/* ==========================================================================
   API.PLUS 文章中心 / 文章详情 样式
   ========================================================================== */
.ac-page {
    --ac-card: #ffffff;
    --ac-text: #2c3e50;
    --ac-muted: #66707a;
    --ac-border: rgba(0, 0, 0, 0.08);
    --ac-soft: #f2f6fb;
    --ac-primary: #1e88e5;
    --ac-primary-soft: rgba(30, 136, 229, 0.1);
    --ac-radius: 14px;
    --ac-shadow: 0 4px 18px rgba(23, 43, 99, 0.07);
    background: var(--bg-light);
    color: var(--ac-text);
    font-family: var(--font-sans);
    padding-bottom: 72px;
}
body.dark-mode .ac-page {
    --ac-card: var(--card-dark, #1e2233);
    --ac-text: var(--text-primary-dark, #ecf0f1);
    --ac-muted: var(--text-secondary-dark, #b0bec5);
    --ac-border: rgba(255, 255, 255, 0.09);
    --ac-soft: rgba(255, 255, 255, 0.05);
    --ac-shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
    background: var(--bg-dark, #121824);
}
.ac-container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* 顶部 hero */
.ac-hero {
    padding: 34px 0 30px;
    background:
        radial-gradient(1100px 260px at 12% -20%, rgba(30, 136, 229, 0.18), transparent 60%),
        radial-gradient(900px 240px at 88% -30%, rgba(67, 160, 71, 0.14), transparent 60%);
    border-bottom: 1px solid var(--ac-border);
    margin-bottom: 30px;
}
.ac-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ac-muted); margin-bottom: 14px; flex-wrap: wrap; }
.ac-breadcrumb a { color: var(--ac-muted); text-decoration: none; }
.ac-breadcrumb a:hover { color: var(--ac-primary); }
.ac-breadcrumb span.sep { opacity: 0.5; }
.ac-hero h1 { font-size: 30px; font-weight: 800; letter-spacing: 0.5px; margin: 0 0 12px; line-height: 1.25; }
.ac-hero-desc { font-size: 14.5px; color: var(--ac-muted); max-width: 780px; line-height: 1.8; margin: 0; }
.ac-hero-meta { display: flex; gap: 22px; margin-top: 16px; font-size: 13px; color: var(--ac-muted); flex-wrap: wrap; }
.ac-hero-meta strong { color: var(--ac-text); font-size: 15px; }

/* 布局 */
.ac-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; }
@media (max-width: 991px) { .ac-layout { grid-template-columns: 1fr; } }

/* 文章卡片 */
.ac-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(288px, 1fr)); gap: 20px; }
.ac-card {
    background: var(--ac-card);
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    box-shadow: var(--ac-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.ac-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(23, 43, 99, 0.14); }
.ac-cover {
    height: 132px;
    background: linear-gradient(135deg, hsl(var(--h, 210) 72% 56%), hsl(calc(var(--h, 210) + 45) 74% 44%));
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.ac-cover::after {
    content: ""; position: absolute; inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.22) 1.5px, transparent 1.5px);
    background-size: 18px 18px; opacity: 0.55;
}
.ac-cover .ch {
    font-size: 46px; font-weight: 800; color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.18); z-index: 1;
}
.ac-cover .ac-cover-tag {
    position: absolute; left: 12px; top: 12px; z-index: 2;
    background: rgba(255, 255, 255, 0.9); color: #2b4a86;
    font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 999px;
}
.ac-card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.ac-card-title { font-size: 16.5px; font-weight: 700; line-height: 1.5; margin: 0 0 9px; }
.ac-card-title a { color: var(--ac-text); text-decoration: none; }
.ac-card-title a:hover { color: var(--ac-primary); }
.ac-card-excerpt { font-size: 13.2px; color: var(--ac-muted); line-height: 1.75; margin: 0 0 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.ac-card-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; font-size: 12.3px; color: var(--ac-muted); }
.ac-card-foot .ac-more { color: var(--ac-primary); font-weight: 600; text-decoration: none; }
.ac-card-foot .ac-more:hover { text-decoration: underline; }
.ac-views { display: inline-flex; align-items: center; gap: 4px; }

/* 空状态 */
.ac-empty { background: var(--ac-card); border: 1px dashed var(--ac-border); border-radius: var(--ac-radius); padding: 60px 24px; text-align: center; color: var(--ac-muted); font-size: 14px; }

/* 分页 */
.ac-pagination { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 32px; flex-wrap: wrap; }
.ac-pagination a, .ac-pagination span.current, .ac-pagination span.page-info {
    min-width: 40px; height: 40px; padding: 0 12px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 10px; border: 1px solid var(--ac-border);
    background: var(--ac-card); color: var(--ac-text);
    font-size: 13.5px; text-decoration: none;
}
.ac-pagination a:hover { border-color: var(--ac-primary); color: var(--ac-primary); }
.ac-pagination .current { background: var(--ac-primary); border-color: var(--ac-primary); color: #fff; font-weight: 700; }
.ac-pagination .page-info { background: transparent; border: 0; color: var(--ac-muted); }

/* 侧栏 */
.ac-side { display: flex; flex-direction: column; gap: 18px; }
.ac-widget { background: var(--ac-card); border: 1px solid var(--ac-border); border-radius: var(--ac-radius); box-shadow: var(--ac-shadow); padding: 18px; }
.ac-widget h3 { font-size: 14.5px; font-weight: 700; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }
.ac-widget h3::before { content: ""; width: 4px; height: 15px; border-radius: 2px; background: var(--ac-primary); display: inline-block; }
.ac-widget ul { list-style: none; margin: 0; padding: 0; }
.ac-widget li + li { margin-top: 11px; }
.ac-widget li a { color: var(--ac-text); font-size: 13.2px; line-height: 1.55; text-decoration: none; display: block; }
.ac-widget li a:hover { color: var(--ac-primary); }
.ac-widget .ac-count { color: var(--ac-muted); font-size: 11.5px; margin-left: 4px; }
.ac-api-item { display: flex; align-items: flex-start; gap: 10px; }
.ac-api-item .ac-api-icon {
    flex: 0 0 30px; height: 30px; border-radius: 8px;
    background: var(--ac-primary-soft); color: var(--ac-primary);
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;
}
.ac-api-item .ac-api-txt a { font-weight: 600; }
.ac-api-item .ac-api-txt p { margin: 2px 0 0; font-size: 11.8px; color: var(--ac-muted); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.ac-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.ac-tag {
    font-size: 12.2px; padding: 4px 11px; border-radius: 999px;
    background: var(--ac-soft); color: var(--ac-muted); text-decoration: none;
    border: 1px solid transparent;
}
.ac-tag:hover { background: var(--ac-primary-soft); color: var(--ac-primary); }
.ac-cta { background: linear-gradient(135deg, #1e88e5, #1565c0); border: 0; color: #fff; }
.ac-cta h3 { color: #fff; }
.ac-cta h3::before { background: rgba(255, 255, 255, 0.85); }
.ac-cta p { font-size: 13px; line-height: 1.75; color: rgba(255, 255, 255, 0.92); margin: 0 0 14px; }
.ac-cta .ac-btn {
    display: inline-block; background: #fff; color: #1565c0; font-weight: 700;
    font-size: 13px; padding: 9px 16px; border-radius: 9px; text-decoration: none;
}
.ac-cta .ac-btn:hover { background: rgba(255, 255, 255, 0.9); }

