:root {
  --navy: #061528;
  --navy-deep: #030c17;
  --navy-soft: #0b2038;
  --panel: #0d2742;
  --azure: #0ea5e9;
  --sky: #38bdf8;
  --deep-blue: #0369a1;
  --operational: #10b981;
  --white: #ffffff;
  --off-white: #f1f5f9;
  --paper: #f5f8fb;
  --ink: #0f172a;
  --text: #d8e4ef;
  --muted: #9fb2c5;
  --line: rgba(148, 184, 211, 0.2);
  --light-line: #d9e4ec;
  --shadow: 0 26px 70px rgba(0, 12, 28, 0.28);
  --radius: 1.15rem;
  --shell: min(1180px, calc(100% - 2rem));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--navy);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
sup { font-size: 0.48em; vertical-align: super; line-height: 0; }
.shell { width: var(--shell); margin-inline: auto; }
.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; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: -5rem; padding: .75rem 1rem; color: var(--navy); background: var(--white); border-radius: .5rem; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  border-bottom: 1px solid transparent;
  background: rgba(6, 21, 40, .86);
  backdrop-filter: blur(16px);
  transition: border-color .2s ease, background .2s ease;
}
.site-header.is-scrolled { border-color: var(--line); background: rgba(6, 21, 40, .97); }
.header-inner { min-height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand-lockup { display: inline-flex; align-items: baseline; gap: .72rem; text-decoration: none; line-height: 1; white-space: nowrap; }
.brand-lockup strong { color: var(--white); font-size: 1.1rem; font-weight: 850; letter-spacing: -.035em; }
.brand-lockup span { color: var(--azure); font-size: .92rem; font-weight: 650; letter-spacing: .14em; }
.primary-nav { display: flex; align-items: center; gap: 1.5rem; }
.primary-nav a { color: #bfd0df; text-decoration: none; font-size: .88rem; font-weight: 650; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--white); }
.primary-nav .nav-cta { padding: .58rem .9rem; color: var(--sky); border: 1px solid rgba(56, 189, 248, .45); border-radius: .55rem; }
.menu-toggle { display: none; width: 2.7rem; height: 2.7rem; border: 1px solid var(--line); border-radius: .6rem; background: transparent; padding: .62rem; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--white); }

.hero { position: relative; min-height: 760px; overflow: hidden; padding: 10.5rem 0 6.5rem; isolation: isolate; }
.hero::before { content: ""; position: absolute; z-index: -2; inset: 0; background: linear-gradient(116deg, var(--navy) 0 48%, rgba(3, 105, 161, .13) 100%); }
.hero-grid { position: absolute; z-index: -1; inset: 0; opacity: .36; background-image: linear-gradient(rgba(148,184,211,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(148,184,211,.08) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, #000 0%, transparent 94%); }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(470px, .95fr); align-items: center; gap: clamp(3rem, 7vw, 7rem); }
.eyebrow { margin: 0 0 1rem; color: var(--sky); font-size: .76rem; font-weight: 760; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; color: var(--white); line-height: 1.08; letter-spacing: -.038em; }
h1 { max-width: 720px; font-size: clamp(3.2rem, 6.3vw, 6rem); }
h1 span { display: block; color: var(--sky); }
h2 { font-size: clamp(2.25rem, 4.5vw, 4.15rem); }
h3 { font-size: 1.35rem; }
.hero-lede { max-width: 710px; margin: 1.8rem 0 0; color: #bdcddd; font-size: clamp(1.05rem, 1.7vw, 1.28rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.25rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3.2rem; padding: .82rem 1.2rem; border-radius: .62rem; text-decoration: none; font-weight: 760; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #001827; background: var(--azure); box-shadow: 0 14px 34px rgba(14, 165, 233, .2); }
.button-primary:hover { background: var(--sky); }
.button-secondary { color: var(--white); border: 1px solid rgba(190, 212, 229, .28); background: rgba(255,255,255,.025); }
.button-secondary:hover { border-color: rgba(56, 189, 248, .62); background: rgba(56, 189, 248, .06); }
.button:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid rgba(56, 189, 248, .65); outline-offset: 3px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: .65rem 1.2rem; padding: 0; margin: 2rem 0 0; list-style: none; color: var(--muted); font-size: .86rem; }
.hero-facts li::before { content: ""; display: inline-block; width: .42rem; height: .42rem; margin-right: .55rem; background: var(--azure); border-radius: 50%; }

.diagram-surface { border: 1px solid rgba(148, 184, 211, .24); border-radius: 1.35rem; background: rgba(4, 15, 29, .78); box-shadow: var(--shadow); }
.diagram-title { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 1.15rem; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .73rem; letter-spacing: .1em; text-transform: uppercase; }
.diagram-title b { color: var(--sky); font-weight: 650; }
.hero-diagram { min-height: 470px; padding-bottom: 1rem; }
.hero-flow { min-height: 380px; display: grid; grid-template-columns: 1fr auto 1.18fr auto 1.08fr; align-items: center; gap: .55rem; padding: 2rem 1.2rem; }
.diagram-node, .pool-node { position: relative; padding: 1rem; border: 1px solid rgba(148, 184, 211, .22); border-radius: .78rem; background: #07192b; }
.diagram-node strong, .pool-node strong { display: block; color: var(--white); font-size: .88rem; line-height: 1.35; }
.diagram-node small, .pool-node small { color: var(--muted); font-size: .7rem; }
.node-label { display: block; margin-bottom: .38rem; color: #7892a9; font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; }
.gate-node { padding: 1.25rem .85rem; text-align: center; border-color: rgba(14, 165, 233, .7); background: #08213a; }
.gate-node strong { font-size: .82rem; }
.gate-node em { color: var(--sky); font-style: normal; letter-spacing: .08em; }
.flow-link { display: grid; justify-items: center; color: var(--sky); }
.flow-link span { font-size: 1.4rem; }
.flow-link small { color: #6f8ca4; font-size: .62rem; }
.pool-node { display: grid; gap: .55rem; }
.pool-node > div { display: flex; align-items: center; gap: .48rem; padding: .45rem .55rem; border: 1px solid rgba(148, 184, 211, .16); border-radius: .45rem; background: rgba(255,255,255,.02); }
.pool-node > div i { width: .44rem; height: .44rem; background: var(--operational); border-radius: 50%; }
.pool-node > div.standby i { background: #64748b; }
.pool-node > div strong { font-size: .72rem; }
.diagram-note { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem 1.15rem 0; border-top: 1px solid var(--line); color: #6f89a0; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }

.principle-strip { border-block: 1px solid var(--line); background: #081b30; }
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.principle-grid > div { min-height: 8.5rem; display: grid; align-content: center; padding: 1.25rem 1.45rem; border-right: 1px solid var(--line); }
.principle-grid > div:first-child { border-left: 1px solid var(--line); }
.principle-grid span { color: var(--azure); font-size: .65rem; letter-spacing: .1em; }
.principle-grid strong { margin-top: .25rem; color: var(--white); }
.principle-grid small { color: var(--muted); }

.section { padding: clamp(5rem, 9vw, 8.5rem) 0; }
.section-heading { max-width: 850px; margin-bottom: 3rem; }
.section-heading > p:last-child { margin: 1.25rem 0 0; color: var(--muted); font-size: 1.08rem; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.05fr .95fr; gap: 5rem; align-items: end; }
.split-heading > p { margin-bottom: .35rem; }
.capabilities-section { background: var(--navy-deep); }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability-card { min-height: 285px; padding: 1.55rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.016); }
.capability-card:hover { background: rgba(14, 165, 233, .035); }
.card-index { display: block; margin-bottom: 4.2rem; color: var(--azure); font-size: .7rem; letter-spacing: .1em; }
.capability-card h3 { margin-bottom: 1rem; }
.capability-card p { margin: 0; color: var(--muted); font-size: .95rem; }

