@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");
@import "tx-variables.css";

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }

img { max-width: 100%; height: auto; }

main { flex: 1; }

.udfdsb-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.udfdsb-site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  .udfdsb-site-header { background: rgba(15, 23, 42, 0.9); }
}

.udfdsb-site-header .udfdsb-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.udfdsb-site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.udfdsb-site-nav a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.udfdsb-site-nav a:hover,
.udfdsb-site-nav a.udfdsb-active,
.udfdsb-site-nav .udfdsb-nav-dropdown-trigger.udfdsb-active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Nav Dropdown */
.udfdsb-nav-dropdown {
  position: relative;
}

.udfdsb-nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  cursor: default;
}

.udfdsb-dd-arrow {
  font-size: 0.625rem;
  transition: transform 0.2s;
}

.udfdsb-nav-dropdown:hover .udfdsb-dd-arrow,
.udfdsb-nav-dropdown.udfdsb-open .udfdsb-dd-arrow {
  transform: rotate(180deg);
}

.udfdsb-nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.375rem;
  z-index: 200;
}

.udfdsb-nav-dropdown:hover .udfdsb-nav-dropdown-menu,
.udfdsb-nav-dropdown.udfdsb-open .udfdsb-nav-dropdown-menu {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.udfdsb-nav-dropdown-menu a {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.udfdsb-nav-dropdown-menu a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Remove old nav-toggle (hamburger) */
.udfdsb-nav-toggle { display: none !important; }
.udfdsb-nav-toggle-bar { display: none !important; }

.udfdsb-site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text) !important;
  flex-shrink: 0;
}

.udfdsb-site-logo:hover { color: var(--color-primary) !important; }

.udfdsb-site-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}

.udfdsb-nav-logo img {
    height: 38px;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.2));
    transition: transform 0.3s ease, filter 0.3s ease;
}

.udfdsb-nav-logo img:hover {
    transform: scale(1.08) rotate(-3deg);
    filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.3));
}

.udfdsb-site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.udfdsb-site-logo-text small {
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* Footer */
.udfdsb-site-footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
  padding: 3rem 0 1.5rem;
}

.udfdsb-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .udfdsb-footer-grid { grid-template-columns: 1fr; }
}

.udfdsb-footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 0.75rem;
  max-width: 320px;
}

.udfdsb-footer-links h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.udfdsb-footer-links ul { list-style: none; }
.udfdsb-footer-links li { margin-bottom: 0.5rem; }
.udfdsb-footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.udfdsb-footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Hero */
.udfdsb-hero {
  padding: 4rem 0 3.5rem;
  text-align: center;
  background: var(--gradient-hero);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
  position: relative;
  overflow: hidden;
}

.udfdsb-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.udfdsb-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.udfdsb-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.udfdsb-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.udfdsb-hero p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 1.75rem;
  line-height: 1.7;
}

.udfdsb-hero-actions {
  display: flex;
  gap: 0.875rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.udfdsb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.udfdsb-btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.udfdsb-btn-primary:hover {
  color: #fff;
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
  transform: translateY(-2px);
}

.udfdsb-btn-primary:active {
  transform: translateY(0);
}

.udfdsb-btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.udfdsb-btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.udfdsb-btn-secondary:active {
  transform: translateY(0);
}

.udfdsb-btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }

/* Cards */
.udfdsb-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.udfdsb-card-hover {
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.udfdsb-card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

/* Tool grid */
.udfdsb-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.udfdsb-tool-card-icon {
  width: 52px;
  height: 52px;
  background: var(--gradient-brand);
  color: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.udfdsb-tool-card:nth-child(2) .udfdsb-tool-card-icon {
  background: var(--gradient-card-2);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.udfdsb-tool-card:nth-child(3) .udfdsb-tool-card-icon {
  background: var(--gradient-card-3);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}

.udfdsb-tool-card:nth-child(4) .udfdsb-tool-card-icon {
  background: var(--gradient-card-4);
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
}

.udfdsb-tool-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.udfdsb-tool-card p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* Section */
/* Section */
.udfdsb-section {
  padding: 3.5rem 0;
}

.udfdsb-section-muted {
  background: var(--color-bg-warm);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.udfdsb-section-header {
  margin-bottom: 1.5rem;
}

.udfdsb-section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}

.udfdsb-section-header p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Forms */
.udfdsb-form-group { margin-bottom: 1rem; }

.udfdsb-form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.udfdsb-form-control,
select.udfdsb-form-control,
input.udfdsb-form-control,
textarea.udfdsb-form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.udfdsb-form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.udfdsb-form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

/* Tool page */
.udfdsb-tool-page-header {
  padding: 2rem 0 1rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.udfdsb-tool-page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.udfdsb-tool-page-header p {
  color: var(--color-text-muted);
  max-width: 720px;
}

.udfdsb-tool-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-bottom: 3rem;
}

@media (min-width: 900px) {
  .udfdsb-tool-layout.udfdsb-has-sidebar {
    grid-template-columns: 1fr 320px;
  }
}

/* Converter */
.udfdsb-converter-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.udfdsb-amount-input-wrap {
  position: relative;
}

.udfdsb-amount-input-wrap input {
  font-size: 2rem;
  font-weight: 600;
  padding: 1rem 1.25rem;
  text-align: center;
}

.udfdsb-currency-select-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.udfdsb-currency-select-row select { flex: 1; min-width: 140px; }

.udfdsb-swap-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

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

.udfdsb-results-grid {
  display: grid;
  gap: 0.75rem;
}

.udfdsb-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  background: var(--color-bg-muted);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: border-color var(--transition);
}

.udfdsb-result-item:hover { border-color: var(--color-border-strong); }

.udfdsb-result-item .udfdsb-code {
  font-weight: 600;
  font-size: 0.9375rem;
}

.udfdsb-result-item .udfdsb-name {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.udfdsb-result-item .udfdsb-value {
  font-weight: 700;
  font-size: 1.0625rem;
  font-variant-numeric: tabular-nums;
}

.udfdsb-rate-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 0.5rem;
}

/* Symbols table */
.udfdsb-symbols-toolbar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.udfdsb-symbols-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.udfdsb-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.udfdsb-data-table th,
.udfdsb-data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.udfdsb-data-table th {
  background: var(--color-bg-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  position: sticky;
  top: 0;
}

.udfdsb-data-table tr:last-child td { border-bottom: none; }
.udfdsb-data-table tr:hover td { background: var(--color-bg-muted); }

.udfdsb-symbol-cell {
  font-size: 1.25rem;
  font-weight: 600;
  min-width: 60px;
}

/* Pairs */
.udfdsb-pairs-filter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.udfdsb-filter-chip {
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.udfdsb-filter-chip:hover,
.udfdsb-filter-chip.udfdsb-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.udfdsb-pairs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.udfdsb-pair-card {
  display: block;
  color: inherit !important;
}

.udfdsb-pair-card .udfdsb-pair-code {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.udfdsb-pair-card .udfdsb-pair-rate {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.udfdsb-pair-card .udfdsb-pair-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Widget generator */
.udfdsb-widget-preview {
  background: var(--color-bg-muted);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.udfdsb-embed-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: #0f172a;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 1rem;
}

.udfdsb-color-input-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.udfdsb-color-input-row input[type="color"] {
  width: 48px;
  height: 36px;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

/* Legal pages */
.udfdsb-legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.udfdsb-legal-content h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.udfdsb-legal-content .udfdsb-updated {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.udfdsb-legal-content h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  padding-top: 0.5rem;
}

.udfdsb-legal-content h3 {
  font-size: 1.0625rem;
  margin: 1.25rem 0 0.5rem;
}

.udfdsb-legal-content p,
.udfdsb-legal-content li {
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
}

.udfdsb-legal-content ul {
  margin-left: 1.25rem;
  margin-bottom: 1rem;
}

.udfdsb-legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.875rem;
}

.udfdsb-legal-table th,
.udfdsb-legal-table td {
  border: 1px solid var(--color-border);
  padding: 0.75rem;
  text-align: left;
  vertical-align: top;
}

.udfdsb-legal-table th {
  background: var(--color-bg-muted);
  font-weight: 600;
}

.udfdsb-contact-email-box {
  text-align: center;
  padding: 3rem 2rem;
  margin: 2rem 0;
}

.udfdsb-contact-email-box .udfdsb-email {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  word-break: break-all;
}

/* Features strip */
.udfdsb-features-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.udfdsb-feature-item {
  text-align: center;
  padding: 1.25rem;
}

.udfdsb-feature-item .udfdsb-icon {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.udfdsb-feature-item h4 {
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
}

.udfdsb-feature-item p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Section Badge */
.udfdsb-section-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 1rem;
}

/* Section Header Large */
.udfdsb-section-header-large {
  text-align: center;
  margin-bottom: 3rem;
}

.udfdsb-section-header-large h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.udfdsb-section-header-large p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Tools Showcase - 新的工具展示布局 */
.udfdsb-tools-showcase {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.udfdsb-tool-showcase-large {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  box-shadow: var(--shadow-md);
}

.udfdsb-tool-showcase-content {
  padding: 2.5rem;
}

.udfdsb-tool-showcase-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-card-1);
  color: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}

.udfdsb-tool-showcase-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.udfdsb-tool-showcase-text > p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.udfdsb-tool-features {
  list-style: none;
  margin: 0 0 1.5rem 0;
  padding: 0;
}

.udfdsb-tool-features li {
  padding: 0.375rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.udfdsb-tool-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.udfdsb-tool-showcase-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
}

.udfdsb-visual-text {
  background: rgba(255, 255, 255, 0.95);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text);
  box-shadow: var(--shadow-lg);
}

.udfdsb-tools-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.udfdsb-tools-row .udfdsb-tool-showcase-item {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.udfdsb-tools-row .udfdsb-tool-showcase-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.udfdsb-tools-row .udfdsb-tool-showcase-icon {
  width: 52px;
  height: 52px;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.udfdsb-tools-row h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.udfdsb-tools-row p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.udfdsb-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.udfdsb-link:hover {
  gap: 0.625rem;
}

@media (max-width: 900px) {
  .udfdsb-tool-showcase-large {
    grid-template-columns: 1fr;
  }
  
  .udfdsb-tool-showcase-visual {
    min-height: 150px;
  }
  
  .udfdsb-tools-row {
    grid-template-columns: 1fr;
  }
}

/* Features Grid - 新的特性网格 */
.udfdsb-section-features {
  padding: 4rem 0;
}

.udfdsb-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.udfdsb-feature-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.udfdsb-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.udfdsb-feature-card-large {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

.udfdsb-feature-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.udfdsb-feature-card-large .udfdsb-feature-icon-wrap {
  margin: 0 0 1.25rem 0;
}

.udfdsb-feature-icon {
  font-size: 1.75rem;
  color: #fff;
}

.udfdsb-feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.udfdsb-feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .udfdsb-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .udfdsb-feature-card-large {
    grid-row: span 1;
    grid-column: span 2;
  }
}

@media (max-width: 600px) {
  .udfdsb-features-grid {
    grid-template-columns: 1fr;
  }
  
  .udfdsb-feature-card-large {
    grid-column: span 1;
  }
}

/* Steps Timeline - 时间线布局 */
.udfdsb-section-steps {
  background: var(--color-bg-muted);
  padding: 4rem 0;
}

.udfdsb-steps-header {
  text-align: center;
  margin-bottom: 3rem;
}

.udfdsb-steps-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.udfdsb-steps-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

.udfdsb-steps-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.udfdsb-timeline-line {
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0.3;
}

.udfdsb-step-timeline-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  position: relative;
}

.udfdsb-step-timeline-marker {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.udfdsb-step-timeline-content {
  flex: 1;
  padding-top: 0.5rem;
}

.udfdsb-step-timeline-content h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.udfdsb-step-timeline-content p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Info Section - 信息展示区域 */
.udfdsb-section-info {
  padding: 4rem 0;
}

.udfdsb-info-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.udfdsb-info-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin: 1rem 0 1.25rem;
}

.udfdsb-info-content > p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.udfdsb-info-highlight {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.udfdsb-rate-comparison {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.udfdsb-rate-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}

.udfdsb-rate-mid {
  background: var(--color-success-light);
  border: 2px solid var(--color-success);
}

.udfdsb-rate-bank {
  background: var(--color-bg-muted);
  border: 2px solid var(--color-border-strong);
}

.udfdsb-rate-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.udfdsb-rate-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.udfdsb-rate-mid .udfdsb-rate-value {
  color: var(--color-success);
}

.udfdsb-rate-arrow {
  text-align: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  margin: 0.5rem 0;
}

.udfdsb-rate-diff {
  text-align: center;
  padding: 0.75rem;
  background: var(--color-warning-bg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: #8a6d4b;
  font-weight: 600;
  margin-top: 0.75rem;
}

.udfdsb-disclaimer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .udfdsb-info-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Links Section - 链接区域 */
.udfdsb-section-links {
  background: var(--color-bg-muted);
  padding: 3rem 0;
}

.udfdsb-links-header {
  text-align: center;
  margin-bottom: 2rem;
}

.udfdsb-links-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.udfdsb-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.udfdsb-link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.udfdsb-link-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.udfdsb-link-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.udfdsb-link-text {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.udfdsb-link-text strong {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0.125rem;
}

.udfdsb-link-text span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.udfdsb-link-arrow {
  color: var(--color-text-muted);
  font-size: 1.25rem;
  transition: transform var(--transition), color var(--transition);
}

.udfdsb-link-card:hover .udfdsb-link-arrow {
  transform: translateX(4px);
  color: var(--color-primary);
}

@media (max-width: 900px) {
  .udfdsb-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .udfdsb-links-grid {
    grid-template-columns: 1fr;
  }
}

/* Steps Grid - 原来的步骤布局（保留兼容） */
.udfdsb-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.udfdsb-step-item {
  padding: 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.udfdsb-step-item:hover {
  border-color: var(--color-primary-soft);
  box-shadow: var(--shadow-md);
}

.udfdsb-step-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.udfdsb-step-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.udfdsb-step-item p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Alert */
.udfdsb-alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.udfdsb-alert-info {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.udfdsb-alert-warning {
  background: var(--color-warning-bg);
  color: #8a6d4b;
  border: 1px solid var(--color-warning-border);
}

.udfdsb-loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Mobile nav - compact inline layout, no hamburger */
@media (max-width: 900px) {
  .udfdsb-site-nav { gap: 0.125rem; }

  .udfdsb-site-nav a,
  .udfdsb-nav-dropdown-trigger {
    font-size: 0.8125rem;
    padding: 0.375rem 0.5rem;
  }

  .udfdsb-site-logo-text small { display: none; }

  .udfdsb-nav-dropdown-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    min-width: 0;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
}

@media (max-width: 480px) {
  .udfdsb-site-nav a,
  .udfdsb-nav-dropdown-trigger {
    font-size: 0.75rem;
    padding: 0.375rem 0.375rem;
  }

  .udfdsb-site-logo-icon { width: 30px; height: 30px; font-size: 0.875rem; }
  .udfdsb-site-logo { font-size: 1rem; gap: 0.375rem; }
}

/* Mini widget embed styles */
.udfdsb-fx-widget {
  font-family: var(--font-sans);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  max-width: 320px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.udfdsb-fx-widget-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

.udfdsb-fx-widget-rate {
  font-size: 1.75rem;
  font-weight: 700;
}

.udfdsb-fx-widget-meta {
  font-size: 0.8125rem;
  opacity: 0.75;
  margin-top: 0.25rem;
}

.udfdsb-breadcrumb {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.udfdsb-breadcrumb a { color: var(--color-text-muted); }
.udfdsb-breadcrumb a:hover { color: var(--color-primary); }

/* === Enhanced components === */


.udfdsb-form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.375rem;
}

.udfdsb-form-control-sm { max-width: 180px; padding: 0.5rem 0.75rem; font-size: 0.8125rem; }

.udfdsb-card-accent {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: var(--shadow-md);
}

.udfdsb-card-compact { padding: 1rem 1.25rem; margin-bottom: 1rem; }

.udfdsb-card-tip {
  background: var(--color-primary-light);
  border-color: rgba(99, 102, 241, 0.25);
}

.udfdsb-panel-section { margin-bottom: 1.25rem; }
.udfdsb-panel-section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.udfdsb-panel-title { font-size: 1rem; font-weight: 700; margin-bottom: 1rem; }

.udfdsb-sidebar-stack { display: flex; flex-direction: column; gap: 1rem; }
.udfdsb-sidebar-title { font-size: 0.9375rem; font-weight: 700; margin-bottom: 0.75rem; }
.udfdsb-sidebar-list { font-size: 0.875rem; color: var(--color-text-muted); padding-left: 1.25rem; }
.udfdsb-sidebar-list li { margin-bottom: 0.5rem; }
.udfdsb-sidebar-text { font-size: 0.8125rem; color: var(--color-text-muted); line-height: 1.5; }

.udfdsb-hint { font-size: 0.75rem; color: var(--color-text-muted); }

.udfdsb-amount-lg { font-size: 2rem !important; font-weight: 700; text-align: center; padding: 1rem !important; }

.udfdsb-quick-amounts, .udfdsb-toolbar-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }

.udfdsb-chip {
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  color: var(--color-text-secondary);
}

.udfdsb-chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.udfdsb-chip.udfdsb-active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.udfdsb-target-currency-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  background: var(--color-bg-muted);
  margin-top: 0.75rem;
}

.udfdsb-target-check-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.375rem;
  font-size: 0.875rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.udfdsb-target-check-item:hover { background: var(--color-bg-elevated); }
.udfdsb-target-check-symbol { width: 1.5rem; font-weight: 600; text-align: center; }
.udfdsb-target-check-code { font-weight: 600; min-width: 2.5rem; }
.udfdsb-target-check-name { flex: 1; color: var(--color-text-muted); font-size: 0.8125rem; }

.udfdsb-badge {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
}

.udfdsb-badge-muted { background: var(--color-bg-muted); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.udfdsb-badge-live { background: #d1fae5; color: #065f46; }
@media (prefers-color-scheme: dark) {
  .udfdsb-badge-live { background: #064e3b; color: #6ee7b7; }
}

.udfdsb-results-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--color-border);
  margin-top: 0.5rem;
}

.udfdsb-results-grid { gap: 0.5rem; }

.udfdsb-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.125rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.udfdsb-result-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.udfdsb-result-main { display: flex; align-items: center; gap: 0.875rem; flex: 1; min-width: 0; }

.udfdsb-result-flag {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: 1.125rem;
  font-weight: 700;
  flex-shrink: 0;
}

.udfdsb-result-item .udfdsb-code { display: block; font-weight: 700; font-size: 1rem; }
.udfdsb-result-item .udfdsb-name { display: block; font-size: 0.75rem; color: var(--color-text-muted); }
.udfdsb-rate-hint { display: block; font-size: 0.6875rem; color: var(--color-text-muted); margin-top: 0.125rem; }

.udfdsb-result-actions { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.udfdsb-result-item .udfdsb-value { font-weight: 700; font-size: 1.125rem; font-variant-numeric: tabular-nums; }
.udfdsb-result-item .udfdsb-value.udfdsb-na { font-size: 0.8125rem; color: var(--color-text-muted); font-weight: 500; }

.udfdsb-btn-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition);
}

.udfdsb-btn-icon:hover { background: var(--color-primary); border-color: var(--color-primary); }

.udfdsb-rate-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.75rem;
  background: var(--color-bg-muted);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
}

.udfdsb-rate-meta-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.udfdsb-link-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  font-family: inherit;
}

.udfdsb-empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--color-text-muted);
}

.udfdsb-empty-icon { font-size: 2rem; display: block; margin-bottom: 0.5rem; }

/* Currency select */
.udfdsb-currency-select { position: relative; }

.udfdsb-currency-select-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.udfdsb-currency-select-trigger:hover,
.udfdsb-currency-select-trigger:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.udfdsb-currency-select-chevron { opacity: 0.5; font-size: 0.75rem; }

.udfdsb-currency-select-dropdown {
  /* position: absolute; */
  z-index: 50;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  max-height: 320px;
  display: flex;
  flex-direction: column;
}

.udfdsb-currency-select-search { margin-bottom: 0.5rem; flex-shrink: 0; }

.udfdsb-currency-select-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.udfdsb-currency-select-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
}

