:root {
      --page-85tobe-primary-color: #f7b731; /* Vàng cam */
      --page-85tobe-secondary-color: #3498db; /* Xanh dương */
      --page-85tobe-dark-background: #1a1a2e; /* Nền tối */
      --page-85tobe-darker-background: #16213e; /* Nền tối hơn */
      --page-85tobe-text-color: #e0e0e0; /* Trắng xám */
      --page-85tobe-heading-color: #ffffff; /* Trắng */
      --page-85tobe-border-color: #2c3e50; /* Xám đậm */
      --page-85tobe-accent-color: #e74c3c; /* Đỏ cam */
    }

    .page-85tobe {
      font-family: 'Arial', sans-serif;
      color: var(--page-85tobe-text-color);
      background-color: var(--page-85tobe-dark-background);
      line-height: 1.6;
      padding-top: 10px; /* Small top padding, assuming body padding handles header offset */
    }

    .page-85tobe__section-title {
      font-size: 2.5em;
      color: var(--page-85tobe-heading-color);
      text-align: center;
      margin-bottom: 20px;
      padding: 0 15px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .page-85tobe__section-subtitle {
      font-size: 1.1em;
      color: var(--page-85tobe-text-color);
      text-align: center;
      margin-bottom: 40px;
      padding: 0 15px;
    }

    .page-85tobe__button {
      display: inline-block;
      padding: 12px 25px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
      cursor: pointer;
      border: none;
      font-size: 1em;
      box-sizing: border-box; /* Ensure padding is included in width */
    }

    .page-85tobe__button--primary {
      background-color: var(--page-85tobe-primary-color);
      color: var(--page-85tobe-dark-background);
    }

    .page-85tobe__button--primary:hover {
      background-color: #ffc107; /* Slightly brighter yellow */
      transform: translateY(-2px);
    }

    .page-85tobe__button--secondary {
      background-color: var(--page-85tobe-darker-background);
      color: var(--page-85tobe-primary-color);
      border: 1px solid var(--page-85tobe-primary-color);
    }

    .page-85tobe__button--secondary:hover {
      background-color: var(--page-85tobe-primary-color);
      color: var(--page-85tobe-dark-background);
      transform: translateY(-2px);
    }

    .page-85tobe__button--small {
      padding: 8px 18px;
      font-size: 0.9em;
      border-radius: 5px;
    }

    /* Hero Section */
    .page-85tobe__hero-section {
      position: relative;
      width: 100%;
      height: 60vh; /* Adjust for mobile-first, then larger for desktop */
      min-height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      margin-bottom: 40px;
    }

    .page-85tobe__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
    }

    .page-85tobe__hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.7);
      z-index: 2;
    }

    .page-85tobe__hero-content {
      position: relative;
      z-index: 3;
      max-width: 900px;
      padding: 20px;
    }

    .page-85tobe__hero-title {
      font-size: 2.8em;
      color: var(--page-85tobe-heading-color);
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-85tobe__hero-description {
      font-size: 1.2em;
      color: var(--page-85tobe-text-color);
      margin-bottom: 30px;
    }

    .page-85tobe__hero-buttons {
      display: flex;
      gap: 15px;
      justify-content: center;
      flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
    }

    /* Sections */
    .page-85tobe__features-section,
    .page-85tobe__promo-section,
    .page-85tobe__why-choose-section,
    .page-85tobe__guide-section,
    .page-85tobe__faq-section {
      padding: 60px 20px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-85tobe__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      justify-items: center;
    }

    .page-85tobe__feature-item {
      background-color: var(--page-85tobe-darker-background);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease;
      border: 1px solid var(--page-85tobe-border-color);
      box-sizing: border-box; /* Important for responsive lists */
      width: 100%; /* Default to 100% for mobile-first */
      max-width: 350px; /* Max width for items in grid */
    }

    .page-85tobe__feature-item:hover {
      transform: translateY(-5px);
    }

    .page-85tobe__feature-image {
      width: 100%;
      max-width: 250px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 15px;
      object-fit: cover;
    }

    .page-85tobe__feature-title {
      font-size: 1.6em;
      color: var(--page-85tobe-primary-color);
      margin-bottom: 10px;
    }

    .page-85tobe__feature-description {
      font-size: 0.95em;
      color: var(--page-85tobe-text-color);
    }

    /* Promo Section */
    .page-85tobe__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      justify-items: center;
    }

    .page-85tobe__promo-card {
      background-color: var(--page-85tobe-darker-background);
      border-radius: 10px;
      padding: 20px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease;
      border: 1px solid var(--page-85tobe-border-color);
      text-align: center;
      box-sizing: border-box; /* Important for responsive lists */
      width: 100%; /* Default to 100% for mobile-first */
      max-width: 400px;
    }

    .page-85tobe__promo-card:hover {
      transform: translateY(-5px);
    }

    .page-85tobe__promo-image {
      width: 100%;
      max-width: 300px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 15px;
      object-fit: cover;
    }

    .page-85tobe__promo-title {
      font-size: 1.4em;
      color: var(--page-85tobe-primary-color);
      margin-bottom: 10px;
    }

    .page-85tobe__promo-description {
      font-size: 0.9em;
      color: var(--page-85tobe-text-color);
      margin-bottom: 20px;
    }

    /* Why Choose Section */
    .page-85tobe__why-choose-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      justify-items: center;
    }