/* ============================ 文章详情 ============================ */
.ac-article { background: var(--ac-card); border: 1px solid var(--ac-border); border-radius: var(--ac-radius); box-shadow: var(--ac-shadow); padding: 34px 40px 40px; }
@media (max-width: 767px) { .ac-article { padding: 22px 18px 26px; } }
.ac-article-head { border-bottom: 1px solid var(--ac-border); padding-bottom: 20px; margin-bottom: 26px; }
.ac-article-cat { display: inline-block; font-size: 12px; font-weight: 700; color: var(--ac-primary); background: var(--ac-primary-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 14px; }
.ac-article-title { font-size: 30px; font-weight: 800; line-height: 1.35; margin: 0 0 16px; letter-spacing: 0.3px; }
@media (max-width: 767px) { .ac-article-title { font-size: 23px; } }
.ac-article-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13px; color: var(--ac-muted); align-items: center; }
.ac-article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: 0.5; }
.ac-article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.ac-article-tags a { font-size: 12px; color: var(--ac-muted); background: var(--ac-soft); border-radius: 999px; padding: 3px 11px; text-decoration: none; }
.ac-article-tags a:hover { color: var(--ac-primary); }

/* 正文排版 */
.ac-prose { font-size: 15.5px; line-height: 1.95; color: var(--ac-text); word-break: break-word; }
.ac-prose > *:first-child { margin-top: 0; }
.ac-prose h2 { font-size: 22px; font-weight: 800; line-height: 1.45; margin: 38px 0 16px; padding-left: 13px; border-left: 4px solid var(--ac-primary); }
.ac-prose h3 { font-size: 18px; font-weight: 700; margin: 28px 0 12px; }
.ac-prose h4 { font-size: 16px; font-weight: 700; margin: 22px 0 10px; }
.ac-prose p { margin: 0 0 16px; }
.ac-prose ul, .ac-prose ol { margin: 0 0 18px; padding-left: 24px; }
.ac-prose li { margin-bottom: 8px; }
.ac-prose a { color: var(--ac-primary); text-decoration: none; border-bottom: 1px dashed rgba(30, 136, 229, 0.45); }
.ac-prose a:hover { border-bottom-style: solid; }
.ac-prose strong { font-weight: 700; }
.ac-prose blockquote {
    margin: 20px 0; padding: 14px 18px; border-left: 4px solid var(--ac-primary);
    background: var(--ac-soft); border-radius: 0 10px 10px 0; color: var(--ac-muted);
}
.ac-prose img { max-width: 100%; height: auto; border-radius: 10px; }
.ac-prose code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 0.88em; background: var(--ac-soft); color: #d63384;
    padding: 2px 6px; border-radius: 5px; word-break: break-word;
}
.ac-prose pre {
    background: #101624; color: #e6edf3; border-radius: 12px;
    padding: 18px 20px; overflow-x: auto; margin: 0 0 22px; line-height: 1.7;
}
.ac-prose pre code { background: transparent; color: inherit; padding: 0; font-size: 13.2px; }
.ac-prose table { width: 100%; border-collapse: collapse; margin: 0 0 22px; font-size: 14px; }
.ac-prose th, .ac-prose td { border: 1px solid var(--ac-border); padding: 10px 13px; text-align: left; }
.ac-prose th { background: var(--ac-soft); font-weight: 700; }
.ac-prose hr { border: 0; border-top: 1px solid var(--ac-border); margin: 28px 0; }

/* 上一篇/下一篇 */
.ac-siblings { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 22px; }
@media (max-width: 767px) { .ac-siblings { grid-template-columns: 1fr; } }
.ac-sibling {
    background: var(--ac-card); border: 1px solid var(--ac-border); border-radius: var(--ac-radius);
    padding: 16px 18px; text-decoration: none; display: block; box-shadow: var(--ac-shadow);
}
.ac-sibling small { display: block; font-size: 12px; color: var(--ac-muted); margin-bottom: 6px; }
.ac-sibling span { font-size: 13.8px; font-weight: 600; color: var(--ac-text); line-height: 1.55; display: block; }
.ac-sibling:hover span { color: var(--ac-primary); }
.ac-sibling.next { text-align: right; }

/* 相关文章 */
.ac-related { margin-top: 34px; }
.ac-related > h2 { font-size: 19px; font-weight: 800; margin: 0 0 18px; }
.ac-related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 991px) { .ac-related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575px) { .ac-related-grid { grid-template-columns: 1fr; } }

/* 分享/收藏条 */
.ac-actions { display: flex; align-items: center; gap: 10px; margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--ac-border); flex-wrap: wrap; }
.ac-actions .ac-like-hint { font-size: 13px; color: var(--ac-muted); }
.ac-mini-btn {
    border: 1px solid var(--ac-border); background: var(--ac-soft); color: var(--ac-muted);
    border-radius: 9px; padding: 8px 14px; font-size: 13px; cursor: pointer; text-decoration: none;
    display: inline-flex; align-items: center; gap: 6px;
}
.ac-mini-btn:hover { border-color: var(--ac-primary); color: var(--ac-primary); }

/* ==========================================================================
   移动端优化（<=991px / <=767px / <=400px）
   目标：文章中心列表与详情页在小屏上排版更紧凑、字号更舒适、
        代码块 / 表格不再把移动端视口撑宽（此前长代码行会把 390px 视口撑到 ~588px）。
   ========================================================================== */

.ac-hero-kicker {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .4px;
    color: var(--ac-muted, #8a8f99);
}

@media (max-width: 991px) {
    .ac-container { padding: 0 18px; }
}

@media (max-width: 767px) {
    .ac-container { padding: 0 15px; }
    .ac-page { padding-bottom: 48px; }

    /* 顶部 hero */
    .ac-hero { padding: 22px 0 20px; margin-bottom: 20px; }
    .ac-breadcrumb { font-size: 12px; gap: 6px; margin-bottom: 10px; }
    .ac-breadcrumb span:last-child {
        max-width: 58vw; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .ac-hero h1 { font-size: 24px; line-height: 1.3; margin-bottom: 10px; }
    .ac-hero-desc { font-size: 13.5px; line-height: 1.75; }
    .ac-hero-meta { gap: 14px; margin-top: 12px; font-size: 12.5px; }
    .ac-hero-meta strong { font-size: 14px; }
    .ac-hero-kicker { font-size: 13px; }
    .ac-hero--article { padding: 16px 0 14px; margin-bottom: 18px; }
    .ac-hero--article .ac-hero-kicker { display: none; }

    /* 文章列表卡片 */
    .ac-grid { grid-template-columns: 1fr; gap: 16px; }
    .ac-cover { height: 126px; }
    .ac-card-body { padding: 14px 15px 16px; }
    .ac-card-title { font-size: 16.5px; line-height: 1.5; margin-bottom: 8px; }
    .ac-card-excerpt { font-size: 13px; line-height: 1.7; margin-bottom: 12px; -webkit-line-clamp: 3; }
    .ac-card-foot { font-size: 12px; flex-wrap: wrap; gap: 6px 10px; }

    /* 分页 */
    .ac-pagination { gap: 6px; margin-top: 24px; }
    .ac-pagination a,
    .ac-pagination span.current,
    .ac-pagination span.page-info {
        min-width: 36px; height: 36px; padding: 0 10px;
        font-size: 13px; border-radius: 9px;
    }
    .ac-pagination .page-info { min-width: 0; }

    /* 侧栏 */
    .ac-side { gap: 14px; }
    .ac-widget { padding: 15px 16px; }
    .ac-widget h3 { font-size: 14px; margin-bottom: 12px; }
    .ac-widget li a { font-size: 13px; }
    .ac-widget li + li { margin-top: 9px; }
    .ac-api-item .ac-api-txt p { -webkit-line-clamp: 2; }

    /* 文章详情 */
    .ac-article { padding: 18px 15px 22px; border-radius: 12px; }
    .ac-article-head { padding-bottom: 16px; margin-bottom: 20px; }
    .ac-article-cat { font-size: 11.5px; padding: 3px 10px; margin-bottom: 10px; }
    .ac-article-title { font-size: 21px; line-height: 1.42; margin-bottom: 12px; }
    .ac-article-meta { gap: 8px 12px; font-size: 12px; }
    .ac-article-tags { gap: 6px; margin-top: 10px; }
    .ac-article-tags a, .ac-article-tags span { font-size: 11.5px; padding: 3px 9px; }

