/* SinoGrind Tools — merged tool styles (calculator .dw-calc-, grit converter .gc-, spec generator .swg-, bond selection .bst-, wheel selection .dw-sel-) */

/* ===== tool-calculator ===== */
.dw-calc-breadcrumb { padding: 15px 0 0; }
.dw-calc-breadcrumb a { color: #4a6cf7; text-decoration: none; }
.dw-calc-breadcrumb a:hover { text-decoration: underline; }
.dw-calc-breadcrumb span { color: #6c757d; margin: 0 8px; }

.dw-calc-header { text-align: center; margin-bottom: 40px; }
.dw-calc-header h1 { font-size: 2rem; font-weight: 700; color: #212529; margin-bottom: 10px; }
.dw-calc-header p { color: #6c757d; font-size: 1.05rem; }

.dw-calc-section { background: #fff; border-radius: 8px; padding: 30px; margin-bottom: 30px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.dw-calc-section h2 { font-size: 1.25rem; font-weight: 600; color: #212529; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid #4a6cf7; }

.dw-form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.dw-form-group label { display: block; font-weight: 500; color: #495057; margin-bottom: 6px; font-size: 0.9rem; }
.dw-form-group select,
.dw-form-group input { width: 100%; padding: 10px 12px; border: 1px solid #dee2e6; border-radius: 6px; font-size: 0.95rem; color: #495057; background: #fff; transition: border-color 0.2s, box-shadow 0.2s; }
.dw-form-group select:focus,
.dw-form-group input:focus { outline: none; border-color: #4a6cf7; box-shadow: 0 0 0 3px rgba(74,108,247,0.15); }

.dw-calc-btn { display: block; width: 100%; max-width: 320px; margin: 10px auto 30px; padding: 14px 30px; background: #4a6cf7; color: #fff; border: none; border-radius: 6px; font-size: 1.05rem; font-weight: 600; cursor: pointer; transition: background 0.2s, transform 0.1s; }
.dw-calc-btn:hover { background: #3a5ce5; }
.dw-calc-btn:active { transform: scale(0.98); }

.dw-results { background: #f8f9fa; border-radius: 8px; padding: 30px; margin-bottom: 30px; }
.dw-results h2 { font-size: 1.25rem; font-weight: 600; color: #212529; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid #4a6cf7; }

.dw-result-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; margin-bottom: 30px; }
.dw-result-card { background: #fff; border-radius: 8px; padding: 20px; text-align: center; box-shadow: 0 2px 8px rgba(0,0,0,0.05); border-left: 4px solid #dee2e6; }
.dw-result-card.primary { border-left-color: #4a6cf7; background: linear-gradient(135deg, #f0f4ff 0%, #fff 100%); }
.dw-result-card h3 { font-size: 0.85rem; color: #6c757d; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.dw-result-card .dw-result-value { font-size: 1.8rem; font-weight: 700; color: #212529; }
.dw-result-card.primary .dw-result-value { color: #4a6cf7; }
.dw-result-card .dw-result-unit { font-size: 0.85rem; color: #6c757d; margin-top: 4px; }

.dw-section-divider { font-size: 1.1rem; font-weight: 600; color: #495057; margin: 30px 0 15px; padding-top: 20px; border-top: 1px solid #dee2e6; }

.dw-result-table-wrap { background: #fff; border-radius: 8px; overflow-x: auto; box-shadow: 0 2px 8px rgba(0,0,0,0.05); margin-bottom: 20px; }
.dw-result-table { width: 100%; border-collapse: collapse; }
.dw-result-table thead { background: #4a6cf7; color: #fff; }
.dw-result-table th { padding: 12px 16px; text-align: left; font-weight: 600; font-size: 0.9rem; }
.dw-result-table td { padding: 10px 16px; border-bottom: 1px solid #f0f0f0; font-size: 0.9rem; color: #495057; }
.dw-result-table tbody tr:hover { background: #f8f9fa; }
.dw-result-table tbody tr:last-child td { border-bottom: none; }

.dw-warnings-card { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 20px; margin-top: 20px; }
.dw-warnings-card h3 { color: #856404; font-size: 1rem; margin-bottom: 10px; }
.dw-warnings-card ul { margin: 0; padding-left: 20px; }
.dw-warnings-card li { color: #856404; margin-bottom: 6px; font-size: 0.9rem; }

