/* AI KOL Blog - 独立博客样式 */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@700;900&display=swap');

* { font-family: 'Plus Jakarta Sans', -apple-system, system-ui, sans-serif; box-sizing: border-box; margin: 0; padding: 0; }

/* ── 主题变量 ── */
:root {
    --bg: #FAFBFF; --surface: #FFFFFF; --surface-2: #F5F6FA;
    --border: #E5E7EB; --text: #1A1D2E; --text-muted: #6B7194;
    --accent: #1565C0; --accent-rgb: 21,101,192;
    --gradient-accent: linear-gradient(135deg, #1565C0, #FF9900);
}
.theme-dark {
    --bg: #0A0E1A; --surface: #111827; --surface-2: #1A2035;
    --border: #2A3350; --text: #F0F2F8; --text-muted: #8B94B8;
    --accent: #5B9EF5; --accent-rgb: 91,158,245;
    --gradient-accent: linear-gradient(135deg, #5B9EF5, #FFB347);
}
.theme-claude {
    --bg: #FAF6F1; --surface: #FDFAF7; --surface-2: #FBF7F2;
    --border: #E8DDD0; --text: #3D3929; --text-muted: #7A7159;
    --accent: #C8956C; --accent-rgb: 200,149,108;
    --gradient-accent: linear-gradient(135deg, #C8956C, #DEB68A);
}

body { background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ── 导航栏 ── */
.blog-nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.85); backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}
.theme-dark .blog-nav { background: rgba(11,11,15,0.85); }
.theme-claude .blog-nav { background: rgba(250,246,241,0.85); }
.blog-nav-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 0 24px; height: 56px;
    display: flex; align-items: center; justify-content: space-between;
}
.blog-logo { font-weight: 800; font-size: 18px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.blog-logo-icon { width: 32px; height: 32px; border-radius: 10px; background: var(--gradient-accent); display: flex; align-items: center; justify-content: center; color: white; font-size: 16px; }
.blog-nav-links { display: flex; align-items: center; gap: 6px; }
.blog-nav-links a {
    padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 500;
    color: var(--text-muted); transition: all 0.2s;
}
.blog-nav-links a:hover, .blog-nav-links a.active { color: var(--accent); background: rgba(var(--accent-rgb), 0.08); }
.blog-cta-btn {
    padding: 8px 20px; border-radius: 20px; font-size: 13px; font-weight: 600;
    color: white; background: var(--gradient-accent); border: none; cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.blog-cta-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.3); }

/* ── 容器 ── */
.blog-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Hero 特色文章 ── */
.blog-hero { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin: 32px 0; }
.blog-hero-main {
    position: relative; border-radius: 20px; overflow: hidden; min-height: 340px;
    display: flex; flex-direction: column; justify-content: flex-end; padding: 32px;
    cursor: pointer; transition: transform 0.3s;
}
.blog-hero-main:hover { transform: translateY(-2px); }
.blog-hero-main .hero-bg { position: absolute; inset: 0; z-index: 0; }
.blog-hero-main .hero-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%); z-index: 1; }
.blog-hero-main .hero-content { position: relative; z-index: 2; color: white; }
.blog-hero-main .hero-badge { display: inline-block; padding: 4px 12px; border-radius: 12px; font-size: 11px; font-weight: 600; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); margin-bottom: 12px; }
.blog-hero-main .hero-title { font-family: 'Noto Serif SC', serif; font-size: 26px; font-weight: 900; line-height: 1.3; margin-bottom: 8px; }
.blog-hero-main .hero-excerpt { font-size: 14px; opacity: 0.85; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-hero-main .hero-meta { margin-top: 12px; font-size: 12px; opacity: 0.7; display: flex; align-items: center; gap: 12px; }

.blog-hero-side { display: flex; flex-direction: column; gap: 16px; }
.blog-hero-card {
    flex: 1; border-radius: 16px; overflow: hidden; padding: 24px;
    display: flex; flex-direction: column; justify-content: flex-end;
    position: relative; cursor: pointer; transition: transform 0.3s;
}
.blog-hero-card:hover { transform: translateY(-2px); }
.blog-hero-card .hero-bg { position: absolute; inset: 0; z-index: 0; }
.blog-hero-card .hero-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.65), rgba(0,0,0,0.05)); z-index: 1; }
.blog-hero-card .hero-content { position: relative; z-index: 2; color: white; }
.blog-hero-card .hero-badge { display: inline-block; padding: 3px 10px; border-radius: 10px; font-size: 10px; font-weight: 600; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); margin-bottom: 8px; }
.blog-hero-card .hero-title { font-family: 'Noto Serif SC', serif; font-size: 16px; font-weight: 700; line-height: 1.4; }

/* ── 分类导航 ── */
.blog-categories { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0; justify-content: center; }
.blog-cat-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px; border-radius: 24px; font-size: 13px; font-weight: 600;
    background: var(--surface); border: 1px solid var(--border);
    color: var(--text-muted); cursor: pointer; transition: all 0.2s;
}
.blog-cat-pill:hover, .blog-cat-pill.active { color: white; border-color: transparent; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.blog-cat-pill .cat-icon { font-size: 15px; }