    /* 正文排版 */
    .ac-prose { font-size: 15.5px; line-height: 1.9; }
    .ac-prose h2 { font-size: 19px; margin: 28px 0 12px; padding-left: 10px; border-left-width: 3px; }
    .ac-prose h3 { font-size: 17px; margin: 22px 0 10px; }
    .ac-prose h4 { font-size: 15.5px; margin: 18px 0 8px; }
    .ac-prose p { margin-bottom: 14px; }
    .ac-prose ul, .ac-prose ol { padding-left: 20px; margin-bottom: 15px; }
    .ac-prose li { margin-bottom: 6px; }
    .ac-prose blockquote { padding: 12px 14px; margin: 16px 0; }

    /* 关键：代码块允许换行，避免长行把移动端布局视口撑宽（此前 390 -> 588） */
    .ac-prose pre {
        padding: 14px 15px; margin-bottom: 18px;
        white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word;
        -webkit-overflow-scrolling: touch;
    }
    .ac-prose pre code {
        white-space: pre-wrap; word-break: break-all;
        font-size: 12.8px; line-height: 1.65;
    }
    .ac-prose code { font-size: 0.85em; padding: 2px 5px; }

    /* 表格：横向滚动，不撑宽页面 */
    .ac-prose table {
        display: block; width: 100%; max-width: 100%;
        overflow-x: auto; -webkit-overflow-scrolling: touch;
        font-size: 13px;
    }
    .ac-prose th, .ac-prose td { padding: 8px 10px; white-space: nowrap; }
    .ac-prose img { border-radius: 8px; }

    /* 上一篇 / 下一篇 */
    .ac-siblings { gap: 12px; margin-top: 18px; }
    .ac-sibling { padding: 14px 15px; }
    .ac-sibling.next { text-align: left; }

    /* 相关文章 */
    .ac-related { margin-top: 26px; }
    .ac-related > h2 { font-size: 17px; margin-bottom: 14px; }
    .ac-related-grid { gap: 12px; }
    .ac-related .ac-card-title { font-size: 14.5px; }

    /* 操作条 */
    .ac-actions { gap: 8px; margin-top: 20px; padding-top: 16px; }
    .ac-actions .ac-like-hint { font-size: 12.5px; line-height: 1.6; }
    .ac-mini-btn { padding: 8px 12px; font-size: 12.5px; }
}

@media (max-width: 400px) {
    .ac-hero h1 { font-size: 22px; }
    .ac-article-title { font-size: 19.5px; }
    .ac-card-title { font-size: 16px; }
    .ac-prose { font-size: 15px; }
    .ac-prose pre code { font-size: 12.4px; }
}

/* 小屏横屏 / 平板竖屏：卡片两列，避免单列过长 */
@media (min-width: 576px) and (max-width: 767px) {
    .ac-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ac-card-title { font-size: 15.5px; }
}

/* ==========================================================================
   移动端修复补充（2026-10-29 #2）：网格子项允许收缩
   原因：文章正文中的宽表格/长代码会把网格列（min-content）撑宽，
        导致移动端布局视口从 390px 扩到 ~539px（页面被整体缩放）。
   方案：grid 子项 min-width:0 + 单列时 minmax(0,1fr)，超宽内容在自身内部横向滚动。
   ========================================================================== */
.ac-layout > * { min-width: 0; }

@media (max-width: 991px) {
    .ac-layout { grid-template-columns: minmax(0, 1fr); }
}

/* ===== GEO / AI SEO blocks (added 2026-10-30) ===== */
.ac-answer {
    margin: 22px 0 6px;
    padding: 16px 18px;
    border-radius: 12px;
    background: rgba(56, 132, 255, .08);
    border: 1px solid rgba(56, 132, 255, .28);
    border-left: 4px solid #3884ff;
}
.ac-answer-label {
    display: inline-block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .5px;
    color: #2f6fe0;
}
.ac-answer p {
    margin: 0;
    font-size: 15.5px;
    line-height: 1.75;
}

