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

.page-tin-tuc {
    color: var(--color-text-main); /* Default text color for dark body background */
    background-color: var(--color-deep-navy); /* Assume body background from shared */
    line-height: 1.6;
    font-family: Arial, sans-serif;
}

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

/* Hero Section */
.page-tin-tuc__hero-section {
    position: relative;
    width: 100%;
    padding-top: 10px; /* Small top padding, assuming shared.css handles body padding-top */
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background-color: var(--color-deep-navy);
    overflow: hidden;
}

.page-tin-tuc__hero-image-wrapper {
    width: 100%;
    max-height: 500px; /* Constrain image height on desktop */
    overflow: hidden;
}

.page-tin-tuc__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    object-position: center;
}

.page-tin-tuc__hero-content {
    padding: 40px 20px;
    max-width: 900px;
    z-index: 1;
}

.page-tin-tuc__main-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    color: var(--color-text-main);
    margin-bottom: 15px;
    font-weight: bold;
    line-height: 1.2;
    letter-spacing: 0.05em;
}

.page-tin-tuc__hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* General Buttons */
.page-tin-tuc__btn-primary,
.page-tin-tuc__btn-secondary {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-tin-tuc__btn-primary {
    background: var(--button-gradient);
    color: var(--color-text-main);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-tin-tuc__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-tin-tuc__btn-secondary {
    background-color: transparent;
    color: var(--color-glow);
    border: 2px solid var(--color-glow);
    margin-left: 20px;
}

.page-tin-tuc__btn-secondary:hover {
    background-color: var(--color-glow);
    color: var(--color-deep-navy);
}

/* Section Titles */
.page-tin-tuc__section-title {
    font-size: 2.5rem;
    color: var(--color-text-main);
    text-align: center;
    margin-bottom: 15px;
    font-weight: bold;
}

.page-tin-tuc__section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 40px;
}

/* Latest Articles Section */
.page-tin-tuc__latest-articles-section {
    padding: 60px 0;
    background-color: var(--color-deep-navy);
}

.page-tin-tuc__article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.page-tin-tuc__article-card {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.page-tin-tuc__article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-tin-tuc__card-image {
    width: 100%;
    height: 200px; /* Fixed height for consistent card appearance */
    object-fit: cover;
    display: block;
}

.page-tin-tuc__card-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-tin-tuc__card-title {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 10px;
    line-height: 1.3;
}

.page-tin-tuc__card-title a {
    color: var(--color-text-main);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-tin-tuc__card-title a:hover {
    color: var(--color-gold);
}

.page-tin-tuc__card-excerpt {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    flex-grow: 1;
}

.page-tin-tuc__card-date {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    opacity: 0.7;
    margin-top: auto;
}

.page-tin-tuc__view-all-button-container {
    text-align: center;
    margin-top: 50px;
}

/* Categories Section */
.page-tin-tuc__categories-section {
    padding: 60px 0;
    background-color: var(--color-card-bg);
}

.page-tin-tuc__category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.page-tin-tuc__category-card {
    background-color: var(--color-primary);
    color: var(--color-text-main);
    text-align: center;
    padding: 25px 15px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-tin-tuc__category-card:hover {
    background-color: var(--color-secondary);
    transform: translateY(-3px);
}

/* About News Section */
.page-tin-tuc__about-news-section {
    padding: 60px 0;
    background-color: var(--color-deep-navy);
}

.page-tin-tuc__content-wrapper {
    display: flex;
    gap: 40px;
    align-items: center;
}

.page-tin-tuc__text-block {
    flex: 1;
}

.page-tin-tuc__text-block p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.page-tin-tuc__image-block {
    flex: 1;
    min-width: 400px; /* Ensure image block has a minimum width */
}

.page-tin-tuc__feature-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

/* FAQ Section */
.page-tin-tuc__faq-section {
    padding: 60px 0;
    background-color: var(--color-card-bg);
}

.page-tin-tuc__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.page-tin-tuc__faq-item {
    background-color: var(--color-primary);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-tin-tuc__faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--color-text-main);
    background-color: var(--color-primary);
    transition: background-color 0.3s ease;
}

.page-tin-tuc__faq-item summary::-webkit-details-marker {
    display: none;
}

.page-tin-tuc__faq-item summary:hover {
    background-color: #1a4a8d; /* Slightly lighter primary */
}

