/* ============================================
   Blog Pages — Devenir Theme
   Styles: unified post stream, detail, post_form,
           revision timeline, diff viewer, comments
   ============================================ */

/* ===== Post Stream — Devenir 风格思想流 ===== */
/* 数据契约：post_list / page_obj / paginator / is_paginated */
/* 概念：编号节点 + 数据总线 + 非对称排列，替代机械重复卡片 */

.post-card-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
}

/* ===== System Status Rail ===== */
.system-rail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--fragment-border);
    margin-bottom: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-tertiary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.system-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.system-item {
    opacity: 0.7;
}

.system-status {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--accent); }
    50% { opacity: 0.5; box-shadow: 0 0 1px var(--accent); }
}

.status-text {
    color: var(--accent-muted);
}

/* ===== Command Filter Rail ===== */
.post-browser {
    position: relative;
    transition: opacity 160ms ease;
}

.post-browser.htmx-swapping {
    opacity: 0.32;
}

.post-browser-sync {
    position: absolute;
    top: -1.4rem;
    right: 0;
    z-index: 2;
    color: var(--accent-muted);
    font: 0.65rem var(--font-mono);
    letter-spacing: 0.12em;
    pointer-events: none;
}

.command-rail {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--fragment-border);
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    flex-wrap: wrap;
}

.command-prompt {
    color: var(--accent);
    font-weight: 600;
    white-space: nowrap;
}

.prompt-user {
    color: var(--accent-soft);
}

.prompt-symbol {
    color: var(--accent-muted);
}

.command-filters {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.15rem 0.4rem;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.filter-link:hover {
    color: var(--accent);
    border-color: var(--accent-deep);
}

.filter-link.active {
    color: var(--accent);
    border-color: var(--accent-deep);
    background: rgba(62, 88, 72, 0.2);
}

.filter-sep {
    color: var(--text-tertiary);
    opacity: 0.4;
}

/* Command Search — 搜索框在 filter rail 内 */
.command-search {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: auto;
    background: var(--bg-elevated);
    border: 1px solid var(--fragment-border);
    padding: 0.3rem 0.6rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.command-search:focus-within {
    border-color: var(--accent-soft);
    box-shadow: 0 0 12px rgba(216, 255, 225, 0.08);
}

.search-prefix {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.75rem;
}

.search-input {
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    width: 140px;
    padding: 0.2rem 0;
    transition: width 0.3s ease;
}

.search-input:focus {
    outline: none;
    width: 200px;
}

.search-input::placeholder {
    color: var(--text-tertiary);
    opacity: 0.6;
}

.search-btn {
    background: transparent;
    border: none;
    color: var(--accent-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.1rem 0.3rem;
    transition: color 0.2s;
}

.search-btn:hover {
    color: var(--accent);
}

.stream-query {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin: -0.4rem 0 1rem;
    color: var(--text-tertiary);
    font: 0.72rem var(--font-mono);
    letter-spacing: 0.06em;
}

.stream-query-label {
    color: var(--accent-muted);
}

.stream-query-value {
    color: var(--text-secondary);
    overflow-wrap: anywhere;
}

/* ===== Stream Header ===== */
.stream-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--fragment-border);
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    letter-spacing: 0.05em;
}

.stream-meta {
    display: flex;
    gap: 2rem;
}

.stream-label {
    color: var(--accent-muted);
}

.stream-cursor {
    color: var(--text-secondary);
}

.stream-nav-hint {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.stream-nav-link {
    color: var(--accent-soft);
    text-decoration: none;
    transition: color 0.2s;
}

.stream-nav-link:hover {
    color: var(--accent);
}

.stream-nav-link.disabled {
    color: var(--text-tertiary);
    opacity: 0.4;
    pointer-events: none;
}

.stream-nav-sep {
    color: var(--text-tertiary);
    opacity: 0.5;
}

/* Post Stream — 节点流 */
.post-stream {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    position: relative;
}

/* 数据总线 — 左侧纵向轨道 */
.post-stream::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--fragment-border) 5%,
        var(--fragment-border) 95%,
        transparent 100%
    );
    pointer-events: none;
}

/* Stream Node — 单个文章节点 */
.stream-node {
    display: grid;
    grid-template-columns: 80px 200px 1fr auto;
    gap: 1.5rem;
    align-items: start;
    position: relative;
    padding-left: 60px;
}

/* 交替布局：偶数节点镜像（glitch | content | artifact | rail）
   文字紧贴封面右侧，封面紧贴右侧编号 */
.stream-node--reverse {
    grid-template-columns: auto 1fr 200px 80px;
    padding-left: 0;
    padding-right: 60px;
}

.stream-node--reverse .node-rail {
    order: 4;
    text-align: right;
}

.stream-node--reverse .node-artifact {
    order: 3;
}

.stream-node--reverse .node-content {
    order: 2;
    text-align: right;
    align-items: flex-end;
}

.stream-node--reverse .node-glitch-markers {
    order: 1;
}

/* Node Rail — 编号与分类 */
.node-rail {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    position: relative;
    z-index: 1;
}

.node-number {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    letter-spacing: -0.02em;
}

.node-category {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* 分类信号色 — 按 data-category 区分 */
.stream-node[data-category="skateboard"] .node-category,
.stream-node[data-category="skateboard"] .node-number {
    color: #4ed7af;
}
.stream-node[data-category="skateboard"] .node-connector {
    background: #4ed7af;
    opacity: 0.4;
}

.stream-node[data-category="music"] .node-category,
.stream-node[data-category="music"] .node-number {
    color: #b794f4;
}
.stream-node[data-category="music"] .node-connector {
    background: #b794f4;
    opacity: 0.4;
}

.stream-node[data-category="coding"] .node-category,
.stream-node[data-category="coding"] .node-number {
    color: #f6ad55;
}
.stream-node[data-category="coding"] .node-connector {
    background: #f6ad55;
    opacity: 0.4;
}

/* 节点连接线 */
.node-connector {
    position: absolute;
    left: -20px;
    top: 1rem;
    width: 20px;
    height: 1px;
    background: var(--fragment-border);
}

.stream-node--reverse .node-connector {
    left: auto;
    right: -20px;
}

/* Node Artifact — 封面容器 */
.node-artifact {
    position: relative;
    width: 200px;
    height: 140px;
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--fragment-border);
    text-decoration: none;
    display: block;
    transition: border-color 0.3s, box-shadow 0.3s;
}

/* 封面与内容之间的连接线 — 分类差异化 */
.node-artifact::after {
    content: '';
    position: absolute;
    right: -1.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.5rem;
    height: 1px;
    background: var(--fragment-border);
    transition: background 0.3s;
}

.stream-node--reverse .node-artifact::after {
    right: auto;
    left: -1.5rem;
}

/* 分类差异化连接线 */
.stream-node[data-category="skateboard"] .node-artifact::after {
    background: #4ed7af;
    opacity: 0.5;
}
.stream-node[data-category="music"] .node-artifact::after {
    background: #b794f4;
    opacity: 0.5;
}
.stream-node[data-category="coding"] .node-artifact::after {
    background: #f6ad55;
    opacity: 0.5;
}

.node-artifact:hover {
    border-color: var(--fragment-highlight);
    box-shadow: 0 0 20px var(--fragment-highlight);
}

.node-artifact img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 封面扫描线效果 */
.artifact-scanline {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(216, 255, 225, 0.03) 2px,
        rgba(216, 255, 225, 0.03) 4px
    );
    pointer-events: none;
}

/* Node Content — 标题/摘要/元数据 */
.node-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-width: 0;
}

.node-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    margin: 0;
}

.node-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.node-title a:hover {
    color: var(--accent);
}

.node-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.node-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    flex-wrap: wrap;
}

.stream-node--reverse .node-meta {
    justify-content: flex-end;
}

.meta-author {
    color: var(--accent-soft);
}

.meta-sep {
    opacity: 0.4;
}

.meta-views {
    color: var(--text-muted);
}

.meta-edit {
    color: var(--accent-muted);
    text-decoration: none;
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--border);
    font-size: 0.65rem;
    transition: all 0.2s;
}

