/* ========== 文章页面 独有样式 ========== */
/* 面包屑 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 20px 0;
    color: #7f8c9f;
    font-size: 0.9rem;
}
.breadcrumb a {
    color: #4e5e73;
    transition: color 0.2s;
}
.breadcrumb a:hover {
    color: #C6A43F;
}
.breadcrumb i {
    font-size: 0.7rem;
    color: #C6A43F;
}

/* 文章主体 */
.article-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}
.article-header {
    margin-bottom: 40px;
    text-align: center;
}
.article-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #0A2540;
    line-height: 1.3;
    margin-bottom: 20px;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: #7f8c9f;
    font-size: 1rem;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.article-meta span i {
    color: #C6A43F;
    margin-right: 6px;
}
.article-featured-image {
    margin-bottom: 40px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 15px 30px -10px rgba(0,0,0,0.1);
}
.article-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}
/* 文章内容样式 */
.article-content {
    font-size: 1rem;
    color: #2c3e4f;
}
.article-content h2 {
    font-size: 1.6rem;
    font-weight: 600;
    color: #0A2540;
    margin: 48px 0 24px;
    border-left: 6px solid #C6A43F;
    padding-left: 20px;
}
.article-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e3a5f;
    margin: 40px 0 20px;
}
.article-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0A2540;
    margin: 32px 0 16px;
}
.article-content h5 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e2b3c;
    margin: 24px 0 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.article-content p {
    margin-bottom: 24px;
    line-height: 1.8;
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    margin: 32px 0;
    display: block;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}
/* 上下篇导航 */
.post-navigation {
    display: flex;
    justify-content: space-between;
    margin: 60px 0 40px;
    padding: 30px 0;
    border-top: 1px solid #eef2f6;
    border-bottom: 1px solid #eef2f6;
}
.nav-prev, .nav-next {
    max-width: 45%;
}
.nav-prev a, .nav-next a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #1e2b3c;
    transition: color 0.2s;
}
.nav-prev a:hover, .nav-next a:hover {
    color: #C6A43F;
}
.nav-label {
    font-size: 0.9rem;
    color: #7f8c9f;
    margin-bottom: 6px;
}
.nav-title {
    font-weight: 600;
    font-size: 1.1rem;
}
.nav-next {
    text-align: right;
}
.nav-next a {
    flex-direction: row-reverse;
}

/* 相关文章 */
.related-articles {
    margin-top: 60px;
}
.related-articles h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #0A2540;
    margin-bottom: 30px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
@media (max-width: 900px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .related-grid { grid-template-columns: 1fr; }
}
.related-item {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #eef2f6;
    transition: 0.3s;
}
.related-item:hover {
    box-shadow: 0 15px 25px -8px rgba(198,164,63,0.15);
    transform: translateY(-4px);
}
.related-item img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}
.related-content {
    padding: 20px;
}
.related-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.related-content h4 a {
    color: #0A2540;
    transition: color 0.2s;
}
.related-content h4 a:hover {
    color: #C6A43F;
}
.related-meta {
    font-size: 0.85rem;
    color: #7f8c9f;
    display: flex;
    gap: 16px;
}
.related-meta i {
    color: #C6A43F;
    margin-right: 4px;
}

/* ===== 新增：解决固定导航栏遮挡问题 ===== */
@media (min-width: 993px) {
    main {
        padding-top: 76px; /* 与 .site-header 高度一致 */
    }
}

@media (max-width: 992px) {
    main {
        padding-top: 0;
    }
}