:root {
  color-scheme: light dark;
  --ink: #241b36;
  --muted: #6f667d;
  --card: rgba(255, 255, 255, 0.84);
  --line: rgba(92, 66, 126, 0.13);
  --rose: #dd5f8d;
  --orchid: #8e5bd2;
  --blue: #4d78d8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 0%, rgba(235, 106, 155, 0.2), transparent 34%),
    radial-gradient(circle at 92% 8%, rgba(87, 117, 225, 0.2), transparent 35%),
    linear-gradient(145deg, #fff 0%, #f7f2fc 52%, #eef3ff 100%);
}

main {
  width: min(1040px, calc(100% - 36px));
  margin: 0 auto;
  padding: 44px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  font-weight: 850;
}

.mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  font-size: 23px;
  background: linear-gradient(135deg, var(--rose), var(--orchid) 52%, var(--blue));
  box-shadow: 0 14px 35px rgba(115, 71, 177, 0.3);
}

select {
  max-width: 185px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--card);
  font: inherit;
  font-weight: 700;
}

.hero { padding: 72px 0 38px; }

.eyebrow {
  margin: 0 0 12px;
  color: var(--orchid);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(3rem, 9vw, 6.7rem);
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.lead {
  max-width: 780px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.4vw, 1.38rem);
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 178px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  box-shadow: 0 18px 54px rgba(62, 42, 92, 0.08);
  backdrop-filter: blur(20px);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1.22rem;
  line-height: 1.2;
}

.card p, .technical p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.technical {
  margin-top: 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.63);
}

.technical h2 { margin: 0 0 12px; }
.technical h3 { margin: 26px 0 8px; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 30px;
}

nav a {
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #6843ae;
  background: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-weight: 800;
}

nav a.primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--rose), var(--orchid) 55%, var(--blue));
}

footer {
  margin-top: 42px;
  color: var(--muted);
  line-height: 1.6;
}

footer a { color: #6843ae; font-weight: 800; }

@media (max-width: 700px) {
  main { width: min(100% - 28px, 1040px); padding-top: 24px; }
  .topbar { align-items: flex-start; }
  .brand span:last-child { display: none; }
  .hero { padding-top: 54px; }
  .grid { grid-template-columns: 1fr; }
  .card { min-height: 0; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f7f2ff;
    --muted: #c5bdd3;
    --card: rgba(31, 24, 49, 0.82);
    --line: rgba(229, 214, 255, 0.12);
  }

  body {
    background:
      radial-gradient(circle at 12% 0%, rgba(216, 77, 132, 0.2), transparent 34%),
      radial-gradient(circle at 92% 8%, rgba(74, 105, 211, 0.2), transparent 35%),
      linear-gradient(145deg, #0f0b19 0%, #181127 54%, #11182c 100%);
  }

  .technical { background: rgba(25, 19, 40, 0.67); }
  nav a { color: #d3b7ff; background: rgba(43, 33, 65, 0.7); }
  footer a { color: #d3b7ff; }
}