/* page-blog-article — 单篇博客，与全站 / 博客列表风格一致，参考长文分节与信息层次 */

/* 与列表页共用的角标名（不引入整份 page-blog.css） */
#blog-article .blg-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.03em;
    white-space: nowrap;
}
#blog-article .blg-badge--openclaw {
    background: linear-gradient(135deg, #2870f8, #1644e8);
    color: #fff;
    box-shadow: 0 2px 10px rgba(26, 85, 232, 0.28);
}
#blog-article .blg-cat {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}
#blog-article .blg-cat--openclaw {
    background: rgba(59, 130, 246, 0.1);
    color: #1d4ed8;
}

#blog-article {
    --ba-max: 700px;
    --ba-ink: #0d1f40;
    --ba-ink-2: rgba(15, 36, 80, 0.62);
    --ba-ink-3: rgba(15, 36, 80, 0.48);
    --ba-line: rgba(200, 220, 245, 0.75);
    --ba-primary: #1a6fff;
}

/* ── 顶区（与 blg-hero 同系：渐变 + 点阵） ── */
.ba-hero {
    background: linear-gradient(170deg, #c2deff 0%, #d8ecff 32%, #eaf4ff 68%, #f4f9ff 100%);
    position: relative;
    overflow: hidden;
}
.ba-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(26, 111, 255, 0.055) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}
.ba-hero::after {
    content: '';
    position: absolute;
    top: -80px; right: -100px;
    width: 420px; height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(120, 190, 255, 0.22) 0%, transparent 65%);
    pointer-events: none;
}
.ba-hero__inner {
    position: relative;
    z-index: 1;
    max-width: 880px;
    margin: 0 auto;
    padding: 48px 24px 40px;
}
.ba-hero__crumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ba-ink-3);
    margin: 0 0 16px;
}
.ba-hero__crumb a {
    color: inherit;
    text-decoration: none;
    transition: color 0.18s;
}
.ba-hero__crumb a:hover { color: var(--ba-primary); }
.ba-hero h1 {
    margin: 0 0 14px;
    font-size: clamp(22px, 3.4vw, 32px);
    font-weight: 860;
    color: var(--ba-ink);
    line-height: 1.28;
    letter-spacing: -0.022em;
}
.ba-hero__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 16px;
    font-size: 12.5px;
    color: var(--ba-ink-3);
    margin: 0 0 20px;
}
.ba-hero__badges { display: flex; flex-wrap: wrap; gap: 8px; }
.ba-hero__badges .blg-badge { margin: 0; }
.ba-hero__lead {
    margin: 0;
    font-size: 15px;
    line-height: 1.75;
    color: var(--ba-ink-2);
}
.ba-hero__lead strong { color: #0a1630; font-weight: 750; }

/* ── 正文栏 ── */
.ba-wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 24px 80px;
}
.ba-prose {
    max-width: var(--ba-max);
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
    color: var(--ba-ink-2);
}
.ba-prose > *:first-child { margin-top: 0; }
.ba-prose p { margin: 0 0 1.1em; }
.ba-prose h2 {
    margin: 2.1em 0 0.65em;
    font-size: 1.28em;
    font-weight: 800;
    color: var(--ba-ink);
    letter-spacing: -0.02em;
    line-height: 1.35;
    padding-top: 0.4em;
    border-top: 1px solid var(--ba-line);
}
.ba-prose h2:first-of-type {
    border-top: none;
    margin-top: 0;
    padding-top: 0;
}
.ba-prose h3 {
    margin: 1.45em 0 0.5em;
    font-size: 1.05em;
    font-weight: 780;
    color: #0d2240;
}
.ba-prose strong { color: #0a1630; font-weight: 700; }
.ba-prose a {
    color: var(--ba-primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.ba-prose a:hover { color: #1240a0; }
.ba-prose ol, .ba-prose ul { margin: 0.6em 0 1em; padding-left: 1.35em; }
.ba-prose li { margin: 0.4em 0; }
.ba-prose li::marker { color: rgba(26, 111, 255, 0.7); }

/* 要点卡 */
.ba-takeaways {
    margin: 1.5em 0 1.75em;
    padding: 18px 20px 18px 22px;
    border-radius: 16px;
    background: rgba(235, 244, 255, 0.75);
    border: 1px solid rgba(26, 111, 255, 0.16);
    box-shadow: 0 2px 14px rgba(15, 27, 50, 0.05);
}
.ba-takeaways h3 {
    margin: 0 0 10px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #1a6fff;
}
.ba-takeaways ol { margin: 0; padding-left: 1.2em; }
.ba-takeaways li { font-size: 14.5px; line-height: 1.65; }

/* 文内目录 */
.ba-toc {
    margin: 0 0 1.35em;
    padding: 16px 18px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(26, 111, 255, 0.18);
    box-shadow: 0 2px 12px rgba(15, 27, 50, 0.04);
}

.ba-toc__title {
    margin: 0 0 10px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #1a6fff;
}

.ba-toc ol {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 6px;
}

@media (min-width: 640px) {
    .ba-toc ol {
        grid-template-columns: 1fr 1fr;
        gap: 6px 20px;
    }
}

.ba-toc a {
    display: block;
    font-size: 14px;
    line-height: 1.45;
    font-weight: 600;
    color: #243b5c;
    text-decoration: none;
    padding: 4px 0;
}

.ba-toc a:hover {
    color: #1a6fff;
}

.ba-toc a:focus-visible {
    outline: 2px solid rgba(26, 111, 255, 0.45);
    outline-offset: 2px;
    border-radius: 4px;
}

/* 文末区块标签 */
.ba-section-label {
    display: inline-block;
    margin: 0 0 10px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #1a6fff;
    background: rgba(26, 111, 255, 0.1);
    border-radius: 6px;
}

.ba-related {
    margin: 2em 0 1.5em;
    padding: 18px 20px;
    border-radius: 14px;
    border: 1px solid var(--ba-line);
    background: rgba(248, 251, 255, 0.9);
}

.ba-related h2 {
    margin-top: 0;
    font-size: 1.15em;
}

.ba-related ul {
    margin-bottom: 0;
}

/* 图（占位，文案由 alt/figcaption 表达） */
.ba-figure {
    margin: 1.5em 0 1.75em;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--ba-line);
    background: linear-gradient(145deg, #e8f1ff 0%, #dceaff 100%);
    box-shadow: 0 4px 20px rgba(15, 27, 50, 0.06);
}
.ba-figure__placeholder {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    text-align: center;
    color: rgba(15, 36, 80, 0.38);
    font-size: 13.5px;
    line-height: 1.6;
    font-style: italic;
    border: none;
    margin: 0;
}
.ba-figure figcaption {
    padding: 10px 16px 12px;
    font-size: 12.5px;
    color: var(--ba-ink-3);
    line-height: 1.5;
    background: rgba(255, 255, 255, 0.6);
    border-top: 1px solid var(--ba-line);
}

/* 正文配图：横幅裁切（覆盖 common.css 的 img { height:auto }） */
#blog-article .ba-figure--compact {
    margin: 0.85em 0 1.1em;
    max-width: none;
}

#blog-article .ba-figure--compact picture {
    display: block;
    position: relative;
    width: 100%;
    height: clamp(140px, 22vw, 200px);
    overflow: hidden;
    line-height: 0;
    background: #1a2744;
}

#blog-article .ba-figure--compact img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    object-position: 50% 38%;
}

#blog-article .ba-figure--compact figcaption {
    padding: 8px 14px 10px;
    font-size: 12px;
}

@media (max-width: 640px) {
    #blog-article .ba-figure--compact picture {
        height: 150px;
    }

    #blog-article .ba-figure--compact img {
        object-position: 45% 35%;
    }
}

/* 表格 */
.ba-table-wrap {
    margin: 1.25em 0 1.5em;
    border-radius: 12px;
    border: 1px solid var(--ba-line);
    overflow-x: auto;
    background: #fff;
    box-shadow: 0 2px 12px rgba(15, 27, 50, 0.04);
}
.ba-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.ba-table th,
.ba-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--ba-line); vertical-align: top; }
.ba-table th { background: rgba(235, 244, 255, 0.9); color: #0d2240; font-weight: 750; }
.ba-table td { color: var(--ba-ink-2); }
.ba-table tr:last-child th,
.ba-table tr:last-child td { border-bottom: none; }
@media (max-width: 560px) {
    .ba-table { font-size: 12.5px; }
    .ba-table th, .ba-table td { padding: 8px 9px; }
}

/* 代码 */
.ba-pre {
    margin: 1.1em 0 1.35em;
    padding: 16px 18px;
    border-radius: 12px;
    background: #0d1528;
    color: #e2e8f0;
    font-family: 'Menlo', 'Monaco', 'Consolas', ui-monospace, monospace;
    font-size: 12.5px;
    line-height: 1.65;
    overflow-x: auto;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.ba-pre code { font-family: inherit; font-size: inherit; }

/* 文末 */
.ba-outro {
    margin-top: 2.2em;
    padding: 18px 20px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--ba-line);
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--ba-ink-2);
}
.ba-outro a { color: var(--ba-primary); font-weight: 700; }

/* 架构拓扑图（本篇） */
#blog-article .ba-figure--diagram {
    margin: 1.35em 0 1.6em;
    border-radius: 14px;
    border: 1px solid var(--ba-line);
    background: linear-gradient(180deg, #f8fbff 0%, #eef4fc 100%);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(15, 27, 50, 0.06);
}
#blog-article .ba-figure--diagram svg {
    display: block;
    width: 100%;
    height: auto;
}
#blog-article .ba-figure--diagram figcaption {
    padding: 10px 16px 12px;
    font-size: 13px;
    color: var(--ba-ink-2);
    border-top: 1px solid var(--ba-line);
    background: rgba(255, 255, 255, 0.65);
}
#blog-article .ba-plain-intro {
    margin: 1.1em 0 1.35em;
    padding: 14px 18px;
    border-radius: 12px;
    border-left: 4px solid var(--ba-primary);
    background: rgba(235, 244, 255, 0.85);
    font-size: 15px;
    line-height: 1.65;
    color: var(--ba-ink-2);
}
#blog-article .ba-plain-intro strong { color: #0d2240; }
#blog-article .ba-snippet-block {
    margin: 0 0 1.25em;
    padding: 16px 20px;
    border-radius: 12px;
    border: 1px solid rgba(13, 34, 64, 0.12);
    background: linear-gradient(135deg, rgba(248, 251, 255, 0.95), rgba(235, 244, 255, 0.75));
}
#blog-article .ba-snippet-block__title {
    margin: 0 0 0.55em;
    font-size: 1.05em;
    font-weight: 750;
    color: #0d2240;
    line-height: 1.4;
}
#blog-article .ba-snippet-block p,
#blog-article .ba-snippet-block ol {
    margin: 0.45em 0 0;
    font-size: 15px;
    line-height: 1.65;
    color: var(--ba-ink-2);
}
#blog-article .ba-snippet-block ol { padding-left: 1.35em; }
#blog-article .ba-eeat {
    margin: 2em 0 1.5em;
    padding: 18px 22px;
    border-radius: 12px;
    border-left: 4px solid #1a5fb4;
    background: rgba(235, 244, 255, 0.55);
}
#blog-article .ba-eeat h2 { margin-top: 0.25em; }
#blog-article .ba-related--cluster .ba-related-cluster {
    margin: 0.75em 0 0;
    padding-left: 1.25em;
    line-height: 1.75;
}
#blog-article .ba-related--cluster .ba-related-cluster li { margin-bottom: 0.35em; }
#blog-article .ba-checklist-metrics td:last-child { font-weight: 650; color: #0d2240; white-space: nowrap; }

@media (max-width: 600px) {
    .ba-hero__inner { padding-top: 40px; padding-bottom: 32px; }
    .ba-prose { font-size: 15px; }
}