/*
  Tupleryn Design Brief — inspired by https://tuples.ai/
  Structure: compact white nav → centered statement hero → systems map → dark
  capability list → asymmetric solution mosaic → trust architecture → CTA band.
  Reference-derived decisions: Manrope typography; deep navy foundations; soft
  periwinkle/violet gradient; white content bands; rounded 14–18px panels;
  restrained, high-confidence motion and dense enterprise information hierarchy.
*/
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f3f5fb;
  --color-surface: #e7ebf7;
  --color-ink: #0d2f55;
  --color-ink-deep: #071d34;
  --color-text: #102d4d;
  --color-text-muted: #60718a;
  --color-on-dark: #ffffff;
  --color-on-dark-muted: #cbd6e8;
  --color-accent: #8b7bc3;
  --color-accent-soft: #a6a1da;
  --color-accent-hover: #7163ad;
  --color-border: #ccd4e3;
  --color-line-dark: rgba(255,255,255,.18);
  --font-display: "Manrope", Arial, sans-serif;
  --font-body: "Manrope", Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --space-section: clamp(5.25rem, 9vw, 8.5rem);
  --container: 1180px;
  --shadow-float: 0 24px 70px rgba(7, 29, 52, .16);
  --transition-base: 280ms cubic-bezier(.22, .61, .36, 1);
  --transition-reveal: 720ms cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.modal-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
button, a { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3 { margin-top: 0; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -.035em; line-height: 1.08; }
h1 { font-size: clamp(2.6rem, 5.5vw, 5.4rem); font-weight: 800; }
h2 { font-size: clamp(2.1rem, 4.2vw, 4rem); font-weight: 800; }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); font-weight: 750; }

.container { width: min(calc(100% - 3rem), var(--container)); margin-inline: auto; }
.section { padding-block: var(--space-section); }
.section--ink { color: var(--color-on-dark); background: var(--color-ink); }
.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: 1000; top: .75rem; left: .75rem; padding: .7rem 1rem;
  color: #fff; background: var(--color-ink); transform: translateY(-150%);
}
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid var(--color-accent-soft); outline-offset: 4px; }

.eyebrow {
  margin-bottom: 1.35rem; color: var(--color-on-dark-muted); font-size: .72rem;
  font-weight: 800; letter-spacing: .16em; line-height: 1.4; text-transform: uppercase;
}
.eyebrow--blue { color: #52679b; }
.button, .nav-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 1.1rem;
  min-height: 48px; padding: .85rem 1.25rem; border: 1px solid transparent;
  border-radius: 999px; font-size: .84rem; font-weight: 800; cursor: pointer;
  transition: color var(--transition-base), background var(--transition-base),
    border-color var(--transition-base), transform var(--transition-base);
}
.button:hover, .nav-cta:hover { transform: translateY(-2px); }
.button--light { color: var(--color-ink); background: #fff; }
.button--light:hover { background: #e9edf7; }
.button--outline { color: var(--color-ink); background: transparent; border-color: var(--color-border); }
.button--outline:hover { color: #fff; background: var(--color-ink); border-color: var(--color-ink); }
.button--ink, .button--primary { color: #fff; background: var(--color-ink); }
.button--ink:hover, .button--primary:hover { background: var(--color-ink-deep); }
.text-link {
  display: inline-flex; align-items: center; gap: .8rem; padding: .3rem 0;
  border: 0; border-bottom: 1px solid var(--color-border); background: none;
  color: var(--color-ink); font-weight: 800; cursor: pointer;
  transition: gap var(--transition-base), border-color var(--transition-base);
}
.text-link:hover { gap: 1.1rem; border-color: currentColor; }
.text-link--on-dark { color: #fff; border-color: rgba(255,255,255,.45); }

.site-header {
  position: sticky; z-index: 100; top: 0; background: rgba(255,255,255,.96);
  border-bottom: 1px solid transparent; transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.site-header.is-scrolled { border-color: rgba(13,47,85,.1); box-shadow: 0 8px 30px rgba(13,47,85,.07); }
.nav-shell { display: flex; min-height: 84px; align-items: center; justify-content: space-between; }
.brand { flex: 0 0 auto; }
.brand img { width: 174px; height: auto; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.1vw, 2.25rem); }
.site-nav > a {
  position: relative; color: var(--color-ink); font-size: .78rem; font-weight: 750;
}
.site-nav > a::after {
  position: absolute; right: 0; bottom: -.45rem; left: 0; height: 2px;
  background: var(--color-accent); content: ""; transform: scaleX(0); transform-origin: right;
  transition: transform var(--transition-base);
}
.site-nav > a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding-inline: 1.15rem; color: #fff; background: var(--color-ink); }
.nav-toggle { display: none; padding: .6rem; border: 0; background: transparent; }
.nav-toggle > span:not(.sr-only) { display: block; width: 25px; height: 2px; margin: 5px; background: var(--color-ink); }

.hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(118deg, #082e61 0%, #123b75 45%, #7767a9 82%, #9c7ba7 100%);
}
.hero::before {
  position: absolute; inset: 0; opacity: .2; content: "";
  background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 64px 64px; mask-image: linear-gradient(to bottom, transparent, #000 35%, transparent);
}
.hero__inner { position: relative; z-index: 1; padding-block: clamp(5rem, 9vw, 8.2rem) 7.2rem; text-align: center; }
.hero h1 { max-width: 1040px; margin-inline: auto; margin-bottom: 1.6rem; }
.hero__lede {
  max-width: 720px; margin: 0 auto clamp(3.3rem, 6vw, 5.2rem);
  color: #e1e7f3; font-size: clamp(1rem, 1.6vw, 1.25rem);
}
.hero__principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; text-align: left; }
.hero__principles article {
  min-height: 220px; padding: 1.8rem; border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-md); background: rgba(255,255,255,.13);
  backdrop-filter: blur(8px); transition: background var(--transition-base), transform var(--transition-base);
}
.hero__principles article:hover { background: rgba(255,255,255,.19); transform: translateY(-5px); }
.hero__principles span { display: block; margin-bottom: 2.5rem; color: #d4d9f3; font-size: .7rem; font-weight: 800; }
.hero__principles h2 { margin-bottom: .75rem; font-size: 1.1rem; letter-spacing: -.02em; }
.hero__principles p { margin-bottom: 0; color: #dce3f1; font-size: .88rem; line-height: 1.55; }
.hero__actions { display: flex; justify-content: center; gap: 1.5rem; margin-top: 2.6rem; }
.signal-line {
  position: absolute; bottom: 0; left: 50%; display: flex; width: min(100% - 3rem, 900px);
  align-items: center; transform: translateX(-50%); opacity: .7;
}
.signal-line span { width: 8px; height: 8px; border: 2px solid #fff; border-radius: 50%; }
.signal-line i { flex: 1; height: 1px; background: rgba(255,255,255,.4); }

.section-intro { max-width: 830px; margin-bottom: clamp(3rem, 6vw, 5rem); }
.section-intro h2 { margin-bottom: 1.4rem; color: var(--color-ink); }
.section-intro > p:last-child { max-width: 680px; color: var(--color-text-muted); font-size: 1.08rem; }
.section-intro--row { display: flex; max-width: none; align-items: end; justify-content: space-between; gap: 3rem; }
.section-intro--row > div { max-width: 760px; }
.section-intro--row h2 { margin-bottom: 0; }

.system-map {
  display: grid; grid-template-columns: 1fr 1.1fr .9fr; min-height: 430px; margin-bottom: 2.25rem;
  overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg-alt);
}
.system-map__rail { display: grid; padding: 1.25rem; gap: .7rem; }
.system-map__rail > div { padding: 1.25rem; border-radius: var(--radius-sm); background: #fff; }
.system-map__rail span, .system-map__rail small { display: block; color: var(--color-text-muted); font-size: .68rem; }
.system-map__rail strong { display: block; margin-block: .65rem .3rem; font-size: .92rem; }
.system-map__core {
  position: relative; display: grid; place-content: center; text-align: center; color: #fff;
  background: linear-gradient(150deg, var(--color-ink) 20%, #526399 100%);
}
.system-map__core::before, .system-map__core::after {
  position: absolute; top: 50%; width: 18%; height: 1px; background: rgba(255,255,255,.4); content: "";
}
.system-map__core::before { left: 0; }
.system-map__core::after { right: 0; }
.core-mark {
  position: relative; z-index: 1; display: grid; width: 74px; height: 74px; margin: 0 auto 1.3rem;
  place-content: center; border: 1px solid rgba(255,255,255,.65); border-radius: 50%; font-size: 2rem; font-weight: 800;
}
.core-orbit { position: absolute; inset: 16%; border: 1px dashed rgba(255,255,255,.3); border-radius: 50%; }
.system-map__core p { margin: 0; color: #dce3f1; font-size: .78rem; }
.system-map__core strong { color: #fff; font-size: 1.05rem; }
.system-map__outcomes { display: grid; align-content: center; padding: 1.4rem; gap: .8rem; }
.system-map__outcomes p {
  margin: 0; padding: 1.2rem; border-left: 3px solid var(--color-accent);
  background: #fff; box-shadow: 0 8px 24px rgba(13,47,85,.06); font-size: .86rem; font-weight: 800;
}

.capability-layout { display: grid; grid-template-columns: .85fr 1.35fr; gap: clamp(4rem, 8vw, 8rem); }
.capability-heading { position: sticky; top: 130px; align-self: start; }
.capability-heading h2 { font-size: clamp(2.2rem, 4vw, 3.7rem); }
.capability-heading > p:last-child { max-width: 420px; color: var(--color-on-dark-muted); }
.capability-list { border-top: 1px solid var(--color-line-dark); }
.capability-row {
  display: grid; grid-template-columns: 42px 1fr 54px; align-items: start; gap: 1.2rem;
  padding-block: 2.1rem; border-bottom: 1px solid var(--color-line-dark);
}
.capability-row__number { color: #9badd0; font-size: .7rem; font-weight: 800; }
.capability-row h3 { margin-bottom: .7rem; font-size: 1.4rem; }
.capability-row p { margin: 0; color: var(--color-on-dark-muted); font-size: .9rem; }
.capability-row__glyph {
  display: grid; width: 44px; height: 44px; place-content: center; border: 1px solid var(--color-line-dark);
  border-radius: 50%; color: #d8cff7; font-size: 1.2rem; transition: background var(--transition-base), transform var(--transition-base);
}
.capability-row:hover .capability-row__glyph { background: var(--color-accent); transform: rotate(8deg); }

.solutions { background: #fff; }
.solution-mosaic { display: grid; grid-template-columns: 1.4fr .6fr; grid-template-rows: 1fr 1fr; gap: 1rem; }
.solution-feature {
  grid-row: 1 / 3; overflow: hidden; border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); background: var(--color-bg-alt);
}
.solution-feature__visual {
  position: relative; min-height: 300px; overflow: hidden;
  background: linear-gradient(135deg, #dfe6f4 0%, #f9f6ee 48%, #c4b8df 100%);
}
.route-map { position: absolute; inset: 12%; border: 1px solid rgba(13,47,85,.22); border-radius: 50%; }
.route-map::before, .route-map::after {
  position: absolute; border: 1px solid rgba(13,47,85,.22); border-radius: 50%; content: "";
}
.route-map::before { inset: 13%; }
.route-map::after { inset: 30%; }
.route-map i { position: absolute; width: 13px; height: 13px; border: 3px solid #fff; border-radius: 50%; background: var(--color-ink); box-shadow: 0 0 0 1px var(--color-ink); }
.route-map i:nth-child(1) { top: 8%; left: 29%; }
.route-map i:nth-child(2) { top: 54%; left: 7%; }
.route-map i:nth-child(3) { right: 12%; bottom: 20%; }
.route-map i:nth-child(4) { top: 21%; right: 19%; background: var(--color-accent); }
.route-map span { position: absolute; top: 50%; left: 50%; width: 62px; height: 62px; border-radius: 50%; background: var(--color-ink); transform: translate(-50%,-50%); box-shadow: 0 12px 35px rgba(13,47,85,.35); }
.solution-feature__copy { padding: 2.2rem; }
.solution-feature__copy .eyebrow { color: var(--color-text-muted); }
.solution-feature__copy h3 { max-width: 600px; margin-bottom: 1.8rem; font-size: clamp(1.5rem, 2.5vw, 2.25rem); }
.solution-compact {
  display: flex; min-height: 240px; padding: 2rem; flex-direction: column; justify-content: flex-end;
  border-radius: var(--radius-lg); color: #fff; background: var(--color-ink);
}
.solution-compact--violet { background: #766aa8; }
.solution-compact > span { margin-bottom: auto; color: rgba(255,255,255,.65); font-size: .7rem; font-weight: 800; }
.solution-compact h3 { margin-bottom: .65rem; }
.solution-compact p { margin: 0; color: rgba(255,255,255,.78); font-size: .86rem; }

.technology {
  color: #fff; background: linear-gradient(115deg, var(--color-ink-deep), var(--color-ink) 55%, #684e6b);
}
.technology-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: clamp(4rem, 9vw, 9rem); }
.technology-copy h2 { margin-bottom: 1.5rem; }
.technology-copy > p:not(.eyebrow) { margin-bottom: 2rem; color: var(--color-on-dark-muted); font-size: 1.04rem; }
.assurance-stack { display: flex; flex-direction: column; perspective: 900px; }
.assurance-stack > div {
  position: relative; display: grid; grid-template-columns: 34px 1fr auto; align-items: center;
  min-height: 86px; margin-top: -1px; padding: 1rem 1.35rem; border: 1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.09); backdrop-filter: blur(8px);
  transform: perspective(700px) rotateX(5deg); transition: transform var(--transition-base), background var(--transition-base);
}
.assurance-stack > div:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.assurance-stack > div:last-child { border-radius: 0 0 var(--radius-md) var(--radius-md); }
.assurance-stack > div:hover { z-index: 2; background: rgba(255,255,255,.16); transform: translateX(-8px) rotateX(0); }
.assurance-stack span { color: #c2b9e9; font-size: .7rem; font-weight: 800; }
.assurance-stack strong { font-size: .92rem; }
.assurance-stack small { color: #bcc9da; font-size: .7rem; }

.cta-band { padding-block: clamp(4.8rem, 8vw, 7.8rem); background: linear-gradient(105deg, #d8dfef, #f5f3ed 50%, #b7a7d7); }
.cta-band__inner { text-align: center; }
.cta-band .eyebrow { color: #5d6685; }
.cta-band h2 { max-width: 900px; margin-inline: auto; color: var(--color-ink); }
.cta-band p:not(.eyebrow) { max-width: 660px; margin: 0 auto 2rem; color: #4f627a; }
.cta-band__actions { display: flex; justify-content: center; align-items: center; gap: 1.7rem; }

.site-footer { color: #fff; background: var(--color-ink-deep); }
.footer-main { display: grid; grid-template-columns: 1fr 1fr; padding-block: 4.2rem; gap: 3rem; }
.footer-brand img { width: 175px; filter: brightness(0) invert(1); }
.footer-brand p { margin: 1rem 0 0; color: #aebdd1; font-size: .86rem; }
.footer-contact { text-align: right; }
.footer-contact span { display: block; margin-bottom: .7rem; color: #8fa2bc; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.footer-contact a { font-size: clamp(1.2rem, 2.5vw, 2rem); font-weight: 700; }
.footer-contact b { color: #b8a9dd; }
.footer-base {
  display: flex; padding-block: 1.25rem; justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,.12); color: #8fa2bc; font-size: .72rem;
}
.footer-base p { margin: 0; }
.footer-base nav { display: flex; gap: 1.4rem; }
.footer-base a:hover { color: #fff; }

.modal {
  position: fixed; z-index: 300; inset: 0; display: grid; padding: 1.5rem; place-items: center;
}
.modal[hidden] { display: none; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(4,17,31,.78); backdrop-filter: blur(5px); }
.modal__panel {
  position: relative; width: min(100%, 620px); max-height: calc(100vh - 3rem); padding: clamp(2rem, 5vw, 3.5rem);
  overflow-y: auto; border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-float);
}
.modal__panel h2 { color: var(--color-ink); font-size: clamp(1.8rem, 4vw, 2.8rem); }
.modal__panel p, .modal__panel li { color: var(--color-text-muted); }
.modal__panel ul { margin: 1.5rem 0 2rem; padding-left: 1.2rem; }
.modal__close {
  position: absolute; top: 1rem; right: 1rem; display: grid; width: 42px; height: 42px;
  padding: 0; place-items: center; border: 1px solid var(--color-border); border-radius: 50%;
  background: #fff; font-size: 1.5rem; cursor: pointer;
}

.policy-page { min-height: 100vh; background: var(--color-bg-alt); }
.policy-header { padding-block: 1.3rem; background: #fff; border-bottom: 1px solid var(--color-border); }
.policy-header .container { display: flex; align-items: center; justify-content: space-between; }
.policy-header img { width: 170px; }
.policy-header a:last-child { font-size: .82rem; font-weight: 800; }
.policy-main { width: min(calc(100% - 3rem), 820px); margin-inline: auto; padding-block: var(--space-section); }
.policy-main h1 { color: var(--color-ink); font-size: clamp(2.5rem, 6vw, 4.8rem); }
.policy-main h2 { margin-top: 3rem; color: var(--color-ink); font-size: 1.45rem; }
.policy-main p, .policy-main li { color: var(--color-text-muted); }
.policy-updated { margin-bottom: 3rem; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }