:root {
    --page-game-bai-tien-len-primary: #11A84E;
    --page-game-bai-tien-len-secondary: #22C768;
    --page-game-bai-tien-len-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --page-game-bai-tien-len-card-bg: #11271B;
    --page-game-bai-tien-len-background: #08160F;
    --page-game-bai-tien-len-text-main: #F2FFF6;
    --page-game-bai-tien-len-text-secondary: #A7D9B8;
    --page-game-bai-tien-len-border: #2E7A4E;
    --page-game-bai-tien-len-glow: #57E38D;
    --page-game-bai-tien-len-gold: #F2C14E;
    --page-game-bai-tien-len-divider: #1E3A2A;
    --page-game-bai-tien-len-deep-green: #0A4B2C;
}

.page-game-bai-tien-len {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-game-bai-tien-len-text-main);
    background-color: var(--page-game-bai-tien-len-background);
}

.page-game-bai-tien-len__content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    box-sizing: border-box;
}

.page-game-bai-tien-len__text-block p,
.page-game-bai-tien-len__text-block li {
    margin-bottom: 1em;
    font-size: 1.1em;
    color: var(--page-game-bai-tien-len-text-secondary);
}

.page-game-bai-tien-len__text-block h3 {
    color: var(--page-game-bai-tien-len-text-main);
    margin-top: 1.5em;
    margin-bottom: 0.8em;
}

.page-game-bai-tien-len__section-title {
    font-size: clamp(2em, 4vw, 2.8em);
    color: var(--page-game-bai-tien-len-gold);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    line-height: 1.2;
}

/* HERO 主图区域 */
.page-game-bai-tien-len__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, relying on body for header offset */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background-color: var(--page-game-bai-tien-len-background);
}

.page-game-bai-tien-len__hero-image {
    width: 100%;
    max-height: 600px; /* Limit height for aesthetic */
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.page-game-bai-tien-len__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Default for desktop */
    display: block;
}

.page-game-bai-tien-len__hero-content {
    position: relative;
    z-index: 2;
    padding: 30px 20px 60px;
    max-width: 900px;
    margin-top: -100px; /* Overlap slightly with image for visual interest */
    background: linear-gradient(0deg, var(--page-game-bai-tien-len-background) 70%, transparent 100%);
}

.page-game-bai-tien-len__main-title {
    font-size: clamp(2.5em, 5vw, 3.5em); /* H1 font size with clamp */
    color: var(--page-game-bai-tien-len-gold);
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 800;
}

.page-game-bai-tien-len__hero-description {
    font-size: 1.2em;
    color: var(--page-game-bai-tien-len-text-secondary);
    margin-bottom: 30px;
}

/* 按钮与按钮容器 */
.page-game-bai-tien-len__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    width: 100%; /* For responsive max-width below */
    max-width: 600px; /* Limit button group width */
    margin: 0 auto;
}

.page-game-bai-tien-len__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
    box-sizing: border-box;
    min-width: 180px; /* Minimum width for buttons */
}

.page-game-bai-tien-len__btn--primary {
    background: var(--page-game-bai-tien-len-button-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-game-bai-tien-len__btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-game-bai-tien-len__btn--secondary {
    background: transparent;
    color: var(--page-game-bai-tien-len-primary);
    border: 2px solid var(--page-game-bai-tien-len-primary);
}

.page-game-bai-tien-len__btn--secondary:hover {
    background: var(--page-game-bai-tien-len-primary);
    color: #ffffff;
}

/* 通用图片与容器 */
.page-game-bai-tien-len__image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--page-game-bai-tien-len-border);
}

/* FAQ Section */
details.page-game-bai-tien-len__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--page-game-bai-tien-len-border);
  overflow: hidden;
  background: var(--page-game-bai-tien-len-card-bg);
}
details.page-game-bai-tien-len__faq-item summary.page-game-bai-tien-len__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-game-bai-tien-len__faq-item summary.page-game-bai-tien-len__faq-question::-webkit-details-marker {
  display: none;
}
details.page-game-bai-tien-len__faq-item summary.page-game-bai-tien-len__faq-question:hover {
  background: var(--page-game-bai-tien-len-deep-green);
}
.page-game-bai-tien-len__faq-qtext {
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--page-game-bai-tien-len-text-main);
}
.page-game-bai-tien-len__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--page-game-bai-tien-len-gold);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-game-bai-tien-len__faq-item .page-game-bai-tien-len__faq-answer {
  padding: 0 20px 20px;
  background: var(--page-game-bai-tien-len-deep-green);
  border-radius: 0 0 8px 8px;
}
.page-game-bai-tien-len__faq-answer p {
    color: var(--page-game-bai-tien-len-text-secondary);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-game-bai-tien-len__content-area {
        padding: 30px 15px;
    }
    .page-game-bai-tien-len__hero-content {
        margin-top: -80px;
        padding: 20px 15px 40px;
    }
    .page-game-bai-tien-len__main-title {
        font-size: clamp(2.2em, 4.5vw, 3em);
    }
    .page-game-bai-tien-len__hero-description {
        font-size: 1.1em;
    }
    .page-game-bai-tien-len__section-title {
        font-size: clamp(1.8em, 3.5vw, 2.5em);
    }
    .page-game-bai-tien-len__text-block p,
    .page-game-bai-tien-len__text-block li,
    .page-game-bai-tien-len__faq-qtext {
        font-size: 1em;
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-game-bai-tien-len__hero-section {
        padding-top: 10px; /* Small top padding, relying on body for header offset */
    }
    .page-game-bai-tien-len__hero-image img {
        object-fit: contain !important; /* Prevent cropping on mobile */
        aspect-ratio: unset !important; /* Allow natural aspect ratio */
        height: auto !important;
        max-height: 300px !important; /* Constrain height */
    }
    .page-game-bai-tien-len__hero-content {
        margin-top: -50px; /* Adjust overlap for smaller screens */
        padding: 15px 15px 30px;
    }
    .page-game-bai-tien-len__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em); /* Smaller H1 for mobile */
        text-align: center;
    }
    .page-game-bai-tien-len__hero-description {
        font-size: 1em;
        text-align: center;
    }

    /* 通用图片与容器 */
    .page-game-bai-tien-len img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        margin-left: auto;
        margin-right: auto;
    }
    .page-game-bai-tien-len__content-area,
    .page-game-bai-tien-len__section,
    .page-game-bai-tien-len__card,
    .page-game-bai-tien-len__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 按钮与按钮容器 */
    .page-game-bai-tien-len__cta-buttons {
        flex-direction: column !important; /* Stack buttons vertically */
        gap: 15px !important;
        padding-left: 15px;
        padding-right: 15px;
        max-width: 100% !important;
        width: 100% !important;
    }
    .page-game-bai-tien-len__btn {
        max-width: 100% !important;
        width: 100% !important;
        min-width: unset !important; /* Remove min-width for full flexibility */
        padding: 12px 20px !important;
        font-size: 1em !important;
    }

    /* 装饰主标题 + 长文 SEO 区 */
    .page-game-bai-tien-len__section-title {
        font-size: clamp(1.5em, 6vw, 2em); /* Smaller section titles for mobile */
        margin-bottom: 25px;
        text-align: center;
    }
    .page-game-bai-tien-len__text-block {
        max-width: 100%;
        overflow-x: hidden;
        word-wrap: break-word;
    }
    .page-game-bai-tien-len__text-block p,
    .page-game-bai-tien-len__text-block li {
        font-size: 0.95em;
    }
    .page-game-bai-tien-len__text-block h3 {
        font-size: 1.2em;
        text-align: left;
    }

    /* FAQ Section */
    details.page-game-bai-tien-len__faq-item summary.page-game-bai-tien-len__faq-question {
        padding: 15px;
    }
    .page-game-bai-tien-len__faq-qtext {
        font-size: 1em;
    }
    .page-game-bai-tien-len__faq-toggle {
        font-size: 20px;
        width: 24px;
        margin-left: 10px;
    }
    details.page-game-bai-tien-len__faq-item .page-game-bai-tien-len__faq-answer {
        padding: 0 15px 15px;
    }
    .page-game-bai-tien-len__faq-answer p {
        font-size: 0.95em;
    }
}