/* Reset và Box-sizing */
    .page-13winlink * {
      box-sizing: border-box;
    }

    /* Base Styles */
    .page-13winlink {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: #e0e0e0; /* Light text color for dark background */
      background-color: #1a1a1a; /* Dark background */
      margin: 0;
      padding: 0;
      overflow-x: hidden; /* Prevent horizontal scroll */
    }

    .page-13winlink__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-13winlink__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: #222222; /* Slightly lighter dark for sections */
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-13winlink__section-title {
      font-size: 2.5em;
      color: #f3d45e; /* Gold accent color */
      text-align: center;
      margin-bottom: 30px;
      font-weight: bold;
      position: relative;
    }

    .page-13winlink__section-title::after {
      content: '';
      display: block;
      width: 80px;
      height: 4px;
      background-color: #f3d45e;
      margin: 10px auto 0;
      border-radius: 2px;
    }

    .page-13winlink__text-center {
      text-align: center;
    }

    .page-13winlink__paragraph {
      margin-bottom: 15px;
      font-size: 1.1em;
      color: #cccccc;
    }

    /* Hero Section */
    .page-13winlink__hero-section {
      position: relative;
      width: 100%;
      height: 60vh; /* Responsive height */
      min-height: 300px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      padding-top: 60px; /* Desktop: Ensure content is not hidden by fixed header */
      background: linear-gradient(135deg, #1a1a1a, #333333); /* Fallback gradient */
    }

    .page-13winlink__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
      filter: brightness(0.6); /* Darken image for text readability, not color change */
    }

    .page-13winlink__hero-content {
      position: relative;
      z-index: 2;
      color: #ffffff;
      max-width: 900px;
      padding: 20px;
      background-color: rgba(0, 0, 0, 0.4); /* Semi-transparent background for text */
      border-radius: 10px;
    }

    .page-13winlink__hero-title {
      font-size: 3.2em;
      margin-bottom: 15px;
      color: #f3d45e;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      line-height: 1.2;
    }

    .page-13winlink__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 25px;
      color: #e0e0e0;
    }

    .page-13winlink__button {
      display: inline-block;
      background-color: #f3d45e;
      color: #1a1a1a;
      padding: 12px 30px;
      border-radius: 5px;
      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-13winlink__button:hover {
      background-color: #e0b43e;
      transform: translateY(-2px);
    }

    /* Game Categories */
    .page-13winlink__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-13winlink__game-card {
      background-color: #333333;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
    }

    .page-13winlink__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
    }

    .page-13winlink__game-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      display: block;
      margin-bottom: 15px;
      max-width: 100%; /* Important for responsive images */
    }

    .page-13winlink__game-title {
      font-size: 1.5em;
      color: #f3d45e;
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-13winlink__game-description {
      font-size: 0.95em;
      color: #cccccc;
      padding: 0 15px;
    }

    /* Guide Section */
    .page-13winlink__guide-steps {
      display: flex;
      flex-direction: column;
      gap: 25px;
      margin-top: 30px;
    }

    .page-13winlink__step-item {
      display: flex;
      align-items: center;
      background-color: #333333;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-13winlink__step-number {
      font-size: 2.5em;
      color: #f3d45e;
      font-weight: bold;
      margin-right: 20px;
      flex-shrink: 0;
    }

    .page-13winlink__step-content h3 {
      font-size: 1.6em;
      color: #f3d45e;
      margin-top: 0;
      margin-bottom: 10px;
    }

    .page-13winlink__step-content p {
      color: #cccccc;
      font-size: 1.05em;
    }

    .page-13winlink__guide-image-wrapper {
      margin-top: 30px;
      text-align: center;
    }

    .page-13winlink__guide-image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    }

    /* Promotion Section */
    .page-13winlink__promo-card {
      background-color: #333333;
      border: 2px solid #f3d45e;
      border-radius: 10px;
      padding: 30px;
      text-align: center;
      margin-top: 30px;
      box-shadow: 0 0 20px rgba(243, 212, 94, 0.3);
    }

    .page-13winlink__promo-title {
      font-size: 2.8em;
      color: #f3d45e;
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-13winlink__promo-description {
      font-size: 1.2em;
      color: #ffffff;
      margin-bottom: 25px;
    }

    /* FAQ Section */
    .page-13winlink__faq-list {
      margin-top: 30px;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .page-13winlink__faq-item {
      background-color: #333333;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-13winlink__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #3a3a3a;
      border-bottom: 1px solid #444444;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-13winlink__faq-question:hover {
      background-color: #4a4a4a;
    }

    .page-13winlink__faq-question h3 {
      margin: 0;
      font-size: 1.3em;
      color: #f3d45e;
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-13winlink__faq-toggle {
      font-size: 1.8em;
      color: #f3d45e;
      font-weight: bold;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-13winlink__faq-item.active .page-13winlink__faq-toggle {
      transform: rotate(45deg); /* Change + to X-like for active state */
    }

    .page-13winlink__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.3s ease;
      color: #cccccc;
      font-size: 1.05em;
      opacity: 0;
    }

    .page-13winlink__faq-item.active .page-13winlink__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important;
      opacity: 1;
    }

    /* Floating Login Button */
    .page-13winlink__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      background-color: #e74c3c; /* Striking color for CTA */
      color: #ffffff;
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: background-color 0.3s ease, transform 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      line-height: 1.2;
      animation: page-13winlink__pulse 1.5s infinite; /* Add a pulse animation */
      border: none;
      cursor: pointer;
    }

    .page-13winlink__floating-login-button:hover {
      background-color: #c0392b;
      transform: scale(1.05);
      animation: none; /* Stop pulse on hover */
    }

    @keyframes page-13winlink__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.03); }
      100% { transform: scale(1); }
    }


    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-13winlink__container {
        padding: 15px;
      }

      .page-13winlink__section {
        padding: 30px 15px;
      }

      .page-13winlink__section-title {
        font-size: 2em;
      }

      .page-13winlink__hero-section {
        height: 50vh;
        padding-top: 50px; /* Mobile: Ensure content is not hidden by fixed header */
      }

      .page-13winlink__hero-title {
        font-size: 2.2em;
      }

      .page-13winlink__hero-subtitle {
        font-size: 1.1em;
      }

      .page-13winlink__button {
        padding: 10px 25px;
        font-size: 1em;
      }

      .page-13winlink__game-grid {
        grid-template-columns: 1fr;
      }

      .page-13winlink__game-image {
        height: 180px;
      }

      .page-13winlink__game-title {
        font-size: 1.3em;
      }

      .page-13winlink__step-item {
        flex-direction: column;
        text-align: center;
      }

      .page-13winlink__step-number {
        margin-right: 0;
        margin-bottom: 15px;
      }

      .page-13winlink__step-content h3 {
        font-size: 1.4em;
      }

      .page-13winlink__promo-title {
        font-size: 2em;
      }

      .page-13winlink__promo-description {
        font-size: 1em;
      }

      .page-13winlink__faq-question {
        padding: 12px 15px;
      }

      .page-13winlink__faq-question h3 {
        font-size: 1.1em;
      }

      .page-13winlink__faq-answer {
        padding: 15px !important; /* Adjust padding for mobile */
      }

      .page-13winlink__floating-login-button {
        padding: 12px 20px;
        font-size: 1em;
        bottom: 15px;
        right: 15px;
      }

      /* Ensure images are responsive on mobile */
      .page-13winlink img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-13winlink__game-image,
      .page-13winlink__guide-image,
      .page-13winlink__hero-background {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }