img.center{
    display: block;
    margin: 1.0rem auto;
    max-width: 100%;
    height: auto;
}

/* 桌面端与移动端复用同一品牌结构，固定头像尺寸以避免图片加载时导航发生位移。 */
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.site-brand__avatar {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border-radius: 50%;
    object-fit: cover;
}

.site-brand__name {
    white-space: nowrap;
}

@media (max-width: 800px) {
    .site-brand__avatar {
        width: 28px;
        height: 28px;
        flex-basis: 28px;
    }
}

/* GitHub 总览保持原始宽高比，并限制最大宽度，避免在宽屏下被拉伸失真。 */
.github-overview {
    display: block;
    width: min(100%, 467px);
    margin: 1.5rem 0 2.5rem;
    border: 0 !important;
}

.github-overview img {
    display: block;
    width: 100%;
    height: auto;
}

.github-profile-link a,
.project-card__github {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.post-content .github-profile-link img,
.post-content .project-card__github img {
    width: 1rem;
    height: 1rem;
    margin: 0;
    background: transparent;
}

/*
 * About 页正文宽度有限，因此采用“一张横向卡片 + 两张常规卡片”的网格。
 * 关注度最高的项目占满首行，为较长的项目介绍和统计数据保留足够空间。
 */
.project-showcase {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.25rem;
}

.project-card {
    --project-accent: #555;
    display: flex;
    min-width: 0;
    min-height: 210px;
    flex-direction: column;
    padding: 1.25rem;
    border: 1px solid #dedede;
    border-top: 3px solid var(--project-accent);
    border-radius: 6px;
    background: #fff;
}

.project-card--featured {
    grid-column: 1 / -1;
    min-height: 190px;
}

.project-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.75rem;
    color: #737373;
    font-size: 0.82rem;
}

.project-card__meta span:first-child {
    color: #666;
}

.post-content .project-card h3 {
    margin: 0.55rem 0 0.7rem;
    font-size: 1.2rem;
    line-height: 1.35;
}

.post-content .project-card h3 a,
.post-content .project-card__footer a {
    color: #333;
    border-bottom-color: #aaa;
}

.post-content .project-card h3 a:hover,
.post-content .project-card__footer a:hover {
    color: var(--project-accent);
    border-bottom-color: var(--project-accent);
}

.project-card p {
    flex: 1;
    margin: 0;
    color: #555;
    font-size: 0.94rem;
    line-height: 1.75;
}

.project-card__footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid #ececec;
    color: #777;
    font-size: 0.82rem;
}

.project-card__links {
    display: flex;
    flex-shrink: 0;
    gap: 0.75rem;
}

.project-showcase__updated {
    margin-top: 0.75rem;
    color: #888;
    font-size: 0.78rem;
    text-align: right;
}

/* 窄屏改为单列，避免项目数据和链接相互挤压。 */
@media (max-width: 680px) {
    .project-showcase {
        grid-template-columns: minmax(0, 1fr);
    }

    .project-card--featured {
        grid-column: auto;
    }

    .project-card,
    .project-card--featured {
        min-height: 0;
    }

    .project-card__footer {
        align-items: flex-start;
        flex-direction: column;
    }
}