.ac-tldr {
    margin: 20px 0 26px;
    padding: 16px 18px;
    border-radius: 12px;
    border: 1px dashed #e5e8ef;
    background: #f7f8fb;
}
.ac-tldr-head {
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 15px;
}
.ac-tldr-head small {
    color: #8a8f99;
    font-weight: 500;
    margin-left: 6px;
}
.ac-tldr ul {
    margin: 0;
    padding-left: 20px;
}
.ac-tldr li {
    margin: 6px 0;
    line-height: 1.7;
}

.ac-faq {
    margin: 30px 0 10px;
}
.ac-faq h2 {
    font-size: 21px;
    margin: 0 0 14px;
    padding-left: 10px;
    border-left: 3px solid #3884ff;
}
.ac-faq-item {
    border: 1px solid #e5e8ef;
    border-radius: 10px;
    margin-bottom: 10px;
    background: #fff;
    overflow: hidden;
}
.ac-faq-item summary {
    cursor: pointer;
    padding: 13px 16px;
    font-weight: 600;
    font-size: 15px;
    list-style: none;
    position: relative;
    padding-right: 38px;
}
.ac-faq-item summary::-webkit-details-marker { display: none; }
.ac-faq-item summary::after {
    content: "+";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #8a8f99;
    font-weight: 400;
    font-size: 18px;
    line-height: 1;
}
.ac-faq-item[open] summary::after { content: "\2212"; }
.ac-faq-a {
    padding: 0 16px 14px;
    line-height: 1.8;
    color: #4b5563;
    font-size: 15px;
}

body.dark-mode .ac-answer {
    background: rgba(56, 132, 255, .12);
    border-color: rgba(56, 132, 255, .35);
}
body.dark-mode .ac-answer-label { color: #6ea8ff; }
body.dark-mode .ac-tldr {
    background: rgba(255, 255, 255, .03);
    border-color: rgba(255, 255, 255, .12);
}
body.dark-mode .ac-faq-item {
    background: #111827;
    border-color: rgba(255, 255, 255, .12);
}
body.dark-mode .ac-faq-a { color: #c3c9d4; }

@media (max-width: 767px) {
    .ac-answer { padding: 13px 14px; margin: 16px 0 4px; border-radius: 10px; }
    .ac-answer p { font-size: 14.5px; }
    .ac-tldr { padding: 13px 14px; margin: 16px 0 20px; }
    .ac-tldr-head { font-size: 14px; }
    .ac-tldr li { font-size: 14px; line-height: 1.65; }
    .ac-faq h2 { font-size: 18px; }
    .ac-faq-item summary { padding: 11px 13px; padding-right: 34px; font-size: 14px; }
    .ac-faq-a { padding: 0 13px 12px; font-size: 14px; }
}


/* GEO: 参考来源 */
.ac-sources { margin: 26px 0 6px; padding: 16px 18px; background: #f7f9fc; border: 1px dashed #dbe3ef; border-radius: 12px; }
.ac-sources h2 { font-size: 16px; margin: 0 0 10px; }
.ac-sources ol { margin: 0; padding-left: 20px; }
.ac-sources li { font-size: 13.5px; line-height: 1.75; color: #4b5563; word-break: break-word; }
.ac-sources a { color: #2f6fed; text-decoration: none; }
.ac-sources a:hover { text-decoration: underline; }
.ac-sources-note { margin: 8px 0 0; font-size: 12px; color: #8a93a3; }
body.dark-mode .ac-sources { background: rgba(255, 255, 255, .03); border-color: rgba(255, 255, 255, .12); }
body.dark-mode .ac-sources li { color: #c3c9d4; }
@media (max-width: 767px) { .ac-sources { padding: 13px 14px; } .ac-sources li { font-size: 13px; } }


/* ---- GEO v2：引用角标 / 配套阅读 / 关于作者 ---- */
.ac-cite { font-size: .78em; vertical-align: super; line-height: 0; margin-left: 1px; }
.ac-cite a { color: #4f7cff; text-decoration: none; font-weight: 700; }
.ac-cluster { margin: 18px 0 6px; padding: 14px 16px; border: 1px dashed #d8e2f5; border-radius: 12px; background: #f7faff; font-size: 13.5px; line-height: 1.8; color: #475467; }
.ac-cluster-label { display: inline-block; margin-right: 8px; padding: 2px 8px; border-radius: 999px; background: #e8f0ff; color: #3563e9; font-size: 12px; font-weight: 700; }
.ac-cluster a { color: #3563e9; text-decoration: none; font-weight: 600; }
.ac-cluster a:hover { text-decoration: underline; }
.ac-author { display: flex; gap: 14px; margin: 26px 0 8px; padding: 18px 20px; border: 1px solid #e6ecf7; border-radius: 14px; background: #fbfcff; }
.ac-author-avatar { flex: 0 0 46px; width: 46px; height: 46px; border-radius: 50%; background: #e8f0ff; color: #3563e9; display: flex; align-items: center; justify-content: center; font-size: 20px; }
.ac-author-body h2 { font-size: 15px; margin: 0 0 6px; }
.ac-author-body p { margin: 0 0 6px; font-size: 13px; line-height: 1.75; color: #475467; }
.ac-author-meta { color: #8a93a3 !important; font-size: 12.5px !important; }
body.dark-mode .ac-cluster { background: #131b2c; border-color: #26334d; color: #a9b4c8; }
body.dark-mode .ac-author { background: #111827; border-color: #233047; }
body.dark-mode .ac-author-body p { color: #a9b4c8; }
@media (max-width: 767px) {
  .ac-author { flex-direction: column; padding: 16px; }
  .ac-cluster { font-size: 13px; }
}

/* 文章标签筛选（2026-10-30） */
.ac-tag em { font-style: normal; font-size: 11px; color: var(--ac-muted); margin-left: 4px; }
.ac-tag.active { background: var(--ac-primary); color: #fff; border-color: var(--ac-primary); }
.ac-tag.active em { color: rgba(255,255,255,.82); }
.ac-filter-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 16px; font-size: 13.5px; color: var(--ac-muted); }
.ac-filter-clear { color: var(--ac-primary); text-decoration: none; }
.ac-filter-clear:hover { text-decoration: underline; }

/* 列表/相关文章的 OG 图封面 */
.ac-cover.has-img::after { background-image: none; }
.ac-cover-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.ac-cover.has-img .ac-cover-tag { display: none; }

/* 正文配图与图注 */
.ac-prose figure { margin: 20px 0; }
.ac-prose figure img { max-width: 100%; height: auto; border-radius: 12px; display: block; }
.ac-prose figcaption { margin-top: 8px; font-size: 12.5px; color: var(--ac-muted); text-align: center; line-height: 1.6; }

.ac-related-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:-4px 0 16px;font-size:13px;color:var(--ac-muted)}
.ac-related-tags a.ac-tag{text-decoration:none;font-size:12.5px;padding:3px 11px}
.ac-article-cat{text-decoration:none;display:inline-block}
.ac-article-cat:hover{background:var(--ac-primary-soft);color:var(--ac-primary)}

.ac-tagmore{background:var(--ac-soft);border-radius:14px;padding:18px 20px;margin:26px 0}
.ac-tagmore h2{font-size:16px;margin:0 0 12px}
.ac-tagmore h2 a{color:var(--ac-primary);text-decoration:none}
.ac-tagmore ul{list-style:none;margin:0;padding:0}
.ac-tagmore li{display:flex;justify-content:space-between;gap:14px;padding:7px 0;border-bottom:1px dashed var(--ac-border)}
.ac-tagmore li:last-child{border-bottom:0}
.ac-tagmore li a{color:var(--ac-text);text-decoration:none;font-size:14px;line-height:1.5}
.ac-tagmore li a:hover{color:var(--ac-primary)}
.ac-tagmore li span{color:var(--ac-muted);font-size:12px;white-space:nowrap}