:root {
  color-scheme: dark;
  --ink: #f5f8ff;
  --muted: #a9b5ca;
  --line: rgba(168, 192, 231, 0.17);
  --panel: rgba(11, 24, 47, 0.72);
  --panel-strong: #0e1c36;
  --base: #06101f;
  --base-deep: #030914;
  --cyan: #5de4da;
  --blue: #78a7ff;
  --violet: #aa8cff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --radius: 1.25rem;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% 10%, rgba(93, 228, 218, 0.11), transparent 28rem),
    radial-gradient(circle at 86% 18%, rgba(120, 167, 255, 0.12), transparent 32rem),
    linear-gradient(180deg, var(--base-deep), var(--base) 36%, #071226 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed; left: 1rem; top: -5rem; z-index: 100;
  padding: .75rem 1rem; border-radius: .7rem; background: var(--cyan); color: #03101a;
}
.skip-link:focus { top: 1rem; }

.shell { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(3, 9, 20, 0.79); backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 4.7rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .72rem; text-decoration: none; font-weight: 780; letter-spacing: .11em; }
.brand img { width: 2rem; height: 2rem; }
.nav-links { display: flex; align-items: center; gap: 1.4rem; }
.nav-links a { color: var(--muted); font-size: .92rem; font-weight: 650; text-decoration: none; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
.language-link { border: 1px solid var(--line); padding: .45rem .7rem; border-radius: 999px; }
.menu-button { display: none; border: 1px solid var(--line); color: var(--ink); background: transparent; border-radius: .7rem; padding: .55rem .7rem; }

.hero { padding: 7.5rem 0 5rem; overflow: clip; }
.hero-grid { display: grid; grid-template-columns: 1.18fr .82fr; gap: clamp(2.5rem, 7vw, 7rem); align-items: center; }
.eyebrow { color: var(--cyan); font-weight: 760; font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { margin-top: 1rem; max-width: 13ch; font-size: clamp(3rem, 7vw, 6.25rem); }
h2 { max-width: 20ch; font-size: clamp(2.1rem, 4vw, 3.7rem); }
h3 { font-size: 1.18rem; letter-spacing: -.015em; }
.hero-copy { max-width: 63ch; margin: 1.6rem 0 0; color: #c5d0e3; font-size: clamp(1.05rem, 1.5vw, 1.22rem); }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: .72rem 1rem; border-radius: .82rem; font-weight: 760; text-decoration: none; }
.button-primary { color: #03141a; background: linear-gradient(135deg, var(--cyan), #8cf1c5); box-shadow: 0 12px 40px rgba(93, 228, 218, .16); }
.button-secondary { border: 1px solid var(--line); background: rgba(255, 255, 255, .025); }
.fine-print { max-width: 70ch; margin-top: 1.2rem; color: var(--muted); font-size: .88rem; }

.evidence-orbit { position: relative; min-height: 30rem; display: grid; place-items: center; }
.orbit-ring { position: absolute; border: 1px solid rgba(120,167,255,.22); border-radius: 50%; }
.orbit-ring:nth-child(1) { width: 29rem; height: 29rem; }
.orbit-ring:nth-child(2) { width: 21rem; height: 21rem; border-style: dashed; }
.orbit-ring:nth-child(3) { width: 13rem; height: 13rem; }
.core { position: relative; z-index: 2; width: 10rem; height: 10rem; border-radius: 50%; display: grid; place-items: center; text-align: center; background: radial-gradient(circle at 35% 25%, #193e61, #0a1830 70%); border: 1px solid rgba(93,228,218,.42); box-shadow: 0 0 65px rgba(93,228,218,.14); font-weight: 780; }
.orbit-label { position: absolute; z-index: 3; padding: .5rem .7rem; border: 1px solid var(--line); border-radius: .65rem; background: rgba(7,18,38,.92); color: #cfe0fa; font-size: .78rem; font-weight: 720; box-shadow: var(--shadow); }
.label-a { top: 2rem; right: 2rem; }.label-b { bottom: 4rem; right: 0; }.label-c { bottom: 2rem; left: 2rem; }.label-d { top: 4rem; left: 0; }

.trust-bar { border-block: 1px solid var(--line); background: rgba(255,255,255,.018); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 1.25rem; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; margin-bottom: .2rem; font-size: .93rem; }
.trust-item span { color: var(--muted); font-size: .83rem; }

.workspace {
  display: grid;
  grid-template-columns: minmax(13rem, .42fr) 1fr;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.2);
  background: rgba(4, 12, 27, .68);
  box-shadow: var(--shadow);
}
.workspace-tabs { display: grid; align-content: start; gap: .55rem; }
.workspace-tab {
  width: 100%; padding: .95rem; border: 1px solid transparent; border-radius: .85rem;
  color: var(--muted); background: transparent; font: inherit; font-weight: 720; text-align: left; cursor: pointer;
}
.workspace-tab:hover, .workspace-tab:focus-visible { color: var(--ink); border-color: var(--line); }
.workspace-tab[aria-selected="true"] { color: #03141a; background: linear-gradient(135deg, var(--cyan), #98eabf); }
.workspace-panel { min-height: 22rem; padding: clamp(1.4rem, 4vw, 2.4rem); border: 1px solid var(--line); border-radius: 1rem; background: linear-gradient(145deg, rgba(17, 39, 73, .82), rgba(8, 19, 40, .9)); }
.workspace-panel[hidden] { display: none; }
.workspace-kicker { color: var(--blue); font: 700 .78rem ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; letter-spacing: .1em; }
.workspace-panel h3 { margin-top: .7rem; font-size: clamp(1.65rem, 3vw, 2.4rem); }
.workspace-panel > p { max-width: 65ch; color: var(--muted); }
.workspace-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; margin-top: 2rem; }
.metric { padding: 1rem; border: 1px solid var(--line); border-radius: .8rem; background: rgba(255,255,255,.025); }
.metric strong { display: block; font-size: .9rem; }
.metric span { display: block; margin-top: .25rem; color: var(--muted); font-size: .8rem; }

section { padding: 6.5rem 0; }
.section-intro { display: grid; grid-template-columns: .75fr 1.25fr; gap: 3rem; margin-bottom: 3rem; }
.section-intro p { max-width: 65ch; margin: .4rem 0 0; color: var(--muted); font-size: 1.06rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { min-height: 16rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(150deg, rgba(18,39,73,.78), rgba(8,20,42,.72)); box-shadow: var(--shadow); }
.card-number { color: var(--cyan); font: 700 .78rem ui-monospace, SFMono-Regular, Menlo, monospace; }
.card h3 { margin-top: 2.7rem; }
.card p { margin: .8rem 0 0; color: var(--muted); }

.pipeline { display: grid; gap: .7rem; counter-reset: flow; }
.step { display: grid; grid-template-columns: 3.4rem 1fr auto; gap: 1rem; align-items: center; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: .9rem; background: rgba(7,18,38,.7); }
.step::before { counter-increment: flow; content: counter(flow, decimal-leading-zero); color: var(--cyan); font: 700 .8rem ui-monospace, monospace; }
.step span { color: var(--muted); font-size: .84rem; }

.principles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.principle { padding: 1.5rem; border-left: 2px solid var(--blue); background: rgba(255,255,255,.025); }
.principle p { margin: .6rem 0 0; color: var(--muted); }

.faq { display: grid; gap: .75rem; max-width: 900px; margin-inline: auto; }
.faq details { border: 1px solid var(--line); border-radius: .9rem; background: rgba(255,255,255,.022); }
.faq summary { cursor: pointer; list-style: none; padding: 1.15rem 3rem 1.15rem 1.2rem; font-weight: 760; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 1.2rem; top: .9rem; color: var(--cyan); font-size: 1.35rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0; padding: 0 1.2rem 1.2rem; color: var(--muted); }

[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

.cta { padding: clamp(2rem, 6vw, 4rem); border: 1px solid rgba(93,228,218,.25); border-radius: calc(var(--radius) * 1.3); background: linear-gradient(135deg, rgba(93,228,218,.11), rgba(120,167,255,.09)); text-align: center; }
.cta h2 { margin-inline: auto; }
.cta p { max-width: 60ch; margin: 1rem auto 0; color: var(--muted); }
.cta .actions { justify-content: center; }

.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: start; }
.footer-copy { max-width: 65ch; color: var(--muted); font-size: .86rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: flex-end; }
.footer-links a { color: var(--muted); font-size: .86rem; text-decoration: none; }

.legal { padding: 5rem 0; }
.legal article { max-width: 800px; }
.legal h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
.legal h2 { margin-top: 2.5rem; font-size: 1.55rem; }
.legal p, .legal li { color: var(--muted); }
.error-code { margin-top: 4rem; }

@media (max-width: 900px) {
  .menu-button { display: inline-flex; }
  .nav-links { position: absolute; inset: 4.7rem 1rem auto; display: none; flex-direction: column; align-items: stretch; padding: 1rem; border: 1px solid var(--line); border-radius: 1rem; background: #071327; box-shadow: var(--shadow); }
  .nav-links.is-open { display: flex; }
  .hero-grid, .section-intro { grid-template-columns: 1fr; }
  .hero { padding-top: 5rem; }
  .evidence-orbit { min-height: 25rem; }
  .orbit-ring:nth-child(1) { width: 23rem; height: 23rem; }
  .orbit-ring:nth-child(2) { width: 17rem; height: 17rem; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .workspace { grid-template-columns: 1fr; }
  .workspace-tabs { grid-template-columns: repeat(3, 1fr); }
  .workspace-tab { text-align: center; }
}
@media (max-width: 620px) {
  h1 { font-size: clamp(2.65rem, 15vw, 4.1rem); }
  section { padding: 4.6rem 0; }
  .principles, .footer-grid { grid-template-columns: 1fr; }
  .workspace-tabs, .workspace-metrics { grid-template-columns: 1fr; }
  .step { grid-template-columns: 2.3rem 1fr; }
  .step span { grid-column: 2; }
  .evidence-orbit { transform: scale(.88); margin-inline: -1.5rem; }
  .footer-links { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } [data-reveal] { opacity: 1; transform: none; transition: none; } }