:root {
  --ink: #07111f;
  --ink-soft: #12233b;
  --paper: #f7fbff;
  --white: #ffffff;
  --blue: #176bff;
  --blue-bright: #43a2ff;
  --cyan: #69ddff;
  --line: rgba(12, 39, 70, .14);
  --muted: #53657c;
  --shadow: 0 24px 70px rgba(14, 61, 119, .12);
  --radius: 1.4rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  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;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img, svg { max-width: 100%; }
.container { width: min(1160px, calc(100% - 2.5rem)); margin: 0 auto; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; background: var(--white); padding: .8rem 1rem; border-radius: .6rem; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: rgba(7, 17, 31, .9);
  backdrop-filter: blur(18px);
}
.nav { min-height: 4.8rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; color: var(--white); font-weight: 760; letter-spacing: -.02em; }
.brand-mark { width: 2rem; height: 2rem; border-radius: .65rem; display: grid; place-items: center; background: linear-gradient(145deg, var(--blue-bright), var(--blue)); box-shadow: 0 8px 28px rgba(23,107,255,.32); }
.brand-mark svg { width: 1.25rem; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; color: #c4d2e5; font-size: .93rem; font-weight: 620; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--white); }
.nav-cta { padding: .65rem 1rem; background: var(--white); color: var(--ink) !important; border-radius: 999px; }
.menu-toggle { display: none; color: var(--white); background: transparent; border: 1px solid rgba(255,255,255,.25); border-radius: .65rem; padding: .55rem; }
.menu-toggle svg { display: block; width: 1.25rem; height: 1.25rem; }

.hero { overflow: hidden; position: relative; min-height: 44rem; background: var(--ink); color: var(--white); display: grid; align-items: center; }
.hero::before { content: ""; position: absolute; inset: -30% -10% auto 36%; height: 50rem; background: radial-gradient(circle, rgba(35,126,255,.42), transparent 62%); pointer-events: none; }
.hero::after { content: ""; position: absolute; right: -8rem; bottom: -16rem; width: 36rem; height: 36rem; border: 1px solid rgba(105,221,255,.24); border-radius: 50%; box-shadow: 0 0 0 4rem rgba(105,221,255,.025), 0 0 0 8rem rgba(105,221,255,.02); pointer-events: none; }
.hero-grid { position: relative; z-index: 1; padding: 7rem 0 6rem; display: grid; grid-template-columns: 1.1fr .9fr; gap: 5rem; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: .65rem; margin: 0 0 1.25rem; color: var(--blue-bright); text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 800; }
.eyebrow::before { content: ""; width: 1.8rem; height: 2px; background: currentColor; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.045em; }
h1 { max-width: 790px; font-size: clamp(3.2rem, 7vw, 6.6rem); font-weight: 760; }
h1 span { color: var(--cyan); }
.hero-copy { max-width: 680px; margin: 1.7rem 0 0; color: #afbed0; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2.2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .6rem; min-height: 3.2rem; padding: .8rem 1.2rem; border-radius: .8rem; font-weight: 760; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--blue); color: var(--white); box-shadow: 0 14px 36px rgba(23,107,255,.28); }
.button.light { background: var(--white); color: var(--ink); }
.button.ghost { color: var(--white); border: 1px solid rgba(255,255,255,.22); }
.button svg { width: 1rem; }

.system-card { position: relative; padding: 1.1rem; border: 1px solid rgba(255,255,255,.16); border-radius: 1.8rem; background: linear-gradient(145deg, rgba(255,255,255,.1), rgba(255,255,255,.035)); box-shadow: 0 32px 90px rgba(0,0,0,.32); transform: rotate(2deg); }
.system-card-inner { padding: 1.5rem; border-radius: 1.2rem; background: #0c192a; }
.system-top { display: flex; align-items: center; justify-content: space-between; color: #8194aa; font-size: .76rem; }
.signal { display: flex; gap: .3rem; }
.signal i { display: block; width: .55rem; height: .55rem; border-radius: 50%; background: #263950; }
.signal i:first-child { background: var(--cyan); }
.system-title { margin: 3rem 0 1rem; font-size: 1.55rem; letter-spacing: -.03em; }
.system-line { height: .55rem; background: #1c3047; border-radius: 999px; margin: .7rem 0; }
.system-line.short { width: 58%; background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.system-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-top: 2.4rem; }
.metric { padding: 1rem; border-radius: .9rem; background: #12243a; }
.metric strong { display: block; color: var(--white); font-size: 1.45rem; }
.metric span { color: #8194aa; font-size: .76rem; }

.trust-strip { background: var(--white); border-bottom: 1px solid var(--line); }
.trust-grid { padding: 1.4rem 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.trust-item { display: flex; gap: .75rem; align-items: center; font-size: .88rem; color: var(--muted); }
.trust-item svg { width: 1.25rem; flex: 0 0 auto; color: var(--blue); }
.trust-item strong { color: var(--ink); display: block; }

