:root {
  color-scheme: dark;
  --bg: #050a14;
  --panel: rgba(9, 19, 38, 0.84);
  --panel-strong: rgba(10, 25, 52, 0.94);
  --text: #f5f7ff;
  --muted: #aeb8d8;
  --blue: #25b8ff;
  --violet: #c759ff;
  --green: #68ee78;
  --border: rgba(81, 168, 255, 0.44);
  --border-soft: rgba(161, 105, 255, 0.28);
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 20% 8%, rgba(37, 184, 255, 0.2), transparent 30rem),
    radial-gradient(circle at 86% 4%, rgba(199, 89, 255, 0.18), transparent 28rem),
    linear-gradient(180deg, #061023 0%, var(--bg) 58%, #02050c 100%);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--blue);
}

.shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(37, 184, 255, 0.18), rgba(199, 89, 255, 0.18));
  box-shadow: 0 0 30px rgba(37, 184, 255, 0.28);
  font-weight: 800;
}

.brand-text {
  display: grid;
  gap: 0;
}

.brand-title {
  font-size: 16px;
  font-weight: 800;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  gap: 28px;
  padding: 76px 0 54px;
}

.hero-panel,
.content-card {
  border: 1px solid var(--border);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(9, 19, 38, 0.96), rgba(8, 14, 30, 0.86)),
    var(--panel);
  box-shadow: var(--shadow), inset 0 0 40px rgba(37, 184, 255, 0.05);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px);
}

.hero-panel::after {
  position: absolute;
  inset: 0 0 auto auto;
  width: 220px;
  height: 220px;
  background:
    linear-gradient(90deg, rgba(37, 184, 255, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(199, 89, 255, 0.16) 1px, transparent 1px);
  background-size: 18px 18px;
  content: "";
  mask-image: radial-gradient(circle at top right, #000 0, transparent 68%);
}

.eyebrow {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 780px;
  margin: 12px 0 20px;
  font-size: clamp(42px, 7vw, 80px);
  line-height: 1.02;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2.4vw, 24px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 18px;
  background: rgba(37, 184, 255, 0.08);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  border-color: var(--border-soft);
  background: rgba(199, 89, 255, 0.08);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}

.feature {
  border: 1px solid rgba(81, 168, 255, 0.24);
  border-radius: 18px;
  padding: 20px;
  background: rgba(7, 16, 33, 0.72);
}

.feature h2,
.content-card h1,
.content-card h2 {
  margin-top: 0;
}

.feature h2 {
  margin-bottom: 8px;
  font-size: 18px;
}

.feature p,
.content-card p,
.content-card li {
  color: var(--muted);
}

.content {
  padding: 30px 0 64px;
}

.content-card {
  padding: clamp(24px, 4vw, 48px);
}

.content-card h1 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.08;
}

.content-card h2 {
  margin-top: 34px;
  color: var(--text);
  font-size: 22px;
}

.content-card ul {
  padding-left: 22px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
}

.footer {
  border-top: 1px solid rgba(81, 168, 255, 0.18);
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 34px;
  }
}