:root {
      --page-okking-primary-color: #e44d26; /* Cam đỏ */
      --page-okking-secondary-color: #333; /* Xám đậm */
      --page-okking-accent-color: #ffcc00; /* Vàng */
      --page-okking-background-light: #f5f5f5; /* Xám nhạt */
      --page-okking-background-dark: #222; /* Đen nhạt */
      --page-okking-text-color-light: #fff; /* Trắng */
      --page-okking-text-color-dark: #333; /* Xám đậm */
      --page-okking-button-bg: #ffcc00; /* Vàng */
      --page-okking-button-text: #333; /* Xám đậm */
      --page-okking-border-radius: 8px;
      --page-okking-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .page-okking {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-okking-text-color-dark);
      background-color: var(--page-okking-background-light);
      padding-bottom: 80px; /* Space for floating button */
    }

    .page-okking-section {
      padding: 30px 20px;
      margin: 0 auto;
      max-width: 1200px;
    }

    .page-okking-section.page-okking-dark-bg {
      background-color: var(--page-okking-background-dark);
      color: var(--page-okking-text-color-light);
    }

    .page-okking-section.page-okking-dark-bg h2,
    .page-okking-section.page-okking-dark-bg h3 {
      color: var(--page-okking-accent-color);
    }

    .page-okking-hero {
      position: relative;
      text-align: center;
      padding: 0; /* Remove padding as banner handles it */
      color: var(--page-okking-text-color-light);
      overflow: hidden;
      background-color: var(--page-okking-background-dark);
    }

    .page-okking-hero-banner-container {
      width: 100%;
      max-height: 400px; /* Adjust as needed */
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .page-okking-hero-banner {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      min-height: 200px; /* Ensure visibility on smaller screens */
    }

    .page-okking-hero-content {
      position: relative;
      padding: 30px 20px;
      background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.8) 100%);
      margin-top: -5px; /* Overlap slightly with banner for smooth transition */
    }

    .page-okking-hero h1 {
      font-size: 2.2em;
      margin-bottom: 10px;
      color: var(--page-okking-accent-color);
      text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    .page-okking-hero p {
      font-size: 1.1em;
      margin-bottom: 20px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      color: var(--page-okking-text-color-light);
    }

    .page-okking-button {
      display: inline-block;
      background-color: var(--page-okking-button-bg);
      color: var(--page-okking-button-text);
      padding: 12px 25px;
      border-radius: var(--page-okking-border-radius);
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }

    .page-okking-button:hover {
      background-color: #ffd733;
      transform: translateY(-2px);
    }

    .page-okking-floating-button-wrapper {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      display: flex;
      justify-content: center;
      padding: 15px 0;
      background-color: rgba(0, 0, 0, 0.9);
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
      border-top-left-radius: 15px;
      border-top-right-radius: 15px;
      transform: translateY(0);
      transition: transform 0.3s ease-out;
    }

    .page-okking-floating-button-wrapper.hidden {
      transform: translateY(100%);
    }

    .page-okking-floating-button {
      background-color: var(--page-okking-primary-color);
      color: var(--page-okking-text-color-light);
      padding: 14px 30px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      text-decoration: none;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-okking-pulse 1.5s infinite;
    }

    .page-okking-floating-button:hover {
      background-color: #c93a1d;
      animation: none;
    }

    @keyframes page-okking-pulse {
      0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(228, 77, 38, 0.7); }
      70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(228, 77, 38, 0); }
      100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(228, 77, 38, 0); }
    }

    .page-okking-icon {
      font-size: 1.3em;
    }

    .page-okking-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-okking-card {
      background-color: var(--page-okking-text-color-light);
      border-radius: var(--page-okking-border-radius);
      box-shadow: var(--page-okking-shadow);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-okking-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    }

    .page-okking-card-image-container {
      width: 100%;
      height: 180px;
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
      background-color: var(--page-okking-background-light);
    }

    .page-okking-card-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .page-okking-card-content {
      padding: 20px;
    }

    .page-okking-card h3 {
      font-size: 1.3em;
      margin-bottom: 10px;
      color: var(--page-okking-primary-color);
    }

    .page-okking-card p {
      font-size: 0.95em;
      color: #666;
    }

    .page-okking-text-center {
      text-align: center;
    }

    .page-okking-heading {
      font-size: 2em;
      margin-bottom: 20px;
      color: var(--page-okking-secondary-color);
      position: relative;
      display: inline-block;
      padding-bottom: 10px;
    }

    .page-okking-heading::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background-color: var(--page-okking-primary-color);
      border-radius: 2px;
    }

    .page-okking-list {
      list-style: none;
      padding: 0;
      margin: 20px 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 15px;
    }

    .page-okking-list li {
      background-color: var(--page-okking-text-color-light);
      padding: 15px 20px;
      border-radius: var(--page-okking-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.05em;
      color: var(--page-okking-text-color-dark);
      transition: transform 0.2s ease;
    }

    .page-okking-list li:hover {
      transform: translateX(5px);
    }

    .page-okking-list li::before {
      content: '✔';
      color: var(--page-okking-primary-color);
      font-weight: bold;
      margin-right: 5px;
    }

    .page-okking-promo-section {
      background: linear-gradient(135deg, var(--page-okking-primary-color), #c93a1d);
      color: var(--page-okking-text-color-light);
      padding: 40px 20px;
      border-radius: var(--page-okking-border-radius);
      text-align: center;
      margin: 40px auto;
    }

    .page-okking-promo-section h2 {
      color: var(--page-okking-accent-color);
      font-size: 2.5em;
      margin-bottom: 15px;
    }

    .page-okking-promo-section p {
      font-size: 1.2em;
      margin-bottom: 25px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-okking-cta-button {
      background-color: var(--page-okking-button-bg);
      color: var(--page-okking-button-text);
      padding: 15px 35px;
      font-size: 1.1em;
      border-radius: 50px;
      text-transform: uppercase;
      font-weight: bold;
    }

    .page-okking-provider-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
      gap: 15px;
      margin-top: 30px;
      justify-items: center;
    }

    .page-okking-provider-item {
      background-color: var(--page-okking-text-color-light);
      padding: 10px;
      border-radius: var(--page-okking-border-radius);
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      text-align: center;
      width: 100%;
      max-width: 100px;
    }

    .page-okking-provider-logo {
      width: 100%;
      height: auto;
      max-height: 40px;
      object-fit: contain;
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
      .page-okking-hero h1 {
        font-size: 3.5em;
      }
      .page-okking-hero p {
        font-size: 1.2em;
      }
      .page-okking-heading {
        font-size: 2.5em;
      }
      .page-okking-section {
        padding: 50px 30px;
      }
      .page-okking-floating-button-wrapper {
        width: auto;
        left: 50%;
        transform: translateX(-50%);
        bottom: 20px;
        padding: 10px 20px;
        border-radius: 50px;
      }
      .page-okking-floating-button-wrapper.hidden {
        transform: translateX(-50%) translateY(150%);
      }
      .page-okking-promo-section h2 {
        font-size: 3em;
      }
    }