.path-section { background: var(--navy-soft); }
.path-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.path-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.06rem; }
.path-copy .scope-copy { padding-left: 1rem; border-left: 2px solid var(--azure); color: #c6d4e0; }
.lifecycle-diagram { overflow: hidden; }
.lifecycle-flow { display: grid; gap: 0; margin: 0; padding: 1.25rem; list-style: none; counter-reset: path; }
.lifecycle-flow li { position: relative; display: grid; grid-template-columns: 3.3rem 1fr; gap: 1rem; align-items: center; min-height: 5.5rem; padding: .9rem 1rem; border: 1px solid rgba(148,184,211,.16); background: rgba(255,255,255,.018); }
.lifecycle-flow li:not(:last-child)::after { content: "↓"; position: absolute; z-index: 2; left: 2.15rem; bottom: -.92rem; display: grid; place-items: center; width: 1.8rem; height: 1.8rem; color: var(--sky); background: var(--navy-soft); border: 1px solid var(--line); border-radius: 50%; }
.lifecycle-flow li + li { margin-top: .7rem; }
.state-number { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; color: var(--sky); border: 1px solid rgba(56,189,248,.36); border-radius: .5rem; font-size: .7rem; }
.lifecycle-flow strong { display: block; color: var(--white); }
.lifecycle-flow small { color: var(--muted); }
.lifecycle-flow .accent-state { border-color: rgba(14,165,233,.55); background: rgba(14,165,233,.07); }
.lifecycle-flow .protected-state { border-color: rgba(16,185,129,.42); }
.protected-state .state-number { color: #5ee6b6; border-color: rgba(16,185,129,.42); }

.use-cases-section { color: #32465a; background: var(--paper); }
.use-cases-section h2, .use-cases-section h3 { color: var(--ink); }
.use-cases-section .section-heading > p:last-child { color: #5e7183; }
.use-cases-section .eyebrow { color: var(--deep-blue); }
.use-case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.use-case-card { min-height: 405px; display: flex; flex-direction: column; padding: 1.65rem; border: 1px solid var(--light-line); border-radius: var(--radius); background: var(--white); box-shadow: 0 14px 40px rgba(15, 42, 65, .07); }
.featured-card { color: var(--text); border-color: #17476f; background: var(--navy-soft); }
.featured-card h3 { color: var(--white); }
.case-topline { display: flex; justify-content: space-between; color: #718394; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.case-topline b { color: var(--deep-blue); }
.featured-card .case-topline { color: #86a1b7; }
.featured-card .case-topline b { color: var(--sky); }
.use-case-card h3 { margin: 4rem 0 1rem; font-size: clamp(1.55rem, 2.5vw, 2.2rem); }
.use-case-card p { margin: 0; color: #627587; }
.featured-card p { color: #adc0d0; }
.mini-diagram { display: grid; grid-template-columns: 1fr auto .66fr auto 1.15fr; align-items: center; gap: .4rem; margin-top: auto; padding-top: 2rem; color: #718394; font-size: .7rem; }
.mini-diagram span, .mini-diagram b { padding: .65rem .45rem; text-align: center; border: 1px solid var(--light-line); border-radius: .45rem; background: #f8fafc; }
.mini-diagram b { color: #052d46; border-color: #80c9eb; background: #e1f4fc; }
.featured-card .mini-diagram { color: #6f8ca4; }
.featured-card .mini-diagram span { color: #c3d0dc; border-color: rgba(148,184,211,.18); background: rgba(255,255,255,.035); }
.boundary-note { display: grid; grid-template-columns: 1fr 1fr; margin-top: 1rem; border: 1px solid var(--light-line); border-radius: var(--radius); overflow: hidden; background: #e9f1f6; }
.boundary-note > div { display: grid; gap: .3rem; padding: 1.4rem 1.6rem; }
.boundary-note > div + div { border-left: 1px solid var(--light-line); }
.boundary-note span { color: var(--deep-blue); font-size: .7rem; font-weight: 760; letter-spacing: .1em; text-transform: uppercase; }
.boundary-note strong { color: #31475b; font-size: .9rem; }

.architecture-section { background: #07172a; }
.architecture-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(3rem, 8vw, 8rem); align-items: center; }
.architecture-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.06rem; }
.qualification-note { margin-top: 2rem; padding: 1.25rem 1.4rem; border-left: 3px solid var(--azure); background: rgba(14,165,233,.05); }
.qualification-note strong { color: var(--white); }
.qualification-note p { margin: .35rem 0 0; color: var(--muted); font-size: .92rem; }
.fabric-diagram { overflow: hidden; }
.fabric-stack { display: grid; justify-items: center; padding: 1.4rem; }
.fabric-layer { width: min(440px, 100%); display: grid; justify-items: center; padding: 1.1rem; border: 1px solid var(--line); border-radius: .7rem; background: rgba(255,255,255,.018); }
.fabric-layer small { color: #7893aa; font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.fabric-layer strong { margin-top: .3rem; color: var(--white); }
.fabric-layer span { color: var(--muted); font-size: .75rem; }
.fabric-single { width: 64%; border-color: rgba(14,165,233,.55); }
.fabric-single strong { color: var(--sky); }
.fabric-zone { width: 82%; }
.gate-pair { display: flex; gap: .55rem; margin: .6rem 0 .35rem; }
.gate-pair b { padding: .42rem .8rem; color: var(--sky); border: 1px solid rgba(14,165,233,.45); border-radius: .42rem; font-size: .72rem; letter-spacing: .08em; }
.fabric-csz { width: 100%; border-color: rgba(56,189,248,.32); background: rgba(3,105,161,.1); }
.vertical-link { height: 2.6rem; display: grid; place-items: center; color: var(--sky); }

.contact-section { background: var(--paper); }
.contact-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(3rem, 7vw, 6.5rem); align-items: start; }
.contact-section h2 { color: var(--ink); }
.contact-copy p:not(.eyebrow) { max-width: 680px; color: #617487; }
.contact-copy .eyebrow { color: var(--deep-blue); }
.contact-guidance { margin-top: 2rem; padding: 1.35rem 1.45rem; color: #52677a; border-left: 3px solid var(--azure); background: #eaf3f8; }
.contact-guidance strong { color: var(--ink); }
.contact-guidance ul { margin: .75rem 0 0; padding-left: 1.15rem; }
.contact-guidance li + li { margin-top: .35rem; }
.contact-form { display: grid; gap: 1.25rem; padding: clamp(1.4rem, 3vw, 2rem); color: #42586b; border: 1px solid var(--light-line); border-radius: var(--radius); background: var(--white); box-shadow: 0 18px 50px rgba(15,42,65,.09); }
.form-heading { display: flex; justify-content: space-between; gap: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--light-line); }
.form-heading p { margin: 0; color: #708294; font-size: .82rem; }
.contact-label { color: var(--deep-blue); font-weight: 780; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form label { display: grid; gap: .42rem; }
.contact-form label > span { color: #334b60; font-size: .86rem; font-weight: 690; }
.contact-form input,
.contact-form select,
.contact-form textarea { width: 100%; min-height: 3rem; padding: .72rem .8rem; color: var(--ink); border: 1px solid #c8d6e1; border-radius: .48rem; background: #fbfdff; font: inherit; font-size: 1rem; }
.contact-form textarea { min-height: 9rem; resize: vertical; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { outline: 3px solid rgba(14,165,233,.18); border-color: var(--azure); }
.contact-form [aria-invalid="true"] { border-color: #b42318; }
.form-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.challenge-row { display: grid; grid-template-columns: 1fr auto; gap: .75rem; align-items: end; }
.challenge-refresh { min-height: 3rem; padding: .7rem .9rem; color: var(--deep-blue); border: 1px solid #9ccce4; border-radius: .48rem; background: #edf8fd; font: inherit; font-weight: 700; cursor: pointer; }
.challenge-refresh:hover { background: #dff2fb; }
.consent-row { grid-template-columns: auto 1fr; align-items: start; gap: .7rem !important; }
.consent-row input { width: 1.05rem; min-height: 1.05rem; margin-top: .28rem; }
.consent-row span { color: #607487 !important; font-weight: 500 !important; }
.form-actions { display: flex; align-items: center; gap: 1rem; padding-top: .25rem; }
.contact-form .button { border: 0; color: var(--white); background: var(--deep-blue); box-shadow: none; cursor: pointer; }
.contact-form .button:hover { background: #075a87; }
.contact-form .button:disabled { color: #758797; background: #dce5eb; cursor: not-allowed; transform: none; }
.form-status { margin: 0; color: #617487; font-size: .86rem; }
.form-status.is-success { color: #087a59; }
.form-status.is-error { color: #a43228; }

