:root {
  --ink: #071321;
  --ink-soft: #0d2136;
  --steel: #28455f;
  --steel-light: #3a617e;
  --signal: #5fb6d9;
  --signal-dark: #247b9d;
  --paper: #f5f8fa;
  --white: #ffffff;
  --muted: #617589;
  --line: #d8e2e9;
  --success: #58caa1;
  --shadow: 0 28px 65px -38px rgba(7, 19, 33, 0.48), 0 14px 30px -24px rgba(7, 19, 33, 0.34);
  --max: 1180px;
  --narrow: 790px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 17px; line-height: 1.65; }
a { color: inherit; }
a:hover { text-decoration-thickness: 2px; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }

.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 10px 14px; color: var(--white); background: var(--ink); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.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; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(245, 248, 250, 0.96); border-bottom: 1px solid rgba(40, 69, 95, 0.18); backdrop-filter: blur(16px); }
.nav-shell { width: min(calc(100% - 40px), var(--max)); min-height: 78px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 760; letter-spacing: -0.03em; text-decoration: none; }
.brand-mark { width: 29px; height: 29px; fill: var(--signal-dark); }
.nav-menu { display: flex; align-items: center; gap: 28px; }
.nav-menu > a:not(.button) { color: #314a60; font-size: 14px; font-weight: 650; text-decoration: none; }
.nav-menu > a:not(.button):hover { color: var(--ink); }
.nav-toggle { display: none; width: 46px; height: 46px; padding: 12px; background: var(--white); border: 1px solid var(--line); }
.nav-toggle > span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 5px 0; background: var(--ink); }

.section-shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.section-shell.narrow { max-width: var(--narrow); }
.hero { min-height: 720px; padding: 108px 0 98px; display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(390px, 0.94fr); gap: 72px; align-items: center; }
.hero-copy { max-width: 650px; }
.hero-visual img { width: 100%; height: auto; max-height: 28rem; object-fit: contain; border-radius: .25rem; opacity: .92; }
.hero-visual { display: flex; align-items: center; justify-content: center; }
.eyebrow, .section-label, .definition-index, .pipeline-header, .pipeline-output, .steps article > span, .use-case-grid article > span, .updated { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 12px; font-weight: 750; letter-spacing: 0.13em; text-transform: uppercase; }
.eyebrow, .section-label { margin: 0 0 20px; color: var(--signal-dark); }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { max-width: 760px; margin: 0; font-size: clamp(2.55rem, 5.4vw, 4.9rem); line-height: 0.99; letter-spacing: -0.055em; }
h2 { margin: 0; font-size: clamp(2rem, 4.2vw, 3.45rem); line-height: 1.04; letter-spacing: -0.045em; }
h3 { margin: 0; font-size: 1.2rem; line-height: 1.25; letter-spacing: -0.02em; }
.lede { max-width: 700px; margin: 28px 0 0; color: #435d73; font-size: clamp(1.08rem, 2vw, 1.3rem); line-height: 1.6; }
.button-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 36px; }
.button-row.centered { justify-content: center; }
.button { min-height: 48px; padding: 12px 20px; display: inline-flex; align-items: center; justify-content: center; color: var(--white); background: var(--ink); border: 1px solid var(--ink); border-radius: 3px; font-size: 15px; font-weight: 750; line-height: 1.2; text-decoration: none; cursor: pointer; transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease; }
.button:hover { background: #143450; border-color: #143450; transform: translateY(-1px); }
.button-small { min-height: 40px; padding: 9px 15px; font-size: 14px; }
.button-ghost { color: var(--ink); background: transparent; border-color: #91a6b6; }
.button-ghost:hover { color: var(--white); background: var(--ink); border-color: var(--ink); }
.microcopy { margin: 16px 0 0; color: var(--muted); font-size: 13px; }

.pipeline-card { color: #dbe6ed; background: var(--ink-soft); border: 1px solid var(--steel); box-shadow: var(--shadow); }
.pipeline-header { padding: 15px 18px; display: flex; justify-content: space-between; color: #8ea6b8; border-bottom: 1px solid var(--steel); }
.status { color: var(--success); }
.status i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; background: var(--success); border-radius: 50%; }
.pipeline { margin: 0; padding: 22px; list-style: none; }
.pipeline li { min-height: 88px; padding: 15px 16px; display: grid; grid-template-columns: 42px 1fr; align-items: center; gap: 12px; background: #112a43; border: 1px solid var(--steel); }
.pipeline li + li { margin-top: 12px; }
.pipeline li > span { color: var(--signal); font: 700 13px ui-monospace, monospace; }
.pipeline strong, .pipeline small { display: block; }
.pipeline strong { color: var(--white); font-size: 16px; }
.pipeline small { margin-top: 2px; color: #93a9b9; font-size: 13px; }
.pipeline-output { padding: 17px 20px; display: flex; align-items: center; justify-content: space-between; gap: 14px; color: var(--signal); background: #091827; border-top: 1px solid var(--steel); }
.pipeline-output code { color: #c3d4df; font-size: 11px; text-transform: none; letter-spacing: 0; }

