:root {
  --bg-color: #ffffff;
  --fg-color: #111111;
  --primary-color: #c30d23;
  --muted-color: #555555;
  --border-color: #ddd;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--fg-color);
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
               Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.selector-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 24px;
}

.selector-hero {
  padding: 4px 0 10px;
}

.selector-hero__content {
  display: block;
}

.selector-hero h1 {
  margin: 0 0 10px;
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 36px);
  line-height: 1.15;
}

.selector-hero__desc {
  margin: 10px 0 0;
  color: var(--muted-color);
  font-size: clamp(14px, 1.7vw, 18px);
  line-height: 1.7;
}

.selector-hero__desc p {
  margin: 0 0 10px;
}

.selector-section {
  margin: 0 auto;
  padding: 16px 0;
}

.selector-section h2 {
  margin: 8px 0 12px;
  font-size: clamp(18px, 2.4vw, 28px);
}

.selector-section h3 {
  margin: 18px 0 10px;
  font-size: 18px;
  color: var(--fg-color);
}

.selector-form-top {
  max-width: 320px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.form-item label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--fg-color);
}

.form-item input,
.form-item select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: #fff;
  color: var(--fg-color);
  font-size: 14px;
  outline: none;
}

.form-item input:focus,
.form-item select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(195, 13, 35, 0.08);
}

.form-item small {
  display: block;
  margin-top: 6px;
  color: var(--muted-color);
  font-size: 12px;
  line-height: 1.6;
}

.check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 14px;
}

.check-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-color);
  font-size: 14px;
}

.check-item input {
  accent-color: var(--primary-color);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.btn {
  height: 40px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--fg-color);
}

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.result-head h2 {
  margin: 0;
}

.result-count {
  color: var(--muted-color);
  font-size: 14px;
}

.toolbar {
  margin: 0 0 12px;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: #fff;
}

.toolbar-title {
  margin-bottom: 10px;
  color: var(--fg-color);
  font-size: 14px;
  font-weight: 600;
}

.column-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.toggle-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--fg-color);
}

.toggle-item input {
  accent-color: var(--primary-color);
}

.empty-box {
  padding: 18px 16px;
  border: 1px dashed var(--border-color);
  border-radius: 10px;
  color: var(--muted-color);
  background: #fff;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: #fff;
}

table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}

th, td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
  white-space: nowrap;
}

thead th {
  position: sticky;
  top: 0;
  background: var(--primary-color);
  color: #fff;
  z-index: 1;
}

tbody tr:nth-child(even) {
  background: #f9f9f9;
}

.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: 24px;
}

.sort-indicator {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: #fff;
}

.hidden-col {
  display: none !important;
}

.model-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.model-link:hover {
  text-decoration: underline;
}

.tag {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(195, 13, 35, 0.08);
  color: var(--primary-color);
  font-size: 12px;
  font-weight: 600;
}

@media (max-width: 960px) {
  .selector-page {
    padding: 20px 12px 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .selector-form-top {
    max-width: none;
  }

  .result-head {
    flex-direction: column;
    align-items: flex-start;
  }

  table {
    min-width: 760px;
  }
}