:root {
      --page-win-18-primary-color: #e0b34d; /* Golden yellow */
      --page-win-18-secondary-color: #333; /* Dark gray */
      --page-win-18-background-dark: #1a1a1a;
      --page-win-18-background-light: #2c2c2c;
      --page-win-18-text-color: #f5f5f5;
      --page-win-18-accent-color: #d4af37; /* Gold */
      --page-win-18-border-radius: 8px;
      --page-win-18-padding-section: 40px 20px;
      --page-win-18-padding-item: 20px;
    }

    .page-win-18 {
      font-family: 'Arial', sans-serif;
      color: var(--page-win-18-text-color);
      background-color: var(--page-win-18-background-dark);
      line-height: 1.6;
      padding-top: 10px; /* Minimal top padding, relying on body padding for header offset */
    }

    .page-win-18__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-win-18__hero-section {
      position: relative;
      background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('[GALLERY:hero:1920x1080:casino,gaming,win18,vietnam]') no-repeat center center/cover;
      color: #fff;
      text-align: center;
      padding: 100px 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 400px;
    }

    .page-win-18__hero-title {
      font-size: 2.8em;
      margin-bottom: 20px;
      color: var(--page-win-18-primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-win-18__hero-description {
      font-size: 1.2em;
      max-width: 800px;
      margin-bottom: 30px;
    }

    .page-win-18__cta-button {
      display: inline-block;
      background-color: var(--page-win-18-primary-color);
      color: var(--page-win-18-background-dark);
      padding: 15px 30px;
      border-radius: var(--page-win-18-border-radius);
      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-win-18__cta-button:hover {
      background-color: var(--page-win-18-accent-color);
      transform: translateY(-2px);
    }

    .page-win-18__section {
      padding: var(--page-win-18-padding-section);
      background-color: var(--page-win-18-background-light);
      margin-bottom: 20px;
      border-radius: var(--page-win-18-border-radius);
    }
    .page-win-18__section--dark {
      background-color: var(--page-win-18-background-dark);
    }

    .page-win-18__section-title {
      font-size: 2.2em;
      color: var(--page-win-18-primary-color);
      text-align: center;
      margin-bottom: 40px;
      position: relative;
    }
    .page-win-18__section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background-color: var(--page-win-18-accent-color);
      margin: 10px auto 0;
      border-radius: 2px;
    }

    .page-win-18__text-content {
      font-size: 1.1em;
      margin-bottom: 20px;
      text-align: justify;
    }

    .page-win-18__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      justify-content: center;
    }

    .page-win-18__game-card {
      background-color: var(--page-win-18-background-dark);
      border-radius: var(--page-win-18-border-radius);
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
    }

    .page-win-18__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
    }

    .page-win-18__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }
    .page-win-18__game-image-container {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-win-18__game-title {
      font-size: 1.4em;
      color: var(--page-win-18-primary-color);
      margin: 20px 15px 10px;
    }

    .page-win-18__game-description {
      font-size: 0.95em;
      color: #ccc;
      margin: 0 15px 15px;
      flex-grow: 1;
    }

    .page-win-18__promo-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
    }

    .page-win-18__promo-item {
      background-color: var(--page-win-18-background-dark);
      padding: var(--page-win-18-padding-item);
      border-radius: var(--page-win-18-border-radius);
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
      border-left: 5px solid var(--page-win-18-primary-color);
      box-sizing: border-box; /* Required for list items */
    }

    .page-win-18__promo-item-title {
      color: var(--page-win-18-primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-win-18__promo-item-text {
      font-size: 1em;
      color: #ddd;
    }

    .page-win-18__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .page-win-18__feature-item {
      background-color: var(--page-win-18-background-dark);
      padding: var(--page-win-18-padding-item);
      border-radius: var(--page-win-18-border-radius);
      text-align: center;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
      display: flex;
      flex-direction: column;
      align-items: center;
      box-sizing: border-box; /* Required for list items */
    }

    .page-win-18__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      object-fit: contain;
    }
    .page-win-18__feature-icon-container {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-win-18__feature-title {
      color: var(--page-win-18-primary-color);
      font-size: 1.2em;
      margin-bottom: 10px;
    }

    .page-win-18__feature-description {
      font-size: 0.95em;
      color: #ccc;
    }

    .page-win-18__partners-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
      gap: 20px;
      justify-items: center;
      align-items: center;
    }

    .page-win-18__partner-logo {
      width: 120px;
      height: 60px;
      object-fit: contain;
      filter: grayscale(80%) brightness(1.2); /* Allowed for stylistic effect, not color change */
      transition: filter 0.3s ease;
    }
    .page-win-18__partner-logo-container {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-win-18__partner-logo:hover {
      filter: grayscale(0%) brightness(1);
    }

    .page-win-18__faq-section {
      background-color: var(--page-win-18-background-light);
      padding: var(--page-win-18-padding-section);
      margin-bottom: 20px;
      border-radius: var(--page-win-18-border-radius);
    }

    .page-win-18__faq-item {
      background-color: var(--page-win-18-background-dark);
      margin-bottom: 10px;
      border-radius: var(--page-win-18-border-radius);
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-win-18__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: var(--page-win-18-secondary-color);
      border-bottom: 1px solid var(--page-win-18-background-light);
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-win-18__faq-question:hover {
      background-color: #444;
    }

    .page-win-18__faq-question-text {
      color: var(--page-win-18-primary-color);
      font-size: 1.1em;
      margin: 0;
      pointer-events: none; /* Prevent text from blocking click event */
    }

    .page-win-18__faq-toggle {
      font-size: 1.5em;
      color: var(--page-win-18-primary-color);
      font-weight: bold;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent icon from blocking click event */
    }

    .page-win-18__faq-item.active .page-win-18__faq-toggle {
      transform: rotate(45deg);
    }

    .page-win-18__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--page-win-18-background-dark);
      color: #ddd;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-win-18__faq-item.active .page-win-18__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-win-18__register-login-buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 30px;
    }
    .page-win-18__register-login-buttons .page-win-18__cta-button {
        min-width: 120px;
        text-align: center;
    }

    @media (max-width: 768px) {
      .page-win-18__hero-title {
        font-size: 2em;
      }
      .page-win-18__hero-description {
        font-size: 1em;
      }
      .page-win-18__section-title {
        font-size: 1.8em;
      }
      .page-win-18__game-grid,
      .page-win-18__promo-list,
      .page-win-18__features-grid,
      .page-win-18__partners-grid {
        grid-template-columns: 1fr;
      }

      .page-win-18__promo-item,
      .page-win-18__feature-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-win-18__promo-list,
      .page-win-18__features-grid {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-win-18__faq-question {
        padding: 12px 15px;
      }
      .page-win-18__faq-question-text {
        font-size: 1em;
      }
      .page-win-18__faq-answer {
        padding: 15px !important;
      }
      .page-win-18__cta-button {
          padding: 12px 25px;
          font-size: 1em;
      }
      .page-win-18__game-image,
      .page-win-18__feature-icon,
      .page-win-18__partner-logo {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-win-18__game-image-container,
      .page-win-18__feature-icon-container,
      .page-win-18__partner-logo-container {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
      .page-win-18__register-login-buttons {
          flex-direction: column;
          align-items: center;
      }
      .page-win-18__register-login-buttons .page-win-18__cta-button {
          width: 80%;
          max-width: 250px;
      }
    }