:root {
  color-scheme: light;
  --ink: #15233a;
  --muted: #58677c;
  --line: #dbe3ec;
  --accent: #0b63ce;
  --accent-dark: #084d9f;
  --surface: #ffffff;
  --canvas: #edf4fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(145deg, #e7f2ff 0%, var(--canvas) 48%, #f5f8fc 100%);
  color: var(--ink);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 18px;
}

.card {
  width: min(100%, 620px);
  padding: clamp(26px, 6vw, 52px);
  background: var(--surface);
  border: 1px solid rgba(21, 35, 58, .1);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(33, 61, 94, .14);
}

.mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 24px;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
  font-size: 30px;
  font-weight: 750;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: clamp(30px, 7vw, 46px); line-height: 1.08; letter-spacing: -.035em; }
h2 { margin: 0 0 8px; font-size: 18px; }
.intro { margin: 18px 0 28px; color: var(--muted); font-size: 18px; }
form { display: grid; gap: 10px; }
label { font-weight: 700; }

input, button {
  width: 100%;
  min-height: 52px;
  border-radius: 12px;
  font: inherit;
}

input {
  border: 1px solid #aebccd;
  padding: 12px 14px;
  color: var(--ink);
  background: #fff;
}

input:focus { outline: 3px solid rgba(11, 99, 206, .2); border-color: var(--accent); }

button {
  margin-top: 6px;
  border: 0;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 750;
  cursor: pointer;
}

button:hover { background: var(--accent-dark); }
.steps { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--line); }
ol { margin: 0; padding-left: 22px; }
li + li { margin-top: 7px; }
.notice { margin: 24px 0 0; padding: 14px 16px; border-radius: 12px; background: #f1f6fc; color: var(--muted); font-size: 14px; }
details { margin-top: 18px; color: var(--muted); font-size: 14px; }
summary { cursor: pointer; font-weight: 700; color: var(--ink); }

@media (max-width: 480px) {
  main { padding: 0; place-items: stretch; }
  .card { min-height: 100vh; border: 0; border-radius: 0; box-shadow: none; }
}