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

    body {
      font-family: 'Inter', sans-serif;
      background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
      color: #1e293b;
      overflow-x: hidden;
      box-sizing: border-box;
    }

    html, body {
      height: 100%;
    }

    .app-wrapper {
      width: 100%;
      min-height: 100%;
      overflow-y: auto;
    }

    /* Header */
    .header-container {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      padding: 1.2rem 0;
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 20px rgba(59, 130, 246, 0.1);
      transition: all 0.3s ease;
    }

    .header-content {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo-section {
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }

    .logo-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
    }

    .logo-text {
      font-size: 1.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .nav-menu {
      display: flex;
      gap: 2rem;
      list-style: none;
      align-items: center;
    }

    .nav-menu a {
      text-decoration: none;
      color: #475569;
      font-weight: 500;
      transition: color 0.3s ease;
      position: relative;
    }

    .nav-menu a:hover {
      color: #3b82f6;
    }

    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: -5px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, #3b82f6, #06b6d4);
      transition: width 0.3s ease;
    }

    .nav-menu a:hover::after {
      width: 100%;
    }

    .auth-buttons {
      display: flex;
      gap: 1rem;
      align-items: center;
    }

    .btn-login {
      padding: 0.6rem 1.5rem;
      border: 2px solid #3b82f6;
      background: transparent;
      color: #3b82f6;
      border-radius: 25px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-login:hover {
      background: #3b82f6;
      color: white;
      transform: translateY(-2px);
    }

    .btn-logout {
      padding: 0.6rem 1.5rem;
      border: 2px solid #ef4444;
      background: transparent;
      color: #ef4444;
      border-radius: 25px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-logout:hover {
      background: #ef4444;
      color: white;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .hero-section {
      background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 50%, #93c5fd 100%);
      padding: 6rem 2rem;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .floating-icon {
      position: absolute;
      opacity: 0.1;
      animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
      0%, 100% { transform: translateY(0) rotate(0deg); }
      50% { transform: translateY(-20px) rotate(5deg); }
    }

    .hero-content {
      max-width: 800px;
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .hero-headline {
      font-size: 3.5rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 1.5rem;
      line-height: 1.2;
      animation: fadeInUp 1s ease;
    }

    .hero-subtext {
      font-size: 1.3rem;
      color: #475569;
      margin-bottom: 2.5rem;
      animation: fadeInUp 1s ease 0.2s backwards;
    }

    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .hero-buttons {
      display: flex;
      gap: 1.5rem;
      justify-content: center;
      animation: fadeInUp 1s ease 0.4s backwards;
    }

    .btn-primary {
      padding: 1rem 2.5rem;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      color: white;
      border: none;
      border-radius: 30px;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 6px 25px rgba(59, 130, 246, 0.4);
    }

    .btn-secondary {
      padding: 1rem 2.5rem;
      background: white;
      color: #3b82f6;
      border: 2px solid #3b82f6;
      border-radius: 30px;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-secondary:hover {
      background: #3b82f6;
      color: white;
      transform: translateY(-3px);
    }

    /* Health Categories */
    .categories-section {
      max-width: 1200px;
      margin: 4rem auto;
      padding: 0 2rem;
    }

    .section-title {
      text-align: center;
      font-size: 2.5rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 3rem;
    }

    .categories-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
    }

    .category-card {
      background: white;
      padding: 2rem;
      border-radius: 20px;
      text-align: center;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    }

    .category-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 15px 35px rgba(59, 130, 246, 0.2);
    }

    .category-icon {
      font-size: 3rem;
      margin-bottom: 1rem;
      display: inline-block;
      transition: transform 0.3s ease;
    }

    .category-card:hover .category-icon {
      transform: scale(1.2) rotate(5deg);
    }

    .category-title {
      font-size: 1.4rem;
      font-weight: 600;
      color: #1e293b;
      margin-bottom: 0.8rem;
    }

    .category-description {
      color: #64748b;
      line-height: 1.6;
    }

    /* Articles Section */
    .articles-section {
      max-width: 1200px;
      margin: 4rem auto;
      padding: 0 2rem;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }

    .article-card {
      background: white;
      border-radius: 20px;
      overflow: hidden;
      transition: all 0.4s ease;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    }

    .article-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
    }

    .article-image {
      width: 100%;
      height: 200px;
      background: linear-gradient(135deg, #bfdbfe 0%, #93c5fd 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 4rem;
    }