    .page-85tobe__why-choose-item {
      background-color: var(--page-85tobe-darker-background);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-85tobe-border-color);
      box-sizing: border-box; /* Important for responsive lists */
      width: 100%; /* Default to 100% for mobile-first */
      max-width: 350px;
    }

    .page-85tobe__why-choose-icon {
      width: 100%;
      max-width: 200px; /* Minimum 200x200px */
      height: auto;
      margin-bottom: 15px;
      object-fit: contain;
    }

    .page-85tobe__why-choose-title {
      font-size: 1.5em;
      color: var(--page-85tobe-primary-color);
      margin-bottom: 10px;
    }

    .page-85tobe__why-choose-description {
      font-size: 0.95em;
      color: var(--page-85tobe-text-color);
    }

    /* Guide Section */
    .page-85tobe__guide-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-bottom: 40px;
      justify-items: center;
    }

    .page-85tobe__guide-step {
      background-color: var(--page-85tobe-darker-background);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-85tobe-border-color);
      position: relative;
      box-sizing: border-box; /* Important for responsive lists */
      width: 100%; /* Default to 100% for mobile-first */
      max-width: 380px;
    }

    .page-85tobe__guide-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--page-85tobe-primary-color);
      color: var(--page-85tobe-dark-background);
      font-size: 1.8em;
      font-weight: bold;
      margin-bottom: 15px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-85tobe__guide-title {
      font-size: 1.5em;
      color: var(--page-85tobe-heading-color);
      margin-bottom: 10px;
    }

    .page-85tobe__guide-description {
      font-size: 0.95em;
      color: var(--page-85tobe-text-color);
    }

    .page-85tobe__cta-button-wrapper {
      text-align: center;
    }

    /* FAQ Section */
    .page-85tobe__faq-container {
      max-width: 800px;
      margin: 0 auto;
    }

    .page-85tobe__faq-item {
      background-color: var(--page-85tobe-darker-background);
      border: 1px solid var(--page-85tobe-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      box-sizing: border-box; /* Important for responsive lists */
      width: 100%; /* Default to 100% for mobile-first */
    }

    .page-85tobe__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #2a3a5b; /* Slightly different background for question */
      color: var(--page-85tobe-heading-color);
      transition: background-color 0.3s ease;
    }

    .page-85tobe__faq-question:hover {
      background-color: #3e5077;
    }

    .page-85tobe__faq-question-title {
      margin: 0;
      font-size: 1.2em;
      color: inherit;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-85tobe__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-85tobe-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent span from blocking click event */
    }

    .page-85tobe__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: var(--page-85tobe-text-color);
    }

    .page-85tobe__faq-answer p {
      padding-bottom: 20px; /* Add padding to bottom of paragraph inside answer */
      margin: 0;
    }

    .page-85tobe__faq-item.active .page-85tobe__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important; /* Ensure padding is applied */
      opacity: 1;
    }

    .page-85tobe__faq-item.active .page-85tobe__faq-toggle {
      transform: rotate(45deg); /* Visually change + to X */
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-85tobe__hero-title {
        font-size: 2.5em;
      }
      .page-85tobe__section-title {
        font-size: 2em;
      }
      .page-85tobe__features-grid,
      .page-85tobe__promo-grid,
      .page-85tobe__why-choose-grid,
      .page-85tobe__guide-steps {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-85tobe__hero-section {
        height: 70vh;
        min-height: 350px;
      }
      .page-85tobe__hero-title {
        font-size: 2em;
      }
      .page-85tobe__hero-description {
        font-size: 1em;
      }
      .page-85tobe__hero-buttons {
        flex-direction: column;
        gap: 10px;
      }
      .page-85tobe__button {
        width: 80%;
        max-width: 300px;
        margin: 0 auto;
      }

      .page-85tobe__section-title {
        font-size: 1.8em;
      }
      .page-85tobe__section-subtitle {
        font-size: 1em;
      }

      /* List items responsive rules */
      .page-85tobe__feature-item,
      .page-85tobe__promo-card,
      .page-85tobe__why-choose-item,
      .page-85tobe__guide-step,
      .page-85tobe__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important; /* Adjust padding for mobile */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-85tobe__features-grid,
      .page-85tobe__promo-grid,
      .page-85tobe__why-choose-grid,
      .page-85tobe__guide-steps {
        grid-template-columns: 1fr; /* Single column layout */
        padding: 0 10px !important; /* Adjust container padding */
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      /* Image responsive rules */
      .page-85tobe__feature-image,
      .page-85tobe__promo-image,
      .page-85tobe__why-choose-icon {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-85tobe__faq-question {
        padding: 12px 15px;
      }
      .page-85tobe__faq-question-title {
        font-size: 1.1em;
      }
      .page-85tobe__faq-answer {
        padding: 0 15px;
      }
      .page-85tobe__faq-item.active .page-85tobe__faq-answer {
        padding: 15px !important;
      }
    }

    @media (max-width: 480px) {
      .page-85tobe__hero-title {
        font-size: 1.8em;
      }
      .page-85tobe__hero-description {
        font-size: 0.9em;
      }
      .page-85tobe__section-title {
        font-size: 1.5em;
      }
      .page-85tobe__section-subtitle {
        font-size: 0.9em;
      }
      .page-85tobe__feature-title,
      .page-85tobe__promo-title,
      .page-85tobe__why-choose-title,
      .page-85tobe__guide-title {
        font-size: 1.3em;
      }
    }