.udfdsb-currency-select-option:hover,
.udfdsb-currency-select-option.udfdsb-selected {
  background: var(--color-primary-light);
}

.udfdsb-opt-symbol { width: 1.75rem; font-weight: 700; text-align: center; }
.udfdsb-opt-code { font-weight: 600; min-width: 2.5rem; }
.udfdsb-opt-name { color: var(--color-text-muted); font-size: 0.8125rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Symbols */
.udfdsb-symbols-toolbar { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
.udfdsb-symbols-meta { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: 1rem; }

.udfdsb-letter-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.udfdsb-letter-chip {
  min-width: 2rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-muted);
  font-family: inherit;
}

.udfdsb-letter-chip:hover { background: var(--color-bg-muted); color: var(--color-text); }
.udfdsb-letter-chip.udfdsb-active { background: var(--color-primary); color: #fff; }

.udfdsb-data-table th.udfdsb-sortable { cursor: pointer; user-select: none; }
.udfdsb-data-table th.udfdsb-sortable:hover { color: var(--color-primary); }
.udfdsb-data-table th.udfdsb-sort-asc::after { content: " \2191"; }
.udfdsb-data-table th.udfdsb-sort-desc::after { content: " \2193"; }

.udfdsb-copy-cell {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
  padding: 0;
}

.udfdsb-copy-cell:hover { color: var(--color-primary); }
.udfdsb-code-link strong { text-decoration: underline dotted; }

/* Pairs */
.udfdsb-pairs-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.udfdsb-pair-card { padding: 1.25rem !important; }
.pair-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.pair-flags { font-size: 1.125rem; }
.pair-code { font-size: 0.8125rem; font-weight: 700; color: var(--color-text-muted); }
.pair-rate { font-size: 1.625rem; font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; margin: 0.25rem 0; }
.pair-inverse { font-size: 0.75rem; color: var(--color-text-muted); }
.pair-desc { font-size: 0.8125rem; color: var(--color-text-secondary); margin-top: 0.375rem; }
.pair-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 0.875rem; padding-top: 0.75rem; border-top: 1px solid var(--color-border); }
.pair-tag { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); }

/* Widget */
.theme-presets { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }

.theme-preset {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: var(--color-bg-muted);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.theme-preset.udfdsb-active { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }

.udfdsb-embed-mode-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
}

.udfdsb-embed-mode-tabs label { display: flex; align-items: center; gap: 0.375rem; cursor: pointer; }

.udfdsb-widget-preview {
  background: repeating-conic-gradient(var(--color-bg-muted) 0% 25%, transparent 0% 50%) 50% / 16px 16px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Toast */
.udfdsb-toast-root {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.udfdsb-toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s, transform 0.3s;
}

.udfdsb-toast.udfdsb-show { opacity: 1; transform: translateY(0); }
.udfdsb-toast-info { background: var(--color-primary); color: #fff; }
.udfdsb-toast-error { background: var(--color-danger); color: #fff; }

/* Tool cards homepage */
.udfdsb-tool-card { display: flex; flex-direction: column; }
.udfdsb-tool-card .udfdsb-btn { margin-top: auto; align-self: flex-start; }

.udfdsb-tools-grid .udfdsb-card strong { font-size: 0.9375rem; }

.udfdsb-section-muted {
  background: var(--color-bg-muted);
  border-block: 1px solid var(--color-border);
}

.udfdsb-section-header-center { text-align: center; }
.udfdsb-section-header-center p { max-width: 720px; margin: 0 auto; }

.udfdsb-disclaimer-center {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  max-width: 640px;
  margin: 1.5rem auto 0;
}

.udfdsb-quick-link-card {
  padding: 1rem 1.25rem;
  color: inherit !important;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.udfdsb-quick-link-card span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.udfdsb-tools-grid-compact { margin-top: 0; }

/* === Widget Generator === */
.udfdsb-widget-generator-page .udfdsb-tool-page-header { margin-bottom: 1.5rem; }

.udfdsb-widget-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
  padding-bottom: 3rem;
}

@media (max-width: 1024px) {
  .udfdsb-widget-builder { grid-template-columns: 1fr; }
}

