.container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 1.5rem;
      }

      /* Hero Section */

      .hero::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.15" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
        background-size: cover;
        background-position: bottom;
        opacity: 0.5;
      }


      .hero h1 {
        font-size: clamp(2.5rem, 5vw, 3.5rem);
        font-weight: 800;
        margin-bottom: 1rem;
        font-family: "Poppins", sans-serif;
        text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      }

      .hero p {
        font-size: clamp(1.1rem, 2.5vw, 1.35rem);
        opacity: 0.95;
        max-width: 700px;
        margin: 0 auto;
      }

      /* Section Styles */
      .section {
        padding: 5rem 0;
      }

      .section-alt {
        background: var(--bg-secondary);
      }

      .section-title {
        font-family: "Poppins", sans-serif;
        font-size: 2.5rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 1rem;
        color: var(--text-primary);
      }

      .section-subtitle {
        text-align: center;
        color: var(--text-secondary);
        font-size: 1.1rem;
        margin-bottom: 3rem;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
      }

      /* Vocabulary Grid */
      .vocab-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        margin-bottom: 3rem;
      }

      .vocab-card {
        background: white;
        border-radius: 20px;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: all 0.3s ease;
        border: 2px solid var(--border-color);
        text-align: center;
      }

      .vocab-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-xl);
        border-color: var(--primary-color);
      }

      .vocab-image {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 12px;
        margin-bottom: 1.5rem;
        background: var(--bg-secondary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 4rem;
        color: var(--text-light);
      }

      .vocab-word {
        font-size: 1.75rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
        font-family: "Poppins", sans-serif;
      }

      .vocab-pronunciation {
        font-size: 1rem;
        color: var(--text-secondary);
        font-style: italic;
        margin-bottom: 1rem;
      }

      .vocab-definition {
        font-size: 1rem;
        color: var(--text-primary);
        line-height: 1.6;
        margin-bottom: 1rem;
      }

      .vocab-example {
        font-size: 0.95rem;
        color: var(--text-secondary);
        font-style: italic;
        padding: 1rem;
        background: rgba(70, 187, 229, 0.05);
        border-radius: 8px;
        border-left: 3px solid var(--primary-color);
      }

      /* Category Tabs */
      .category-tabs {
        display: flex;
        gap: 1rem;
        margin-bottom: 2rem;
        flex-wrap: wrap;
        justify-content: center;
      }

      .category-tab {
        padding: 0.75rem 1.5rem;
        background: white;
        border: 2px solid var(--border-color);
        border-radius: 25px;
        cursor: pointer;
        transition: all 0.3s ease;
        font-weight: 600;
        color: var(--text-primary);
      }

      .category-tab:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
      }

      .category-tab.active {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: white;
      }

      /* Quick Tips */
      .tips-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
        margin-top: 3rem;
      }

      .tip-card {
        background: white;
        border-radius: 16px;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        border-left: 4px solid var(--primary-color);
        transition: all 0.3s ease;
      }

      .tip-card:hover {
        transform: translateX(5px);
        box-shadow: var(--shadow-lg);
      }

      .tip-icon {
        font-size: 2rem;
        color: var(--primary-color);
        margin-bottom: 1rem;
      }

      .tip-card h3 {
        font-size: 1.25rem;
        font-weight: 700;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
      }

      .tip-card p {
        color: var(--text-secondary);
        line-height: 1.6;
      }

      /* CTA Button */
      .cta-button {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 1rem 2rem;
        background: var(--primary-color);
        color: white;
        text-decoration: none;
        border-radius: 12px;
        font-weight: 600;
        transition: all 0.3s ease;
        box-shadow: var(--shadow-md);
      }

      .cta-button:hover {
        background: var(--primary-hover);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
      }

      .back-link {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        color: var(--primary-color);
        text-decoration: none;
        font-weight: 600;
        margin-bottom: 2rem;
        transition: all 0.3s ease;
      }

      .back-link:hover {
        gap: 1rem;
      }

      /* Back to Top */
      .back-to-top {
        position: fixed;
        bottom: 2rem;
        right: 2rem;
        width: 50px;
        height: 50px;
        background: var(--primary-color);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        text-decoration: none;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: var(--shadow-lg);
        z-index: 1000;
      }

      .back-to-top.show {
        opacity: 1;
        visibility: visible;
      }

      .back-to-top:hover {
        transform: translateY(-3px);
      }

      /* Store Types Grid */
      .stores-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
        margin-top: 2rem;
      }

      .store-card {
        background: white;
        border: 2px solid var(--border-color);
        border-radius: 12px;
        padding: 1.5rem;
        text-align: center;
        transition: all 0.3s ease;
        cursor: pointer;
      }

      .store-card:hover {
        border-color: var(--primary-color);
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
      }

      .store-card i {
        font-size: 2.5rem;
        color: var(--primary-color);
        margin-bottom: 0.75rem;
      }

      .store-card h4 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 0.5rem;
      }

      .store-card p {
        font-size: 0.9rem;
        color: var(--text-secondary);
      }

      /* Shopping Tip Box */
      .info-box {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        padding: 2rem;
        border-radius: 16px;
        margin-bottom: 3rem;
        box-shadow: var(--shadow-lg);
      }

      .info-box h3 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
      }

      .info-box p {
        line-height: 1.8;
        opacity: 0.95;
      }

      /* Responsive */
      @media (max-width: 768px) {
        .hero {
          margin-top: 0;
          padding: 3rem 0;
        }

        .section {
          padding: 3rem 0;
        }

        .section-title {
          font-size: 2rem;
        }

        .vocab-grid {
          grid-template-columns: 1fr;
          gap: 1.5rem;
        }

        .category-tabs {
          flex-direction: column;
        }

        .category-tab {
          width: 100%;
          text-align: center;
        }

        .stores-grid {
          grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        }
      }

      /* Placeholder image style */
      .vocab-image-placeholder {
        width: 100%;
        height: 200px;
        background: var(--shopping-gradient);
        border-radius: 12px;
        margin-bottom: 1.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 4rem;
      }

      /* Ensure mobile dropdowns work properly */
      @media (max-width: 768px) {
        /* FORCE mobile menu to display full width */
        .nav-links,
        #navLinks,
        ul.nav-links {
          display: flex !important;
          position: fixed !important;
          top: 70px !important;
          left: 0 !important;
          right: 0 !important;
          bottom: 0 !important;
          width: 100vw !important;
          height: auto !important;
          min-height: calc(100vh - 70px) !important;
        }

        .nav-links.active,
        #navLinks.active,
        ul.nav-links.active {
          display: flex !important;
          max-height: calc(100vh - 70px) !important;
          height: auto !important;
        }

        /* Make sure nav links with dropdowns are clearly tappable */
        .nav-item .nav-link {
          position: relative;
          user-select: none;
          -webkit-user-select: none;
          -webkit-tap-highlight-color: rgba(70, 187, 229, 0.2);
          cursor: pointer;
        }

        /* Ensure chevron is visible and clickable */
        .nav-link .fa-chevron-down {
          transition: transform 0.3s ease !important;
          opacity: 1 !important;
          pointer-events: none; /* Let clicks go through to parent link */
        }

        /* Visual feedback when dropdown is open */
        .nav-item.mobile-open > .nav-link,
        .nav-item.mobile-dropdown-open > .nav-link {
          background: rgba(70, 187, 229, 0.15) !important;
          border-color: var(--primary-color, #46bbe5) !important;
        }

        /* Make dropdowns smoother */
        .dropdown {
          transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
            padding 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        }

        /* Ensure dropdown items are visible when parent is open */
        .nav-item.mobile-open .dropdown,
        .nav-item.mobile-dropdown-open .dropdown {
          display: block !important;
          visibility: visible !important;
          opacity: 1 !important;
          pointer-events: auto !important;
        }

        /* Ensure dropdown items are clickable */
        .dropdown-item,
        .dropdown > a {
          pointer-events: auto !important;
          touch-action: manipulation !important;
          user-select: none;
          -webkit-user-select: none;
        }
      }