:root {
    --primary-color: #113B7A;
    --secondary-color: #1D5FD1;
    --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
    --card-bg-color: #10233F;
    --text-main-color: #F3F8FF;
    --text-secondary-color: #AFC4E8;
    --border-color: #244D84;
    --glow-color: #4FA8FF;
    --gold-color: #F2C14E;
    --divider-color: #1B3357;
    --deep-navy-color: #08162B;
}

.page-about {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-main-color); /* Default text color for the page, light for dark body background */
    background-color: transparent; /* Rely on body background from shared.css */
}

.page-about__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

/* Hero Section */
.page-about__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, relying on body padding for header offset */
    padding-bottom: 40px;
    color: var(--text-main-color); /* Light text on hero */
    text-align: center;
    overflow: hidden;
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-height: 600px; /* Limit height for aesthetic */
    overflow: hidden;
    margin-bottom: 30px;
}

.page-about__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    filter: brightness(0.7); /* Slightly darken image for text readability */
}

.page-about__hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative; /* Ensure content is above image filter if any */
    z-index: 2;
}

.page-about__hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem); /* Responsive font size */
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--text-main-color); /* Light text */
}

.page-about__hero-description {
    font-size: 1.25rem;
    margin-bottom: 30px;
    color: var(--text-secondary-color); /* Slightly lighter text */
}

/* CTA Buttons */
.page-about__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    max-width: 100%; /* For responsive buttons */
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-about__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main-color); /* Light text on dark button */
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about__btn-secondary {
    background: transparent;
    color: var(--text-main-color); /* Light text on transparent button */
    border: 2px solid var(--border-color); /* Border with theme color */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-about__btn-secondary:hover {
    background: var(--border-color); /* Hover effect */
    color: var(--text-main-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* General Section Styles */
.page-about__section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--gold-color); /* Gold color for section titles */
    line-height: 1.3;
}

.page-about__section-description {
    font-size: 1.15rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    color: var(--text-secondary-color);
}

.page-about__dark-section {
    background-color: var(--card-bg-color); /* Dark background for sections */
    padding: 60px 0;
    color: var(--text-main-color);
}

.page-about__vision-mission-section,
.page-about__why-choose-section,
.page-about__responsible-gambling-section,
.page-about__join-us-section {
    padding: 60px 0;
}

/* Content Grid */
.page-about__content-grid {
    display: flex;
    align-items: center;
    gap: 40px;
}

.page-about__content-grid--reverse {
    flex-direction: row-reverse;
}

.page-about__text-block {
    flex: 1;
}

.page-about__text-block p {
    margin-bottom: 15px;
    font-size: 1.05rem;
    color: var(--text-secondary-color);
}

.page-about__text-block strong {
    color: var(--text-main-color);
}

.page-about__image-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about__image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Features Grid */
.page-about__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__feature-card {
    background-color: var(--card-bg-color); /* Dark card background */
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    color: var(--text-main-color); /* Light text on dark card */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

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

.page-about__card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gold-color); /* Gold color for card titles */
}

.page-about__feature-card p {
    font-size: 1rem;
    color: var(--text-secondary-color);
}

/* List Styles */
.page-about__list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.page-about__list-item {
    background-color: var(--deep-navy-color); /* Even darker background for list items */
    padding: 10px 15px;
    margin-bottom: 10px;
    border-left: 4px solid var(--glow-color); /* Accent border */
    border-radius: 5px;
    color: var(--text-secondary-color);
    font-size: 1.05rem;
}

.page-about__list-item strong {
    color: var(--text-main-color);
}

/* Global image styles */
.page-about img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Responsive styles */
@media (max-width: 1024px) {
    .page-about__hero-title {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }
    .page-about__section-title {
        font-size: 2rem;
    }
    .page-about__hero-description {
        font-size: 1.1rem;
    }
    .page-about__feature-card {
        padding: 25px;
    }
}

@media (max-width: 768px) {
    .page-about {
        font-size: 16px;
        line-height: 1.6;
    }

    /* HERO 主图区域 */
    .page-about__hero-section {
        padding-top: 10px !important; /* Small top padding for mobile */
        padding-bottom: 30px !important;
    }
    .page-about__hero-image-wrapper {
        margin-bottom: 20px !important;
    }
    .page-about__hero-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem) !important;
        margin-bottom: 15px !important;
    }
    .page-about__hero-description {
        font-size: 1rem !important;
        margin-bottom: 25px !important;
    }

    /* 通用图片与容器 */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-about__container,
    .page-about__section,
    .page-about__card,
    .page-about__content-grid,
    .page-about__features-grid {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    /* 按钮与按钮容器 */
    .page-about__cta-buttons {
        flex-direction: column !important; /* Stack buttons vertically */
        gap: 15px !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
    }
    .page-about__btn-primary,
    .page-about__btn-secondary,
    .page-about a[class*="button"],
    .page-about a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding: 12px 20px !important;
        font-size: 1rem !important;
    }

    /* 其他内容模块 */
    .page-about__content-grid {
        flex-direction: column !important; /* Stack content vertically */
        gap: 30px !important;
    }
    .page-about__content-grid--reverse {
        flex-direction: column-reverse !important; /* Reverse stack */
    }
    .page-about__section-title {
        font-size: 1.8rem !important;
        margin-bottom: 15px !important;
    }
    .page-about__section-description {
        font-size: 1rem !important;
        margin-bottom: 30px !important;
    }
    .page-about__features-grid {
        grid-template-columns: 1fr !important; /* Single column for cards */
        gap: 20px !important;
    }
    .page-about__feature-card {
        padding: 20px !important;
    }
    .page-about__card-title {
        font-size: 1.3rem !important;
    }
    .page-about__list-item {
        font-size: 1rem !important;
    }
    .page-about__dark-section,
    .page-about__vision-mission-section,
    .page-about__why-choose-section,
    .page-about__responsible-gambling-section,
    .page-about__join-us-section {
        padding: 40px 0 !important;
    }
}