:root {
  --blue: #005c97;
  --blue-dark: #003f72;
  --line: #c9d8e8;
  --text: #08233f;
  --muted: #52677e;
  --bg: #eaf2f8;
  --ok: #15803d;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.page {
  width: 100%;
  min-height: 100vh;
  padding: 18px;
}

.form-shell {
  max-width: 980px;
  margin: 0 auto;
}

.hero {
  min-height: 220px;
  padding: 28px;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.brand,
.unit {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 28px;
  font-weight: 900;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  color: var(--blue);
  font-size: 14px;
}

.unit {
  float: right;
  font-size: 28px;
}

.hero h1 {
  clear: both;
  margin: 54px 0 0;
  text-align: center;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1;
}

.intro-card,
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 14px 34px rgba(2, 43, 76, 0.08);
}

.intro-card {
  margin-top: 18px;
  border-top: 14px solid var(--blue);
  border-radius: 10px 10px 0 0;
  padding: 26px 36px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.18;
}

.intro-card p {
  margin: 0;
}

.form-card {
  border-top: 0;
  border-radius: 0 0 10px 10px;
  padding: 30px 36px 36px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

label {
  display: grid;
  gap: 8px;
  font-weight: 800;
  color: var(--blue-dark);
}

.full {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  font: inherit;
  color: var(--text);
  background: #f8fbfe;
}

textarea {
  resize: vertical;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

button {
  margin-top: 22px;
  min-height: 50px;
  border: 0;
  border-radius: 8px;
  padding: 0 24px;
  background: var(--blue);
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.message {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #eff6ff;
  font-weight: 800;
}

.message.ok {
  color: var(--ok);
  background: #ecfdf3;
}

.message.error {
  color: var(--danger);
  background: #fef2f2;
}

@media (max-width: 720px) {
  .page {
    padding: 10px;
  }

  .hero {
    min-height: 180px;
    padding: 18px;
  }

  .brand,
  .unit {
    font-size: 20px;
  }

  .unit {
    float: none;
    margin-left: 12px;
  }

  .hero h1 {
    margin-top: 40px;
  }

  .intro-card,
  .form-card {
    padding-left: 18px;
    padding-right: 18px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}