/* Tổng quan và thiết lập cơ bản */
    .page-77winapk {
      font-family: 'Arial', sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f4f7f6;
      overflow-x: hidden; /* Ngăn chặn tràn ngang */
    }

    .page-77winapk__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-77winapk__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-77winapk__section--alt {
      background-color: #e9ecef;
    }

    .page-77winapk__title {
      font-size: 3em;
      color: #0056b3;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .page-77winapk__subtitle {
      font-size: 1.8em;
      color: #007bff;
      margin-bottom: 30px;
    }

    .page-77winapk__text {
      font-size: 1.1em;
      margin-bottom: 20px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-77winapk__button {
      display: inline-block;
      background-color: #ffc107; /* Vàng nổi bật */
      color: #343a40; /* Chữ đen đậm */
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    .page-77winapk__button:hover {
      background-color: #e0a800;
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-77winapk__hero-section {
      position: relative;
      background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('[GALLERY:banner:77win_apk,hero,banner]') no-repeat center center/cover;
      color: #fff;
      padding: 90px 0 80px; /* Adjusted padding-top for fixed header */
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 500px;
    }

    .page-77winapk__hero-content {
      z-index: 1;
      max-width: 900px;
    }

    .page-77winapk__hero-title {
      font-size: 3.5em;
      margin-bottom: 20px;
      line-height: 1.2;
      color: #ffc107; /* Vàng nổi bật */
    }

    .page-77winapk__hero-description {
      font-size: 1.5em;
      margin-bottom: 40px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Floating Login Button */
    .page-77winapk__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Đỏ nổi bật */
      color: #fff;
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-77winapk__pulse 2s infinite;
    }

    .page-77winapk__floating-button:hover {
      background-color: #c82333;
      transform: scale(1.05);
    }

    @keyframes page-77winapk__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.03); }
      100% { transform: scale(1); }
    }

    /* Features Section */
    .page-77winapk__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-77winapk__feature-item {
      background-color: #fff;
      padding: 30px;
      border-radius: 15px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      text-align: left;
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Ensure padding is included in width calculation */
    }

    .page-77winapk__feature-item:hover {
      transform: translateY(-5px);
    }

    .page-77winapk__feature-icon {
      width: 80px; /* Base size */
      height: 80px; /* Base size */
      margin-bottom: 20px;
      display: block; /* Ensure image takes full width of its container */
      max-width: 100%;
      height: auto;
      border-radius: 8px; /* Slightly rounded corners for icons */
    }

    .page-77winapk__feature-title {
      font-size: 1.5em;
      color: #0056b3;
      margin-bottom: 15px;
    }

    .page-77winapk__feature-description {
      font-size: 1em;
      color: #555;
    }

    /* How-to Guide Section */
    .page-77winapk__steps-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px;
      margin-top: 40px;
      list-style: none;
      padding: 0;
    }

    .page-77winapk__step-item {
      background-color: #fff;
      padding: 30px;
      border-radius: 15px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      text-align: center;
      flex: 1 1 calc(33% - 30px); /* 3 items per row on desktop */
      max-width: calc(33% - 30px);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-77winapk__step-item:hover {
      transform: translateY(-5px);
    }

    .page-77winapk__step-number {
      background-color: #007bff;
      color: #fff;
      width: 50px;
      height: 50px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8em;
      font-weight: bold;
      margin: 0 auto 20px;
    }

    .page-77winapk__step-title {
      font-size: 1.4em;
      color: #0056b3;
      margin-bottom: 15px;
    }

    .page-77winapk__step-description {
      font-size: 1em;
      color: #555;
    }

    /* Game Showcase Section */
    .page-77winapk__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-77winapk__game-card {
      background-color: #fff;
      border-radius: 15px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      text-align: center;
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-77winapk__game-card:hover {
      transform: translateY(-5px);
    }

    .page-77winapk__game-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      display: block;
      max-width: 100%;
    }

    .page-77winapk__game-content {
      padding: 20px;
    }

    .page-77winapk__game-title {
      font-size: 1.3em;
      color: #0056b3;
      margin-bottom: 10px;
    }

    .page-77winapk__game-description {
      font-size: 0.95em;
      color: #666;
    }

    /* FAQ Section */
    .page-77winapk__faq-section {
      text-align: left;
    }

    .page-77winapk__faq-list {
      max-width: 800px;
      margin: 40px auto 0;
      padding: 0;
      list-style: none;
    }

    .page-77winapk__faq-item {
      background-color: #fff;
      margin-bottom: 15px;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      overflow: hidden;
    }

    .page-77winapk__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: #f8f9fa;
      cursor: pointer;
      user-select: none;
      border-bottom: 1px solid #eee;
      transition: background-color 0.3s ease;
    }

    .page-77winapk__faq-question:hover {
      background-color: #e2e6ea;
    }

    .page-77winapk__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: #333;
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-77winapk__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: #007bff;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-77winapk__faq-item.active .page-77winapk__faq-toggle {
      transform: rotate(45deg); /* Change + to X or - */
    }

    .page-77winapk__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Initial padding */
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #555;
      font-size: 1em;
      text-align: left;
    }

    .page-77winapk__faq-item.active .page-77winapk__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to show content */
      padding: 20px 25px !important; /* Expanded padding */
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 992px) {
      .page-77winapk__hero-title {
        font-size: 2.8em;
      }
      .page-77winapk__hero-description {
        font-size: 1.3em;
      }
      .page-77winapk__title {
        font-size: 2.5em;
      }
      .page-77winapk__subtitle {
        font-size: 1.6em;
      }
    }

    @media (max-width: 768px) {
      .page-77winapk__hero-section {
        padding: 70px 0 60px; /* Adjusted padding-top for fixed header on mobile */
        min-height: 400px;
      }
      .page-77winapk__hero-title {
        font-size: 2.2em;
      }
      .page-77winapk__hero-description {
        font-size: 1.1em;
      }
      .page-77winapk__title {
        font-size: 2em;
      }
      .page-77winapk__subtitle {
        font-size: 1.4em;
      }
      .page-77winapk__section {
        padding: 40px 0;
      }
      .page-77winapk__button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      /* List item responsive */
      .page-77winapk__features-grid,
      .page-77winapk__steps-list,
      .page-77winapk__game-grid {
        grid-template-columns: 1fr; /* Single column on mobile */
        gap: 20px;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-77winapk__feature-item,
      .page-77winapk__step-item,
      .page-77winapk__game-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 20px !important; /* Adjust padding for mobile */
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-77winapk__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      /* Images responsive */
      .page-77winapk__feature-icon,
      .page-77winapk__game-image {
        max-width: 100% !important;
        height: auto !important;
        object-fit: cover !important;
        box-sizing: border-box !important;
      }

      .page-77winapk__game-image {
        height: 180px !important; /* Adjust height for mobile */
      }

      .page-77winapk__faq-question {
        padding: 15px 20px;
      }
      .page-77winapk__faq-question h3 {
        font-size: 1.1em;
      }
      .page-77winapk__faq-toggle {
        font-size: 1.5em;
      }
      .page-77winapk__faq-answer {
        padding: 0 20px;
      }
      .page-77winapk__faq-item.active .page-77winapk__faq-answer {
        padding: 15px 20px !important;
      }
    }

    @media (max-width: 480px) {
      .page-77winapk__hero-title {
        font-size: 1.8em;
      }
      .page-77winapk__hero-description {
        font-size: 1em;
      }
      .page-77winapk__title {
        font-size: 1.6em;
      }
      .page-77winapk__subtitle {
        font-size: 1.2em;
      }
      .page-77winapk__button {
        padding: 10px 20px;
        font-size: 1em;
      }
    }