    .article-content {
      padding: 1.5rem;
    }

    .article-title {
      font-size: 1.3rem;
      font-weight: 600;
      color: #1e293b;
      margin-bottom: 0.8rem;
    }

    .article-excerpt {
      color: #64748b;
      line-height: 1.6;
      margin-bottom: 1rem;
    }

    .read-more {
      color: #3b82f6;
      font-weight: 600;
      text-decoration: none;
      display: inline-block;
      position: relative;
    }

    .read-more::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: #3b82f6;
      transition: width 0.3s ease;
    }

    .read-more:hover::after {
      width: 100%;
    }

    /* Health Tools */
    .tools-section {
      max-width: 1200px;
      margin: 4rem auto;
      padding: 0 2rem;
    }

    .tools-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
    }

    .tool-card {
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(10px);
      padding: 2rem;
      border-radius: 20px;
      border: 1px solid rgba(255, 255, 255, 0.3);
      transition: all 0.3s ease;
    }

    .tool-card:hover {
      background: rgba(255, 255, 255, 0.9);
      transform: translateY(-5px);
    }

    .tool-icon {
      font-size: 2.5rem;
      margin-bottom: 1rem;
    }

    .tool-title {
      font-size: 1.3rem;
      font-weight: 600;
      color: #1e293b;
      margin-bottom: 1rem;
    }

    .tool-input {
      width: 100%;
      padding: 0.8rem;
      border: 2px solid #e2e8f0;
      border-radius: 10px;
      margin-bottom: 0.8rem;
      font-size: 1rem;
      transition: border-color 0.3s ease;
    }

    .tool-input:focus {
      outline: none;
      border-color: #3b82f6;
    }

    .tool-button {
      width: 100%;
      padding: 0.8rem;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      color: white;
      border: none;
      border-radius: 10px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .tool-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    }

    .tool-result {
      margin-top: 1rem;
      padding: 1rem;
      background: #f0f9ff;
      border-radius: 10px;
      border-left: 4px solid #3b82f6;
      display: none;
    }

    /* Wellness Programs */
    .programs-section {
      max-width: 1200px;
      margin: 4rem auto;
      padding: 0 2rem;
    }

    .programs-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
    }

    .program-card {
      background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
      padding: 2rem;
      border-radius: 20px;
      transition: all 0.3s ease;
      cursor: pointer;
    }

    .program-card:hover {
      transform: scale(1.05);
      box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
    }

    .program-title {
      font-size: 1.4rem;
      font-weight: 600;
      color: #065f46;
      margin-bottom: 0.8rem;
    }

    .program-description {
      color: #047857;
      line-height: 1.6;
      margin-bottom: 1rem;
    }

    .program-duration {
      font-weight: 600;
      color: #059669;
    }

    /* Testimonials */
    .testimonials-section {
      max-width: 1200px;
      margin: 4rem auto;
      padding: 0 2rem;
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }

    .testimonial-card {
      background: white;
      padding: 2rem;
      border-radius: 20px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
      transition: all 0.3s ease;
    }

    .testimonial-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
    }

    .testimonial-avatar {
      width: 60px;
      height: 60px;
      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      margin-bottom: 1rem;
    }

    .testimonial-text {
      color: #475569;
      line-height: 1.8;
      margin-bottom: 1rem;
      font-style: italic;
    }

    .testimonial-author {
      font-weight: 600;
      color: #1e293b;
    }

    /* Newsletter */
    .newsletter-section {
      background: linear-gradient(135deg, #a78bfa 0%, #818cf8 100%);
      padding: 4rem 2rem;
      text-align: center;
      margin: 4rem 0;
    }

    .newsletter-content {
      max-width: 600px;
      margin: 0 auto;
    }

    .newsletter-title {
      font-size: 2rem;
      font-weight: 700;
      color: white;
      margin-bottom: 1.5rem;
    }

    .newsletter-form {
      display: flex;
      gap: 1rem;
      margin-bottom: 1rem;
    }

    .newsletter-input {
      flex: 1;
      padding: 1rem;
      border: none;
      border-radius: 25px;
      font-size: 1rem;
    }

    .newsletter-input:focus {
      outline: none;
    }

    .newsletter-buttons {
      display: flex;
      gap: 1rem;
    }

    .btn-subscribe {
      padding: 1rem 2rem;
      background: white;
      color: #8b5cf6;
      border: none;
      border-radius: 25px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-subscribe:hover {
      background: #fbbf24;
      color: white;
      transform: translateY(-2px);
    }