/* ── 文章卡片网格 ── */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 24px 0; }
.blog-card {
    background: var(--surface); border-radius: 16px; overflow: hidden;
    border: 1px solid var(--border); transition: all 0.3s;
    cursor: pointer;
}
.blog-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.blog-card-cover { height: 140px; position: relative; overflow: hidden; }
.blog-card-cover .cover-badge {
    position: absolute; top: 12px; left: 12px; z-index: 2;
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px; border-radius: 10px; font-size: 11px; font-weight: 600;
    background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); color: white;
}
.blog-card-body { padding: 16px; }
.blog-card-title {
    font-size: 15px; font-weight: 700; line-height: 1.4; color: var(--text);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    margin-bottom: 8px;
}
.blog-card-excerpt {
    font-size: 13px; color: var(--text-muted); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    margin-bottom: 12px;
}
.blog-card-footer { display: flex; align-items: center; justify-content: space-between; font-size: 11px; color: var(--text-muted); }
.blog-card-footer .card-agent { display: flex; align-items: center; gap: 4px; }

/* ── 分页 ── */
.blog-pagination { display: flex; justify-content: center; align-items: center; gap: 6px; margin: 40px 0; }
.blog-pagination a, .blog-pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 36px; border-radius: 10px; font-size: 13px; font-weight: 500;
    background: var(--surface); border: 1px solid var(--border); color: var(--text-muted);
    transition: all 0.2s;
}
.blog-pagination a:hover { color: var(--accent); border-color: rgba(var(--accent-rgb), 0.3); }
.blog-pagination .active { background: var(--gradient-accent); color: white; border-color: transparent; }

/* ── 文章详情页 ── */
.blog-post-header {
    position: relative; padding: 48px 0 36px; margin-bottom: 32px;
    border-radius: 0 0 24px 24px; overflow: hidden;
}
.blog-post-header .post-header-bg { position: absolute; inset: 0; z-index: 0; }
.blog-post-header .post-header-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.6), rgba(0,0,0,0.15)); z-index: 1; }
.blog-post-header .post-header-content { position: relative; z-index: 2; color: white; max-width: 800px; margin: 0 auto; padding: 0 24px; }
.blog-post-header .post-breadcrumb { font-size: 13px; opacity: 0.7; margin-bottom: 16px; }
.blog-post-header .post-breadcrumb a { color: white; opacity: 0.9; }
.blog-post-header .post-breadcrumb a:hover { opacity: 1; }
.blog-post-title { font-family: 'Noto Serif SC', serif; font-size: 32px; font-weight: 900; line-height: 1.3; margin-bottom: 12px; }
.blog-post-excerpt { font-size: 16px; opacity: 0.85; line-height: 1.6; margin-bottom: 16px; }
.blog-post-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; opacity: 0.7; flex-wrap: wrap; }
.blog-post-meta .meta-agent { display: flex; align-items: center; gap: 6px; }
.blog-post-meta .meta-agent-icon { width: 24px; height: 24px; border-radius: 8px; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-size: 12px; }

/* ── 正文排版 ── */
.blog-prose {
    max-width: 740px; margin: 0 auto; padding: 0 24px;
    font-size: 17px; line-height: 1.85; color: var(--text);
}
.blog-prose h2 {
    font-size: 22px; font-weight: 700; margin: 36px 0 16px;
    padding-bottom: 8px; border-bottom: 2px solid rgba(var(--accent-rgb), 0.15);
    color: var(--text);
}
.blog-prose h3 {
    font-size: 18px; font-weight: 700; margin: 28px 0 12px;
    padding-left: 12px; border-left: 3px solid var(--accent); color: var(--text);
}
.blog-prose p { margin: 14px 0; }
.blog-prose ul, .blog-prose ol { padding-left: 24px; margin: 14px 0; }
.blog-prose li { margin: 6px 0; line-height: 1.75; }
.blog-prose li::marker { color: var(--accent); }
.blog-prose strong { font-weight: 700; color: var(--text); }
.blog-prose em { font-style: italic; }
.blog-prose blockquote {
    border-left: 3px solid var(--accent); background: rgba(var(--accent-rgb), 0.04);
    padding: 14px 20px; margin: 20px 0; border-radius: 0 10px 10px 0;
}
.blog-prose blockquote p { margin: 4px 0; color: var(--text-muted); font-style: italic; }
.blog-prose code { background: rgba(var(--accent-rgb), 0.08); color: var(--accent); padding: 2px 7px; border-radius: 5px; font-size: 0.88em; }
.blog-prose pre { background: var(--surface-2); padding: 16px; border-radius: 10px; overflow-x: auto; margin: 16px 0; border: 1px solid var(--border); }
.blog-prose pre code { background: none; color: var(--text); padding: 0; font-size: 14px; }
.blog-prose a { color: var(--accent); border-bottom: 1px dashed rgba(var(--accent-rgb), 0.3); }
.blog-prose a:hover { border-bottom-style: solid; }
.blog-prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.92em; }
.blog-prose th, .blog-prose td { padding: 10px 14px; border: 1px solid var(--border); text-align: left; }
.blog-prose th { background: rgba(var(--accent-rgb), 0.06); font-weight: 600; }
.blog-prose .blog-faq { margin: 24px 0; }
.blog-prose .blog-faq details {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
    margin: 8px 0; overflow: hidden; transition: all 0.2s;
}
.blog-prose .blog-faq details[open] { border-color: rgba(var(--accent-rgb), 0.3); }
.blog-prose .blog-faq summary {
    padding: 14px 18px; cursor: pointer; list-style: none; font-size: 15px;
    display: flex; align-items: center; gap: 8px;
}
.blog-prose .blog-faq summary::before { content: "Q"; display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 6px; background: var(--accent); color: white; font-size: 12px; font-weight: 700; flex-shrink: 0; }
.blog-prose .blog-faq summary::-webkit-details-marker { display: none; }
.blog-prose .blog-faq details p { padding: 0 18px 14px; margin: 0; color: var(--text-muted); line-height: 1.7; }

/* ── 标签 ── */
.blog-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0; max-width: 740px; margin-left: auto; margin-right: auto; padding: 0 24px; }
.blog-tag {
    padding: 5px 14px; border-radius: 16px; font-size: 12px; font-weight: 500;
    background: rgba(var(--accent-rgb), 0.06); color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb), 0.12);
}

/* ── CTA 横幅 ── */
.blog-cta-banner {
    max-width: 740px; margin: 40px auto; padding: 28px 32px;
    border-radius: 16px; text-align: center;
    background: var(--gradient-accent); color: white;
}
.blog-cta-banner h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.blog-cta-banner p { font-size: 14px; opacity: 0.9; margin-bottom: 16px; }
.blog-cta-banner a {
    display: inline-block; padding: 10px 28px; border-radius: 24px;
    background: white; color: var(--accent); font-weight: 600; font-size: 14px;
    transition: transform 0.2s;
}
.blog-cta-banner a:hover { transform: translateY(-1px); }

/* ── 分享按钮 ── */
.blog-share { display: flex; align-items: center; gap: 10px; justify-content: center; margin: 32px 0; }
.blog-share-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: 20px; font-size: 12px; font-weight: 500;
    background: var(--surface); border: 1px solid var(--border);
    color: var(--text-muted); cursor: pointer; transition: all 0.2s;
}
.blog-share-btn:hover { color: var(--accent); border-color: rgba(var(--accent-rgb), 0.3); }

/* ── Footer ── */
.blog-footer {
    margin-top: 60px; padding: 32px 0; border-top: 1px solid var(--border);
    text-align: center; font-size: 13px; color: var(--text-muted);
}

/* ── 分类 Hero ── */
.blog-category-hero {
    position: relative; padding: 48px 32px; border-radius: 20px; margin: 24px 0;
    overflow: hidden; text-align: center; color: white;
}
.blog-category-hero .cat-hero-bg { position: absolute; inset: 0; z-index: 0; }
.blog-category-hero .cat-hero-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.25); z-index: 1; }
.blog-category-hero .cat-hero-content { position: relative; z-index: 2; }
.blog-category-hero .cat-hero-icon { font-size: 40px; margin-bottom: 8px; }
.blog-category-hero .cat-hero-name { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.blog-category-hero .cat-hero-desc { font-size: 14px; opacity: 0.85; max-width: 500px; margin: 0 auto; }
.blog-category-hero .cat-hero-count { margin-top: 12px; font-size: 13px; opacity: 0.7; }

/* ── 热门文章侧边栏 ── */
.blog-popular-list { margin: 24px 0; }
.blog-popular-item {
    display: flex; gap: 12px; padding: 12px 0;
    border-bottom: 1px solid var(--border); cursor: pointer;
}
.blog-popular-item:last-child { border-bottom: none; }
.blog-popular-rank {
    width: 28px; height: 28px; border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; background: var(--surface-2); color: var(--text-muted);
}
.blog-popular-rank.top { background: var(--gradient-accent); color: white; }
.blog-popular-title { font-size: 13px; font-weight: 500; color: var(--text); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ── 动画 ── */
.blog-fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.5s, transform 0.5s; }
.blog-fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── 响应式 ── */
@media (max-width: 1024px) {
    .blog-hero { grid-template-columns: 1fr; }
    .blog-hero-side { flex-direction: row; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .blog-nav-links { display: none; }
    .blog-hero-main { min-height: 260px; padding: 24px; }
    .blog-hero-main .hero-title { font-size: 20px; }
    .blog-hero-side { flex-direction: column; }
    .blog-hero-card { min-height: 140px; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-post-title { font-size: 24px; }
    .blog-prose { font-size: 16px; }
    .blog-categories { gap: 6px; }
    .blog-cat-pill { padding: 6px 12px; font-size: 12px; }
}

/* ── 主题切换按钮 ── */
.blog-theme-btn {
    width: 36px; height: 36px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text-muted); cursor: pointer; transition: all 0.2s; font-size: 16px;
}
.blog-theme-btn:hover { color: var(--accent); border-color: rgba(var(--accent-rgb), 0.3); }