.meta-edit:hover {
    border-color: var(--accent-soft);
    color: var(--accent);
}

/* Glitch Markers — 装饰性标记 */
.node-glitch-markers {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-tertiary);
    opacity: 0.4;
    padding-top: 0.5rem;
}

.glitch-marker {
    transition: opacity 0.2s, color 0.2s;
}

.stream-node:hover .glitch-marker {
    opacity: 0.8;
    color: var(--accent-muted);
}

/* Stream Footer — 分页 */
.stream-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--fragment-border);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    border: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.pagination a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination .current {
    border-color: var(--accent);
    background: var(--accent-deep);
    color: var(--accent);
    font-weight: 600;
}

.pagination .disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}
.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}
.empty-state .empty-text {
    font-size: 1.1rem;
    font-family: var(--font-mono);
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
}

/* ===== Post Detail ===== */
.post-detail {
    max-width: 800px;
    margin: 0 auto;
}

.post-detail-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.post-detail-title {
    font-family: 'SourceHanSerifCN', serif;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.post-detail-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    flex-wrap: wrap;
}

.post-detail-meta .meta-tag {
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--accent-soft);
}

/* ===== Markdown Body ===== */
.markdown-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
}

/* ===== Text Scramble (rAF-batched inline decrypt, no per-char spans) ===== */
.scramble-active {
    opacity: 0.82;
    transition: opacity 0.15s;
}

.markdown-body .scramble-done {
    animation: decrypt-flash 0.4s ease-out;
}

@keyframes decrypt-flash {
    0%   { filter: brightness(1.3); }
    50%  { filter: brightness(1.15); }
    100% { filter: brightness(1); }
}

.markdown-body p {
    margin-bottom: 1.2em;
}

.markdown-body p:first-of-type::first-letter {
    font-family: 'SourceHanSerifCN', serif;
    font-size: 2.5em;
    font-weight: 800;
    color: var(--accent);
    float: left;
    line-height: 0.8;
    margin-right: 0.15em;
    margin-top: 0.05em;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
    margin: 2rem 0 1rem;
    color: var(--accent);
    font-family: var(--font-mono);
}

.markdown-body h2 { font-size: 1.5rem; }
.markdown-body h3 { font-size: 1.25rem; }

.markdown-body a {
    color: var(--accent-soft);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}
.markdown-body a:hover {
    border-bottom-color: var(--accent-soft);
}

.markdown-body strong {
    font-weight: 700;
    color: var(--accent-primary);
}

.markdown-body blockquote {
    border-left: 3px solid var(--accent-deep);
    padding: 0.5rem 1rem;
    margin: 1.5rem 0;
    background: rgba(62, 88, 72, 0.15);
    color: var(--accent-soft);
    font-style: italic;
}

.markdown-body code {
    background: var(--bg-secondary);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--accent-soft);
}

.markdown-body pre {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.markdown-body pre code {
    background: none;
    padding: 0;
    color: var(--text);
    font-size: 0.85rem;
    line-height: 1.7;
}

.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.markdown-body ul, .markdown-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.2em;
}

.markdown-body li {
    margin-bottom: 0.3em;
}

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.markdown-body th, .markdown-body td {
    padding: 0.6rem 1rem;
    border: 1px solid var(--border);
    text-align: left;
}

.markdown-body th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--accent-soft);
    font-family: var(--font-mono);
}

/* ===== Post Nav (prev/next) ===== */
.post-nav {
    display: none; /* 移动端保留底部导航 */
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.post-nav a {
    padding: 1rem;
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.2s;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.post-nav a:hover {
    border-color: var(--accent-soft);
    color: var(--accent);
}

.post-nav .prev { justify-content: flex-start; }
.post-nav .next { justify-content: flex-end; text-align: right; }

/* ===== Floating Prev/Next Nav (桌面端) ===== */
.post-floating-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 90;
    pointer-events: none;
}
.post-floating-nav.prev { left: 0; }
.post-floating-nav.next { right: 0; }

.post-floating-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-muted);
    pointer-events: auto;
    padding: 0.75rem 1rem;
    transition: all 0.25s ease;
    max-width: 42px;
    overflow: hidden;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
}

.post-floating-nav a:hover {
    max-width: 320px;
    border-color: var(--fragment-highlight);
    background: var(--bg-elevated);
    color: var(--accent);
    box-shadow: 0 4px 20px rgba(13, 16, 16, 0.6);
}

.post-floating-nav.prev a {
    justify-content: flex-start;
    border-radius: 0 6px 6px 0;
}

.post-floating-nav.next a {
    justify-content: flex-end;
    border-radius: 6px 0 0 6px;
}

.post-floating-nav .nav-arrow {
    font-size: 1.2rem;
    flex-shrink: 0;
    color: var(--accent-muted);
    transition: color 0.25s;
}

.post-floating-nav a:hover .nav-arrow {
    color: var(--accent);
}

.post-floating-nav .nav-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    opacity: 0;
    transition: opacity 0.25s;
    flex-shrink: 0;
}

.post-floating-nav a:hover .nav-label {
    opacity: 1;
}

.post-floating-nav .nav-title {
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.25s;
    text-overflow: ellipsis;
    overflow: hidden;
}

.post-floating-nav a:hover .nav-title {
    opacity: 1;
}

/* ===== TOC Sidebar ===== */
.toc-sidebar {
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    padding: 1.25rem;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    font-size: 0.85rem;
}

.toc-sidebar .toc-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent-soft);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.toc-sidebar ul {
    list-style: none;
    padding-left: 0;
}

.toc-sidebar li {
    margin-bottom: 0.3rem;
}

.toc-sidebar a {
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    padding: 0.25rem 0;
    transition: color 0.2s;
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
}

.toc-sidebar a:hover, .toc-sidebar a.is-active {
    color: var(--accent);
    border-left-color: var(--accent-deep);
}

.toc-sidebar ul ul a {
    padding-left: 1.5rem;
    font-size: 0.8rem;
}

/* ===== Revision Timeline (v2.0 P2) ===== */
.revision-section {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 0;
    margin: 2rem 0;
    background: var(--bg-secondary);
}

.revision-toggle {
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.revision-toggle:hover {
    color: var(--accent-soft);
}
.revision-toggle .toggle-icon {
    font-size: 0.7rem;
}

.timeline-body {
    padding-left: 0.5rem;
}

.timeline-row {
    display: flex;
    align-items: flex-start;
    min-height: 3.5rem;
}

.timeline-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 24px;
    flex-shrink: 0;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

.timeline-dot.major {
    background: var(--accent-primary);
    color: var(--bg-primary);
    width: 14px;
    height: 14px;
    font-size: 11px;
}

.timeline-dot.minor {
    background: transparent;
    border: 2px solid var(--accent-muted);
    color: var(--accent-muted);
}

.timeline-line {
    width: 2px;
    flex-grow: 1;
    background: var(--fragment-border);
    min-height: 1.5rem;
}

.timeline-card {
    margin-left: 0.75rem;
    padding: 0.4rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    flex-grow: 1;
    margin-bottom: 0.5rem;
    transition: border-color 0.2s;
}
.timeline-card:hover {
    border-color: var(--fragment-highlight);
}

.timeline-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.15rem;
}

.timeline-card-header .version-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--border);
}
.timeline-card-header .version-tag.major {
    border-color: var(--accent-deep);
    color: var(--accent);
    background: rgba(62, 88, 72, 0.3);
}
.timeline-card-header .version-tag.minor {
    border-color: var(--border);
    color: var(--accent-muted);
}
.timeline-card-header .version-date {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.timeline-summary {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
    line-height: 1.4;
}

.timeline-actions {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.25rem;
}

.timeline-actions .btn-tiny {
    padding: 0.15rem 0.5rem;
    font-size: 0.65rem;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}
.timeline-actions .btn-tiny:hover {
    border-color: var(--accent-soft);
    color: var(--accent);
}

.timeline-actions .btn-diff-prev {
    border-color: var(--accent-deep);
    color: var(--accent-muted);
}
.timeline-actions .btn-diff-prev:hover {
    background: var(--accent-deep);
    color: var(--accent);
    border-color: var(--accent-soft);
}

.meta-action-form { display: inline-flex; margin: 0; }
.meta-submit { background: transparent; font-family: var(--font-mono); cursor: pointer; }
.meta-status { color: var(--warning-accent); }
.meta-status--1 { color: var(--accent-soft); }
.meta-status--2 { color: var(--warning-accent); }

.revision-compare-form {
    display: flex;
    align-items: end;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin: 0.75rem 0 1rem;
    padding: 0.75rem;
    border: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
}
.revision-compare-form label {
    display: grid;
    gap: 0.2rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}
.revision-compare-form select {
    min-width: 7rem;
    padding: 0.35rem 1.6rem 0.35rem 0.45rem;
    border: 1px solid var(--border);
    border-radius: 0;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-mono);
}
.revision-compare-form .diff-arrow {
    align-self: center;
    color: var(--text-tertiary);
}

/* Revision viewer — 默认阅读宽度（查看历史版本内容） */
.revision-viewer {
    max-width: 800px;
    margin: 0.75rem auto 0;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-elevated);
    max-height: 70vh;
    overflow-y: auto;
}

/* 当 viewer 中包含 diff 时 → 全宽展示 */
.revision-viewer:has(.diff-table-wrapper) {
    max-width: none;
    width: 100%;
    margin: 0.75rem 0 0;
    padding: 1.5rem max(2rem, calc((100vw - 1400px) / 2));
    border-radius: 0;
    border-left: none;
    border-right: none;
    max-height: none;
    overflow-y: visible;
}

.revision-body-header {
    margin-bottom: 0.75rem;
}
.revision-body-header .version-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--accent-deep);
    color: var(--accent);
}
.revision-body-header .version-meta {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-left: 0.5rem;
}
.revision-body-header .version-summary {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* ===== Diff Table ===== */
.diff-header {
    margin-bottom: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}
.diff-header .tag-from {
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--warning-accent);
    color: var(--warning-accent);
    font-size: 0.75rem;
}
.diff-header .tag-to {
    padding: 0.1rem 0.4rem;
    border: 1px solid var(--accent-soft);
    color: var(--accent-soft);
    font-size: 0.75rem;
}
.diff-header .diff-arrow {
    color: var(--text-tertiary);
    margin: 0 0.4rem;
}
.diff-header .diff-meta {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-left: 0.5rem;
}
.diff-mode-switcher {
    display: flex;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
}
.diff-mode-switcher .btn-tiny {
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}
.diff-mode-switcher .btn-tiny.is-active {
    border-color: var(--accent-soft);
    background: var(--accent-deep);
    color: var(--accent);
}
.revision-diff-error {
    margin: 0;
    padding: 0.75rem;
    border-left: 3px solid var(--error-accent);
    background: rgba(201, 120, 120, 0.12);
    color: var(--error-accent);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* difflib HtmlDiff 表格 — 全宽无约束 */
.diff-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.diff-table-wrapper table.diff {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-collapse: collapse;
    width: 100%;
    table-layout: auto;
}
.diff-table-wrapper table.diff td {
    padding: 2px 8px;
    vertical-align: top;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}
.diff-table-wrapper .diff_header {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--accent-soft);
    position: sticky;
    top: 0;
    z-index: 1;
}
.diff-table-wrapper .diff_next {
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    font-size: 0.7rem;
}
.diff-table-wrapper .diff_add {
    background: rgba(62, 88, 72, 0.4);
    color: var(--accent);
}
.diff-table-wrapper .diff_chg {
    background: rgba(207, 181, 126, 0.15);
    color: var(--warning-accent);
}
.diff-table-wrapper .diff_sub {
    background: rgba(201, 120, 120, 0.15);
    color: var(--error-accent);
}

