/* =========================================
   Blog 专用样式 - 极简阅读风格
   ========================================= */
@import url('https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,300;0,400;0,700;1,400&family=Inter:wght@400;600&display=swap');

:root {
    --blog-bg: #ffffff;
    --blog-text: #2c2c2c;
    --blog-accent: #006C66; /* 保留一点点 MPI 绿作为呼应 */
    --blog-gray: #666;
    --font-serif: 'Merriweather', Georgia, serif; /* 衬线字体，适合长文阅读 */
    --font-sans: 'Inter', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--blog-bg);
    color: var(--blog-text);
    font-family: var(--font-serif);
    line-height: 1.8; /* 更大的行高 */
    font-size: 18px;  /* 更大的字号 */
    -webkit-font-smoothing: antialiased;
}

a { color: var(--blog-text); text-decoration: underline; text-decoration-color: var(--blog-accent); text-decoration-thickness: 2px; transition: all 0.2s; }
a:hover { color: var(--blog-accent); background: rgba(0, 108, 102, 0.05); }

/* 容器：单栏居中，像一本书 */
.blog-container {
    max-width: 720px; /* 经典的阅读宽度 */
    margin: 0 auto;
    padding: 40px 20px;
}

/* 极简导航栏 */
.blog-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    margin-bottom: 60px;
    border-bottom: 1px solid #eee;
    font-family: var(--font-sans); /* 导航用无衬线体 */
}

.blog-brand { font-weight: 700; font-size: 1.2rem; text-decoration: none; color: #000; }
.blog-menu a { margin-left: 20px; font-size: 0.95rem; color: #666; text-decoration: none; }
.blog-menu a:hover { color: #000; }

/* 博客列表页样式 */
.post-item { margin-bottom: 50px; }
.post-meta { font-family: var(--font-sans); font-size: 0.85rem; color: #888; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.post-link { font-size: 1.8rem; font-weight: 700; text-decoration: none; color: #111; display: block; margin-bottom: 10px; line-height: 1.3; }
.post-link:hover { color: var(--blog-accent); background: none; }
.post-excerpt { font-size: 1rem; color: #555; line-height: 1.6; }

/* 文章详情页样式 */
.article-header { margin-bottom: 50px; text-align: center; }
.article-title { font-size: 2.5rem; margin-bottom: 15px; line-height: 1.2; }
.article-date { font-family: var(--font-sans); color: #888; }

.article-content { margin-bottom: 80px; }
.article-content h2 { font-family: var(--font-sans); margin-top: 50px; margin-bottom: 20px; font-size: 1.6rem; }
.article-content p { margin-bottom: 25px; }
.article-content blockquote { border-left: 4px solid var(--blog-accent); padding-left: 20px; margin: 30px 0; font-style: italic; color: #555; }
.article-content pre { background: #f5f5f5; padding: 20px; overflow-x: auto; border-radius: 5px; font-size: 0.9rem; margin: 30px 0; font-family: 'Courier New', monospace; }
.article-content img { max-width: 100%; height: auto; border-radius: 4px; display: block; margin: 30px auto; }