.page-header {
    background-color: var(--primary-color);
    padding: 140px 0 80px;
    text-align: center;
    color: var(--white);
    background-image: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.95)), url('../images/background-image.webp');
    background-size: cover;
    background-position: center;
}
.page-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}
.page-desc {
    font-size: 1rem;
    opacity: 0.9;
    max-width: 720px;
    margin: 0 auto;
}
.page-header-article {
    text-align: left;
}
.page-header-article .page-title {
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.35;
}
.page-header-article .container {
    max-width: 860px;
}

.desktop-nav a.nav-current,
.mobile-menu a.nav-current {
    color: var(--primary-color);
    font-weight: bold;
}

.blog-breadcrumb {
    display: flex;
    justify-content: center;
    font-size: 0.8125rem;
    letter-spacing: 0.04em;
    margin-bottom: 1.25rem;
    opacity: 0.85;
}
.blog-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}
.blog-breadcrumb li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.blog-breadcrumb li:not(:last-child)::after {
    content: "/";
    opacity: 0.7;
}
.page-header-article .blog-breadcrumb,
.page-header-article .blog-breadcrumb ol {
    justify-content: flex-start;
}
.blog-breadcrumb a:hover {
    color: var(--secondary-color);
}

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}
.blog-meta-light {
    justify-content: flex-start;
    color: rgba(255,255,255,0.85);
    margin-top: 1.25rem;
}
.blog-category,
.blog-card-category {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.2rem 0.7rem;
    font-size: 0.75rem;
    font-weight: bold;
    border-radius: 4px;
    letter-spacing: 0.04em;
}

.blog-list-section {
    background: var(--accent-color);
}
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
.blog-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}
.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.blog-card-link {
    display: block;
    height: 100%;
    color: inherit;
}
.blog-card-img {
    width: 100%;
    height: 220px;
    background-color: var(--accent-color);
    position: relative;
    overflow: hidden;
}
.blog-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: rgba(255,255,255,0.7);
    font-size: 0.875rem;
}
.blog-card-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 1;
}
.blog-card-body {
    padding: 1.5rem;
}
.blog-card-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.blog-card-title {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}
.blog-card-excerpt {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.7;
}
.blog-card-more {
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 0.875rem;
}

.blog-empty {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    max-width: 720px;
    margin: 0 auto;
}

.blog-pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 3rem;
}
.blog-pagination a,
.blog-pagination span {
    min-width: 42px;
    height: 42px;
    padding: 0 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
}
.blog-pagination a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}
.blog-pagination .is-current {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.blog-article-section {
    background: var(--white);
}
.blog-article-layout {
    max-width: 860px;
}
.blog-eyecatch {
    margin-bottom: 2.5rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(0,0,0,0.08);
}
.blog-eyecatch img {
    width: 100%;
    height: auto;
}

.blog-body {
    font-size: 1.05rem;
    line-height: 1.95;
    color: var(--text-main);
}
.blog-body > *:first-child {
    margin-top: 0;
}
.blog-body h2,
.blog-body h3,
.blog-body h4 {
    color: var(--primary-color);
    font-family: var(--font-serif);
    line-height: 1.4;
    margin: 2.5rem 0 1rem;
}
.blog-body h2 { font-size: 1.75rem; }
.blog-body h3 { font-size: 1.35rem; }
.blog-body p { margin-bottom: 1.25rem; }
.blog-body a {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.blog-body a:hover { color: var(--secondary-color); }
.blog-body ul,
.blog-body ol {
    margin: 0 0 1.5rem 1.4rem;
    padding: 0;
}
.blog-body ul { list-style: disc; }
.blog-body ol { list-style: decimal; }
.blog-body li { margin-bottom: 0.5rem; }
.blog-body img,
.blog-body video,
.blog-body iframe {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
}
.blog-body figure {
    margin: 1.75rem 0;
}
.blog-body figcaption {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    text-align: center;
}
.blog-body blockquote {
    margin: 1.75rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--secondary-color);
    background: var(--accent-color);
    color: var(--text-muted);
}
.blog-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.75rem 0;
    font-size: 0.9375rem;
}
.blog-body th,
.blog-body td {
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    text-align: left;
}
.blog-body th {
    background: var(--accent-color);
}

.blog-article-nav {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.blog-related {
    margin-top: 4rem;
}
.blog-related-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}
.blog-related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}
.blog-related-card {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
    align-items: center;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    padding: 0.75rem;
    transition: transform 0.3s, box-shadow 0.3s;
}
.blog-related-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.08);
}
.blog-related-img {
    width: 110px;
    height: 80px;
    background: var(--accent-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.75rem;
}
.blog-related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-related-card h3 {
    font-size: 1rem;
    color: var(--primary-color);
    line-height: 1.45;
}

@media (min-width: 768px) {
    .page-header { padding: 160px 0 100px; }
    .page-title { font-size: 3rem; }
    .desktop-nav { gap: 0.9rem; }
    .desktop-nav a { font-size: 0.8125rem; white-space: nowrap; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
    .blog-card-img { height: 240px; }
    .blog-related-grid { grid-template-columns: 1fr; }
}

@media (min-width: 768px) and (max-width: 1099px) {
    .mobile-toggle { display: block; }
    .desktop-nav { display: none; }
}

@media (min-width: 1100px) {
    .desktop-nav { gap: 1.35rem; }
    .desktop-nav a { font-size: 0.875rem; }
    .blog-grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
}