.section { padding: 7rem 0; }
.section.compact { padding: 4.5rem 0; }
.section-dark { background: var(--ink); color: var(--white); }
.section-head { max-width: 760px; margin-bottom: 3rem; }
.section-head h2 { font-size: clamp(2.3rem, 5vw, 4.4rem); }
.section-head p { margin: 1.2rem 0 0; color: var(--muted); font-size: 1.08rem; }
.section-dark .section-head p { color: #a7b7ca; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.card { padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 8px 35px rgba(14,61,119,.04); }
.card-icon { width: 2.8rem; height: 2.8rem; display: grid; place-items: center; border-radius: .9rem; background: #eaf4ff; color: var(--blue); }
.card-icon svg { width: 1.35rem; }
.card h3 { margin-top: 2.5rem; font-size: 1.45rem; }
.card p { margin: .85rem 0 0; color: var(--muted); }
.card-link { display: inline-flex; align-items: center; gap: .5rem; margin-top: 1.5rem; color: var(--blue); font-weight: 750; }

.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 6rem; align-items: start; }
.principles { display: grid; gap: 1rem; }
.principle { display: grid; grid-template-columns: auto 1fr; gap: 1rem; padding: 1.5rem; border-top: 1px solid rgba(255,255,255,.15); }
.principle-num { color: var(--cyan); font-weight: 800; font-size: .8rem; }
.principle h3 { font-size: 1.25rem; }
.principle p { color: #9aabbe; margin: .55rem 0 0; }

.cta-panel { padding: clamp(2rem, 6vw, 5rem); color: var(--white); border-radius: 2rem; background: linear-gradient(115deg, #0e4bc7, #1679ff 58%, #21a8dc); box-shadow: var(--shadow); }
.cta-panel h2 { max-width: 820px; font-size: clamp(2.2rem, 5vw, 4.7rem); }
.cta-panel p { max-width: 700px; color: #e2efff; font-size: 1.08rem; }

.page-hero { padding: 7.5rem 0 5.5rem; background: var(--ink); color: var(--white); }
.page-hero h1 { font-size: clamp(3rem, 6vw, 5.7rem); }
.page-hero p { max-width: 740px; color: #aebed1; font-size: 1.15rem; margin: 1.4rem 0 0; }
.breadcrumbs { color: #7f94ac; font-size: .86rem; margin-bottom: 2rem; }
.breadcrumbs a { color: #b8c7d9; }

.prose { width: min(780px, calc(100% - 2.5rem)); margin: 0 auto; padding: 5.5rem 0 7rem; }
.prose h2 { margin-top: 3.3rem; font-size: 1.8rem; }
.prose h3 { margin-top: 2.1rem; font-size: 1.2rem; letter-spacing: -.02em; }
.prose p, .prose li { color: #41546a; }
.prose a { color: var(--blue); text-decoration: underline; text-underline-offset: .2em; }
.prose .updated { color: #77879a; font-size: .9rem; }
.notice { margin: 2rem 0; padding: 1.2rem 1.3rem; border-left: 4px solid var(--blue); background: #eaf4ff; border-radius: 0 .8rem .8rem 0; }
.definition-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2rem; }
.definition { padding: 1.4rem; background: var(--white); border: 1px solid var(--line); border-radius: 1rem; }
.definition strong { display: block; }
.definition span { color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.contact-card { padding: 2rem; border-radius: 1.3rem; background: var(--white); border: 1px solid var(--line); }
.contact-card h2 { font-size: 1.55rem; }
.contact-card a { color: var(--blue); font-weight: 720; }
.contact-card p { color: var(--muted); }
.detail-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.detail-list li { padding: .8rem 0; border-top: 1px solid var(--line); }
.detail-list span { display: block; color: var(--muted); font-size: .82rem; }

.site-footer { padding: 4rem 0 2rem; background: #050c16; color: #a7b7ca; }
.footer-grid { display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 3rem; }
.footer-brand p { max-width: 340px; }
.footer-col h2 { color: var(--white); font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; }
.footer-col a { display: block; margin-top: .65rem; font-size: .92rem; }
.footer-col a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.1); font-size: .82rem; }

@media (max-width: 880px) {
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; left: 1.25rem; right: 1.25rem; top: 4.2rem; padding: 1rem; flex-direction: column; align-items: stretch; gap: .15rem; border-radius: 1rem; background: #102036; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .8rem; }
  .nav-cta { text-align: center; margin-top: .5rem; }
  .hero-grid, .split { grid-template-columns: 1fr; gap: 3rem; }
  .hero-grid { padding: 5rem 0; }
  .system-card { max-width: 520px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .trust-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 1.5rem, 1160px); }
  .hero { min-height: auto; }
  h1 { font-size: 3.25rem; }
  .system-card { transform: none; }
  .cards, .trust-grid, .contact-grid, .definition-grid, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 5rem 0; }
  .footer-bottom { flex-direction: column; }
}

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