/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========== CSS 变量定义 ========== */
:root {
    --bg: #faf9f7;
    --surface: #ffffff;
    --text: #1f2328;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border: #e8e6e1;
    --accent: #c2410c;
    --accent-dark: #9a3412;
    --accent-soft: #fff1e6;
    --card-bg: #fff7ed;
    --card-border: #fed7aa;
    --nav-bg: #fdf6ee;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --serif: Georgia, 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* ========== 页面基础样式 ========== */
body {
    font-family: var(--sans);
    background: var(--bg);
    min-height: 100vh;
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ========== 站点头部 ========== */
.site-header {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 760px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: flex;
    flex-direction: column;
}

.brand .site-title {
    font-family: var(--sans);
    font-size: 1.7rem;
    font-weight: 700;
    font-style: italic;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.brand .site-title:hover {
    color: var(--accent);
}

.nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    padding: 7px 14px;
    border-radius: 20px;
    border: 1px solid transparent;
    transition: all 0.15s;
}

.nav a:hover {
    color: var(--text);
    background: var(--bg);
}

.nav a.active {
    color: var(--text);
    font-weight: 600;
    border-color: var(--accent);
    border-radius: 999px;
}

.nav .personalize-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 20px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    transition: all 0.15s;
}

.nav .personalize-btn:hover {
    background: var(--bg);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform 0.15s;
}

.nav-dropdown.open .nav-dropdown-caret {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    padding: 6px;
    z-index: 300;
}

.nav-dropdown-item {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text);
    transition: background 0.15s;
}

.nav-dropdown-item:hover {
    background: var(--bg);
}

.bg-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: #fff;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 0.9rem;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.bg-toast.error {
    background: var(--danger);
}

/* ========== 主题更换弹窗 ========== */
.theme-modal {
    max-width: 360px;
}

.theme-preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.theme-preset {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.theme-preset:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.theme-preset.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.theme-swatch {
    display: flex;
    height: 22px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.theme-swatch span {
    flex: 1;
}

.theme-name {
    font-size: 0.85rem;
    color: var(--text);
    text-align: center;
}

/* ========== 容器 ========== */
.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 36px 24px 64px;
}

/* ========== 首页布局：左侧主题侧边栏 + 主区 ========== */
.container-home {
    max-width: 1060px;
    display: flex;
    align-items: flex-start;
    gap: 36px;
}

.home-main {
    flex: 1;
    min-width: 0;
}

.home-sidebar {
    flex: 0 0 200px;
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 104px);
    overflow-y: auto;
    padding-right: 4px;
}

.home-sidebar-title {
    font-family: var(--serif);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.sidebar-group {
    margin-bottom: 18px;
}

.sidebar-topic {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    margin-bottom: 4px;
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text);
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: background 0.12s, color 0.12s;
}

.sidebar-topic:hover {
    background: var(--accent-soft);
    color: var(--accent);
}

.sidebar-topic.active {
    color: var(--accent);
}

.sidebar-theme-list {
    list-style: none;
    padding-left: 12px;
    margin-left: 10px;
    border-left: 1px solid var(--border);
}

.sidebar-theme {
    padding: 3px 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: background 0.12s, color 0.12s;
}

.sidebar-theme:hover {
    color: var(--text);
    background: var(--bg);
}

.sidebar-theme.active {
    color: #fff;
    background: var(--accent);
    font-weight: 600;
}

.sidebar-empty {
    font-size: 0.82rem;
    color: var(--text-muted);
    padding: 4px 10px;
}

@media (max-width: 800px) {
    .container-home {
        display: block;
    }
    .home-sidebar {
        display: none;
    }
}

/* ========== 首页标题 ========== */
.page-title {
    font-family: var(--serif);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--accent);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 28px;
}

/* ========== 主题标签页 ========== */
.topic-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: -8px 0 24px;
}

.topic-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 0.85rem;
    font-family: var(--sans);
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: color 0.12s, border-color 0.12s, background 0.12s;
}

.topic-tab-add {
    border-style: dashed;
}

.topic-tab-add:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.topic-tab-del {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: 2px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1;
    cursor: pointer;
    transition: color 0.12s, background 0.12s;
}

.topic-tab-del:hover {
    color: #fff;
    background: var(--danger);
}

/* 添加专栏行 */
.topic-add {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: -8px 0 24px;
}

.topic-add[hidden] {
    display: none;
}

.topic-add input {
    flex: 1;
    max-width: 260px;
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
}

.topic-add input:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.topic-add .btn {
    padding: 6px 14px;
    font-size: 0.85rem;
    border-radius: 20px;
}

.topic-tab:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.topic-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-weight: 600;
}

.topic-count {
    font-size: 0.78rem;
    opacity: 0.7;
    margin-left: 2px;
}

/* ========== 文章列表 ========== */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.post-card {
    position: relative;
    padding: 24px 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: box-shadow 0.15s, transform 0.15s;
}

.post-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.post-card .post-title {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
    color: var(--accent);
}

.post-card .post-title a:hover {
    color: var(--accent-dark);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.post-meta .sep {
    color: var(--border);
}

.post-topic {
    display: inline-block;
    padding: 1px 9px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 10px;
}

.post-theme {
    display: inline-block;
    padding: 1px 9px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    color: #475569;
    background: #f1f5f9;
    border-radius: 10px;
}

.post-draft {
    display: inline-block;
    padding: 1px 9px;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    color: #b7791f;
    background: #fef3c7;
    border-radius: 10px;
}

.post-stat {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
}

.post-stat svg {
    display: block;
    flex-shrink: 0;
}

.post-stat-like svg {
    color: #e0566b;
}

.post-stat-comment svg {
    color: var(--accent);
}

.post-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 12px;
    word-break: break-word;
}

.read-more {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

.read-more:hover {
    color: var(--accent-dark);
}

/* 鼠标跟随的悬停提示框：显示标题与简介 */
.post-card-tooltip {
    position: fixed;
    z-index: 300;
    max-width: 320px;
    background: var(--surface);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 12px 16px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
    pointer-events: none;
}

.post-card-tooltip.visible {
    opacity: 1;
    visibility: visible;
}

.post-card-tooltip-title {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.4;
    color: var(--accent);
    margin-bottom: 6px;
}

.post-card-tooltip-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    word-break: break-word;
}

/* ========== 文章详情页 ========== */
.post-full {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 40px 36px;
    box-shadow: var(--shadow);
}

.post-full .post-title {
    font-family: var(--serif);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 14px;
    color: var(--accent);
}

.post-full .post-meta {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
}

.post-content {
    font-family: var(--serif);
    font-size: 1.05rem;
    line-height: 1.9;
    color: #2b2f36;
    word-break: break-word;
}

.post-actions {
    display: flex;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

/* ========== 空状态 / 加载 ========== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.loading {
    text-align: center;
    padding: 60px;
    color: var(--text-muted);
}

/* ========== 表单（编辑器） ========== */
.editor-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 30px;
    box-shadow: var(--shadow);
}

.editor-card h1 {
    font-family: var(--serif);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.editor-meta {
    display: flex;
    gap: 20px;
    align-items: stretch;
}

.editor-meta-left,
.editor-meta-right {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.editor-meta-right .form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}

.editor-meta-right textarea {
    flex: 1;
    resize: vertical;
}

.editor-meta-row {
    display: flex;
    gap: 16px;
}

.editor-meta-half {
    flex: 1;
    min-width: 0;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 7px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-group textarea {
    resize: vertical;
    min-height: 260px;
    font-family: var(--serif);
    line-height: 1.8;
}

#summary {
    min-height: 76px;
    font-family: var(--sans);
    line-height: 1.7;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.editor-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px 16px;
    margin-top: 20px;
    padding: 12px 16px;
    position: sticky;
    bottom: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.06);
    z-index: 20;
}

.editor-footer .form-actions {
    margin-top: 0;
}

.editor-stats {
    font-size: 0.85rem;
    font-family: var(--sans);
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-dark);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn-secondary:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.btn-danger {
    background: var(--surface);
    color: var(--danger);
    border-color: var(--danger-soft);
}

.btn-danger:hover {
    background: var(--danger-soft);
}

.btn:active {
    transform: scale(0.98);
}

/* ========== Toast 通知 ========== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 13px 20px;
    border-radius: 8px;
    color: #fff;
    font-weight: 500;
    font-size: 0.9rem;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.25s ease-out;
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 8px;
}

@keyframes toastIn {
    from { transform: translateY(12px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

.toast.success {
    background: #16a34a;
}

.toast.error {
    background: var(--danger);
}

/* ========== 插入图片弹窗 ========== */
.image-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1500;
    padding: 20px;
}

.image-modal-overlay[hidden] {
    display: none;
}

.image-modal {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.image-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.image-modal-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    font-family: var(--sans);
}

