:root {
  color-scheme: dark;
  --background: #07111f;
  --surface: rgba(20, 39, 64, 0.72);
  --surface-strong: #132845;
  --text: #f4f8ff;
  --muted: #a7b8cc;
  --line: rgba(255, 255, 255, 0.12);
  --blue: #5da8ff;
  --cyan: #6be4ff;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(35, 116, 213, 0.28), transparent 35rem),
    radial-gradient(circle at 90% 20%, rgba(42, 204, 255, 0.13), transparent 30rem),
    var(--background);
  line-height: 1.58;
}

a { color: var(--cyan); }
a:hover { color: #b7f3ff; }

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7, 17, 31, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
}

.nav-links { display: flex; gap: 22px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); }

main { padding: 72px 0 88px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: center;
  gap: 64px;
  padding: 38px 0 76px;
}

.hero img {
  width: min(100%, 260px);
  border-radius: 25%;
  filter: drop-shadow(0 30px 60px rgba(0, 112, 255, 0.35));
}

.eyebrow {
  color: var(--blue);
  font-size: 0.84rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.035em; }
h1 { margin: 13px 0 20px; max-width: 760px; font-size: clamp(2.7rem, 6vw, 5.6rem); }
h2 { margin: 0 0 18px; font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { margin: 0 0 10px; font-size: 1.15rem; }

.lede { max-width: 700px; color: var(--muted); font-size: 1.16rem; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: var(--surface);
  text-decoration: none;
  font-weight: 680;
}
.button.primary { color: #03101f; background: linear-gradient(135deg, var(--cyan), var(--blue)); border: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0 68px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}
.card p, .muted { color: var(--muted); }

.content {
  max-width: 800px;
}
.content section { margin: 44px 0; }
.content li { margin: 9px 0; }

.notice {
  padding: 18px 20px;
  border: 1px solid rgba(93, 168, 255, 0.36);
  border-radius: 14px;
  background: rgba(51, 128, 224, 0.12);
}

footer {
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; }

@media (max-width: 760px) {
  .nav-links { gap: 13px; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding-top: 10px; }
  .hero img { width: 180px; order: -1; }
  .grid { grid-template-columns: 1fr; }
}