:root{
  --bg1:#eef6ff;
  --bg2:#f8fbff;
  --bg3:#eaf1ff;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#dbe4f0;
  --primary:#0ea5e9;
  --primary2:#2563eb;
  --okbg:#ecfdf5;
  --okbd:#a7f3d0;
  --oktx:#065f46;
  --errbg:#fef2f2;
  --errbd:#fecaca;
  --errtx:#991b1b;
}

*{box-sizing:border-box}
html,body{min-height:100%}

body{
  margin:0;
  padding:24px 14px;
  color:var(--text);
  font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(14,165,233,.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(37,99,235,.14), transparent 55%),
    linear-gradient(180deg,var(--bg1) 0%,var(--bg2) 45%,var(--bg3) 100%);
}

body > div:first-of-type,
body > main:first-of-type,
body > section:first-of-type,
.wrap,.container,.box,.card{
  max-width:460px;
  margin:0 auto;
  background:rgba(255,255,255,.95);
  border:1px solid rgba(219,228,240,.95);
  border-radius:22px;
  box-shadow:0 18px 50px rgba(15,23,42,.10);
  padding:20px 16px;
}

h1,h2,h3{margin:0 0 8px;color:#0f172a;line-height:1.15}
h1{font-size:28px}
h2{font-size:22px}
h3{font-size:18px}

p{margin:0 0 12px}
.muted{color:var(--muted);font-size:13px;line-height:1.5}
form{margin:12px 0 0}

input[type="tel"],
input[type="text"],
input[type="password"],
input[type="number"],
input[inputmode]{
  width:100%;
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px 15px;
  font-size:16px;
  color:var(--text);
  background:#fff;
  outline:none;
  box-shadow:0 1px 2px rgba(15,23,42,.03);
  transition:border-color .18s ease, box-shadow .18s ease;
}

input:focus{
  border-color:rgba(14,165,233,.85);
  box-shadow:0 0 0 4px rgba(14,165,233,.14);
}

button,
input[type="submit"]{
  width:100%;
  border:0;
  border-radius:16px;
  padding:14px 16px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary2) 100%);
  box-shadow:0 10px 24px rgba(37,99,235,.20);
  cursor:pointer;
}

.ok,.err{
  border-radius:16px;
  padding:12px 14px;
  margin:12px 0;
  border:1px solid;
  font-size:14px;
  line-height:1.45;
}

.ok{background:var(--okbg);border-color:var(--okbd);color:var(--oktx)}
.err{background:var(--errbg);border-color:var(--errbd);color:var(--errtx)}

label{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin:12px 0 14px;
  color:#334155;
  font-size:14px;
  line-height:1.45;
}

label input[type="checkbox"]{
  margin:2px 0 0;
  flex:0 0 auto;
}

a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}

hr{
  border:0;
  border-top:1px solid #e7edf7;
  margin:16px 0;
}

@media (max-width:480px){
  body{padding:14px 10px}
  body > div:first-of-type,
  body > main:first-of-type,
  body > section:first-of-type,
  .wrap,.container,.box,.card{
    padding:18px 14px 14px;
    border-radius:20px;
  }
  h1{font-size:24px}
}