:root {
  color-scheme: dark;
  --ink: #f5f7fb;
  --muted: #9ca8b8;
  --panel: #10151d;
  --line: #283341;
  --accent: #55e0c2;
  --accent-2: #6da4ff;
  --bg: #070a0f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 2%, rgba(68, 111, 177, .22), transparent 30rem),
    radial-gradient(circle at 15% 25%, rgba(50, 161, 138, .12), transparent 34rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: inherit; }
.site-header {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-size: 1.06rem; font-weight: 760; letter-spacing: .01em; }
.brand > span:last-child span { color: var(--accent); }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--accent); border-radius: 9px; color: var(--accent); box-shadow: inset 0 0 18px rgba(85,224,194,.12); }
nav { display: flex; align-items: center; gap: 26px; }
nav a { color: var(--muted); text-decoration: none; font-size: .9rem; font-weight: 620; }
nav a:hover { color: var(--ink); }
.nav-cta { padding: 9px 14px; border: 1px solid var(--line); border-radius: 8px; }

.hero, .section, .closing, footer { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.hero { min-height: 690px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 72px; align-items: center; padding: 82px 0; }
.eyebrow { margin: 0 0 16px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .76rem; font-weight: 750; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: balance; }
h1 { margin: 0; max-width: 780px; font-size: clamp(3.5rem, 7vw, 6.7rem); line-height: .97; letter-spacing: -.055em; }
h1 span { color: transparent; background: linear-gradient(95deg, var(--accent), var(--accent-2)); background-clip: text; -webkit-background-clip: text; }
.hero-summary { max-width: 620px; margin: 28px 0 0; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border-radius: 9px; text-decoration: none; font-weight: 720; font-size: .93rem; }
.button.primary { color: #05110e; background: var(--accent); }
.button.secondary { border: 1px solid var(--line); background: rgba(255,255,255,.025); }

.system-card { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(145deg, rgba(18,25,35,.93), rgba(9,13,19,.9)); box-shadow: 0 25px 80px rgba(0,0,0,.34); }
.system-card-top { display: flex; justify-content: space-between; color: var(--muted); font: 700 .68rem ui-monospace, monospace; letter-spacing: .13em; }
.status { color: var(--accent); }
.status i { display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.system-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 27px 0; }
.system-grid div { min-height: 112px; padding: 18px; display: flex; flex-direction: column; justify-content: flex-end; border: 1px solid rgba(255,255,255,.08); border-radius: 10px; background: rgba(255,255,255,.025); }
.system-grid strong { color: var(--accent); font: 700 1.7rem ui-monospace, monospace; }
.system-grid span { color: var(--muted); font-size: .82rem; }
.signal { display: flex; gap: 6px; height: 31px; align-items: flex-end; }
.signal span { flex: 1; border-radius: 2px; background: linear-gradient(var(--accent), rgba(85,224,194,.12)); }
.signal span:nth-child(1) { height: 28%; }.signal span:nth-child(2) { height: 72%; }.signal span:nth-child(3) { height: 46%; }.signal span:nth-child(4) { height: 88%; }.signal span:nth-child(5) { height: 58%; }

.section { padding: 110px 0; border-top: 1px solid rgba(255,255,255,.08); }
.section-heading { display: grid; grid-template-columns: .7fr 1.3fr; gap: 40px; align-items: start; margin-bottom: 48px; }
h2 { margin: 0; font-size: clamp(2.25rem, 4vw, 4rem); line-height: 1.08; letter-spacing: -.04em; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.service-grid article { min-height: 270px; padding: 26px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 13px; background: rgba(16,21,29,.76); }
.service-number { color: var(--accent); font: 700 .72rem ui-monospace, monospace; letter-spacing: .13em; }
h3 { margin: auto 0 10px; font-size: 1.25rem; letter-spacing: -.02em; }
.service-grid p { margin: 0; color: var(--muted); font-size: .94rem; }
.service-grid article.featured { background: linear-gradient(145deg, rgba(53,138,120,.2), rgba(29,51,85,.22)); }
.featured a { margin-top: 18px; color: var(--accent); text-decoration: none; font-weight: 730; }

.approach { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.approach ol { margin: 0; padding: 0; list-style: none; }
.approach li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 25px 0; border-top: 1px solid var(--line); }
.approach li > span { color: var(--accent); font: 700 .74rem ui-monospace, monospace; }
.approach strong { display: block; font-size: 1.08rem; }
.approach p { margin: 5px 0 0; color: var(--muted); }
.closing { padding: 120px 30px; text-align: center; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(120deg, rgba(85,224,194,.09), rgba(109,164,255,.10)); }
.closing p:last-child { color: var(--muted); }
footer { padding: 38px 0; display: flex; justify-content: space-between; color: var(--muted); font-size: .78rem; }

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .system-card { max-width: 560px; }
  .service-grid { grid-template-columns: 1fr 1fr; }
  .approach, .section-heading { grid-template-columns: 1fr; gap: 35px; }
}

@media (max-width: 600px) {
  .site-header { min-height: 70px; }
  nav > a:not(.nav-cta) { display: none; }
  .hero { padding: 68px 0 84px; gap: 46px; }
  h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .service-grid { grid-template-columns: 1fr; }
  .service-grid article { min-height: 225px; }
  .section { padding: 78px 0; }
  .closing { width: min(100% - 24px, 1180px); padding: 78px 22px; }
  footer { flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: no-preference) {
  .status i { animation: pulse 2s ease-in-out infinite; }
  @keyframes pulse { 50% { opacity: .42; } }
}