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

    :root {
      --background: #ffffff;
      --foreground: #0f172a;
      --card: #f8fafc;
      --card-hover: #f1f5f9;
      --border: #e2e8f0;
      --muted: #64748b;
      --accent: #2563eb;
      --accent-hover: #1d4ed8;
      --success: #22c55e;
      --warning: #f59e0b;
    }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background-color: var(--background);
      color: var(--foreground);
      line-height: 1.6;
      min-height: 100vh;
    }

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

    .header-content {
      max-width: 1400px;
      margin: 0 auto;
      padding: 1rem 1.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--foreground);
      text-decoration: none;
    }

    .logo svg {
      width: 28px;
      height: 28px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .nav-link {
      padding: 0.5rem 1rem;
      color: var(--muted);
      text-decoration: none;
      font-size: 0.875rem;
      font-weight: 500;
      border-radius: 6px;
      transition: all 0.15s;
    }

    .nav-link:hover {
      color: var(--foreground);
      background: var(--card);
    }

    .nav-link.active {
      color: var(--foreground);
      background: var(--card);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.5rem 1rem;
      border-radius: 8px;
      font-size: 0.875rem;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s;
      text-decoration: none;
      border: none;
    }

    .btn-primary {
      background: var(--foreground);
      color: var(--background);
    }

    .btn-primary:hover {
      opacity: 0.9;
    }

    .btn-secondary {
      background: var(--card);
      color: var(--foreground);
      border: 1px solid var(--border);
    }

    .btn-secondary:hover {
      background: var(--card-hover);
    }

    .btn-ghost {
      background: transparent;
      color: var(--muted);
    }

    .btn-ghost:hover {
      color: var(--foreground);
      background: var(--card);
    }

    /* Hero Section */
    .hero {
      text-align: center;
      padding: 3rem 1.5rem 2rem;
      max-width: 800px;
      margin: 0 auto;
    }

    .hero h1 {
      font-size: clamp(1.75rem, 4vw, 2.5rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 0.75rem;
      text-wrap: balance;
    }

    .hero p {
      font-size: 1rem;
      color: var(--muted);
      max-width: 500px;
      margin: 0 auto;
      text-wrap: pretty;
    }

    /* Main Content */
    .main-content {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 1.5rem 4rem;
    }

    /* Tool Selector Section */
    .selector-section {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 1.5rem;
      margin-bottom: 2rem;
    }

    .selector-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1rem;
      flex-wrap: wrap;
      gap: 1rem;
    }

    .selector-title {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--foreground);
    }

    .clear-btn {
      font-size: 0.8125rem;
      color: var(--muted);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 0.375rem;
    }

    .clear-btn:hover {
      color: var(--foreground);
    }

    .tool-selectors {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1rem;
    }

    .tool-selector {
      position: relative;
    }

    .selector-label {
      display: block;
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--muted);
      margin-bottom: 0.375rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .selector-dropdown {
      position: relative;
    }

    .selector-input {
      width: 100%;
      padding: 0.75rem 2.5rem 0.75rem 1rem;
      background: var(--background);
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 0.875rem;
      color: var(--foreground);
      cursor: pointer;
      outline: none;
      transition: border-color 0.2s;
    }

    .selector-input:focus {
      border-color: var(--accent);
    }

    .selector-input::placeholder {
      color: var(--muted);
    }

    .dropdown-arrow {
      position: absolute;
      right: 0.75rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--muted);
      pointer-events: none;
    }

    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      margin-top: 0.25rem;
      background: var(--background);
      border: 1px solid var(--border);
      border-radius: 8px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
      max-height: 300px;
      overflow-y: auto;
      z-index: 50;
      display: none;
    }

    .dropdown-menu.open {
      display: block;
    }

    .dropdown-category {
      padding: 0.5rem 0.75rem;
      font-size: 0.6875rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--muted);
      background: var(--card);
      position: sticky;
      top: 0;
    }

    .dropdown-item {
      padding: 0.625rem 0.75rem;
      font-size: 0.875rem;
      color: var(--foreground);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: background 0.15s;
    }

    .dropdown-item:hover {
      background: var(--card);
    }

    .dropdown-item.selected {
      background: rgba(37, 99, 235, 0.1);
      color: var(--accent);
    }

    .dropdown-item-category {
      font-size: 0.75rem;
      color: var(--muted);
    }

    /* Comparison Table */
    .comparison-section {
      margin-top: 2rem;
    }

    .comparison-empty {
      text-align: center;
      padding: 4rem 2rem;
      background: var(--card);
      border: 1px dashed var(--border);
      border-radius: 12px;
    }

    .comparison-empty svg {
      width: 64px;
      height: 64px;
      color: var(--muted);
      margin-bottom: 1rem;
      opacity: 0.5;
    }

    .comparison-empty h3 {
      font-size: 1.125rem;
      color: var(--foreground);
      margin-bottom: 0.5rem;
    }

    .comparison-empty p {
      color: var(--muted);
      font-size: 0.875rem;
    }

    .comparison-table-wrapper {
      overflow-x: auto;
      border: 1px solid var(--border);
      border-radius: 12px;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 600px;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 1rem 1.25rem;
      border-bottom: 1px solid var(--border);
      border-right: 1px solid var(--border);
      text-align: center;
      vertical-align: middle;
      font-size: 0.875rem;
    }

    .comparison-table th:last-child,
    .comparison-table td:last-child {
      border-right: none;
    }

    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    .comparison-table thead th {
      background: var(--card);
      padding: 1.25rem;
    }

    .comparison-table thead th:first-child {
      background: var(--card-hover);
    }

    .comparison-table tbody td:first-child {
      background: var(--card);
      font-weight: 500;
      text-align: left;
      min-width: 180px;
    }

    .tool-header {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.5rem;
    }

    .tool-logo {
      width: 48px;
      height: 48px;
      background: var(--background);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      border: 1px solid var(--border);
    }

    .tool-name {
      font-size: 1rem;
      font-weight: 600;
      color: var(--foreground);
    }

    .tool-category-badge {
      font-size: 0.6875rem;
      padding: 0.25rem 0.5rem;
      background: rgba(37, 99, 235, 0.1);
      color: var(--accent);
      border-radius: 999px;
      white-space: nowrap;
    }

    .feature-name {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .feature-icon {
      color: var(--muted);
    }

    .check-icon {
      color: var(--success);
    }

    .x-icon {
      color: #ef4444;
    }

    .partial-icon {
      color: var(--warning);
    }

    .rating {
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }

    .rating-star {
      color: var(--warning);
    }

    .rating-star.empty {
      color: var(--border);
    }

    .price-tag {
      font-weight: 600;
      color: var(--foreground);
    }

    .price-free {
      color: var(--success);
    }

    /* Quick Compare Suggestions */
    .suggestions-section {
      margin-top: 3rem;
    }

    .suggestions-title {
      font-size: 1.125rem;
      font-weight: 600;
      margin-bottom: 1rem;
      color: var(--foreground);
    }

    .suggestions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 1rem;
    }

    .suggestion-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 1rem;
      cursor: pointer;
      transition: all 0.2s;
    }

    .suggestion-card:hover {
      border-color: #cbd5e1;
      transform: translateY(-2px);
    }

    .suggestion-title {
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: var(--foreground);
    }

    .suggestion-tools {
      display: flex;
      flex-wrap: wrap;
      gap: 0.375rem;
      margin-bottom: 0.75rem;
    }

    .suggestion-tool {
      font-size: 0.75rem;
      padding: 0.25rem 0.5rem;
      background: var(--border);
      border-radius: 4px;
      color: var(--muted);
    }

    .suggestion-category {
      font-size: 0.75rem;
      color: var(--accent);
    }

    /* Responsive */
    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }

      .tool-selectors {
        grid-template-columns: 1fr;
      }
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }

    ::-webkit-scrollbar-track {
      background: var(--background);
    }

    ::-webkit-scrollbar-thumb {
      background: var(--border);
      border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
      background: #cbd5e1;
    }

    /* Animations */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .comparison-table-wrapper {
      animation: fadeIn 0.3s ease-out;
    }