:root{--app-bg: #f8fafc;--app-fg: #0f172a;--panel-bg: #ffffff;--panel-elevated: #f8fafc;--border-color: #e2e8f0;--muted-foreground: #64748b;--muted-foreground-soft: #94a3b8;--hover-bg: #f1f5f9;--selected-bg: #e0e7ff;--selected-fg: #4338ca;--page-header-bg: #ffffff;--page-header-fg: #0f172a;--page-header-border: #e2e8f0;--sider-bg: #ffffff;--toggle-hover-bg: #f1f5f9;--backup-hero-bg: linear-gradient(135deg, #ffffff 0%, #f8fafc 60%, #eef2ff 100%);--backup-card-bg: #ffffff;--backup-card-shadow: 0 6px 16px rgba(15, 23, 42, .06);--backup-list-item-bg: #ffffff;--diff-full-bg: #f1f5f9;--diff-old-bg: #fef2f2;--diff-old-border: #fecaca;--diff-new-bg: #f0fdf4;--diff-new-border: #bbf7d0;--online-offline-bg: #f1f5f9;--note-paper-bg: #fff8d6;--note-paper-border: #f2d77c;--note-paper-shadow: 0 0 0 0 transparent;--note-history-bg: #fffef7;--search-highlight-bg: #fde68a;--search-highlight-fg: #78350f}[data-theme=dark]{--app-bg: #0f1720;--app-fg: #d6deea;--panel-bg: #131d2a;--panel-elevated: 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var(--page-header-border)}.page-header--editor{background:var(--page-header-bg)!important}.page-header__title{color:var(--page-header-fg)}.page-content{background:var(--app-bg);color:var(--app-fg)}.page-content--editor{background:var(--panel-bg)}.theme-toggle-btn{color:var(--page-header-fg)}.theme-toggle-btn:hover{background:var(--toggle-hover-bg)!important}.login-page{display:flex;justify-content:center;align-items:center;min-height:100vh;background:var(--app-bg);position:relative}.login-page__toggle{position:absolute;top:16px;right:20px}.login-card{background:var(--panel-bg);border-color:var(--border-color)}.nav-sider .ant-layout-sider-children{background:var(--sider-bg)}.question-note-inline{margin-top:10px;border-radius:12px;overflow:hidden;animation:noteDropIn .18s ease-out}@keyframes 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textarea.ant-input{border-radius:10px;background:var(--note-history-bg);border-color:var(--note-paper-border)}.question-note-panel__history-title{font-size:12px;color:var(--muted-foreground);font-weight:600;margin-top:0}.question-note-list{max-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding-right:2px}.question-note-list__loading{min-height:64px;display:flex;align-items:center;justify-content:center}.question-note-item{padding:10px;border-radius:10px;background:var(--note-history-bg);border:1px solid var(--border-color)}.question-note-item--self{border-color:#93c5fd;box-shadow:inset 0 0 0 1px #3b82f640}.question-note-item__meta{display:flex;align-items:center;gap:6px;margin-bottom:6px;flex-wrap:wrap}.question-note-user{display:inline-flex;align-items:center;gap:6px;margin-right:auto}.question-note-user__avatar{width:20px;height:20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700}.question-note-user__name{font-size:12px;font-weight:600}.question-note-item__type{font-size:11px;color:#7c3d00;background:#facc1540;border:1px solid rgba(245,158,11,.35);border-radius:999px;padding:1px 8px}.question-note-item__time{font-size:11px;color:var(--muted-foreground-soft)}.question-note-item__delete{margin-left:auto}.question-note-item__content{font-size:13px;line-height:1.6;color:var(--app-fg);white-space:pre-wrap;word-break:break-word}@media(max-width:768px){.backup-change-item__header,.diff-view{flex-direction:column}.diff-arrow{transform:rotate(90deg);text-align:center;padding:4px 0}.diff-cell{width:100%}}