.image-modal-close {
    border: none;
    background: transparent;
    font-size: 1.4rem;
    line-height: 1;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 4px;
}

.image-modal-close:hover {
    color: var(--text);
}

.image-modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-block {
    width: 100%;
}

.image-modal-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.image-modal-divider::before,
.image-modal-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.image-url-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.92rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.image-url-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
    background: #fff;
}

/* ========== Markdown 编辑器（左右分栏） ========== */
.container-editor {
    max-width: none;
    padding: 20px 20px 48px;
}

.markdown-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    background: #f6f5f2;
}

.md-btn {
    padding: 5px 11px;
    font-size: 0.85rem;
    font-family: var(--sans);
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.12s, border-color 0.12s, background 0.12s;
}

.md-btn:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.md-btn:active {
    background: var(--accent-soft);
}

.md-btn-bold {
    font-weight: 700;
}

.md-btn-italic {
    font-style: italic;
    font-family: var(--serif);
}

.md-btn-strike {
    text-decoration: line-through;
}

.md-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 5px 9px;
}

.md-btn-icon svg {
    display: block;
}

.md-dropdown {
    position: relative;
    display: inline-block;
}

.md-caret {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    vertical-align: middle;
    transition: transform 0.15s;
}

.md-dropdown.open .md-caret {
    transform: rotate(180deg);
}

.md-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 130px;
    max-height: 320px;
    overflow-y: auto;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    padding: 6px;
    z-index: 300;
}

.md-dropdown-item {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 7px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--text);
    transition: background 0.12s;
}

.md-dropdown-item:hover {
    background: var(--accent-soft);
}

.md-dropdown-menu-wide {
    min-width: 220px;
    max-width: 340px;
}

.md-dropdown-empty {
    padding: 10px 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.md-divider {
    width: 1px;
    background: var(--border);
    margin: 2px 4px;
    align-self: stretch;
}

.markdown-editor {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 0 0 8px 8px;
    overflow: hidden;
    height: 82vh;
    min-height: 520px;
}

.markdown-editor-pane {
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.markdown-editor-input {
    flex: 0 0 50%;
}

.markdown-editor-toc {
    flex: 0 0 200px;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: #faf9f7;
    border-right: 1px solid var(--border);
}

.toc-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px 8px;
}

.toc-item {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    border-radius: 6px;
    padding: 5px 10px;
    font-family: var(--sans);
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.12s, background 0.12s;
}

.toc-item:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

.toc-empty {
    margin: 0;
    padding: 8px 10px;
    font-size: 0.82rem;
    font-family: var(--sans);
    color: var(--text-muted);
}

.markdown-editor-resizer {
    flex: 0 0 6px;
    cursor: col-resize;
    background: var(--border);
    transition: background 0.15s;
}

.markdown-editor-resizer:hover,
.markdown-editor-resizer.dragging {
    background: var(--accent);
}

.pane-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: #f6f5f2;
    padding: 8px 14px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.code-editor {
    position: relative;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    background: #fff;
}

.code-editor-highlight,
.markdown-editor-input textarea {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    border: none;
    border-radius: 0;
    box-sizing: border-box;
    font-family: 'SFMono-Regular', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.92rem;
    line-height: 1.7;
    padding: 16px 18px;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    tab-size: 4;
}

.code-editor-highlight {
    overflow: hidden;
    pointer-events: none;
    color: #24292f;
    background: #fff;
}

.code-editor-highlight code {
    display: block;
    font: inherit;
    padding: 0;
    margin: 0;
    white-space: pre-wrap;
    background: transparent;
    color: inherit;
}

.markdown-editor-input textarea {
    overflow: auto;
    resize: none;
    background: transparent;
    color: transparent;
    -webkit-text-fill-color: transparent;
    caret-color: #24292f;
    z-index: 2;
    /* 隐藏滚动条：避免滚动条占位导致 textarea 与叠加层的可视区域不一致 */
    scrollbar-width: none;
}

.markdown-editor-input textarea::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.markdown-editor-input textarea::placeholder {
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
    opacity: 1;
}

.markdown-editor-input textarea::selection {
    background: rgba(59, 130, 246, 0.22);
}

.markdown-editor-input textarea:focus {
    box-shadow: none;
    background: transparent;
}

