:root {
  color-scheme: light;
  --ink: #10211d;
  --muted: #60716c;
  --green: #08735a;
  --green-dark: #075844;
  --green-soft: #eaf7f2;
  --line: #dce8e3;
  --paper: #ffffff;
  --back: #f1f7f4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(13, 142, 107, .12), transparent 28rem),
    radial-gradient(circle at 88% 90%, rgba(8, 115, 90, .08), transparent 30rem),
    var(--back);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-content: center;
  gap: 20px;
  padding: 32px 18px 22px;
}

.card {
  width: min(100%, 620px);
  padding: clamp(28px, 6vw, 52px);
  background: rgba(255, 255, 255, .96);
  border: 1px solid rgba(220, 232, 227, .9);
  border-radius: 28px;
  box-shadow: 0 24px 70px rgba(17, 55, 44, .12);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 32px;
  color: #063e30;
  font-weight: 800;
  letter-spacing: .08em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: white;
  background: var(--green);
  border-radius: 11px;
  letter-spacing: 0;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.status span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #14a779;
  box-shadow: 0 0 0 5px rgba(20, 167, 121, .12);
}

h1 {
  max-width: 500px;
  margin: 0;
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.lead {
  max-width: 510px;
  margin: 18px 0 26px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.download-form { display: grid; gap: 9px; }
.download-form label { color: #31433e; font-size: 13px; font-weight: 750; }
.download-form input {
  width: 100%;
  height: 50px;
  padding: 0 14px;
  color: var(--ink);
  background: white;
  border: 1px solid #cddbd5;
  border-radius: 12px;
  font: inherit;
  outline: none;
}
.download-form input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(8, 115, 90, .12); }

.download {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  padding: 16px 22px;
  color: white;
  background: var(--green);
  border-radius: 15px;
  box-shadow: 0 10px 24px rgba(8, 115, 90, .2);
  font-size: 17px;
  font-weight: 760;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}

.download:hover { background: var(--green-dark); transform: translateY(-1px); box-shadow: 0 13px 28px rgba(8, 115, 90, .24); }
.download:focus-visible { outline: 3px solid rgba(8, 115, 90, .28); outline-offset: 3px; }
.compatibility { margin: 10px 0 30px; text-align: center; color: var(--muted); font-size: 13px; }

.steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li { display: flex; align-items: center; gap: 14px; }
.steps li > span {
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: var(--green-dark);
  background: var(--green-soft);
  border-radius: 50%;
  font-weight: 800;
}
.steps strong, .steps small { display: block; }
.steps strong { margin-bottom: 3px; font-size: 15px; }
.steps small { color: var(--muted); font-size: 13px; line-height: 1.4; }

.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 30px;
  padding: 16px;
  color: #22453b;
  background: #f4faf7;
  border: 1px solid var(--line);
  border-radius: 15px;
}
.notice svg { flex: 0 0 20px; margin-top: 1px; color: var(--green); }
.notice p { margin: 0; font-size: 13px; line-height: 1.55; }

footer { color: #71817c; text-align: center; font-size: 12px; }
footer a { color: inherit; text-underline-offset: 3px; }
footer a:hover { color: var(--green); }

@media (max-width: 520px) {
  .shell { display: block; padding: 0; background: var(--paper); }
  .card { min-height: calc(100vh - 42px); border: 0; border-radius: 0; box-shadow: none; }
  footer { padding: 13px 16px 16px; background: var(--paper); }
}

@media (prefers-reduced-motion: reduce) {
  .download { transition: none; }
}