:root {
      --page-hi88-primary-color: #e44d26; /* Cam đỏ */
      --page-hi88-secondary-color: #333; /* Xám đậm */
      --page-hi88-accent-color: #f7b32b; /* Vàng */
      --page-hi88-text-color: #333; /* Màu chữ chính */
      --page-hi88-light-text-color: #fff; /* Màu chữ sáng */
      --page-hi88-background-color: #f5f5f5; /* Nền sáng */
      --page-hi88-dark-background-color: #222; /* Nền tối */
      --page-hi88-card-background: #fff; /* Nền thẻ */
      --page-hi88-border-color: #eee; /* Màu viền */
      --page-hi88-hover-color: #c23d1d; /* Màu hover */
    }

    .page-hi88 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-hi88-text-color);
      background-color: var(--page-hi88-background-color);
    }

    .page-hi88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-hi88__hero-section {
      text-align: center;
      color: var(--page-hi88-light-text-color);
      padding: 10px 0 60px 0; /* Adjusted padding-top for fixed header */
      position: relative;
      overflow: hidden;
      background-color: var(--page-hi88-dark-background-color);
      margin-bottom: 40px;
    }

    .page-hi88__hero-image {
      width: 100%;
      height: auto;
      max-width: 1920px;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-hi88__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
      margin-top: 20px;
    }

    .page-hi88__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-hi88-accent-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-hi88__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 30px;
      color: var(--page-hi88-light-text-color);
    }

    .page-hi88__cta-button {
      display: inline-block;
      background-color: var(--page-hi88-primary-color);
      color: var(--page-hi88-light-text-color);
      padding: 15px 30px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-hi88__cta-button:hover {
      background-color: var(--page-hi88-hover-color);
      transform: translateY(-2px);
    }

    .page-hi88__section {
      background-color: var(--page-hi88-card-background);
      padding: 40px 20px;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-hi88__section-title {
      font-size: 2.2em;
      color: var(--page-hi88-primary-color);
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-hi88__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-hi88-accent-color);
      border-radius: 2px;
    }

    .page-hi88__text-content {
      font-size: 1.1em;
      margin-bottom: 20px;
      color: var(--page-hi88-secondary-color);
    }

    .page-hi88__feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-hi88__feature-card {
      background-color: var(--page-hi88-background-color);
      padding: 25px;
      border-radius: 8px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-hi88__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    }

    .page-hi88__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      display: inline-block;
      max-width: 100%;
      border-radius: 50%;
      object-fit: cover;
      border: 3px solid var(--page-hi88-accent-color);
    }

    .page-hi88__feature-title {
      font-size: 1.4em;
      color: var(--page-hi88-primary-color);
      margin-bottom: 10px;
    }

    .page-hi88__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-hi88__game-card {
      background-color: var(--page-hi88-dark-background-color);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-decoration: none;
      color: inherit;
    }

    .page-hi88__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    }

    .page-hi88__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
    }

    .page-hi88__game-content {
      padding: 20px;
      text-align: center;
    }

    .page-hi88__game-title {
      font-size: 1.5em;
      color: var(--page-hi88-accent-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-hi88__game-description {
      color: var(--page-hi88-light-text-color);
      font-size: 0.95em;
      margin-bottom: 15px;
    }

    .page-hi88__game-button {
      display: inline-block;
      background-color: var(--page-hi88-primary-color);
      color: var(--page-hi88-light-text-color);
      padding: 10px 20px;
      border-radius: 20px;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.9em;
      transition: background-color 0.3s ease;
    }

    .page-hi88__game-button:hover {
      background-color: var(--page-hi88-hover-color);
    }

    .page-hi88__promo-banner {
      background: linear-gradient(135deg, var(--page-hi88-primary-color) 0%, var(--page-hi88-accent-color) 100%);
      color: var(--page-hi88-light-text-color);
      padding: 50px 20px;
      text-align: center;
      border-radius: 8px;
      margin-bottom: 30px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-hi88__promo-title {
      font-size: 2.5em;
      margin-bottom: 15px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    }

    .page-hi88__promo-text {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-hi88__promo-button {
      background-color: var(--page-hi88-dark-background-color);
      color: var(--page-hi88-accent-color);
      padding: 18px 40px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-hi88__promo-button:hover {
      background-color: var(--page-hi88-secondary-color);
      transform: translateY(-2px);
    }

    .page-hi88__steps-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .page-hi88__step-item {
      background-color: var(--page-hi88-card-background);
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      display: flex;
      align-items: flex-start;
      gap: 15px;
    }

    .page-hi88__step-number {
      background-color: var(--page-hi88-primary-color);
      color: var(--page-hi88-light-text-color);
      width: 40px;
      height: 40px;
      min-width: 40px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 1.4em;
      font-weight: bold;
    }

    .page-hi88__step-content h3 {
      font-size: 1.3em;
      color: var(--page-hi88-primary-color);
      margin-top: 0;
      margin-bottom: 10px;
    }

    .page-hi88__step-content p {
      font-size: 1em;
      color: var(--page-hi88-secondary-color);
    }

    .page-hi88__faq-section {
      background-color: var(--page-hi88-dark-background-color);
      color: var(--page-hi88-light-text-color);
      padding: 40px 20px;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-hi88__faq-section .page-hi88__section-title {
      color: var(--page-hi88-accent-color);
    }

    .page-hi88__faq-list {
      max-width: 900px;
      margin: 30px auto 0 auto;
    }

    .page-hi88__faq-item {
      margin-bottom: 15px;
      border: 1px solid var(--page-hi88-secondary-color);
      border-radius: 8px;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .page-hi88__faq-item.active {
      border-color: var(--page-hi88-primary-color);
    }

    .page-hi88__faq-question {
      background-color: var(--page-hi88-secondary-color);
      padding: 18px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.15em;
      font-weight: bold;
      color: var(--page-hi88-light-text-color);
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-hi88__faq-question:hover {
      background-color: #444;
    }

    .page-hi88__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      color: var(--page-hi88-light-text-color);
      pointer-events: none; /* Prevent h3 from blocking click */
      flex-grow: 1;
    }

    .page-hi88__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
      color: var(--page-hi88-accent-color);
    }

    .page-hi88__faq-item.active .page-hi88__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
      color: var(--page-hi88-primary-color);
    }

    .page-hi88__faq-answer {
      background-color: #3a3a3a;
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      font-size: 1em;
      color: #ccc;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-hi88__faq-item.active .page-hi88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px !important;
      opacity: 1;
    }

    .page-hi88__floating-login {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      background: linear-gradient(90deg, var(--page-hi88-primary-color), var(--page-hi88-accent-color));
      color: var(--page-hi88-light-text-color);
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      animation: page-hi88-pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-hi88__floating-login:hover {
      opacity: 0.9;
      animation: none;
    }

    .page-hi88__floating-login-icon {
        width: 24px;
        height: 24px;
        max-width: 100%;
        height: auto;
        display: block;
        filter: brightness(0) invert(1); /* Makes icon white */
    }

    @keyframes page-hi88-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-hi88__hero-title {
        font-size: 2em;
      }
      .page-hi88__hero-subtitle {
        font-size: 1.1em;
      }
      .page-hi88__section-title {
        font-size: 1.8em;
      }
      .page-hi88__text-content {
        font-size: 1em;
      }
      .page-hi88__feature-grid,
      .page-hi88__game-categories {
        grid-template-columns: 1fr;
      }
      .page-hi88__promo-title {
        font-size: 2em;
      }
      .page-hi88__promo-text {
        font-size: 1em;
      }
      .page-hi88__promo-button {
        padding: 15px 30px;
        font-size: 1em;
      }
      .page-hi88__floating-login {
        bottom: 15px;
        right: 15px;
        padding: 10px 20px;
        font-size: 1em;
      }
      .page-hi88__game-image {
        height: 180px;
      }
      .page-hi88__faq-question {
        font-size: 1em;
        padding: 15px;
      }
      .page-hi88__faq-question h3 {
        font-size: 1em;
      }
      .page-hi88__faq-answer {
        padding: 15px !important;
      }
      .page-hi88__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .page-hi88__step-content h3 {
        margin-top: 15px;
      }
    }

    /* Image responsive optimization */
    .page-hi88 img {
      max-width: 100% !important;
      height: auto !important;
      box-sizing: border-box !important;
    }
    .page-hi88__game-card img,
    .page-hi88__feature-card img {
      width: 100% !important;
      max-width: 100% !important;
      height: auto !important;
      object-fit: cover !important;
      box-sizing: border-box !important;
    }
    .page-hi88__hero-section img {
      width: 100% !important;
      max-width: 100% !important;
      height: auto !important;
      object-fit: cover !important;
      box-sizing: border-box !important;
    }