@media (max-width: 768px) {
    .dw-form-grid { grid-template-columns: 1fr; }
    .dw-result-cards { grid-template-columns: 1fr 1fr; }
    .dw-calc-header h1 { font-size: 1.5rem; }
    .dw-calc-section, .dw-results { padding: 20px; }
    .dw-result-table th, .dw-result-table td { padding: 8px 10px; font-size: 0.82rem; }
}

/* ===== tool-grit-converter ===== */
.gc-breadcrumb { padding: 15px 0 0; }
.gc-breadcrumb a { color: #4a6cf7; text-decoration: none; }
.gc-breadcrumb a:hover { text-decoration: underline; }
.gc-breadcrumb span { color: #6c757d; margin: 0 8px; }

.gc-disclaimer {
  background: #fef9e7;
  border: 1px solid #f9e79f;
  border-left: 4px solid #e67e22;
  padding: 14px 20px;
  margin: 24px auto;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #7d6608;
}
.gc-disclaimer strong { color: #7d6608; }
.tg-disclaimer {
  background: #fef9e7;
  border: 1px solid #f9e79f;
  border-left: 4px solid #e67e22;
  padding: 14px 20px;
  margin: 0 auto 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #7d6608;
}
.tg-disclaimer strong { color: #7d6608; }

/* Converter Card */
.gc-converter-card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  padding: 30px;
  margin-bottom: 30px;
}
.gc-converter-card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #4a6cf7;
}

.gc-form-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: end;
}
@media (max-width: 768px) {
  .gc-form-grid { grid-template-columns: 1fr; }
}

.gc-form-group { display: flex; flex-direction: column; gap: 6px; }
.gc-form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #495057;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.gc-form-group select,
.gc-form-group input {
  padding: 10px 14px;
  border: 1px solid #dee2e6;
  border-radius: 6px;
  font-size: 0.95rem;
  color: #495057;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.gc-form-group select:focus,
.gc-form-group input:focus {
  border-color: #4a6cf7;
  outline: none;
  box-shadow: 0 0 0 3px rgba(74,108,247,0.15);
}
.gc-form-group small {
  color: #6c757d;
  font-size: 0.8rem;
}

.gc-swap-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid #dee2e6;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  transition: all 0.25s ease;
  font-size: 1.2rem;
  color: #4a6cf7;
  align-self: center;
  margin-top: 20px;
}
.gc-swap-btn:hover {
  background: #4a6cf7;
  color: #fff;
  border-color: #4a6cf7;
}
@media (max-width: 768px) {
  .gc-swap-btn {
    margin: 0 auto;
    transform: rotate(90deg);
  }
}

.gc-convert-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #4a6cf7;
  color: #fff;
  border: none;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 8px;
}
.gc-convert-btn:hover { background: #3a5ce5; }

.gc-action-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.gc-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 2px solid #dee2e6;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  color: #495057;
  transition: all 0.25s ease;
}
.gc-action-btn:hover {
  border-color: #4a6cf7;
  color: #4a6cf7;
}
.gc-action-btn.reset { color: #c0392b; }
.gc-action-btn.reset:hover { border-color: #c0392b; background: #fdf0ed; }

/* Result Panel */
.gc-result-panel {
  margin-top: 24px;
  padding: 24px;
  background: #f0f7fb;
  border: 1px solid #d4e6f1;
  border-radius: 8px;
  display: none;
}
.gc-result-panel.visible { display: block; }
.gc-result-panel h3 {
  font-size: 1.05rem;
  color: #4a6cf7;
  margin-bottom: 16px;
}
.gc-result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.gc-result-item {
  background: #fff;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid #e8f0f6;
}
.gc-result-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #6c757d;
  margin-bottom: 4px;
}
.gc-result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #4a6cf7;
}
.gc-result-note {
  font-size: 0.8rem;
  color: #6c757d;
  margin-top: 4px;
}
.gc-confidence-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
}
.gc-confidence-exact { background: #d5f5e3; color: #1e8449; }
.gc-confidence-approx { background: #fdebd0; color: #b7950b; }
.gc-confidence-none { background: #fadbd8; color: #922b21; }

/* Copy Toast */
.gc-copy-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #212529;
  color: #fff;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 9999;
  transition: transform 0.3s ease;
  pointer-events: none;
}
.gc-copy-toast.show { transform: translateX(-50%) translateY(0); }

/* Reference Table */
.gc-ref-section { margin-top: 30px; }
.gc-ref-section h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 8px;
  padding-bottom: 10px;
  border-bottom: 2px solid #4a6cf7;
}
.gc-ref-section > p {
  color: #6c757d;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.gc-filter-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  align-items: end;
}
.gc-filter-row .gc-form-group { min-width: 160px; }

.gc-table-wrap {
  overflow-x: auto;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  margin-bottom: 30px;
}
.gc-table-wrap table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 0.9rem;
}
.gc-table-wrap thead { background: #4a6cf7; color: #fff; }
.gc-table-wrap thead th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.gc-table-wrap tbody tr { border-bottom: 1px solid #f0f0f0; }
.gc-table-wrap tbody tr:hover { background: #f8f9fa; }
.gc-table-wrap tbody td {
  padding: 10px 16px;
  white-space: nowrap;
}
.gc-table-wrap td.micron-range { color: #6c757d; font-size: 0.85rem; }

/* Educational Content */
.gc-edu-section { margin-top: 30px; }
.gc-edu-section h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #4a6cf7;
}
.gc-edu-section h3 {
  font-size: 1.1rem;
  color: #212529;
  margin: 20px 0 10px;
}
.gc-edu-section p {
  margin-bottom: 12px;
  color: #495057;
  line-height: 1.7;
}

/* FAQ */
.gc-faq-section { margin-top: 30px; }
.gc-faq-section h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #4a6cf7;
}
.gc-faq-item {
  border: 1px solid #dee2e6;
  border-radius: 8px;
  margin-bottom: 12px;
  background: #fff;
}
.gc-faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 16px 20px;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: #212529;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.gc-faq-question:hover { color: #4a6cf7; }
.gc-faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: #6c757d;
  flex-shrink: 0;
}
.gc-faq-item.open .gc-faq-question::after { content: '\2212'; }
.gc-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.gc-faq-answer-inner {
  padding: 0 20px 16px;
  color: #6c757d;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .gc-form-grid { grid-template-columns: 1fr; }
  .gc-result-grid { grid-template-columns: 1fr 1fr; }
  .gc-converter-card, .gc-table-wrap { padding: 20px; }
  .gc-table-wrap th, .gc-table-wrap td { padding: 8px 10px; font-size: 0.82rem; }
}

/* ===== tool-spec-generator ===== */
.swg-breadcrumb { padding: 15px 0 0; }
.swg-breadcrumb a { color: #4a6cf7; text-decoration: none; }
.swg-breadcrumb a:hover { text-decoration: underline; }
.swg-breadcrumb span { color: #6c757d; margin: 0 8px; }

.swg-header { text-align: center; margin-bottom: 40px; }
.swg-header h1 { font-size: 2rem; font-weight: 700; color: #212529; margin-bottom: 10px; }
.swg-header p { color: #6c757d; font-size: 1.05rem; }

.swg-container { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
@media (max-width: 768px) { .swg-container { grid-template-columns: 1fr; } }

.swg-card { background: #fff; border-radius: 8px; padding: 30px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.swg-card h2 { font-size: 1.15rem; font-weight: 600; color: #212529; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid #4a6cf7; }

.swg-form-group { margin-bottom: 18px; }
.swg-form-group label { display: block; font-weight: 500; color: #495057; margin-bottom: 6px; font-size: 0.9rem; }
.swg-form-group select,
.swg-form-group input { width: 100%; padding: 10px 12px; border: 1px solid #dee2e6; border-radius: 6px; font-size: 0.95rem; color: #495057; background: #fff; transition: border-color 0.2s, box-shadow 0.2s; }
.swg-form-group select:focus,
.swg-form-group input:focus { outline: none; border-color: #4a6cf7; box-shadow: 0 0 0 3px rgba(74,108,247,0.15); }
.swg-form-group .hint { font-size: 0.78rem; color: #6c757d; margin-top: 3px; }

.swg-radio-group { display: flex; gap: 16px; margin-top: 4px; }
.swg-radio-group label { display: flex; align-items: center; gap: 6px; cursor: pointer; font-weight: 400; font-size: 0.9rem; }
.swg-radio-group input[type="radio"] { accent-color: #4a6cf7; }

.swg-dim-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.swg-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.swg-section-divider { height: 1px; background: #dee2e6; margin: 18px 0; }

.swg-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border: none; border-radius: 6px; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: background 0.2s, transform 0.1s; text-decoration: none; }
.swg-btn:active { transform: scale(0.98); }
.swg-btn-primary { background: #4a6cf7; color: #fff; }
.swg-btn-primary:hover { background: #3a5ce5; }
.swg-btn-outline { background: transparent; color: #4a6cf7; border: 1px solid #4a6cf7; }
.swg-btn-outline:hover { background: rgba(74,108,247,0.06); }
.swg-btn-success { background: #198754; color: #fff; }
.swg-btn-success:hover { background: #157347; }
.swg-generate-btn { width: 100%; padding: 14px; font-size: 1rem; margin-top: 10px; }

.swg-btn-group { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

.swg-guide-box { background: #f0f7ff; border: 1px solid #b6d4fe; border-radius: 6px; padding: 12px 16px; font-size: 0.82rem; line-height: 1.6; margin-top: 12px; }
.swg-guide-box strong { color: #4a6cf7; }

.swg-tab-bar { display: flex; gap: 0; border-bottom: 2px solid #dee2e6; margin-bottom: 16px; }
.swg-tab-bar button { padding: 10px 18px; border: none; background: none; font-size: 0.9rem; font-weight: 500; color: #6c757d; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color 0.15s, border-color 0.15s; }
.swg-tab-bar button.active { color: #4a6cf7; border-bottom-color: #4a6cf7; }
.swg-tab-bar button:hover:not(.active) { color: #495057; }
.swg-tab-content { display: none; }
.swg-tab-content.active { display: block; }

.swg-spec-output { background: #f1f3f5; border: 1px solid #dee2e6; border-radius: 6px; padding: 16px 20px; font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace; font-size: 0.88rem; line-height: 1.7; white-space: pre-wrap; word-break: break-word; min-height: 80px; }
.swg-spec-output.empty { color: #6c757d; font-style: italic; font-family: inherit; }
.swg-spec-output .label { color: #6c757d; font-size: 0.78rem; font-family: -apple-system, sans-serif; display: block; margin-top: 10px; }
.swg-spec-output .label:first-child { margin-top: 0; }
.swg-spec-output .value { color: #212529; font-weight: 500; }
.swg-spec-output .code-value { color: #4a6cf7; font-weight: 600; font-size: 0.95rem; }

.swg-rfq-output { background: #fff; border: 1px solid #dee2e6; border-radius: 6px; padding: 16px 20px; font-size: 0.88rem; line-height: 1.7; white-space: pre-wrap; min-height: 60px; margin-top: 12px; }
.swg-rfq-output.empty { color: #6c757d; font-style: italic; }

.swg-concentration-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin-top: 12px; }
.swg-concentration-table th,
.swg-concentration-table td { padding: 8px 12px; border: 1px solid #dee2e6; text-align: left; }
.swg-concentration-table th { background: #f1f3f5; font-weight: 600; }
.swg-concentration-table tbody tr:hover td { background: #f8f9fa; }

.swg-toast { position: fixed; bottom: 24px; right: 24px; background: #212529; color: #fff; padding: 10px 20px; border-radius: 6px; font-size: 0.85rem; z-index: 9999; opacity: 0; transform: translateY(10px); transition: opacity 0.2s, transform 0.2s; pointer-events: none; }
.swg-toast.show { opacity: 1; transform: translateY(0); }

.swg-seo-details { margin-top: 20px; }
.swg-seo-details summary { cursor: pointer; font-size: 0.85rem; color: #6c757d; }
.swg-seo-details div { margin-top: 12px; font-size: 0.82rem; line-height: 1.7; color: #6c757d; }

@media (max-width: 768px) {
    .swg-dim-row { grid-template-columns: 1fr; }
    .swg-form-row { grid-template-columns: 1fr; }
    .swg-header h1 { font-size: 1.5rem; }
    .swg-card { padding: 20px; overflow-x: auto; }
}

/* ===== tool-bond-selection ===== */
.bst-breadcrumb { padding: 15px 0 0; }
.bst-breadcrumb a { color: #4a6cf7; text-decoration: none; }
.bst-breadcrumb a:hover { text-decoration: underline; }
.bst-breadcrumb span { color: #6c757d; margin: 0 8px; }

.bst-header { text-align: center; margin-bottom: 40px; }
.bst-header h1 { font-size: 2rem; font-weight: 700; color: #212529; margin-bottom: 10px; }
.bst-header p { color: #6c757d; font-size: 1.05rem; max-width: 700px; margin: 0 auto; }

.bst-main-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media(max-width:800px) { .bst-main-grid { grid-template-columns: 1fr; } }

.bst-card { background: #fff; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); overflow: hidden; border: 1px solid #dee2e6; }
.bst-card-header { background: #4a6cf7; color: #fff; padding: 12px 20px; font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.bst-card-body { padding: 20px; }

.bst-form-group { margin-bottom: 16px; }
.bst-form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 5px; color: #4a6cf7; }
.bst-form-group .hint { font-size: 0.78rem; color: #6c757d; margin-top: 3px; }
.bst-form-group select,
.bst-form-group input[type="number"] { width: 100%; padding: 9px 12px; border: 1px solid #dee2e6; border-radius: 6px; font-size: 0.92rem; font-family: inherit; background: #fff; color: #495057; transition: border-color 0.2s, box-shadow 0.2s; }
.bst-form-group select:focus,
.bst-form-group input:focus { outline: none; border-color: #4a6cf7; box-shadow: 0 0 0 3px rgba(74,108,247,0.15); }

.bst-radio-group { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; }
.bst-radio-card { position: relative; }
.bst-radio-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.bst-radio-card label { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 10px 8px; border: 2px solid #dee2e6; border-radius: 6px; cursor: pointer; font-size: 0.82rem; font-weight: 500; text-align: center; transition: all 0.2s; min-height: 60px; background: #fff; }
.bst-radio-card label:hover { border-color: #4a6cf7; background: #f0f4ff; }
.bst-radio-card input:checked + label { border-color: #4a6cf7; background: rgba(74,108,247,0.06); box-shadow: 0 0 0 1px #4a6cf7; }
.bst-radio-card input:focus-visible + label { box-shadow: 0 0 0 3px rgba(74,108,247,0.35); }

.bst-btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.bst-btn { padding: 10px 24px; border: none; border-radius: 6px; font-size: 0.88rem; font-weight: 600; cursor: pointer; transition: all 0.2s; font-family: inherit; }
.bst-btn:focus-visible { box-shadow: 0 0 0 3px rgba(74,108,247,0.4); }
.bst-btn-primary { background: #4a6cf7; color: #fff; }
.bst-btn-primary:hover { background: #3a5ce5; }
.bst-btn-secondary { background: #ecf0f3; color: #495057; }
.bst-btn-secondary:hover { background: #dde1e6; }
.bst-btn-sm { padding: 6px 14px; font-size: 0.8rem; }

#bst-results-panel { display: none; }
#bst-results-panel.visible { display: block; }
.bst-result-card { border-left: 5px solid #4a6cf7; background: #fff; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 24px; margin-bottom: 20px; }
.bst-result-card h2 { font-size: 1.3rem; color: #4a6cf7; margin-bottom: 6px; }
.bst-result-card .bond-badge { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 700; margin-right: 8px; margin-bottom: 8px; }
.bst-badge-primary { background: #4a6cf7; color: #fff; }
.bst-badge-secondary { background: #2980b9; color: #fff; }
.bst-result-card p, .bst-result-card li { font-size: 0.92rem; line-height: 1.65; }
.bst-result-card ul { padding-left: 20px; margin: 8px 0; }
.bst-result-card li { margin-bottom: 4px; }
.bst-scoring-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; margin: 16px 0; }
.bst-scoring-item { background: #f8f9fa; border-radius: 6px; padding: 10px 14px; font-size: 0.84rem; border: 1px solid #dee2e6; }
.bst-scoring-item .sc-label { color: #6c757d; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.03em; }
.bst-scoring-item .sc-bar { height: 6px; background: #e8eaed; border-radius: 3px; margin-top: 4px; overflow: hidden; }
.bst-scoring-item .sc-fill { height: 100%; border-radius: 3px; transition: width 0.6s ease; }
.bst-scoring-item .sc-value { font-weight: 700; font-size: 0.9rem; }

.bst-disclaimer { background: #fff8e1; border: 1px solid #ffe082; border-radius: 8px; padding: 18px; margin: 24px 0; font-size: 0.85rem; color: #5d4037; }
.bst-disclaimer strong { color: #bf360c; }

.bst-comparison-section { margin: 40px 0; }
.bst-comparison-section h2 { font-size: 1.4rem; color: #4a6cf7; margin-bottom: 16px; text-align: center; }
.bst-table-wrap { overflow-x: auto; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); border: 1px solid #dee2e6; }
.bst-table-wrap table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.bst-table-wrap thead { background: #4a6cf7; color: #fff; }
.bst-table-wrap th { padding: 12px 16px; text-align: left; font-weight: 600; white-space: nowrap; }
.bst-table-wrap td { padding: 11px 16px; border-bottom: 1px solid #f0f0f0; vertical-align: top; }
.bst-table-wrap tbody tr:hover { background: #f5f8fc; }
.bst-table-wrap tbody tr:nth-child(even) { background: #fafbfc; }

.bst-faq-section { margin: 40px 0; }
.bst-faq-section h2 { font-size: 1.4rem; color: #4a6cf7; margin-bottom: 18px; text-align: center; }
.bst-faq-item { background: #fff; border: 1px solid #dee2e6; border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
.bst-faq-item h3 { font-size: 1.05rem; padding: 14px 20px; color: #4a6cf7; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.bst-faq-item h3::after { content: '\25B8'; transition: transform 0.2s; font-size: 1.2rem; }
.bst-faq-item.open h3::after { transform: rotate(90deg); }
.bst-faq-answer { padding: 0 20px 16px; display: none; font-size: 0.92rem; line-height: 1.7; }
.bst-faq-item.open .bst-faq-answer { display: block; }
.bst-faq-answer .direct-answer { font-weight: 600; color: #4a6cf7; margin-bottom: 8px; padding: 10px 14px; background: rgba(74,108,247,0.04); border-radius: 6px; border-left: 3px solid #4a6cf7; }

.bst-tech-section { margin: 40px 0; }
.bst-tech-section h2 { font-size: 1.3rem; color: #4a6cf7; margin-bottom: 12px; margin-top: 30px; }
.bst-tech-section h3 { font-size: 1.05rem; color: #3a5ce5; margin-bottom: 8px; margin-top: 20px; }
.bst-tech-section p { margin-bottom: 12px; font-size: 0.92rem; }
.bst-tech-section ul { padding-left: 20px; margin-bottom: 12px; }
.bst-tech-section li { margin-bottom: 5px; font-size: 0.92rem; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.bst-animate-in { animation: fadeUp 0.4s ease forwards; }

@media (max-width: 768px) {
    .bst-header h1 { font-size: 1.5rem; }
    .bst-radio-group { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
    .bst-scoring-grid { grid-template-columns: 1fr; }
    .bst-card-body { padding: 16px; }
}

/* ===== tool-wheel-selection ===== */
.dw-sel-breadcrumb { padding: 15px 0 0; }
.dw-sel-breadcrumb a { color: #4a6cf7; text-decoration: none; }
.dw-sel-breadcrumb a:hover { text-decoration: underline; }
.dw-sel-breadcrumb span { color: #6c757d; margin: 0 8px; }

.dw-sel-header { text-align: center; margin-bottom: 40px; }
.dw-sel-header h1 { font-size: 2rem; font-weight: 700; color: #212529; margin-bottom: 10px; }
.dw-sel-header p { color: #6c757d; font-size: 1.05rem; max-width: 680px; margin: 0 auto; }

.dw-sel-card { background: #fff; border-radius: 8px; padding: 30px; margin-bottom: 30px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.dw-sel-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid #f0f0f0; }
.dw-sel-card-header h2 { font-size: 1.25rem; font-weight: 600; color: #212529; margin: 0; }
.dw-sel-card-icon { width: 32px; height: 32px; background: #4a6cf7; color: #fff; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; flex-shrink: 0; }

.dw-sel-form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.dw-sel-field label { display: block; font-weight: 600; color: #495057; margin-bottom: 6px; font-size: 0.9rem; }
.dw-sel-field .dw-sel-hint { font-size: 0.8rem; color: #6c757d; margin-top: 3px; }
.dw-sel-field select,
.dw-sel-field input[type="text"],
.dw-sel-field input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    font-size: 0.95rem;
    color: #495057;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.dw-sel-field select:focus,
.dw-sel-field input:focus {
    outline: none;
    border-color: #4a6cf7;
    box-shadow: 0 0 0 3px rgba(74,108,247,0.15);
}

.dw-sel-btn-group { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.dw-sel-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    white-space: nowrap;
}
.dw-sel-btn:active { transform: scale(0.97); }
.dw-sel-btn-primary { background: #4a6cf7; color: #fff; }
.dw-sel-btn-primary:hover { background: #3a5ce5; }
.dw-sel-btn-secondary { background: #f8f9fa; color: #495057; border: 1px solid #dee2e6; }
.dw-sel-btn-secondary:hover { background: #e9eaec; }
.dw-sel-btn-gold { background: #b8860b; color: #fff; }
.dw-sel-btn-gold:hover { background: #daa520; }
.dw-sel-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.dw-sel-rec-card {
    display: none;
    background: linear-gradient(135deg, #fff 0%, #f8f9fb 100%);
    border: 2px solid #4a6cf7;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
}
.dw-sel-rec-card.visible { display: block; }
.dw-sel-rec-badge {
    display: inline-block;
    background: #4a6cf7;
    color: #fff;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}
.dw-sel-rec-main h2 { font-size: 1.5rem; color: #212529; margin-bottom: 8px; }
.dw-sel-rec-main .dw-sel-rec-subtitle { color: #6c757d; margin-bottom: 1.25rem; font-size: 0.95rem; }

.dw-sel-rec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 1.5rem; }
.dw-sel-rec-item { background: #fff; border: 1px solid #dee2e6; border-radius: 6px; padding: 16px; }
.dw-sel-rec-item-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: #6c757d; font-weight: 600; margin-bottom: 6px; }
.dw-sel-rec-item-value { font-size: 1.05rem; font-weight: 700; color: #4a6cf7; }

.dw-sel-score-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}
.dw-sel-score-high { background: #dcfce7; color: #15803d; }
.dw-sel-score-med { background: #fef3c7; color: #b45309; }
.dw-sel-score-low { background: #fee2e2; color: #c8102e; }

.dw-sel-scores-table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.dw-sel-scores-table th, .dw-sel-scores-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid #dee2e6; }
.dw-sel-scores-table th { background: #f8f9fa; font-weight: 600; color: #4a6cf7; font-size: 0.85rem; }
.dw-sel-scores-table tr:last-child td { border-bottom: none; }
.dw-sel-scores-table .dw-sel-score-bar { height: 6px; border-radius: 3px; background: #dee2e6; overflow: hidden; min-width: 60px; }
.dw-sel-scores-table .dw-sel-score-bar-fill { height: 100%; border-radius: 3px; transition: width 0.4s ease; }
.dw-sel-scores-table .dw-sel-score-bar-fill.high { background: #15803d; }
.dw-sel-scores-table .dw-sel-score-bar-fill.med { background: #b45309; }
.dw-sel-scores-table .dw-sel-score-bar-fill.low { background: #c8102e; }

.dw-sel-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 30px; }
.dw-sel-compare-col { background: #fff; border-radius: 8px; border: 1px solid #dee2e6; box-shadow: 0 2px 12px rgba(0,0,0,0.06); padding: 24px; }
.dw-sel-compare-col h3 { font-size: 1.1rem; color: #212529; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 2px solid #f0f0f0; }
.dw-sel-compare-col h3 .dw-sel-abr-tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.72rem; font-weight: 700; margin-left: 6px; vertical-align: middle; }
.dw-sel-tag-diamond { background: #dbeafe; color: #1e40af; }
.dw-sel-tag-cbn { background: #fce7f3; color: #9d174d; }
.dw-sel-compare-col ul { list-style: none; padding: 0; }
.dw-sel-compare-col li { padding: 6px 0; font-size: 0.9rem; border-bottom: 1px solid #f0f1f3; display: flex; gap: 8px; }
.dw-sel-compare-col li:last-child { border-bottom: none; }
.dw-sel-compare-col li strong { color: #212529; min-width: 110px; flex-shrink: 0; }

.dw-sel-faq { margin-bottom: 30px; }
.dw-sel-faq h2 { font-size: 1.25rem; color: #212529; margin-bottom: 8px; }
.dw-sel-faq h3 { font-size: 1.05rem; color: #3a5ce5; margin: 16px 0 6px; }
.dw-sel-faq p { font-size: 0.95rem; color: #495057; margin-bottom: 12px; }
.dw-sel-faq ul, .dw-sel-faq ol { margin: 8px 0 12px 24px; font-size: 0.92rem; }
.dw-sel-faq li { margin-bottom: 6px; }