/* 编辑器浅色语法高亮主题（叠加层专用） */
.code-editor-highlight .hljs { color: #24292f; background: transparent; }
.code-editor-highlight .hljs-doctag,
.code-editor-highlight .hljs-keyword,
.code-editor-highlight .hljs-formula { color: #d73a49; }
.code-editor-highlight .hljs-comment,
.code-editor-highlight .hljs-quote { color: #6a737d; font-style: italic; }
.code-editor-highlight .hljs-name,
.code-editor-highlight .hljs-section,
.code-editor-highlight .hljs-selector-tag,
.code-editor-highlight .hljs-deletion,
.code-editor-highlight .hljs-subst { color: #d73a49; }
.code-editor-highlight .hljs-literal,
.code-editor-highlight .hljs-number { color: #005cc5; }
.code-editor-highlight .hljs-string,
.code-editor-highlight .hljs-regexp,
.code-editor-highlight .hljs-addition,
.code-editor-highlight .hljs-attribute,
.code-editor-highlight .hljs-meta .hljs-string { color: #032f62; }
.code-editor-highlight .hljs-attr,
.code-editor-highlight .hljs-variable,
.code-editor-highlight .hljs-template-variable,
.code-editor-highlight .hljs-type,
.code-editor-highlight .hljs-selector-class,
.code-editor-highlight .hljs-selector-attr,
.code-editor-highlight .hljs-selector-pseudo { color: #e36209; }
.code-editor-highlight .hljs-symbol,
.code-editor-highlight .hljs-bullet,
.code-editor-highlight .hljs-link,
.code-editor-highlight .hljs-meta,
.code-editor-highlight .hljs-selector-id,
.code-editor-highlight .hljs-title { color: #005cc5; }
.code-editor-highlight .hljs-built_in,
.code-editor-highlight .hljs-class .hljs-title,
.code-editor-highlight .hljs-title.class_ { color: #e36209; }
.code-editor-highlight .hljs-emphasis { font-style: italic; }
.code-editor-highlight .hljs-strong { font-weight: 700; }
.code-editor-highlight .hljs-code-block { background: rgba(27, 31, 35, 0.04); }

.markdown-editor-preview {
    flex: 1 1 0;
    background: #fff;
}

.markdown-editor-preview .markdown-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 22px;
}

.empty-preview {
    color: var(--text-muted);
    font-family: var(--sans);
    font-size: 0.9rem;
}

/* ========== Markdown 渲染排版 ========== */
.markdown-body {
    font-family: var(--sans);
    font-size: 1.02rem;
    line-height: 1.85;
    color: #2b2f36;
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}

.markdown-body > :first-child { margin-top: 0; }
.markdown-body > :last-child { margin-bottom: 0; }

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    font-family: var(--sans);
    font-weight: 700;
    line-height: 1.35;
    margin: 1.6em 0 0.7em;
    color: var(--text);
}

.markdown-body h1 {
    font-size: 1.7rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.4em;
}

.markdown-body h2 {
    font-size: 1.45rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.35em;
}

.markdown-body h3 { font-size: 1.25rem; }
.markdown-body h4 { font-size: 1.1rem; }
.markdown-body h5 { font-size: 1rem; }
.markdown-body h6 { font-size: 0.9rem; color: var(--text-secondary); }

/* 文章详情页锚点跳转时避开吸顶头部（编辑器预览无需此间距） */
body.post-page .markdown-body h1,
body.post-page .markdown-body h2,
body.post-page .markdown-body h3,
body.post-page .markdown-body h4,
body.post-page .markdown-body h5,
body.post-page .markdown-body h6 {
    scroll-margin-top: 88px;
}

.markdown-body p { margin: 0.8em 0; }

.markdown-body a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.markdown-body a:hover { color: var(--accent-dark); }

.markdown-body ul,
.markdown-body ol {
    margin: 0.8em 0;
    padding-left: 1.6em;
}

.markdown-body li { margin: 0.35em 0; }
.markdown-body li > ul,
.markdown-body li > ol { margin: 0.2em 0; }

.markdown-body blockquote {
    margin: 1em 0;
    padding: 0.4em 1.2em;
    border-left: 4px solid var(--accent);
    background: var(--accent-soft);
    color: var(--text-secondary);
    border-radius: 0 6px 6px 0;
}

.markdown-body blockquote p { margin: 0.4em 0; }

.markdown-body code {
    font-family: 'SFMono-Regular', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.88em;
    background: #f3f4f6;
    padding: 0.15em 0.4em;
    border-radius: 4px;
    color: #c2410c;
}

.markdown-body pre {
    background: #1f2328;
    color: #e5e7eb;
    padding: 16px 18px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1em 0;
    line-height: 1.6;
}