/* R3 structured diff — data stays presentation-neutral in JSON. */
.structured-diff-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}
.structured-diff-block {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    border-top: 1px solid var(--border-subtle);
}
.structured-diff-block pre {
    min-width: 0;
    margin: 0;
    padding: 0.65rem 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.55;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}
.structured-diff-old {
    border-right: 1px solid var(--border-subtle);
}
.structured-diff .diff-delete,
.structured-diff .diff-replace {
    background: rgba(201, 120, 120, 0.18);
    color: var(--error-accent);
}
.structured-diff-new .diff-insert,
.structured-diff-new .diff-replace {
    background: rgba(62, 88, 72, 0.45);
    color: var(--accent);
}
.structured-diff-old .diff-insert,
.structured-diff-new .diff-delete {
    display: none;
}
.structured-diff-empty {
    color: var(--text-tertiary);
    font-size: 0.8rem;
}
.structured-diff-inline .structured-diff-block {
    display: block;
}
.structured-diff-inline-content {
    width: 100%;
}
.structured-diff-inline del,
.structured-diff-inline ins {
    padding: 0 0.08rem;
    text-decoration-thickness: 1px;
}
.structured-diff-inline ins {
    text-decoration: none;
}
@media (max-width: 720px) {
    .structured-diff-block {
        grid-template-columns: 1fr;
    }
    .structured-diff-old {
        border-right: 0;
        border-bottom: 1px solid var(--border-subtle);
    }
    .revision-compare-form {
        align-items: stretch;
    }
    .revision-compare-form label,
    .revision-compare-form select,
    .revision-compare-form .btn-tiny {
        width: 100%;
    }
    .revision-compare-form .diff-arrow {
        display: none;
    }
}

/* ===== htmx indicator ===== */
.htmx-indicator {
    opacity: 0;
    transition: opacity 200ms ease-in;
}
.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
    opacity: 1;
}
.htmx-spinner {
    text-align: center;
    padding: 1rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* ===== Post Form ===== */
.post-form-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.post-form-wrapper form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.post-form-wrapper .field-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.post-form-wrapper label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-soft);
}

.post-form-wrapper input[type="text"],
.post-form-wrapper textarea,
.post-form-wrapper select {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.6rem 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.post-form-wrapper input[type="text"]:focus,
.post-form-wrapper textarea:focus,
.post-form-wrapper select:focus {
    outline: none;
    border-color: var(--accent-soft);
}

.post-form-wrapper textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* Optional custom cover; category defaults remain static assets. */
.cover-upload {
    border: 2px dashed var(--fragment-border);
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    text-align: center;
    transition: border-color 0.2s;
    cursor: pointer;
}
.cover-upload:hover {
    border-color: var(--accent-deep);
}
.cover-upload img {
    width: 96px;
    height: 72px;
    object-fit: cover;
    border: 1px solid var(--border);
}
.cover-upload #cover-filename,
.field-help {
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.5;
}
.field-help {
    margin: 0;
}

@media (max-width: 640px) {
    .cover-upload {
        grid-template-columns: 72px minmax(0, 1fr);
    }
    .cover-upload img {
        width: 72px;
        height: 54px;
    }
}

/* Form actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.btn-submit {
    padding: 0.75rem 2rem;
    background: var(--accent-deep);
    color: var(--accent);
    border: 1px solid var(--accent-deep);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.btn-submit:hover {
    background: var(--accent-muted);
    color: var(--accent-primary);
}

.btn-submit.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-submit.secondary:hover {
    border-color: var(--accent-soft);
    color: var(--accent-soft);
}

/* Editor dark theme integration */
#tui-editor .toastui-editor-defaultUI {
    border: 1px solid var(--border) !important;
    border-radius: 4px;
}

/* Form errors */
.form-errors {
    padding: 0.75rem 1rem;
    border: 1px solid var(--error-accent);
    background: rgba(201, 120, 120, 0.1);
    color: var(--error-accent);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* ===== Search Results ===== */
.search-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.search-header .search-query {
    color: var(--accent);
    font-family: var(--font-mono);
}

/* ===== Category Page Header ===== */
.cate-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.cate-header .cate-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: 700;
}

.cate-header .cate-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ===== Category cards on home page (cate_cards) ===== */
.cate-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.cate-card {
    padding: 1.25rem;
    border: 1px solid var(--fragment-border);
    background: var(--bg-elevated);
    cursor: pointer;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.cate-card:hover {
    border-color: var(--fragment-highlight);
    box-shadow: 0 4px 20px var(--fragment-highlight);
}

.cate-card .cate-card-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
}

.cate-card .cate-card-name {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.cate-card .cate-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Comments ===== */
.comment-section {
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.comment-form {
    padding: 1.25rem;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
}

.comment-form .avatar-col {
    flex-shrink: 0;
}
.comment-form .avatar-col img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
}

.comment-form .form-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.comment-form .form-row {
    display: flex;
    gap: 0.75rem;
}

.comment-form input[type="text"] {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.4rem 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    flex: 1;
}
.comment-form input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-soft);
}

.comment-form textarea {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.5rem 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    resize: vertical;
    min-height: 80px;
    line-height: 1.5;
}
.comment-form textarea:focus {
    outline: none;
    border-color: var(--accent-soft);
}

.comment-form .btn-comment {
    align-self: flex-end;
    padding: 0.35rem 1.25rem;
    background: var(--accent-deep);
    color: var(--accent);
    border: 1px solid var(--accent-deep);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}
.comment-form .btn-comment:hover {
    background: var(--accent-muted);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.comment-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border-left: 3px solid var(--accent-deep);
    background: var(--bg-secondary);
    transition: border-color 0.2s;
}
.comment-item:nth-child(even) {
    background: var(--bg-elevated);
}
.comment-item:hover {
    border-left-color: var(--accent-soft);
}

.comment-item .comment-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    flex-shrink: 0;
    object-fit: cover;
}

.comment-item .comment-body {
    flex: 1;
}

.comment-item .comment-nickname {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-soft);
}

.comment-item .comment-time {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    margin-left: 0.5rem;
}

.comment-item .comment-content {
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.6;
    margin-top: 0.25rem;
}

.comment-delete {
    margin-top: 0.35rem;
    padding: 0.1rem 0.45rem;
    border: 1px solid var(--error-accent);
    background: transparent;
    color: var(--error-accent);
    font: 0.7rem var(--font-mono);
  cursor: pointer;
}

.comment-report-link {
  display: inline-block;
  margin: 0.35rem 0 0 0.65rem;
  color: var(--text-tertiary);
  font: 0.65rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.comment-report-link:hover { color: var(--error-accent); }

/* Comment empty */
.comment-empty {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* ===== Responsive — Post Stream ===== */

/* Tablet 769-1024px：收敛为统一方向 */
@media (max-width: 1024px) and (min-width: 769px) {
    .stream-node,
    .stream-node--reverse {
        grid-template-columns: 60px 160px 1fr;
        padding-left: 50px;
        padding-right: 0;
        gap: 1.25rem;
    }
    .stream-node--reverse .node-rail { order: 1; text-align: left; }
    .stream-node--reverse .node-artifact { order: 2; }
    .stream-node--reverse .node-content { order: 3; }
    .stream-node--reverse .node-glitch-markers { order: 4; grid-column: 1 / -1; padding-top: 0; }

    .node-artifact { width: 160px; height: 120px; }
    .node-number { font-size: 1.6rem; }
    .post-stream::before { left: 30px; }
    .node-connector { left: -20px; width: 20px; }
    .stream-node--reverse .node-connector { left: -20px; right: auto; }
}

/* Mobile ≤768px：强制单列，简化轨道 */
@media (max-width: 768px) {
    .post-browser-sync {
        position: static;
        min-height: 1rem;
        margin-bottom: 0.35rem;
        text-align: right;
    }

    .filter-link,
    .stream-nav-link:not(.disabled) {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
    }

    .command-search {
        min-height: 44px;
        padding-top: 0;
        padding-bottom: 0;
    }

    .search-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 44px;
        min-height: 44px;
    }

    .node-title a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
    }

    .pagination a,
    .pagination span {
        min-width: 44px;
        height: 44px;
    }

    .stream-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    .stream-meta { gap: 1rem; }

    .post-stream { gap: 2rem; }
    .post-stream::before { left: 20px; }

    .stream-node,
    .stream-node--reverse {
        grid-template-columns: 1fr;
        padding-left: 40px;
        padding-right: 0;
        gap: 1rem;
    }
    .stream-node--reverse .node-rail { order: 1; text-align: left; }
    .stream-node--reverse .node-artifact { order: 2; }
    .stream-node--reverse .node-content { order: 3; }
    .stream-node--reverse .node-glitch-markers { order: 4; }

    .node-rail {
        flex-direction: row;
        align-items: baseline;
        gap: 0.75rem;
    }
    .node-number { font-size: 1.4rem; }
    .node-connector { left: -20px; top: 0.7rem; width: 20px; }
    .stream-node--reverse .node-connector { left: -20px; right: auto; }

    .node-artifact {
        width: 100%;
        height: 180px;
    }

    .node-glitch-markers { display: none; }

    .post-nav { display: grid; }
    .post-floating-nav { display: none; }
    .toc-sidebar { position: static; margin-top: 1.5rem; }
    .cate-cards { grid-template-columns: 1fr; }
    .comment-form { flex-direction: column; }
    .comment-form .form-row { flex-direction: column; }
}

.comment-identity,
.comment-login-required p {
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.76rem;
}
.comment-identity strong { color: var(--accent-soft); }
.comment-login-required .btn-comment {
    align-self: flex-start;
    text-decoration: none;
}
.comment-pending {
    margin-left: 0.55rem;
    color: var(--warning-accent);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

/* ===== Public Archive ===== */
.archive-page { padding-bottom: 5rem; }
.archive-console {
    display: grid;
    grid-template-columns: minmax(220px, 0.4fr) 1fr;
    gap: 2rem;
    align-items: stretch;
    margin-bottom: 4rem;
    border-top: 1px solid var(--fragment-border);
    border-bottom: 1px solid var(--fragment-border);
    background: linear-gradient(90deg, rgba(216, 255, 225, 0.035), transparent 62%);
}
.archive-console > div {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.15rem 0.8rem;
    align-items: end;
    padding: 1.2rem 0;
}
.archive-console-label {
    grid-column: 1 / -1;
    color: var(--text-tertiary);
    font-size: 0.62rem;
    letter-spacing: 0.16em;
}
.archive-console strong {
    color: var(--accent-primary);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 400;
    line-height: 0.9;
    text-shadow: 0 0 18px rgba(216, 255, 225, 0.12);
}
.archive-console > div > span:last-child {
    color: var(--accent-muted);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
}
.archive-jump {
    display: flex;
    flex-wrap: wrap;
    align-content: center;
    justify-content: flex-end;
    gap: 0.6rem;
    padding: 1rem 0;
}
.archive-jump a,
.archive-jump span {
    padding: 0.4rem 0.65rem;
    border: 1px solid var(--fragment-border);
    color: var(--accent-muted);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.archive-jump a:hover,
.archive-jump a:focus-visible {
    color: var(--accent-primary);
    border-color: var(--accent-deep);
    background: var(--fragment-highlight);
}
.archive-group { scroll-margin-top: 90px; margin-bottom: 5rem; }
.archive-group-header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--accent-deep);
}
.archive-date { display: flex; align-items: baseline; gap: 0.65rem; }
.archive-date span { color: var(--text-tertiary); font-size: 0.75rem; letter-spacing: 0.12em; }
.archive-date strong {
    color: var(--accent-primary);
    font-size: clamp(2.2rem, 5vw, 4.4rem);
    font-weight: 400;
    line-height: 0.85;
}
.archive-date strong::before { content: "/"; color: var(--accent-deep); margin-right: 0.3rem; }
.archive-group-meta { display: flex; gap: 1rem; color: var(--text-tertiary); font-size: 0.62rem; letter-spacing: 0.12em; }
.archive-group .post-stream { margin-top: 0; }
.archive-empty { margin: 4rem 0; }

@media (max-width: 700px) {
    .archive-console { grid-template-columns: 1fr; gap: 0; }
    .archive-jump { justify-content: flex-start; border-top: 1px solid var(--fragment-border); }
    .archive-group-header { align-items: flex-start; flex-direction: column; }
    .archive-group-meta { width: 100%; justify-content: space-between; }
}