.site-footer { padding: 2.5rem 0 5.5rem; border-top: 1px solid var(--line); background: var(--navy-deep); }
.footer-layout { display: grid; grid-template-columns: 1.1fr 1.4fr .75fr 1.2fr; gap: 2rem; align-items: center; }
.footer-layout p { margin: 0; color: #7e96aa; font-size: .75rem; }
.floating-contact { position: fixed; z-index: 45; right: 1.1rem; bottom: 1.1rem; padding: .78rem 1rem; color: var(--white); background: var(--deep-blue); border-radius: .55rem; box-shadow: 0 12px 32px rgba(0,34,62,.35); text-decoration: none; font-weight: 730; }
.floating-contact:hover { background: #075a87; }

@media (max-width: 1040px) {
  .hero { min-height: auto; padding-top: 9rem; }
  .hero-layout, .path-layout, .architecture-layout, .contact-layout { grid-template-columns: 1fr; }
  .hero-layout { gap: 4rem; }
  .hero-diagram, .lifecycle-diagram, .fabric-diagram { width: 100%; max-width: 760px; margin-inline: auto; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .use-case-grid { grid-template-columns: 1fr; }
  .use-case-card { min-height: 340px; }
  .footer-layout { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  :root { --shell: min(100% - 1.25rem, 720px); }
  .header-inner { min-height: 4.5rem; }
  .menu-toggle { display: block; }
  .primary-nav { position: fixed; inset: 4.5rem 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 1rem; border-bottom: 1px solid var(--line); background: rgba(6,21,40,.99); }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: .95rem; border-bottom: 1px solid var(--line); }
  .primary-nav .nav-cta { margin-top: .65rem; text-align: center; }
  h1 { font-size: clamp(2.8rem, 14vw, 4.2rem); }
  .hero { padding-bottom: 4.5rem; }
  .split-heading { grid-template-columns: 1fr; gap: 1.2rem; }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid > div:nth-child(odd) { border-left: 1px solid var(--line); }
  .hero-flow { grid-template-columns: 1fr; min-height: 0; }
  .flow-link span { transform: rotate(90deg); }
  .pool-node { grid-template-columns: repeat(3, 1fr); }
  .pool-node > .node-label { grid-column: 1 / -1; }
  .pool-node > div { display: grid; justify-items: center; text-align: center; }
  .hero-diagram { min-height: 0; }
  .diagram-note { flex-direction: column; }
  .boundary-note { grid-template-columns: 1fr; }
  .boundary-note > div + div { border-top: 1px solid var(--light-line); border-left: 0; }
}

@media (max-width: 580px) {
  .brand-lockup { gap: .55rem; }
  .brand-lockup strong { font-size: 1rem; }
  .brand-lockup span { font-size: .8rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .principle-grid, .capability-grid { grid-template-columns: 1fr; }
  .principle-grid > div, .principle-grid > div:nth-child(odd) { border-left: 1px solid var(--line); }
  .mini-diagram { grid-template-columns: 1fr; }
  .mini-diagram i { transform: rotate(90deg); justify-self: center; }
  .fabric-single, .fabric-zone { width: 100%; }
  .contact-layout { gap: 3rem; }
  .form-grid, .challenge-row { grid-template-columns: 1fr; }
  .form-heading, .form-actions { align-items: stretch; flex-direction: column; }
  .footer-layout { grid-template-columns: 1fr; }
  .floating-contact { right: .7rem; bottom: .7rem; }
}

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