:root {
  --bg: #111820;
  --bg-2: #16212a;
  --text: #e6edf0;
  --muted: #93a4ad;
  --dim: #5e727d;
  --line: rgba(170, 201, 214, .16);
  --line-strong: rgba(202, 229, 239, .32);
  --panel: rgba(13, 22, 29, .58);
  --panel-2: rgba(20, 34, 43, .62);
  --focus: #dcebf1;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 14%, rgba(62, 91, 105, .34), transparent 30%),
    radial-gradient(circle at 86% 20%, rgba(45, 69, 82, .28), transparent 34%),
    linear-gradient(135deg, var(--bg), var(--bg-2) 52%, #10171d);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: -0.015em;
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }

.noise,
.grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
}
.noise {
  opacity: .12;
  background-image: linear-gradient(115deg, rgba(255,255,255,.05), transparent 40%, rgba(255,255,255,.03));
  mix-blend-mode: overlay;
}
.grid {
  opacity: .74;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(rgba(170,201,214,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(170,201,214,.06) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  mask-image: linear-gradient(to bottom, black 0 82%, transparent 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
}
.brand-name { font-size: 12px; letter-spacing: .18em; color: var(--muted); }
.nav { display: flex; align-items: center; gap: 22px; font-size: 13px; color: var(--muted); }
.nav a:hover { color: var(--text); }
.lang {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line-strong);
  padding: 8px 10px;
  cursor: pointer;
}

main { position: relative; z-index: 1; }
.hero {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 86px 24px 120px;
  min-height: 760px;
}
.hero-meta {
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-bottom: 96px;
}
.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 92px;
  align-items: end;
}
.eyebrow, .section-label, .tags, .read-more, .footer {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1 {
  max-width: 820px;
  margin: 16px 0 0;
  font-size: clamp(44px, 6.8vw, 92px);
  line-height: .96;
  font-weight: 320;
  letter-spacing: -0.07em;
}
.lead {
  max-width: 660px;
  margin: 34px 0 0;
  color: #bfd0d7;
  font-size: clamp(18px, 2.1vw, 24px);
  line-height: 1.42;
  font-weight: 300;
}
.hero-actions { display: flex; gap: 12px; margin-top: 42px; flex-wrap: wrap; }
.button {
  border: 1px solid var(--line-strong);
  padding: 13px 17px;
  color: var(--text);
  background: rgba(10, 18, 24, .24);
  font-size: 14px;
}
.button.primary { background: rgba(228, 238, 242, .09); }
.system-card {
  border: 1px solid var(--line-strong);
  background: var(--panel);
  padding: 18px;
  display: grid;
  gap: 10px;
  box-shadow: 0 28px 90px rgba(0,0,0,.18);
}
.axis {
  display: grid;
  gap: 22px;
  min-height: 96px;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.axis span { color: var(--text); font-size: 22px; font-weight: 310; }
.axis b { color: var(--dim); font-size: 11px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }
.geometry { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.line, .node { position: absolute; display: block; }
.line { height: 1px; background: var(--line-strong); transform-origin: left center; }
.l1 { width: 420px; right: 88px; top: 208px; transform: rotate(-34deg); }
.l2 { width: 580px; right: -40px; bottom: 198px; transform: rotate(17deg); opacity: .72; }
.node { width: 9px; height: 9px; border: 1px solid var(--line-strong); background: var(--bg); }
.n1 { right: 334px; top: 86px; }
.n2 { right: 156px; top: 315px; }
.n3 { right: 492px; bottom: 176px; }

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 86px 24px;
  border-top: 1px solid var(--line);
}
.split {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 80px;
}
.section h2 { margin: 0; font-size: clamp(32px, 4vw, 58px); line-height: 1; font-weight: 320; letter-spacing: -0.055em; }
.section p { max-width: 720px; color: #c3d0d6; font-size: 19px; line-height: 1.58; font-weight: 300; }
.text-link { display: inline-block; margin-top: 12px; color: var(--text); border-bottom: 1px solid var(--line-strong); padding-bottom: 5px; }
.cards { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 18px; margin-top: 34px; }
.note {
  min-height: 280px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.note.featured { min-height: 380px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.note h2, .note h3 { margin: 38px 0 0; font-size: 32px; line-height: 1.04; font-weight: 330; letter-spacing: -0.045em; }
.note h2 { font-size: 46px; }
.note p { font-size: 16px; line-height: 1.48; color: #adbdc4; }
.contact-row { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 24px; color: var(--text); }
.contact-row a, .contact-row span { border: 1px solid var(--line-strong); padding: 12px 14px; color: var(--muted); }
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px 64px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .site-header { align-items: flex-start; gap: 20px; }
  .nav { gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
  .hero { padding-top: 46px; min-height: auto; }
  .hero-meta { margin-bottom: 58px; gap: 18px; flex-direction: column; }
  .hero-layout, .split { grid-template-columns: 1fr; gap: 38px; }
  .system-card { max-width: 480px; }
  .cards { grid-template-columns: 1fr; }
  .footer { flex-direction: column; }
}