.problem-section { padding: 110px 0; color: #e7eff3; background: var(--ink); }
.problem-section .section-label { color: var(--signal); }
.problem-section h2 { max-width: 690px; }
.problem-section > div > p:not(.section-label) { max-width: 700px; margin: 28px 0 0; color: #a9bdcc; font-size: 19px; }
.problem-grid { margin-top: 58px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--steel); border-bottom: 1px solid var(--steel); }
.problem-grid article { padding: 30px 25px 34px 0; }
.problem-grid article + article { padding-left: 25px; border-left: 1px solid var(--steel); }
.problem-grid span { color: var(--signal); font: 700 12px ui-monospace, monospace; }
.problem-grid h3 { margin-top: 34px; color: var(--white); }
.problem-grid p { margin: 12px 0 0; color: #9db1c0; font-size: 15px; }

.definition-section { padding: 112px 0; display: grid; grid-template-columns: 180px 1fr; gap: 56px; border-bottom: 1px solid var(--line); }
.definition-index { color: var(--signal-dark); }
.definition-section p { margin: 26px 0 20px; color: #425d74; font-size: 20px; }
.text-link { color: var(--signal-dark); font-weight: 750; text-underline-offset: 4px; }
.text-link.light { color: #89d1ec; }

.capabilities { padding: 110px 0; }
.capabilities h2 { max-width: 700px; }
.capability-grid { margin-top: 55px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.capability-grid article { min-height: 260px; padding: 28px; background: var(--white); border: 1px solid var(--line); box-shadow: 0 16px 36px -32px rgba(7, 19, 33, 0.5); }
.capability-grid h3 { margin-top: 36px; }
.capability-grid p { margin: 12px 0 0; color: var(--muted); font-size: 15px; }
.icon-box { width: 42px; height: 42px; display: grid; place-items: center; color: var(--ink); background: #d9edf5; border: 1px solid #b7dbe9; font: 800 12px ui-monospace, monospace; }

.boundary-section { padding: 100px 0; color: var(--white); background: var(--ink-soft); border-top: 1px solid var(--steel); border-bottom: 1px solid var(--steel); }
.boundary-section .section-label { color: var(--signal); }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.boundary-grid p:not(.section-label) { margin: 8px 0 24px; color: #aec0cc; }
.final-cta { padding: 120px 0; text-align: center; }
.final-cta h2 { max-width: 700px; margin-inline: auto; }
.final-cta > p:not(.section-label) { max-width: 650px; margin: 24px auto 0; color: var(--muted); font-size: 19px; }

.page-hero { padding: 112px 0 82px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(2.55rem, 6vw, 4.5rem); }
.steps { padding: 85px 0 110px; }
.steps article { padding: 34px 0; display: grid; grid-template-columns: 145px 1fr; column-gap: 28px; border-top: 1px solid var(--line); }
.steps article:last-child { border-bottom: 1px solid var(--line); }
.steps article > span { grid-row: 1 / 3; color: var(--signal-dark); }
.steps h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); }
.steps p { margin: 12px 0 0; color: var(--muted); }

.use-case-grid { padding: 84px 0 105px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.use-case-grid article { min-height: 330px; padding: 30px; display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); }
.use-case-grid article > span { color: var(--signal-dark); }
.use-case-grid h2 { margin-top: 52px; font-size: 2rem; }
.use-case-grid p { color: var(--muted); }
.use-case-grid small { margin-top: auto; padding-top: 26px; color: #45657e; font: 700 12px ui-monospace, monospace; text-transform: uppercase; letter-spacing: 0.06em; border-top: 1px solid var(--line); }

.prose { padding: 72px 0 115px; }
.prose h2 { margin-top: 55px; font-size: 2rem; letter-spacing: -0.025em; }
.prose h2:first-of-type { margin-top: 16px; }
.prose p { margin: 18px 0 0; color: #405a70; }
.prose a { color: var(--signal-dark); font-weight: 700; }
.updated { color: var(--muted); }

