:root {
      --page-3king-apk-primary-color: #ffac41; /* Màu cam nổi bật */
      --page-3king-apk-secondary-color: #ff8e00; /* Màu cam đậm hơn */
      --page-3king-apk-dark-bg: #1a1a2e; /* Nền tối */
      --page-3king-apk-medium-bg: #2b2b40; /* Nền trung bình */
      --page-3king-apk-light-text: #e0e0e0; /* Văn bản sáng */
      --page-3king-apk-gray-text: #b0b0b0; /* Văn bản xám */
      --page-3king-apk-border-color: #3a3a50; /* Màu viền */
    }

    /* Base styles for the page */
    .page-3king-apk {
      font-family: 'Arial', sans-serif;
      color: var(--page-3king-apk-light-text);
      background-color: var(--page-3king-apk-dark-bg);
      line-height: 1.6;
      padding-top: 10px; /* Small padding top, assuming body padding-top handles header offset */
    }

    .page-3king-apk__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px 15px;
      box-sizing: border-box;
    }

    .page-3king-apk__section {
      padding: 60px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .page-3king-apk__section--dark {
      background-color: var(--page-3king-apk-medium-bg);
    }

    .page-3king-apk__section-title {
      font-size: 2.8em;
      color: var(--page-3king-apk-primary-color);
      margin-bottom: 30px;
      font-weight: bold;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .page-3king-apk__section-subtitle {
      font-size: 1.2em;
      color: var(--page-3king-apk-gray-text);
      margin-bottom: 50px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Hero Section */
    .page-3king-apk__hero-section {
      background: var(--page-3king-apk-dark-bg);
      padding: 80px 0 60px;
      position: relative;
      overflow: hidden;
    }

    .page-3king-apk__hero-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      z-index: 10;
      position: relative;
    }

    .page-3king-apk__hero-title {
      font-size: 3.5em;
      color: var(--page-3king-apk-primary-color);
      margin-bottom: 20px;
      font-weight: 900;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-3king-apk__hero-description {
      font-size: 1.4em;
      color: var(--page-3king-apk-light-text);
      margin-bottom: 40px;
      max-width: 800px;
    }

    .page-3king-apk__download-button {
      display: inline-block;
      background-color: var(--page-3king-apk-primary-color);
      color: var(--page-3king-apk-dark-bg);
      padding: 15px 35px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.3em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      border: none;
      cursor: pointer;
    }

    .page-3king-apk__download-button:hover {
      background-color: var(--page-3king-apk-secondary-color);
      transform: translateY(-3px);
    }

    .page-3king-apk__hero-image {
      margin-top: 50px;
      max-width: 100%;
      height: auto;
      border-radius: 15px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }

    /* Features Section */
    .page-3king-apk__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 50px;
    }

    .page-3king-apk__feature-item {
      background-color: var(--page-3king-apk-dark-bg);
      padding: 30px;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-3king-apk-border-color);
    }

    .page-3king-apk__feature-item:hover {
      transform: translateY(-10px);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    }

    .page-3king-apk__feature-icon {
      max-width: 250px; /* Min size 200x200, so 250px is good */
      height: auto;
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-3king-apk__feature-title {
      font-size: 1.8em;
      color: var(--page-3king-apk-primary-color);
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-3king-apk__feature-description {
      font-size: 1em;
      color: var(--page-3king-apk-gray-text);
    }

    /* Game Categories Section */
    .page-3king-apk__game-categories-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 50px;
    }

    .page-3king-apk__game-category-card {
      background-color: var(--page-3king-apk-dark-bg);
      border-radius: 15px;
      overflow: hidden;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-3king-apk-border-color);
      text-align: center;
      padding-bottom: 20px;
    }

    .page-3king-apk__game-category-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    }

    .page-3king-apk__game-category-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      display: block;
    }

    .page-3king-apk__game-category-title {
      font-size: 1.5em;
      color: var(--page-3king-apk-primary-color);
      margin: 20px 0 10px;
      font-weight: bold;
    }

    /* Download Steps Section */
    .page-3king-apk__steps-list {
      list-style: none;
      padding: 0;
      margin-top: 50px;
      display: flex;
      flex-direction: column;
      gap: 40px;
    }

    .page-3king-apk__step-item {
      display: flex;
      align-items: center;
      text-align: left;
      background-color: var(--page-3king-apk-dark-bg);
      padding: 30px;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-3king-apk-border-color);
      box-sizing: border-box;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-3king-apk__step-item:nth-child(even) {
      flex-direction: row-reverse;
    }

    .page-3king-apk__step-number {
      font-size: 3em;
      font-weight: 900;
      color: var(--page-3king-apk-secondary-color);
      min-width: 80px;
      text-align: center;
      margin-right: 30px;
    }
    .page-3king-apk__step-item:nth-child(even) .page-3king-apk__step-number {
      margin-right: 0;
      margin-left: 30px;
    }

    .page-3king-apk__step-content {
      flex: 1;
    }

    .page-3king-apk__step-title {
      font-size: 2em;
      color: var(--page-3king-apk-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-3king-apk__step-description {
      font-size: 1.1em;
      color: var(--page-3king-apk-gray-text);
    }

    .page-3king-apk__step-image {
      max-width: 300px;
      height: auto;
      border-radius: 10px;
      margin-left: 30px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }
    .page-3king-apk__step-item:nth-child(even) .page-3king-apk__step-image {
      margin-left: 0;
      margin-right: 30px;
    }

    /* Promotions Section */
    .page-3king-apk__promo-card {
      background-color: var(--page-3king-apk-dark-bg);
      border-radius: 15px;
      padding: 30px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-3king-apk-border-color);
      max-width: 800px;
      margin: 50px auto 0;
    }

    .page-3king-apk__promo-image {
      max-width: 100%;
      height: auto;
      border-radius: 10px;
      margin-bottom: 25px;
    }

    .page-3king-apk__promo-title {
      font-size: 2em;
      color: var(--page-3king-apk-primary-color);
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-3king-apk__promo-description {
      font-size: 1.1em;
      color: var(--page-3king-apk-gray-text);
      margin-bottom: 25px;
    }

    /* FAQ Section */
    .page-3king-apk__faq-section {
      text-align: left;
    }

    .page-3king-apk__faq-list {
      margin-top: 50px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-3king-apk__faq-item {
      background-color: var(--page-3king-apk-dark-bg);
      border: 1px solid var(--page-3king-apk-border-color);
      border-radius: 10px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
    }

    .page-3king-apk__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      user-select: none;
      background-color: var(--page-3king-apk-medium-bg);
      color: var(--page-3king-apk-light-text);
      font-size: 1.3em;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-3king-apk__faq-question:hover {
      background-color: #3a3a50;
    }

    .page-3king-apk__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      color: var(--page-3king-apk-primary-color);
      pointer-events: none; /* Prevent h3 from intercepting click */
    }

    .page-3king-apk__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 20px;
      transition: transform 0.3s ease;
      color: var(--page-3king-apk-primary-color);
      pointer-events: none; /* Prevent toggle icon from intercepting click */
    }

    .page-3king-apk__faq-item.active .page-3king-apk__faq-toggle {
      transform: rotate(45deg); /* For '-' effect */
    }

    .page-3king-apk__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Initial padding for collapsed state */
      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-3king-apk-gray-text);
      font-size: 1.1em;
      background-color: var(--page-3king-apk-dark-bg);
    }

    .page-3king-apk__faq-item.active .page-3king-apk__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-3king-apk__hero-title {
        font-size: 2.8em;
      }
      .page-3king-apk__hero-description {
        font-size: 1.2em;
      }
      .page-3king-apk__section-title {
        font-size: 2.2em;
      }
      .page-3king-apk__step-item {
        flex-direction: column;
        text-align: center;
      }
      .page-3king-apk__step-item:nth-child(even) {
        flex-direction: column; /* Reset for even items */
      }
      .page-3king-apk__step-number {
        margin-bottom: 20px;
        margin-right: 0;
        min-width: unset;
      }
      .page-3king-apk__step-item:nth-child(even) .page-3king-apk__step-number {
        margin-left: 0;
      }
      .page-3king-apk__step-image {
        margin-top: 20px;
        margin-left: 0;
      }
      .page-3king-apk__step-item:nth-child(even) .page-3king-apk__step-image {
        margin-right: 0;
      }
    }

    @media (max-width: 768px) {
      .page-3king-apk__hero-title {
        font-size: 2.2em;
      }
      .page-3king-apk__hero-description {
        font-size: 1em;
      }
      .page-3king-apk__download-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }
      .page-3king-apk__section {
        padding: 40px 0;
      }
      .page-3king-apk__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
      }
      .page-3king-apk__section-subtitle {
        font-size: 1em;
        margin-bottom: 30px;
      }
      .page-3king-apk__features-grid,
      .page-3king-apk__game-categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-3king-apk__feature-item,
      .page-3king-apk__game-category-card,
      .page-3king-apk__step-item,
      .page-3king-apk__promo-card,
      .page-3king-apk__faq-item {
        padding: 20px;
        box-sizing: border-box !important;
        width: 100% !important;
        max-width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-3king-apk__game-category-image {
        height: 180px;
      }
      .page-3king-apk__step-title {
        font-size: 1.5em;
      }
      .page-3king-apk__step-description {
        font-size: 0.95em;
      }
      .page-3king-apk__faq-question {
        font-size: 1.1em;
        padding: 15px 20px;
      }
      .page-3king-apk__faq-question h3 {
        font-size: 1.1em;
      }
      .page-3king-apk__faq-toggle {
        font-size: 1.5em;
      }
      .page-3king-apk__faq-answer {
        padding: 15px 20px !important; /* Adjusted for mobile */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
        font-size: 1em;
      }
      .page-3king-apk__steps-list,
      .page-3king-apk__faq-list {
        padding: 0 15px; /* Adjust padding for overall list container */
        margin-top: 30px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }
      .page-3king-apk__faq-list .page-3king-apk__faq-item {
        margin-bottom: 10px;
      }
    }

    @media (max-width: 480px) {
      .page-3king-apk__hero-title {
        font-size: 1.8em;
      }
      .page-3king-apk__hero-description {
        font-size: 0.9em;
      }
      .page-3king-apk__download-button {
        padding: 10px 20px;
        font-size: 1em;
      }
      .page-3king-apk__section-title {
        font-size: 1.5em;
      }
      .page-3king-apk__feature-title {
        font-size: 1.5em;
      }
      .page-3king-apk__game-category-title {
        font-size: 1.3em;
      }
      .page-3king-apk__step-title {
        font-size: 1.3em;
      }
      .page-3king-apk__promo-title {
        font-size: 1.5em;
      }
      .page-3king-apk__faq-question {
        font-size: 1em;
      }
      .page-3king-apk__faq-question h3 {
        font-size: 1em;
      }
    }