.dw-sel-takeaways {
    background: linear-gradient(135deg, #1a2744 0%, #2a3f6a 100%);
    color: #fff;
    border-radius: 8px;
    padding: 28px 32px;
    margin-bottom: 30px;
}
.dw-sel-takeaways h2 { color: #fff; font-size: 1.2rem; margin-bottom: 12px; }
.dw-sel-takeaways ul { margin: 0 0 0 20px; font-size: 0.93rem; }
.dw-sel-takeaways li { margin-bottom: 6px; }

.dw-sel-mistakes {
    background: #fff5f5;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 24px 32px;
    margin-bottom: 30px;
}
.dw-sel-mistakes h2 { color: #c8102e; font-size: 1.15rem; margin-bottom: 12px; }
.dw-sel-mistakes ol { margin: 0 0 0 20px; font-size: 0.92rem; }
.dw-sel-mistakes li { margin-bottom: 6px; }
.dw-sel-mistakes li strong { color: #212529; }

.dw-sel-resources {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 24px 32px;
    margin-bottom: 30px;
}
.dw-sel-resources h2 { color: #15803d; font-size: 1.15rem; margin-bottom: 8px; }
.dw-sel-resources ul { list-style: none; padding: 0; }
.dw-sel-resources li { padding: 4px 0; }
.dw-sel-resources li a { font-weight: 600; color: #4a6cf7; text-decoration: none; }
.dw-sel-resources li a:hover { text-decoration: underline; }

.dw-sel-disclaimer {
    text-align: center;
    font-size: 0.82rem;
    color: #6c757d;
    border-top: 1px solid #dee2e6;
    padding-top: 16px;
    margin-top: 16px;
}

.dw-sel-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #212529;
    color: #fff;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 0.9rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    transform: translateY(120%);
    transition: transform 0.25s ease;
    z-index: 1000;
}
.dw-sel-toast.show { transform: translateY(0); }

@media (max-width: 768px) {
    .dw-sel-form-grid { grid-template-columns: 1fr; }
    .dw-sel-rec-grid { grid-template-columns: 1fr; }
    .dw-sel-header h1 { font-size: 1.5rem; }
    .dw-sel-card, .dw-sel-rec-card { padding: 20px; }
    .dw-sel-comparison { grid-template-columns: 1fr; }
    .dw-sel-btn-group { flex-direction: column; }
    .dw-sel-btn { justify-content: center; }
    .dw-sel-takeaways, .dw-sel-mistakes, .dw-sel-resources { padding: 20px; }
    .dw-sel-compare-col { padding: 16px; }
}

/* ============================================================
   Shared: About / Educational section + Related Tools grid
   ============================================================ */
.tg-about-section { padding: 50px 0 0; }
.tg-about-box {
    max-width: 860px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
    padding: 40px;
}
.tg-about-box h2 {
    font-size: 22px;
    font-weight: 700;
    color: #212529;
    text-align: center;
    margin-bottom: 24px;
}
.tg-about-box > p {
    color: #555;
    line-height: 1.75;
    margin-bottom: 14px;
}
.tg-about-faq {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 24px;
    margin-top: 20px;
}
.tg-about-faq h3 { font-size: 17px; font-weight: 600; color: #212529; margin-bottom: 14px; }
.tg-about-note {
    max-width: 860px;
    margin: 14px auto 0;
    color: #888;
    font-size: 13px;
    line-height: 1.6;
    text-align: center;
}

/* Related Tools cards */
.tg-related-tools { padding: 50px 0 0; }
.tg-tools-grid2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
}
.tg-tool-link {
    display: block;
    background: #fff;
    border: 1px solid #eef0f3;
    border-radius: 12px;
    padding: 28px 26px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.tg-tool-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(74,108,247,0.14);
    border-color: #4a6cf7;
}
.tg-tool-link .tg-tool-icon {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, #4a6cf7 0%, #6b8aff 100%);
    color: #fff;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 21px;
    margin-bottom: 16px;
}
.tg-tool-link h3 {
    font-size: 17px;
    font-weight: 600;
    color: #212529;
    margin-bottom: 8px;
    transition: color 0.2s ease;
}
.tg-tool-link:hover h3 { color: #4a6cf7; }
.tg-tool-link p {
    color: #666;
    font-size: 14px;
    line-height: 1.65;
    margin: 0;
}

@media (max-width: 768px) {
    .tg-about-box { padding: 24px; }
    .tg-about-box h2 { font-size: 19px; }
}