:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", sans-serif;
  background: #070a11;
  color: #f6f8ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% -10%, rgba(38, 193, 255, .25), transparent 34rem),
    radial-gradient(circle at 95% 5%, rgba(78, 92, 255, .2), transparent 30rem),
    #070a11;
}

a { color: #54c8ff; }

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.brand { display: flex; align-items: center; gap: 14px; margin-bottom: 38px; }
.mark {
  width: 54px; height: 54px; border-radius: 17px;
  display: grid; place-items: center;
  font-size: 28px; font-weight: 800;
  background: linear-gradient(145deg, #25d2f7, #3f66ff);
  box-shadow: 0 16px 40px rgba(46, 132, 255, .28);
}
.brand h1 { margin: 0; font-size: 25px; letter-spacing: -.02em; }
.brand p { margin: 3px 0 0; color: #8f98aa; }

.hero, .card {
  border: 1px solid rgba(255, 255, 255, .09);
  background: rgba(17, 22, 34, .78);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  box-shadow: 0 26px 80px rgba(0, 0, 0, .28);
}

.hero { padding: 38px; }
.hero h2 { margin: 0 0 12px; font-size: clamp(30px, 6vw, 54px); line-height: 1.04; letter-spacing: -.04em; }
.hero p { color: #aab2c3; font-size: 17px; line-height: 1.75; }
.pill { display: inline-flex; padding: 7px 12px; border-radius: 999px; background: rgba(72, 184, 255, .13); color: #7bd7ff; font-size: 13px; margin-bottom: 18px; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 16px; }
.card { padding: 26px; }
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p, .card li { color: #aab2c3; line-height: 1.7; }
.card ul { padding-left: 20px; }
.footer { margin-top: 28px; color: #727c90; font-size: 13px; line-height: 1.7; text-align: center; }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 18px; border-radius: 14px;
  border: 1px solid rgba(255,255,255,.11);
  background: linear-gradient(145deg, #24c9ef, #4167ff);
  color: white; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
}

.button.secondary { background: #171d2a; color: #cdd4e2; }
.row { display: flex; flex-wrap: wrap; gap: 10px; }

@media (max-width: 680px) {
  .shell { width: min(100% - 22px, 920px); padding-top: 24px; }
  .hero { padding: 26px 22px; }
  .grid { grid-template-columns: 1fr; }
}