:root {
  --dtl-red: #a70f18;
  --dtl-blue: #315bb3;
  --ink: #2d2d2d;
  --muted: #5f6470;
  --panel: #f7f6fc;
  --line: #333333;
  --border: #b9bfce;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 0 8%;
  background: var(--dtl-red);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  display: block;
  height: 44px;
  width: auto;
  background: var(--white);
}

.page {
  width: min(920px, calc(100% - 32px));
  margin: 76px auto 88px;
}

.request-panel {
  border: 3px solid var(--line);
  padding: 52px 48px 48px;
}

.panel-heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-heading span {
  height: 3px;
  background: var(--line);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  text-align: center;
}

.intro {
  max-width: 680px;
  margin: 0 auto 34px;
  color: var(--muted);
  font-size: 1.08rem;
  text-align: center;
}

form {
  max-width: 640px;
  margin: 0 auto;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  min-height: 46px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfaff;
  color: var(--ink);
  font: inherit;
}

input:focus {
  border-color: var(--dtl-blue);
  outline: 3px solid rgba(49, 91, 179, 0.18);
}

.check {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
  margin: 8px 0 24px;
  color: var(--ink);
  font-weight: 400;
}

.check input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

button {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--dtl-blue);
  border-radius: 8px;
  background: var(--dtl-blue);
  color: var(--white);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:hover {
  background: #264b98;
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.message {
  display: none;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 8px;
  font-weight: 700;
}

.message.is-visible {
  display: block;
}

.message.success {
  border: 1px solid #247a45;
  background: #eef8f1;
  color: #155c31;
}

.message.error {
  border: 1px solid #b42318;
  background: #fff0ef;
  color: #8a1f17;
}

.site-footer {
  padding: 24px 16px;
  background: var(--dtl-red);
  color: var(--white);
  text-align: center;
  font-weight: 700;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--white);
}

@media (max-width: 680px) {
  .site-header {
    padding: 0 20px;
  }

  .page {
    margin: 36px auto 48px;
  }

  .request-panel {
    border-width: 2px;
    padding: 32px 20px 28px;
  }

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

  .panel-heading span {
    display: none;
  }

  .field-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}