    .btn-unsubscribe {
      padding: 1rem 2rem;
      background: transparent;
      color: white;
      border: 2px solid white;
      border-radius: 25px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-unsubscribe:hover {
      background: white;
      color: #8b5cf6;
      transform: translateY(-2px);
    }

    /* Footer */
    .footer-section {
      background: #1e293b;
      padding: 3rem 2rem 1.5rem;
      color: white;
    }

    .footer-content {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 3rem;
      margin-bottom: 2rem;
    }

    .footer-column h3 {
      font-size: 1.3rem;
      margin-bottom: 1rem;
      color: #06b6d4;
    }

    .footer-column p,
    .footer-column a {
      color: #94a3b8;
      line-height: 1.8;
      text-decoration: none;
      display: block;
      margin-bottom: 0.5rem;
      transition: color 0.3s ease;
    }

    .footer-column a:hover {
      color: #06b6d4;
    }

    .social-icons {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }

    .social-icon {
      width: 40px;
      height: 40px;
      background: rgba(6, 182, 212, 0.2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .social-icon:hover {
      background: #06b6d4;
      transform: translateY(-3px);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 2rem;
      border-top: 1px solid #334155;
      color: #94a3b8;
    }

    /* Modal */
    .modal-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.7);
      z-index: 2000;
      justify-content: center;
      align-items: center;
      animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    .modal-content {
      background: white;
      padding: 2.5rem;
      border-radius: 20px;
      max-width: 500px;
      width: 90%;
      max-height: 80%;
      overflow-y: auto;
      position: relative;
      animation: slideUp 0.3s ease;
    }

    @keyframes slideUp {
      from { transform: translateY(50px); opacity: 0; }
      to { transform: translateY(0); opacity: 1; }
    }

    .modal-close {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: #f1f5f9;
      border: none;
      width: 35px;
      height: 35px;
      border-radius: 50%;
      cursor: pointer;
      font-size: 1.3rem;
      color: #475569;
      transition: all 0.3s ease;
    }

    .modal-close:hover {
      background: #e2e8f0;
      transform: rotate(90deg);
    }

    .modal-title {
      font-size: 2rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 1.5rem;
    }

    .form-group {
      margin-bottom: 1.5rem;
    }

    .form-label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
      color: #475569;
    }

    .form-input {
      width: 100%;
      padding: 0.8rem;
      border: 2px solid #e2e8f0;
      border-radius: 10px;
      font-size: 1rem;
      transition: border-color 0.3s ease;
    }

    .form-input:focus {
      outline: none;
      border-color: #3b82f6;
    }

    .form-button {
      width: 100%;
      padding: 1rem;
      background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
      color: white;
      border: none;
      border-radius: 10px;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .form-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    }

    .form-toggle {
      text-align: center;
      margin-top: 1.5rem;
      color: #64748b;
    }

    .form-toggle a {
      color: #3b82f6;
      text-decoration: none;
      font-weight: 600;
    }

    .form-toggle a:hover {
      text-decoration: underline;
    }

    .legal-content {
      color: #475569;
      line-height: 1.8;
    }

    .legal-content h3 {
      color: #1e293b;
      margin: 1.5rem 0 1rem;
    }

    .legal-content ul {
      margin-left: 1.5rem;
      margin-bottom: 1rem;
    }

    /* Article Detail Modal */
    .article-detail-modal .modal-content {
      max-width: 700px;
    }

    .article-detail-header {
      margin-bottom: 2rem;
    }

    .article-detail-title {
      font-size: 2.2rem;
      font-weight: 700;
      color: #1e293b;
      margin-bottom: 1rem;
    }

    .article-detail-meta {
      color: #64748b;
      font-size: 0.9rem;
    }

    .article-detail-body {
      color: #475569;
      line-height: 1.8;
      font-size: 1.05rem;
    }

    .article-detail-body p {
      margin-bottom: 1.2rem;
    }

    .article-detail-body h3 {
      color: #1e293b;
      margin: 2rem 0 1rem;
      font-size: 1.5rem;
    }

    .article-detail-body ul {
      margin-left: 1.5rem;
      margin-bottom: 1.5rem;
    }

    .article-detail-body li {
      margin-bottom: 0.8rem;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .hero-headline {
        font-size: 2.5rem;
      }

      .hero-subtext {
        font-size: 1.1rem;
      }

      .hero-buttons {
        flex-direction: column;
        gap: 1rem;
      }

      .nav-menu {
        display: none;
      }

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

      .newsletter-form {
        flex-direction: column;
      }

      .newsletter-buttons {
        flex-direction: column;
      }
    }