.page-tin-tuc__faq-qtext {
    flex-grow: 1;
}

.page-tin-tuc__faq-toggle {
    font-size: 1.5rem;
    margin-left: 15px;
    color: var(--color-gold);
}

.page-tin-tuc__faq-item[open] .page-tin-tuc__faq-toggle {
    content: '−';
}

.page-tin-tuc__faq-answer {
    padding: 0 25px 20px;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* CTA Bottom Section */
.page-tin-tuc__cta-bottom-section {
    padding: 80px 0;
    background-color: var(--color-deep-navy);
    text-align: center;
}

.page-tin-tuc__cta-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-tin-tuc__cta-buttons-wrapper {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-tin-tuc__container {
        padding: 20px 30px;
    }

    .page-tin-tuc__article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-tin-tuc__category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-tin-tuc__content-wrapper {
        flex-direction: column;
        text-align: center;
    }

    .page-tin-tuc__image-block {
        min-width: unset;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-tin-tuc__hero-section {
        padding-top: 10px !important; /* Ensure small top padding */
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__hero-image-wrapper {
        max-height: 300px;
    }

    .page-tin-tuc__hero-content {
        padding: 30px 15px;
    }

    .page-tin-tuc__main-title {
        font-size: clamp(2rem, 8vw, 2.5rem); /* Adjusted for mobile */
    }

    .page-tin-tuc__hero-description {
        font-size: 1rem;
    }

    /* 深色导语区 (Section Titles/Subtitles) */
    .page-tin-tuc__section-title {
        font-size: 2rem;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__section-subtitle {
        font-size: 0.95rem;
        padding-left: 15px;
        padding-right: 15px;
        margin-bottom: 30px;
    }

    /* 博客网格 */
    .page-tin-tuc__latest-articles-section,
    .page-tin-tuc__categories-section,
    .page-tin-tuc__about-news-section,
    .page-tin-tuc__faq-section,
    .page-tin-tuc__cta-bottom-section {
        padding: 40px 0;
    }

    .page-tin-tuc__article-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__article-card {
        height: auto;
    }

    .page-tin-tuc__card-image {
        height: 180px;
    }

    .page-tin-tuc__card-title {
        font-size: 1.1rem;
    }

    .page-tin-tuc__card-excerpt {
        font-size: 0.9rem;
    }

    .page-tin-tuc__category-grid {
        grid-template-columns: repeat(2, 1fr);
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__category-card {
        font-size: 1rem;
        padding: 20px 10px;
    }

    .page-tin-tuc__content-wrapper {
        gap: 20px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__text-block p {
        font-size: 0.95rem;
    }

    .page-tin-tuc__image-block {
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 通用图片与容器 */
    .page-tin-tuc img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }
    
    .page-tin-tuc__section,
    .page-tin-tuc__card,
    .page-tin-tuc__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    /* 按钮与按钮容器 */
    .page-tin-tuc__btn-primary,
    .page-tin-tuc__btn-secondary,
    .page-tin-tuc a[class*="button"],
    .page-tin-tuc a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        margin-left: 0 !important; /* Remove margin-left for secondary button */
        margin-bottom: 15px; /* Add spacing between stacked buttons */
    }

    .page-tin-tuc__cta-buttons-wrapper {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__cta-buttons-wrapper .page-tin-tuc__btn-secondary {
        margin-bottom: 0; /* No bottom margin for the last button */
    }

    .page-tin-tuc__cta-buttons-wrapper .page-tin-tuc__btn-primary {
        margin-bottom: 0; /* No bottom margin for the last button */
    }

    /* FAQ 与其他模块 */
    .page-tin-tuc__faq-item summary {
        font-size: 1rem;
        padding: 15px 20px;
    }

    .page-tin-tuc__faq-answer {
        padding: 0 20px 15px;
    }

    .page-tin-tuc__faq-qtext {
        font-size: 0.95rem;
    }
    
    .page-tin-tuc__faq-list {
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-tin-tuc__cta-description {
        font-size: 1rem;
        padding-left: 15px;
        padding-right: 15px;
    }
}

@media (max-width: 549px) {
    .page-tin-tuc__category-grid {
        grid-template-columns: 1fr;
    }
}