:root {
      --primary-color: #e44d26; /* Cam đỏ */
      --secondary-color: #333; /* Xám đậm */
      --accent-color: #f7b731; /* Vàng */
      --text-color: #333;
      --light-text-color: #666;
      --background-light: #f9f9f9;
      --background-dark: #eee;
      --border-color: #ddd;
      --button-bg: var(--primary-color);
      --button-text: #fff;
      --max-width: 1200px;
      --spacing-unit: 20px;
      --header-offset: 122px; /* Default value, to be overridden by shared.css if present */
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--text-color);
      background-color: #fff;
      margin: 0;
      padding-top: var(--header-offset); /* Ensure content is below fixed header */
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .page-90ok-nh-c-i {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: var(--spacing-unit);
    }

    /* Hero Section */
    .page-90ok-nh-c-i__hero-section {
      background-image: url('[GALLERY:hero:1920x1080:gaming,casino,90ok]');
      background-size: cover;
      background-position: center;
      color: #fff;
      text-align: center;
      padding: 80px var(--spacing-unit) 80px; /* Adjusted padding-top as body has offset */
      position: relative;
      margin-bottom: var(--spacing-unit);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 400px;
    }

    .page-90ok-nh-c-i__hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.6);
      z-index: 1;
    }

    .page-90ok-nh-c-i__hero-content {
      position: relative;
      z-index: 2;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-90ok-nh-c-i__hero-title {
      font-size: 3.2em;
      margin-bottom: 15px;
      font-weight: 700;
      color: var(--accent-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-90ok-nh-c-i__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 30px;
      line-height: 1.5;
      color: #f0f0f0;
    }

    .page-90ok-nh-c-i__cta-button {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--button-text);
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-90ok-nh-c-i__cta-button:hover {
      background-color: #c73d1a;
      transform: translateY(-2px);
    }

    /* General Section Styling */
    .page-90ok-nh-c-i__section {
      background-color: #fff;
      padding: var(--spacing-unit) 0;
      margin-bottom: var(--spacing-unit);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .page-90ok-nh-c-i__section-alt {
      background-color: var(--background-light);
      padding: var(--spacing-unit) 0;
      margin-bottom: var(--spacing-unit);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    }

    .page-90ok-nh-c-i__section-title {
      text-align: center;
      font-size: 2.5em;
      color: var(--primary-color);
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-90ok-nh-c-i__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--accent-color);
      border-radius: 2px;
    }

    .page-90ok-nh-c-i__container {
      max-width: 100%;
      padding: 0 var(--spacing-unit);
      margin: 0 auto;
      box-sizing: border-box;
    }

    /* Text Content */
    .page-90ok-nh-c-i__text-block p {
      margin-bottom: 15px;
      font-size: 1.1em;
      line-height: 1.7;
    }

    .page-90ok-nh-c-i__text-block strong {
      color: var(--primary-color);
    }

    /* Feature Grid */
    .page-90ok-nh-c-i__feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: var(--spacing-unit);
      margin-top: 40px;
    }

    .page-90ok-nh-c-i__feature-item {
      background-color: #fff;
      padding: var(--spacing-unit);
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--border-color);
    }

    .page-90ok-nh-c-i__feature-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    }

    .page-90ok-nh-c-i__feature-icon {
      margin-bottom: 15px;
      width: 100%;
      max-width: 250px;
      height: auto;
      border-radius: 8px;
      object-fit: cover;
    }

    .page-90ok-nh-c-i__feature-item h3 {
      font-size: 1.5em;
      color: var(--primary-color);
      margin-bottom: 10px;
    }

    .page-90ok-nh-c-i__feature-item p {
      font-size: 1em;
      color: var(--light-text-color);
    }

    /* Game Categories */
    .page-90ok-nh-c-i__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--spacing-unit);
      margin-top: 40px;
    }

    .page-90ok-nh-c-i__game-card {
      background-color: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--border-color);
    }

    .page-90ok-nh-c-i__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .page-90ok-nh-c-i__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-90ok-nh-c-i__game-content {
      padding: var(--spacing-unit);
    }

    .page-90ok-nh-c-i__game-content h3 {
      font-size: 1.4em;
      color: var(--primary-color);
      margin-bottom: 10px;
    }

    .page-90ok-nh-c-i__game-content p {
      font-size: 0.95em;
      color: var(--light-text-color);
      margin-bottom: 15px;
    }

    /* Promotion Banner */
    .page-90ok-nh-c-i__promo-banner {
      background-image: url('[GALLERY:banner:1920x400:bonus,promotion,188k,90ok]');
      background-size: cover;
      background-position: center;
      color: #fff;
      text-align: center;
      padding: 60px var(--spacing-unit);
      border-radius: 8px;
      margin-bottom: var(--spacing-unit);
      position: relative;
      overflow: hidden;
    }

    .page-90ok-nh-c-i__promo-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.65);
      z-index: 1;
    }

    .page-90ok-nh-c-i__promo-content {
      position: relative;
      z-index: 2;
    }

    .page-90ok-nh-c-i__promo-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--accent-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-90ok-nh-c-i__promo-text {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #f0f0f0;
    }

    /* How To Section */
    .page-90ok-nh-c-i__steps-list {
      display: flex;
      flex-wrap: wrap;
      gap: var(--spacing-unit);
      justify-content: center;
      margin-top: 40px;
      list-style: none;
      padding: 0;
    }

    .page-90ok-nh-c-i__step-item {
      background-color: #fff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: var(--spacing-unit);
      text-align: center;
      flex: 1 1 calc(33% - var(--spacing-unit));
      max-width: calc(33% - var(--spacing-unit));
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Crucial for responsive lists */
    }

    .page-90ok-nh-c-i__step-item:hover {
      transform: translateY(-5px);
    }

    .page-90ok-nh-c-i__step-number {
      font-size: 2.5em;
      font-weight: bold;
      color: var(--accent-color);
      margin-bottom: 10px;
    }

    .page-90ok-nh-c-i__step-title {
      font-size: 1.4em;
      color: var(--primary-color);
      margin-bottom: 10px;
    }

    .page-90ok-nh-c-i__step-description {
      font-size: 1em;
      color: var(--light-text-color);
    }

    /* FAQ Section */
    .page-90ok-nh-c-i__faq-section {
      padding: var(--spacing-unit) 0;
      margin-bottom: var(--spacing-unit);
    }

    .page-90ok-nh-c-i__faq-item {
      background-color: #fff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }

    .page-90ok-nh-c-i__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--background-dark);
      cursor: pointer;
      user-select: none;
      font-size: 1.2em;
      font-weight: bold;
      color: var(--secondary-color);
      transition: background-color 0.3s ease;
    }

    .page-90ok-nh-c-i__faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-90ok-nh-c-i__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click */
      flex-grow: 1;
      text-align: left;
    }

    .page-90ok-nh-c-i__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--primary-color);
      margin-left: 15px;
      pointer-events: none; /* Prevent span from blocking click */
      transition: transform 0.3s ease;
    }

    .page-90ok-nh-c-i__faq-item.active .page-90ok-nh-c-i__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }
    .page-90ok-nh-c-i__faq-toggle::before {
      content: "+";
    }
    .page-90ok-nh-c-i__faq-item.active .page-90ok-nh-c-i__faq-toggle::before {
      content: "−"; /* Change + to - */
    }

    .page-90ok-nh-c-i__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(--light-text-color);
      font-size: 1em;
    }

    .page-90ok-nh-c-i__faq-item.active .page-90ok-nh-c-i__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px !important;
      opacity: 1;
    }

    .page-90ok-nh-c-i__faq-answer p {
      margin: 0 0 10px 0;
    }

    /* Call to Action Bar */
    .page-90ok-nh-c-i__cta-bar {
      background-color: var(--secondary-color);
      color: #fff;
      text-align: center;
      padding: 40px var(--spacing-unit);
      border-radius: 8px;
      margin-top: var(--spacing-unit);
    }

    .page-90ok-nh-c-i__cta-bar-title {
      font-size: 2.2em;
      margin-bottom: 15px;
      color: var(--accent-color);
    }

    .page-90ok-nh-c-i__cta-bar-text {
      font-size: 1.2em;
      margin-bottom: 30px;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-90ok-nh-c-i__hero-title {
        font-size: 2.8em;
      }
      .page-90ok-nh-c-i__section-title {
        font-size: 2em;
      }
      .page-90ok-nh-c-i__game-card {
        flex-basis: calc(50% - var(--spacing-unit));
        max-width: calc(50% - var(--spacing-unit));
      }
      .page-90ok-nh-c-i__step-item {
        flex: 1 1 calc(50% - var(--spacing-unit));
        max-width: calc(50% - var(--spacing-unit));
      }
    }

    @media (max-width: 768px) {
      .page-90ok-nh-c-i {
        padding: var(--spacing-unit) 15px;
      }
      .page-90ok-nh-c-i__hero-section {
        padding: 60px 15px;
        min-height: 300px;
      }
      .page-90ok-nh-c-i__hero-title {
        font-size: 2.2em;
      }
      .page-90ok-nh-c-i__hero-subtitle {
        font-size: 1.1em;
      }
      .page-90ok-nh-c-i__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }
      .page-90ok-nh-c-i__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      /* List item responsive adjustments */
      .page-90ok-nh-c-i__feature-grid,
      .page-90ok-nh-c-i__game-categories,
      .page-90ok-nh-c-i__steps-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-unit);
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-90ok-nh-c-i__feature-item,
      .page-90ok-nh-c-i__game-card,
      .page-90ok-nh-c-i__step-item {
        flex: 1 1 100%;
        max-width: 100% !important;
        width: 100% !important;
        padding: 20px !important; /* Adjust padding if needed to fit */
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-90ok-nh-c-i__promo-title {
        font-size: 2em;
      }
      .page-90ok-nh-c-i__promo-text {
        font-size: 1em;
      }
      .page-90ok-nh-c-i__cta-bar-title {
        font-size: 1.8em;
      }
      .page-90ok-nh-c-i__cta-bar-text {
        font-size: 1em;
      }
      .page-90ok-nh-c-i__faq-question {
        font-size: 1.1em;
        padding: 12px 15px;
      }
      .page-90ok-nh-c-i__faq-question h3 {
        font-size: 1.1em;
      }
      .page-90ok-nh-c-i__faq-answer {
        padding: 15px !important; /* Adjust padding for mobile */
      }
      .page-90ok-nh-c-i__game-image {
        height: 180px;
      }
    }

    @media (max-width: 480px) {
      .page-90ok-nh-c-i__hero-title {
        font-size: 1.8em;
      }
      .page-90ok-nh-c-i__hero-subtitle {
        font-size: 0.9em;
      }
      .page-90ok-nh-c-i__section-title {
        font-size: 1.5em;
      }
      .page-90ok-nh-c-i__promo-title {
        font-size: 1.6em;
      }
      .page-90ok-nh-c-i__promo-text {
        font-size: 0.9em;
      }
      .page-90ok-nh-c-i__cta-bar-title {
        font-size: 1.5em;
      }
      .page-90ok-nh-c-i__cta-bar-text {
        font-size: 0.9em;
      }
      .page-90ok-nh-c-i__feature-item h3,
      .page-90ok-nh-c-i__game-content h3,
      .page-90ok-nh-c-i__step-title {
        font-size: 1.2em;
      }
      .page-90ok-nh-c-i__faq-question {
        font-size: 1em;
      }
      .page-90ok-nh-c-i__faq-question h3 {
        font-size: 1em;
      }
      .page-90ok-nh-c-i__faq-toggle {
        font-size: 1.3em;
      }
    }