.markdown-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    border-radius: 0;
    font-size: 0.88em;
}

/* 语法高亮：去掉 highlight 主题自带的背景与内边距，保持代码块整体深色风格 */
.markdown-body pre code.hljs {
    background: transparent;
    padding: 0;
    color: #e5e7eb;
    overflow-x: visible;
}

.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1em 0;
}

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

.markdown-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
    font-size: 0.92rem;
    font-family: var(--sans);
    display: block;
    overflow-x: auto;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: left;
}

.markdown-body th { background: #f6f5f2; font-weight: 600; }
.markdown-body tr:nth-child(even) td { background: #faf9f7; }

.markdown-body input[type="checkbox"] { margin-right: 0.4em; }

/* ========== 响应式适配 ========== */
@media (max-width: 800px) {
    .markdown-editor {
        flex-direction: column;
        height: auto;
    }
    .markdown-editor-input {
        flex: none;
        border-bottom: 1px solid var(--border);
    }
    .markdown-editor-toc {
        display: none;
    }
    .markdown-editor-preview {
        flex: none;
    }
    .markdown-editor-resizer {
        display: none;
    }
    .code-editor {
        height: 320px;
    }
    .markdown-editor-preview .markdown-body {
        min-height: 200px;
    }
}

@media (max-width: 640px) {
    .header-inner {
        padding: 16px 16px;
    }
    .brand .site-title {
        font-size: 1.35rem;
    }
    .container {
        padding: 24px 16px 48px;
    }
    .post-full {
        padding: 28px 20px;
    }
    .post-full .post-title {
        font-size: 1.5rem;
    }
    .editor-card {
        padding: 24px 20px;
    }
    .editor-meta {
        flex-direction: column;
        gap: 18px;
    }
    .editor-meta-left,
    .editor-meta-right {
        flex: none;
    }
    .editor-meta-right .form-group {
        flex: none;
        display: block;
        margin-bottom: 18px;
    }
    .editor-meta-right textarea {
        flex: none;
    }
    .editor-meta-row {
        flex-direction: column;
        gap: 0;
    }
    .editor-meta-half {
        flex: none;
    }
}

/* ========== 登录页 ========== */
.container-login {
    max-width: 440px;
    padding-top: 64px;
}

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 32px;
    box-shadow: var(--shadow);
}

.login-title {
    font-family: var(--serif);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.login-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 28px;
}

.login-error {
    color: var(--danger);
    font-size: 0.88rem;
    margin-top: 14px;
    text-align: center;
}

/* ========== 管理员管理页 ========== */
.admin-list {
    margin-top: 28px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.admin-list-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.admin-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 10px;
    background: var(--bg);
}

.admin-item-info {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.admin-item-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border);
    background: var(--surface);
}

.admin-item-avatar-empty {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-soft);
}

.admin-item-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.admin-item-nickname {
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 600;
    word-break: break-all;
}

.admin-item-email {
    font-size: 0.82rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.admin-item-badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
    margin-left: 8px;
    white-space: nowrap;
}

.admin-item-del {
    padding: 5px 12px;
    font-size: 0.82rem;
    border-radius: 6px;
    border: 1px solid var(--danger-soft);
    background: var(--surface);
    color: var(--danger);
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
}

.admin-item-del:hover {
    background: var(--danger-soft);
}

/* ========== 个人资料页 ========== */
.profile-avatar-row {
    display: flex;
    align-items: center;
    gap: 14px;
}

.profile-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border);
    background: var(--surface);
}

.profile-avatar-actions {
    flex: 1;
    display: flex;
    gap: 10px;
    align-items: center;
}

.profile-avatar-actions input {
    flex: 1;
}

.profile-avatar-actions .btn {
    flex-shrink: 0;
}

/* 编辑器只读作者字段的视觉提示 */
input[readonly] {
    cursor: default;
    background: var(--surface);
}

/* ========== 文章互动（点赞 / 打赏） ========== */
.post-engagement {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.like-btn.liked {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

/* ========== 评论区 ========== */
.comments {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.comments-title {
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.comment-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
}

.comment-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 6px;
}

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

.comment-time {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.comment-content {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
}

.comments-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 20px 0;
}

.comment-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.comment-form textarea {
    resize: vertical;
    min-height: 90px;
    line-height: 1.7;
}

.comment-form .btn {
    align-self: flex-end;
}

/* ========== 评论回复 / 管理 ========== */
.comment-thread {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comment-replies {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-left: 28px;
    padding-left: 16px;
    border-left: 2px solid var(--border);
}