.udfdsb-widget-config { position: sticky; top: calc(var(--header-height) + 1rem); }

.udfdsb-config-section-title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin: 1.5rem 0 0.375rem;
  padding-top: 0.25rem;
}

.udfdsb-config-section-title:first-child { margin-top: 0; }

.udfdsb-config-section-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.udfdsb-layout-presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.625rem;
}

.udfdsb-layout-preset {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.375rem;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: all var(--transition);
}

.udfdsb-layout-preset:hover { border-color: var(--color-primary); }
.udfdsb-layout-preset.udfdsb-active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.udfdsb-layout-preset-name { font-size: 0.8125rem; font-weight: 700; color: var(--color-text); }
.udfdsb-layout-preset-desc { font-size: 0.6875rem; color: var(--color-text-muted); line-height: 1.3; }

.udfdsb-layout-preset-mini {
  width: 100%;
  height: 36px;
  border-radius: 6px;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.udfdsb-layout-mini-classic::before {
  content: "";
  position: absolute;
  left: 8px; right: 8px; top: 8px; height: 6px;
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.6;
}
.udfdsb-layout-mini-classic::after {
  content: "";
  position: absolute;
  left: 8px; right: 20px; bottom: 8px; height: 4px;
  background: var(--color-text-muted);
  border-radius: 2px;
  opacity: 0.35;
}

.udfdsb-layout-mini-compact { display: flex; align-items: center; justify-content: center; gap: 4px; }
.udfdsb-layout-mini-compact::before, .udfdsb-layout-mini-compact::after {
  content: "";
  width: 28%; height: 10px;
  background: var(--color-text-muted);
  border-radius: 2px;
  opacity: 0.4;
}
.udfdsb-layout-mini-compact { background: linear-gradient(90deg, transparent 42%, var(--color-primary) 42%, var(--color-primary) 48%, transparent 48%); }

.udfdsb-layout-mini-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-elevated);
}
.udfdsb-layout-mini-card::after {
  content: "";
  position: absolute;
  left: 12px; top: 12px; width: 50%; height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.5;
}

.udfdsb-layout-mini-minimal::before {
  content: "";
  position: absolute;
  left: 10px; right: 10px; top: 50%;
  transform: translateY(-50%);
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.55;
}

.udfdsb-layout-mini-bold { border-left: 4px solid var(--color-primary); }
.udfdsb-layout-mini-bold::after {
  content: "";
  position: absolute;
  left: 12px; right: 10px; top: 10px; height: 12px;
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.45;
}

.udfdsb-layout-mini-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 4px;
}
.udfdsb-layout-mini-split::before, .udfdsb-layout-mini-split::after {
  content: "";
  height: 14px;
  background: var(--color-text-muted);
  border-radius: 2px;
  opacity: 0.35;
}

.udfdsb-size-presets-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.udfdsb-size-preset {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.625rem 1rem;
  min-width: 72px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.udfdsb-size-preset strong { font-size: 0.8125rem; }
.udfdsb-size-preset span { font-size: 0.6875rem; color: var(--color-text-muted); }
.udfdsb-size-preset:hover { border-color: var(--color-primary); }
.udfdsb-size-preset.udfdsb-active { border-color: var(--color-primary); background: var(--color-primary-light); }

.udfdsb-theme-mode-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.udfdsb-theme-mode-option { cursor: pointer; }
.udfdsb-theme-mode-option input { position: absolute; opacity: 0; pointer-events: none; }

.udfdsb-theme-mode-card {
  display: block;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  text-align: center;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.udfdsb-theme-mode-dark { background: #1e293b; color: #f8fafc; }
.udfdsb-theme-mode-light { background: #fff; color: #0f172a; border-color: #e2e8f0; }

.udfdsb-theme-mode-option input:checked + .udfdsb-theme-mode-card {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.udfdsb-accent-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.udfdsb-accent-swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
  box-shadow: var(--shadow-sm);
}

.udfdsb-accent-swatch:hover { transform: scale(1.08); }
.udfdsb-accent-swatch.udfdsb-active { border-color: var(--color-text); transform: scale(1.1); }

.udfdsb-currency-pair-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0.75rem;
  align-items: end;
}

