* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #1f2a37;
  --muted: #5b6674;
  --line: #d7dde3;
  --accent: #0b6aa2;
  --accent-dark: #084d77;
  --bg: #f5f7fa;
  --card: #ffffff;
  --danger: #c0392b;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--accent-dark);
  text-decoration: underline;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: 1100px;
  margin: 0 auto;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--ink);
}

.brand img {
  width: 54px;
  height: 58px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page {
  max-width: 1100px;
  margin: 24px auto 60px;
  padding: 0 20px;
}

.page-header {
  margin-bottom: 20px;
}

.page-header h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.page-header p {
  margin: 0;
  color: var(--muted);
}

.notice {
  padding: 12px 14px;
  border-radius: 6px;
  margin-bottom: 18px;
  font-size: 14px;
}

.notice.success {
  background: #e0f4e8;
  color: #145a32;
  border: 1px solid #9ed4b6;
  font-weight: 700;
  font-size: 15px;
  padding: 16px 18px;
  box-shadow: 0 10px 24px rgba(20, 90, 50, 0.12);
}

.notice.error {
  background: #fdecea;
  color: #8a1c0b;
  border: 1px solid #f5c6c1;
}

.form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.stepper-item {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
}

.stepper-item.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(11, 106, 162, 0.12);
}

.stepper-label {
  display: block;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stepper-title {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 4px;
}

fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  margin: 0 0 20px;
}

legend {
  font-weight: 700;
  padding: 0 8px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

label {
  font-size: 14px;
  font-weight: 600;
}

.hint {
  font-size: 12px;
  color: var(--muted);
}

input,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
  min-height: 96px;
}

input[type="file"] {
  padding: 8px;
}

.checkbox-row,
.radio-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.checkbox-row input,
.radio-row input {
  margin: 0;
}

.actions {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
}

.step-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.step-actions .btn {
  min-width: 140px;
}

.btn {
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 12px 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover,
.btn:focus {
  background: var(--accent-dark);
}

.btn.secondary {
  background: #e6edf3;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn.secondary:hover,
.btn.secondary:focus {
  background: #dce6ef;
}

.required {
  color: var(--danger);
}

.footer {
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .stepper {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .step-actions {
    flex-direction: column;
    align-items: stretch;
  }
}