.comment-actions {
    display: flex;
    gap: 14px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.comment-reply-btn,
.comment-action {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.82rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.15s;
    font-family: inherit;
}

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

.comment-action:hover {
    color: var(--text);
}

.comment-action-danger:hover {
    color: var(--danger);
}

.comment-hidden {
    opacity: 0.6;
}

.comment-hidden-badge {
    display: inline-block;
    margin-left: 6px;
    padding: 0 8px;
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1.6;
    color: #b7791f;
    background: #fef3c7;
    border-radius: 8px;
    vertical-align: middle;
}

.comment-reply-form {
    margin-top: 12px;
}

.comment-reply-form-inner {
    padding: 12px;
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: 8px;
}

.comment-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ========== 底部浮动互动栏 ========== */
.floating-actions {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: var(--shadow-md);
    z-index: 90;
}

.floating-actions[hidden] {
    display: none;
}

.fab-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}

.fab-btn:hover {
    background: var(--bg);
    color: var(--text);
}

.fab-btn:active {
    transform: scale(0.97);
}

.fab-btn svg {
    flex-shrink: 0;
}

.fab-like-icon {
    color: #e0566b;
}

.fab-comment-icon {
    color: var(--accent);
}

.fab-donate-icon {
    color: #d97706;
}

.fab-btn.liked {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

.fab-btn.liked .fab-like-icon {
    color: var(--accent);
}

.fab-divider {
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 4px;
}

/* ========== 右侧评论抽屉 ========== */
.comment-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    display: flex;
    justify-content: flex-end;
    z-index: 1500;
}

.comment-drawer-overlay[hidden] {
    display: none;
}

.comment-drawer {
    width: 420px;
    max-width: 92vw;
    height: 100%;
    background: var(--surface);
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    padding: 20px 20px 16px;
    animation: drawerIn 0.22s ease-out;
}

@keyframes drawerIn {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

.comment-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.comment-drawer-header .comments-title {
    margin-bottom: 0;
}

.comment-drawer .comments-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    margin-bottom: 16px;
}

/* 文章页底部为浮动栏预留空间 */
.post-page .container {
    padding-bottom: 128px;
}

/* ========== 打赏弹窗 ========== */
.donate-modal {
    max-width: 360px;
}

.donate-body {
    align-items: center;
    text-align: center;
}

.donate-tip {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.donate-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.donate-tab {
    padding: 6px 18px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    font-family: inherit;
}

.donate-tab.active {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

.donate-qr-pane {
    display: flex;
    justify-content: center;
}

.donate-qr-pane[hidden] {
    display: none;
}

.donate-qr {
    width: 220px;
    height: 220px;
    object-fit: contain;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.donate-hint {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.donate-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 24px 8px;
}

/* ========== 灵动岛式悬浮头部（文章详情页） ========== */
.site-header-pill {
    top: 16px;
    width: calc(100% - 32px);
    max-width: 760px;
    margin: 16px auto 0;
    background: rgba(255, 255, 255, 0);
    border-bottom: none;
    border: 1px solid transparent;
    border-radius: 0;
    box-shadow: none;
    transition:
        border-radius 0.4s ease,
        border-color 0.4s ease,
        box-shadow 0.4s ease,
        background-color 0.4s ease;
}

.site-header-pill .header-inner {
    max-width: none;
    margin: 0;
    padding: 6px 8px 6px 20px;
    gap: 12px;
}

.site-header-pill .site-title {
    font-size: 1.2rem;
}

.site-header-pill .nav {
    gap: 6px;
}

.site-header-pill.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-color: var(--border);
    border-radius: 999px;
    box-shadow: var(--shadow-md);
}

.site-header-pill .pill-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 16px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.7;
    transition: all 0.15s;
}

.site-header-pill .pill-btn-primary {
    background: var(--accent);
    color: #fff;
}

.site-header-pill .pill-btn-primary:hover {
    background: var(--accent-dark);
    color: #fff;
}

.site-header-pill .pill-btn-danger {
    background: var(--surface);
    color: var(--danger);
    border-color: var(--danger-soft);
}

.site-header-pill .pill-btn-danger:hover {
    background: var(--danger-soft);
}

.site-footer {
    text-align: center;
    padding: 24px 16px 32px;
    font-size: 13px;
    color: var(--text-muted);
}

.site-footer a {
    color: var(--text-muted);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--text-secondary);
}