.udfdsb-swap-btn-lg {
  width: 48px;
  height: 48px;
  margin-bottom: 0.125rem;
}

.udfdsb-widget-output {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.udfdsb-widget-preview-large {
  min-height: 280px;
  padding: 2.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.udfdsb-widget-preview-frame {
  width: 100%;
  display: flex;
  justify-content: center;
}

.udfdsb-widget-preview-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  width: 100%;
}

.udfdsb-embed-rate-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.udfdsb-btn-copy-block { width: 100%; margin-top: 1rem; }

.udfdsb-widget-code-card .udfdsb-embed-code { max-height: 320px; }

/* === Tool Article Sections === */
.udfdsb-tool-article {
  margin-top: 3rem;
  padding: 2rem 1.5rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.udfdsb-tool-article h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-primary-light);
}

.udfdsb-tool-article h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-text);
}

.udfdsb-tool-article p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.udfdsb-tool-article ul {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.udfdsb-tool-article ul li {
  margin-bottom: 0.5rem;
}

/* === Blog List Page === */
.udfdsb-blog-page-header {
  text-align: center;
  padding: 3rem 1rem 1rem;
}

.udfdsb-blog-page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.udfdsb-blog-page-header p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  max-width: 560px;
  margin: 0 auto;
}

.udfdsb-blog-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 3rem;
}

.udfdsb-blog-card {
  display: block;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: box-shadow 0.2s, border-color 0.2s;
  cursor: pointer;
}

.udfdsb-blog-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.1);
}

.udfdsb-blog-card .udfdsb-blog-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 0.2rem 0.7rem;
  border-radius: 30px;
  margin-bottom: 0.5rem;
}

.udfdsb-blog-card .udfdsb-blog-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.udfdsb-blog-card .udfdsb-blog-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.udfdsb-blog-card .udfdsb-blog-excerpt {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.udfdsb-blog-card:hover .udfdsb-blog-title {
  color: var(--color-primary);
}

/* === Article Detail Page === */
.udfdsb-article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.udfdsb-article-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.udfdsb-article-header h1 {
  font-size: 2.4rem;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.udfdsb-article-meta {
  display: flex;
  gap: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.udfdsb-article-category {
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.2rem 0.9rem;
  border-radius: 30px;
  font-weight: 500;
  font-size: 0.8125rem;
}

.udfdsb-article-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.375rem 0;
}

.udfdsb-article-back-link:hover {
  color: var(--color-primary-hover);
}

.udfdsb-article-content h2 {
  font-size: 1.6rem;
  margin: 1.8rem 0 0.8rem;
  color: var(--color-text);
}

.udfdsb-article-content h3 {
  font-size: 1.3rem;
  margin: 1.4rem 0 0.5rem;
  color: var(--color-text);
}

.udfdsb-article-content p {
  line-height: 1.7;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.udfdsb-article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-elevated);
  padding: 0.75rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 12px 12px 0;
  color: var(--color-text);
  font-style: italic;
}

.udfdsb-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--color-bg-elevated);
  border-radius: 12px;
  overflow: hidden;
}

.udfdsb-article-content th,
.udfdsb-article-content td {
  border: 1px solid var(--color-border);
  padding: 0.75rem;
  text-align: left;
  font-size: 0.875rem;
}

.udfdsb-article-content th {
  background: var(--color-primary-light);
  font-weight: 600;
}

.udfdsb-article-content ul,
.udfdsb-article-content ol {
  margin: 1rem 0 1rem 1.8rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.udfdsb-article-content li {
  margin-bottom: 0.375rem;
}

.udfdsb-insight,
.udfdsb-tip-box {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

.udfdsb-future-card {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #fff;
  border-radius: 20px;
  padding: 1.5rem;
  margin: 1.8rem 0;
}

.udfdsb-future-card p { color: #cbd5e1; }

@media (max-width: 640px) {
  .udfdsb-article-header h1 { font-size: 1.8rem; }
  .udfdsb-article-container { padding: 1.5rem 1rem; }
  .udfdsb-blog-card { padding: 1.25rem; }
  .udfdsb-blog-card .udfdsb-blog-title { font-size: 1.125rem; }
}