilities p { color: #b7c0c5; }
.product-capabilities { border-color: #3d464b; }
.product-capabilities article + article { border-color: #3d464b; }
.prototype-note { margin: 1.5rem 0 0; color: #9fabaf; }

.fit { background: var(--paper-bright); }
.fit-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(3rem, 8vw, 7rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 1.35rem 2.5rem 1.35rem 0; font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; right: .25rem; color: var(--cyan-on-light); content: "+"; font-family: var(--mono); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { margin: -.35rem 0 1.4rem; color: var(--text-muted); }

.experience { background: var(--navy); color: var(--paper-bright); }
.experience-layout { display: grid; grid-template-columns: .35fr 1fr; gap: 3rem; }
.experience .section-label { color: var(--cyan); }
.experience-copy { max-width: 62ch; margin-bottom: 0; color: #c5d0d5; font-size: 1.08rem; }

.briefing { background: var(--paper); }
.briefing-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem, 8vw, 7rem); align-items: start; }
.stage-note { border-left: 3px solid var(--cyan-on-light); padding-left: 1rem; font-weight: 700; }
.briefing-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; border-top: 3px solid var(--ink); padding-top: 1.5rem; }
.field { display: grid; gap: .4rem; }
.field-full { grid-column: 1 / -1; }
.briefing-form label { font-size: .78rem; font-weight: 700; }
.briefing-form label span { color: var(--cyan-on-light); }
.briefing-form label small { color: var(--text-muted); font-weight: 400; }
.briefing-form input, .briefing-form select, .briefing-form textarea { width: 100%; min-height: 46px; border: 1px solid #8c9699; border-radius: var(--corner); background: var(--paper-bright); color: var(--ink); padding: .65rem .75rem; }
.briefing-form textarea { min-height: 120px; resize: vertical; }
.briefing-form .button { width: 100%; }
.form-note { margin-bottom: 0; color: var(--text-muted); line-height: 1.5; }
.frc-captcha { min-height: 48px; }

.site-footer { border-top: 1px solid #2a3339; padding-block: 2.5rem; background: var(--black); color: var(--paper-bright); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr auto; gap: 2rem; align-items: end; }
.footer-grid > div > p { margin: .8rem 0 0; color: #aeb8bd; font-size: .82rem; }
.image-credit { margin: 0; color: #aeb8bd; line-height: 1.6; }
.image-credit span { color: #7f8b91; }
.site-footer nav { justify-content: flex-end; }

.privacy-page { min-height: 70vh; padding-block: 5rem; background: var(--paper-bright); }
.narrow { max-width: 780px; }
.privacy-page h1 { max-width: none; color: var(--ink); }
.privacy-page h2 { max-width: none; margin-top: 2.2rem; font-size: 1.5rem; }
.back-link { margin-top: 3rem; font-family: var(--mono); font-size: .75rem; }

@media (max-width: 980px) {
    .site-header nav a:not(.nav-cta) { display: none; }
    .hero { grid-template-columns: 1fr; }
    .hero-copy-inner { width: min(calc(100% - 6rem), var(--content-width)); }
    .hero-image { min-height: 430px; }
    .method-layout, .fit-layout, .briefing-grid { grid-template-columns: 1fr; gap: 3rem; }
    .mechanism { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .site-footer nav { grid-column: 1 / -1; justify-content: flex-start; }
}

@media (max-width: 680px) {
    body { font-size: 16px; }
    .container, .hero-copy-inner { width: min(calc(100% - 3rem), var(--content-width)); }
    .header-inner { min-height: 64px; gap: .75rem; }
    .nav-cta { padding-inline: .6rem; font-size: .62rem; }
    .hero { min-height: 0; }
    .hero-copy-inner { padding-block: 4rem; }
    .hero-image { min-height: 300px; }
    .actions { align-items: flex-start; flex-direction: column; }
    .benefit-grid, .product-capabilities, .experience-layout, .footer-grid { grid-template-columns: 1fr; }
    .benefit-grid article, .product-capabilities article { padding: 1.5rem 0; }
    .benefit-grid article + article, .product-capabilities article + article { border-top: 1px solid var(--line); border-left: 0; padding-left: 0; }
    .product-capabilities article + article { border-color: #3d464b; }
    .method-list li { grid-template-columns: 2.4rem 1fr; }
    .mechanism-stage { padding: 1.25rem; }
    .experience-layout { gap: 1rem; }
    .briefing-form { grid-template-columns: 1fr; }
    .field, .field-full { grid-column: 1; }
    .site-footer nav { display: grid; grid-column: 1; justify-content: start; }
}

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