:root {
      --page-f168dangnhap__primary-color: #FFD700; /* Gold/Yellow */
      --page-f168dangnhap__secondary-color: #FFFFFF; /* White */
      --page-f168dangnhap__background-color: #000000; /* Black */
      --page-f168dangnhap__dark-grey: #1a1a1a;
      --page-f168dangnhap__light-grey: #333333;
    }

    .page-f168dangnhap {
      background-color: var(--page-f168dangnhap__background-color);
      color: var(--page-f168dangnhap__secondary-color);
      font-family: Arial, sans-serif;
      line-height: 1.6;
      padding-bottom: 80px; /* Space for fixed login button */
    }

    .page-f168dangnhap__section {
      padding: 40px 20px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-f168dangnhap__hero-section {
      padding-top: 140px; /* Space for fixed header */
      text-align: center;
      background-color: var(--page-f168dangnhap__dark-grey);
      position: relative;
    }

    .page-f168dangnhap__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
      object-fit: cover;
    }

    .page-f168dangnhap__hero-content {
      padding: 30px 20px;
      position: relative;
      z-index: 2;
    }

    .page-f168dangnhap__hero-title {
      color: var(--page-f168dangnhap__primary-color);
      font-size: 2.5em;
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .page-f168dangnhap__hero-description {
      font-size: 1.1em;
      margin-bottom: 30px;
      color: var(--page-f168dangnhap__secondary-color);
    }

    .page-f168dangnhap__button {
      display: inline-block;
      background-color: var(--page-f168dangnhap__primary-color);
      color: var(--page-f168dangnhap__background-color);
      padding: 15px 30px;
      border-radius: 50px;
      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-f168dangnhap__button:hover {
      background-color: #E6B800;
      transform: translateY(-2px);
    }

    .page-f168dangnhap__section-title {
      color: var(--page-f168dangnhap__primary-color);
      text-align: center;
      font-size: 2em;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-f168dangnhap__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 3px;
      background-color: var(--page-f168dangnhap__primary-color);
      border-radius: 2px;
    }

    .page-f168dangnhap__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-f168dangnhap__card {
      background-color: var(--page-f168dangnhap__dark-grey);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding-bottom: 20px;
    }

    .page-f168dangnhap__card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
    }

    .page-f168dangnhap__card-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      display: block;
      border-bottom: 2px solid var(--page-f168dangnhap__primary-color);
    }
    
    .page-f168dangnhap__card-image--gamelogo {
        height: 120px; /* Smaller height for game logos */
        object-fit: contain; /* Contain for logos */
        padding: 15px;
        background-color: #0d0d0d;
        border-bottom: none;
    }

    .page-f168dangnhap__card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      width: 100%;
    }

    .page-f168dangnhap__card-title {
      color: var(--page-f168dangnhap__primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-f168dangnhap__card-text {
      color: var(--page-f168dangnhap__secondary-color);
      font-size: 0.95em;
      margin-bottom: 15px;
    }

    .page-f168dangnhap__card-link {
      color: var(--page-f168dangnhap__primary-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
      display: block;
      margin-top: auto; /* Push link to bottom */
    }

    .page-f168dangnhap__card-link:hover {
      color: var(--page-f168dangnhap__secondary-color);
    }

    .page-f168dangnhap__steps-list {
      list-style: none;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .page-f168dangnhap__step-item {
      background-color: var(--page-f168dangnhap__dark-grey);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      border-top: 4px solid var(--page-f168dangnhap__primary-color);
    }

    .page-f168dangnhap__step-number {
      display: inline-block;
      background-color: var(--page-f168dangnhap__primary-color);
      color: var(--page-f168dangnhap__background-color);
      width: 50px;
      height: 50px;
      line-height: 50px;
      border-radius: 50%;
      font-size: 1.5em;
      font-weight: bold;
      margin-bottom: 15px;
    }

    .page-f168dangnhap__step-title {
      color: var(--page-f168dangnhap__primary-color);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-f168dangnhap__step-description {
      color: var(--page-f168dangnhap__secondary-color);
      font-size: 1em;
    }

    .page-f168dangnhap__faq-section {
      background-color: var(--page-f168dangnhap__dark-grey);
      border-radius: 10px;
      padding: 30px;
      margin-top: 40px;
    }

    .page-f168dangnhap__faq-item {
      border-bottom: 1px solid var(--page-f168dangnhap__light-grey);
      margin-bottom: 10px;
      padding-bottom: 10px;
    }

    .page-f168dangnhap__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }

    .page-f168dangnhap__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      padding: 15px 0;
      color: var(--page-f168dangnhap__secondary-color);
      font-size: 1.1em;
      font-weight: bold;
      user-select: none;
      transition: color 0.3s ease;
    }

    .page-f168dangnhap__faq-question:hover {
      color: var(--page-f168dangnhap__primary-color);
    }
    
    .page-f168dangnhap__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        font-weight: bold;
        color: inherit; /* Inherit color from parent for hover effect */
        pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-f168dangnhap__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-f168dangnhap__primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click event */
    }

    .page-f168dangnhap__faq-item.active .page-f168dangnhap__faq-toggle {
      transform: rotate(45deg);
    }

    .page-f168dangnhap__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      color: var(--page-f168dangnhap__secondary-color);
      font-size: 0.95em;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-f168dangnhap__faq-item.active .page-f168dangnhap__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-f168dangnhap__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      width: calc(100% - 40px);
      max-width: 400px;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
      animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
      0% { transform: translateX(-50%) scale(1); }
      50% { transform: translateX(-50%) scale(1.03); }
      100% { transform: translateX(-50%) scale(1); }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-f168dangnhap__hero-section {
        padding-top: 100px; /* Adjusted for mobile fixed header */
      }

      .page-f168dangnhap__hero-title {
        font-size: 1.8em;
      }

      .page-f168dangnhap__hero-description {
        font-size: 1em;
      }

      .page-f168dangnhap__section {
        padding: 30px 15px;
      }

      .page-f168dangnhap__section-title {
        font-size: 1.7em;
      }

      .page-f168dangnhap__grid {
        grid-template-columns: 1fr;
      }

      .page-f168dangnhap__card-image {
        height: 180px;
      }
      
      .page-f168dangnhap__card-image--gamelogo {
        height: 100px;
      }

      .page-f168dangnhap__card-title {
        font-size: 1.2em;
      }

      .page-f168dangnhap__card-text {
        font-size: 0.9em;
      }

      .page-f168dangnhap__step-title {
        font-size: 1.2em;
      }
      
      .page-f168dangnhap__faq-question {
        font-size: 1em;
      }
      
      .page-f168dangnhap__faq-question h3 {
        font-size: 1em;
      }

      .page-f168dangnhap__faq-answer {
        font-size: 0.9em;
      }
      
      /* Image responsive optimization for mobile */
      .page-f168dangnhap img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-f168dangnhap__card-image,
      .page-f168dangnhap__hero-image,
      .page-f168dangnhap__card-image--gamelogo {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }