:root {
  color-scheme: light;
  --ink:#18252e;
  --muted:#53616d;
  --brand:#126ca8;
  --line:#d9e2e9;
  --bg:#f4f7fa;
}
* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,
       "Segoe UI",sans-serif;
}
main {
  max-width:760px;
  margin:0 auto;
  padding:28px 18px 70px;
}
h1 {
  font-size:clamp(2rem,6vw,3rem);
  line-height:1.12;
  letter-spacing:-.035em;
  margin:26px 0 18px;
}
h2 {
  font-size:clamp(1.4rem,4vw,1.9rem);
  line-height:1.2;
  margin:0 0 20px;
}
p { margin:0 0 18px; }
a { color:var(--brand); }
form {
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin:24px 0;
  padding:26px;
  border:1px solid var(--line);
  border-radius:20px;
  background:#fff;
  box-shadow:0 8px 30px rgba(18,38,55,.06);
}
form label {
  display:block;
  font-size:14px;
  font-weight:650;
  color:var(--ink);
}
input,select,textarea {
  display:block;
  width:100%;
  max-width:100%;
  min-width:0;
  min-height:48px;
  padding:12px 14px;
  margin-top:6px;
  border:1px solid #c6d3dc;
  border-radius:10px;
  background:#fff;
  color:var(--ink);
  font:inherit;
  font-size:16px;
}
input:focus,select:focus,textarea:focus {
  outline:3px solid rgba(18,108,168,.17);
  border-color:var(--brand);
}
input[type=checkbox] {
  display:inline-block;
  width:20px;
  height:20px;
  min-height:0;
  padding:0;
  margin:0 8px 0 0;
  vertical-align:middle;
  accent-color:var(--brand);
}
form button,button[type=submit] {
  display:block;
  width:100%;
  min-height:52px;
  border:0;
  border-radius:12px;
  padding:14px 20px;
  background:var(--brand);
  color:#fff;
  font:700 16px/1.3 system-ui,sans-serif;
  cursor:pointer;
}
form button:hover { background:#095789; }
small { color:var(--muted); }
section { margin:30px 0; }
.progress {
  width:100%;
  height:12px;
  border-radius:99px;
  background:#e4ebf0;
  overflow:hidden;
}
.progress span {
  display:block;
  height:100%;
  background:var(--brand);
}
@media(max-width:600px) {
  main { padding:20px 16px 60px; }
  form { padding:20px 16px; border-radius:16px; }
  h1 { margin-top:22px; }
}

.group-promo {
 background:#121418;
 color:#f6f7f8;
 padding:24px;
 border-radius:18px;
 margin:30px 0;
}
.group-promo h2 { color:#fff; }
.group-promo p { color:#a6adb7; }
.group-promo-button {
 display:block;
 text-align:center;
 background:#f2c94c;
 color:#111;
 padding:14px;
 border-radius:10px;
 text-decoration:none;
 font-weight:800;
}