:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080a09;
  color: #f4f7f5;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 28px 18px;
  background:
    radial-gradient(circle at 20% 10%, rgba(67, 214, 142, .18), transparent 34rem),
    linear-gradient(150deg, #080a09 0%, #0e1511 100%);
}

.card {
  width: min(100%, 560px);
  padding: clamp(28px, 6vw, 52px);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 28px;
  background: rgba(14, 19, 16, .88);
  box-shadow: 0 32px 80px rgba(0, 0, 0, .42);
  backdrop-filter: blur(18px);
}

.mark {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  margin-bottom: 30px;
  border-radius: 20px;
  background: #42d98d;
  color: #06110b;
  font-size: 34px;
  font-weight: 900;
}

.eyebrow {
  margin: 0 0 10px;
  color: #42d98d;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
}

h1 { margin: 0; font-size: clamp(34px, 8vw, 52px); line-height: 1.02; letter-spacing: -.045em; }
.intro { margin: 20px 0 28px; color: #bdc8c1; font-size: 18px; line-height: 1.6; }

.download {
  display: block;
  padding: 17px 22px;
  border-radius: 14px;
  background: #42d98d;
  color: #06110b;
  text-align: center;
  text-decoration: none;
  font-size: 17px;
  font-weight: 850;
  transition: transform .15s ease, background .15s ease;
}

.download:hover { background: #65e6a6; transform: translateY(-2px); }
.download:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }

.steps { margin-top: 36px; padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, .1); }
.steps h2 { margin: 0 0 15px; font-size: 18px; }
.steps ol { margin: 0; padding-left: 22px; color: #d6ddd8; line-height: 1.8; }
.note { margin: 28px 0 0; color: #8f9b94; font-size: 13px; line-height: 1.55; }
.version { margin: 20px 0 0; color: #69756e; font-size: 12px; }