.form-intro { border-bottom: 0; padding-bottom: 48px; }
.form-shell { padding-bottom: 115px; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(250px, 0.55fr); gap: 28px; }
.form-shell form, .form-shell aside { padding: 32px; background: var(--white); border: 1px solid var(--line); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.form-grid label { display: flex; flex-direction: column; color: #273f54; font-size: 14px; font-weight: 720; }
.form-grid label:nth-child(4) { grid-column: 1 / -1; }
.form-grid label span { color: var(--muted); font-weight: 500; }
input, textarea { width: 100%; margin-top: 7px; padding: 12px 13px; color: var(--ink); background: var(--white); border: 1px solid #9db0be; border-radius: 0; }
input:focus, textarea:focus { border-color: var(--signal-dark); outline: 3px solid rgba(95, 182, 217, 0.3); outline-offset: 0; }
textarea { resize: vertical; }
.consent { margin: 22px 0; display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; color: #405a70; font-size: 14px; font-weight: 500; }
.consent input { width: 20px; height: 20px; margin: 2px 0 0; }
.consent a { color: var(--signal-dark); }
.honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-shell aside ol { margin: 30px 0; padding: 0; list-style: none; }
.form-shell aside li { padding: 18px 0; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
.form-shell aside li span { display: block; margin-bottom: 5px; color: var(--signal-dark); font: 700 12px ui-monospace, monospace; }

.status-page { min-height: 650px; padding: 130px 0; display: flex; flex-direction: column; justify-content: center; }
.status-page h1 { max-width: 760px; font-size: clamp(2.5rem, 6vw, 4.3rem); }
.status-page > p:not(.eyebrow) { max-width: 680px; margin: 28px 0 0; color: var(--muted); font-size: 19px; }

.site-footer { padding: 56px 0; color: #9fb2c0; background: #050e18; border-top: 1px solid var(--steel); }
.footer-grid { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; display: grid; grid-template-columns: 1fr auto; gap: 48px; }
.brand-footer { margin-bottom: 24px; color: var(--white); }
.footer-grid p { margin: 5px 0; font-size: 13px; }
.footer-grid nav { display: grid; grid-template-columns: repeat(2, auto); align-content: start; gap: 10px 26px; }
.footer-grid nav a { color: #c0ced7; font-size: 13px; text-underline-offset: 4px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}

@media (max-width: 900px) {
  .hero { min-height: auto; padding: 80px 0; grid-template-columns: 1fr; gap: 54px; }
  .pipeline-card { max-width: 620px; }
  .problem-grid { grid-template-columns: 1fr; }
  .problem-grid article, .problem-grid article + article { padding: 24px 0; border-left: 0; border-top: 1px solid var(--steel); }
  .problem-grid article:first-child { border-top: 0; }
  .problem-grid h3 { margin-top: 14px; }
  .form-shell { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav-shell { min-height: 70px; }
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; top: 70px; left: 0; right: 0; padding: 20px; display: none; align-items: stretch; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px -25px rgba(7, 19, 33, 0.55); }
  .nav-menu[data-open="true"] { display: flex; }
  .nav-menu > a:not(.button) { min-height: 48px; display: flex; align-items: center; border-bottom: 1px solid var(--line); }
  .nav-menu .button { margin-top: 16px; }
  h1 { font-size: clamp(2.55rem, 13vw, 3.8rem); }
  .hero { padding: 62px 0 70px; gap: 42px; }
  .problem-section, .capabilities, .boundary-section { padding: 78px 0; }
  .definition-section { padding: 78px 0; grid-template-columns: 1fr; gap: 24px; }
  .capability-grid, .use-case-grid, .boundary-grid { grid-template-columns: 1fr; }
  .capability-grid article { min-height: 220px; }
  .final-cta { padding: 85px 0; }
  .page-hero { padding: 72px 0 58px; }
  .steps { padding: 60px 0 80px; }
  .steps article { grid-template-columns: 1fr; }
  .steps article > span { grid-row: auto; margin-bottom: 18px; }
  .use-case-grid { padding: 60px 0 80px; }
  .use-case-grid article { min-height: 300px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid label:nth-child(4) { grid-column: auto; }
  .form-shell form, .form-shell aside { padding: 22px; }
  .status-page { min-height: 560px; padding: 90px 0; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 440px) {
  .section-shell, .nav-shell, .footer-grid { width: min(calc(100% - 28px), var(--max)); }
  .button-row { align-items: stretch; flex-direction: column; }
  .button-row .button { width: 100%; }
  .pipeline { padding: 14px; }
  .pipeline-output { align-items: flex-start; flex-direction: column; }
}