:root {
  color-scheme: dark;
  --bg: #08090b;
  --panel: #12151a;
  --panel-2: #0d1014;
  --line: #262c35;
  --line-strong: #394353;
  --text: #f5f7fa;
  --muted: #99a3b0;
  --blue: #2b8cff;
  --blue-soft: rgba(43, 140, 255, 0.14);
  --green: #2bd576;
  --amber: #ffbd52;
  --max: 1120px;
  --radius: 18px;
  --font: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(900px 560px at 80% -12%, rgba(43, 140, 255, 0.13), transparent 60%),
    radial-gradient(700px 500px at -10% 35%, rgba(43, 213, 118, 0.055), transparent 65%),
    var(--bg);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.shell { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }

.site-head {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(57, 67, 83, 0.65);
  background: rgba(8, 9, 11, 0.82);
  backdrop-filter: blur(18px);
}
.head-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
}
.brand img { width: 31px; height: 31px; border-radius: 9px; }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 11px;
  border-radius: 9px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); background: var(--blue-soft); }

.hero { padding: clamp(72px, 10vw, 128px) 0 72px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  color: #b8d8ff;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--blue); }
h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}
.lede {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid rgba(43, 140, 255, 0.55);
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(180deg, #3895ff, #1674df);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 12px 40px rgba(43, 140, 255, 0.18);
}
.button:hover { filter: brightness(1.08); }
.button.secondary { color: var(--text); background: transparent; border-color: var(--line-strong); box-shadow: none; }

.section { padding: 34px 0 84px; }
.section-head { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr); gap: 40px; margin-bottom: 30px; }
.section h2 { margin: 0; font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.08; letter-spacing: -0.035em; }
.section-intro { margin: 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.card {
  position: relative;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(20, 24, 30, 0.94), rgba(12, 14, 18, 0.94));
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(43, 140, 255, 0.7), transparent);
  opacity: 0.7;
}
.card-kicker { color: var(--blue); font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.card h3 { margin: 10px 0 8px; font-size: 1.08rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.card a { color: #b8d8ff; }
.card ul { margin: 14px 0 0; padding-left: 19px; color: var(--muted); font-size: 14px; }
.card li + li { margin-top: 7px; }

.status-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.status-card { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.status-value {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 2px;
  padding: 5px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
}
.status-value::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--amber); }
.status-value.ok { color: #baf4d0; border-color: rgba(43, 213, 118, 0.35); background: rgba(43, 213, 118, 0.07); }
.status-value.ok::before { background: var(--green); box-shadow: 0 0 10px rgba(43, 213, 118, 0.6); }
.status-value.fail { color: #ffcac2; border-color: rgba(255, 102, 82, 0.35); }
.status-value.fail::before { background: #ff6652; }

.principles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.principle { min-height: 160px; padding: 22px; background: rgba(13, 16, 20, 0.8); }
.principle + .principle { border-left: 1px solid var(--line); }
.principle strong { display: block; margin-bottom: 8px; font-size: 14px; }
.principle span { color: var(--muted); font-size: 13px; }
.number { color: var(--blue); font-family: var(--mono); font-size: 11px; }

.vision-band {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 36px;
  align-items: center;
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid rgba(43, 140, 255, 0.35);
  border-radius: 24px;
  background: linear-gradient(120deg, rgba(43, 140, 255, 0.13), rgba(18, 21, 26, 0.7));
}
.vision-band h2 { margin: 0 0 14px; }
.vision-band p { margin: 0; color: var(--muted); }
.vision-list { margin: 0; padding-left: 20px; color: #d9e7f8; font-size: 14px; }
.vision-list li + li { margin-top: 8px; }

.site-foot { margin-top: 60px; border-top: 1px solid var(--line); color: var(--muted); }
.foot-inner { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 18px; font-size: 12px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.foot-links a { text-decoration: none; }
.foot-links a:hover { color: var(--text); }

@media (max-width: 820px) {
  .head-inner { min-height: 64px; align-items: flex-start; padding: 14px 0; }
  .site-nav { justify-content: flex-end; flex-wrap: wrap; }
  .site-nav a { min-width: 44px; padding: 6px 8px; font-size: 12px; }
  .section-head, .vision-band { grid-template-columns: 1fr; gap: 18px; }
  .grid { grid-template-columns: 1fr; }
  .status-grid { grid-template-columns: 1fr; }
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principle:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .principle:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 520px) {
  .shell { width: min(var(--max), calc(100% - 28px)); }
  .head-inner { display: block; }
  .site-nav { margin-top: 12px; justify-content: flex-start; }
  .site-nav a { justify-content: center; }
  .hero { padding-top: 58px; }
  .principles { grid-template-columns: 1fr; }
  .principle + .principle { border-left: 0; border-top: 1px solid var(--line); }
  .status-card { display: block; }
  .status-value { margin-top: 16px; }
  .foot-inner { align-items: flex-start; flex-direction: column; justify-content: center; padding: 20px 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }