:root {
  /* 基准字体大小：全站所有字号都以它为 1rem 标准进行放大/缩小（改这里即可整体缩放 UI 文字） */
  --base-font-size: 16px;
  /* 跟随 daisyUI 主题变量：切换 <html data-theme> 时，界面(侧栏/工具栏/面板)整体风格同步变化 */
  --bg: var(--color-base-100, #f6f7f9);
  --panel: var(--color-base-200, #ffffff);
  --line: var(--color-base-300, #e3e6ea);
  --text: var(--color-base-content, #1f2329);
  --muted: color-mix(in srgb, var(--color-base-content, #1f2329) 62%, transparent);
  --accent: var(--color-primary, #2f6fed);
  --danger: var(--color-error, #e5484d);
  /* 编辑器底衬：画布/面板作为「区块」浮在其上。
     取 base-300（浅色≈#ededed / 深色≈21%）——比卡片底色 base-100 深，两套主题下都成立 */
  --editor-bg: var(--color-base-300, #e3e6ea);
  --block-shadow: 0 1px 2px rgba(20, 30, 50, .05), 0 6px 16px rgba(20, 30, 50, .05);
  /* 编辑器中「区块」统一阴影：AI 工作区 / 画布 / 样式栏 三者共用。
     第一层 0 0 14px 为四向均匀柔影（无硬描边环，上下左右均可见），第二层 0 8px 20px 增加底部层次 */
  --panel-shadow: 0 0 14px rgba(20, 30, 50, .10), 0 8px 20px rgba(20, 30, 50, .08);
  /* 画布内容(节点/连线/编辑框)配色固定，不随 UI 主题切换变化；画布背景随主题切换 */
  --canvas-panel: #ffffff;
  --canvas-line: #e3e6ea;
  --canvas-text: #1f2329;
  --canvas-accent: #2f6fed;
}
* { box-sizing: border-box; margin: 0; }
/* 以基准字体大小为根字号，1rem = --base-font-size；改根字号即可整体缩放全部 UI 文字 */
html { font-size: var(--base-font-size); }
html, body, #app { height: 100%; }
#app > div { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: inherit; text-decoration: none; }
/* 避免在可拖拽卡片/列表内拖动缩略图时触发浏览器原生图片拖拽（会绕过自定义 dragstart，导致 drop 读不到数据、看似拖不进去） */
.map-card img, .trash-thumb img, img.thumb { -webkit-user-drag: none; user-drag: none; }

/* home：灰底仅作右侧内容「区块」的底衬；左侧栏退回普通栏（贴左/顶/底，右侧描边分隔）。
   app-home 不设外边距、无列间隔，.content 的 margin 形成内容浮动（仅上/右/下留间隙，左侧贴侧栏）。 */
.app-home { display: grid; grid-template-columns: 260px 1fr; grid-template-rows: 60px 1fr; height: 100%; background: var(--editor-bg); column-gap: 0; }

/* 顶栏：左到右通栏 70px 高，整条作为窗口拖拽区（HTML 上 data-tauri-drag-region=deep）。
   背景与 app-home 一致，下边框与内容区分隔；品牌 logo 在左、控件在右。 */
.topbar { grid-column: 1 / 3; grid-row: 1; height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 12px; background: var(--editor-bg); border-bottom: 1px solid var(--line); }

/* sidebar：贴边普通栏，不做圆角/投影区块；无背景（透出 app-home 灰底） */
.sidebar {
  grid-column: 1; grid-row: 2;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 16px 12px; min-height: 0; overflow: hidden;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.0625rem; padding: 0 8px; }
.brand .logo { color: var(--accent); font-size: 1.25rem; display: flex; align-items: center; }
/* 品牌标识：引用 /logo.svg（官方原色）；尺寸跟随 .logo 字号 */
.brand .logo img { width: 1.6em; height: 1.6em; display: block; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; cursor: pointer; font-size: 1rem; color: var(--text); }
.nav-item:hover { background: var(--bg); }
.nav-item.active { background: #eaf1ff; color: var(--accent); font-weight: 600; }
/* 回收站：固定在侧栏底部，与顶部 NAV 同风格 */
.nav-item.nav-bottom { margin-top: auto; }
/* 拖拽反馈：被拖拽的文件夹半透明；回收站作为放置区高亮 */
.folder-row.dragging { opacity: .45; }
.nav-item.nav-bottom.drop-active { background: color-mix(in srgb, var(--danger) 16%, transparent); color: var(--danger); }
/* 拖拽导图到文件夹时，目标文件夹高亮 */
.folder-row.drop-active { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 45%, transparent); }
.map-card.dragging { opacity: .5; }
.nav-icon { width: 18px; height: 18px; display: inline-flex; align-items: center; justify-content: center; flex: none; opacity: 0.85; }
.nav-icon svg { width: 16px; height: 16px; }

/* 文件夹树：可滚动，占满侧栏剩余空间 */
.folder-tree { flex: 1; min-height: 0; overflow-y: auto; margin-top: 6px; padding-right: 2px; }
.folder-tree::-webkit-scrollbar { width: 8px; }
.folder-tree::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }
.folder-row { display: flex; align-items: center; gap: 4px; padding: 6px 8px; border-radius: 8px; cursor: pointer; font-size: 1rem; color: var(--text); position: relative; transition: background .12s; user-select: none; }
.folder-row:hover { background: var(--bg); }
.folder-row.active { background: #eaf1ff; color: var(--accent); font-weight: 600; }
/* 多选（Ctrl/Shift）高亮：区别于「当前所在文件夹」的 active，用更淡的描边标出已选入集合的文件夹 */
.folder-row.selected { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent); }
.folder-row.selected.active { background: #eaf1ff; color: var(--accent); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 45%, transparent); font-weight: 600; }
.folder-row .twist { width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; border-radius: 5px; color: var(--text); cursor: pointer; flex: none; user-select: none; transition: background .12s, color .12s; }
.folder-row .twist:hover { background: rgba(47,111,237,.12); color: var(--accent); }
.folder-row .twist svg { width: 15px; height: 15px; transition: transform .15s ease; }
.folder-row .twist.open svg { transform: rotate(90deg); }
.folder-row .twist.leaf { cursor: default; opacity: .3; }
.folder-row .twist.leaf:hover { background: transparent; color: var(--text); }
.folder-edit { flex: 1; min-width: 0; font-size: 0.875rem; font-family: inherit; color: var(--text); height: 22px; line-height: 20px; padding: 0 5px; border: 1px solid var(--accent); border-radius: 4px; outline: none; background: var(--panel); box-sizing: border-box; }
.folder-row .folder-ico { flex: none; display: inline-flex; align-items: center; justify-content: center; }
.folder-row .folder-ico svg { width: 16px; height: 16px; }
.folder-row .folder-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; line-height: 22px; }
/* 文件夹名后的导图数量徽标 */
.folder-row .folder-count { flex: none; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: color-mix(in srgb, var(--muted) 22%, transparent); color: var(--muted); font-size: 0.6875rem; line-height: 18px; text-align: center; font-variant-numeric: tabular-nums; }
.folder-row.active .folder-count { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
/* 顶部「全部导图」后的总数徽标 */
.nav-item .nav-count { flex: none; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: color-mix(in srgb, var(--muted) 22%, transparent); color: var(--muted); font-size: 0.6875rem; line-height: 18px; text-align: center; font-variant-numeric: tabular-nums; margin-left: auto; }
.nav-item.active .nav-count { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
/* 根「我的导图」行与上方 nav 项对齐（相同图标宽度、间距、内边距） */
.folder-row.folder-root { padding: 9px 10px; gap: 10px; }
.folder-row.folder-root:hover { background: var(--bg); }
.folder-row .folder-add { border: none; background: transparent; color: var(--muted); cursor: pointer; font-size: 1.375rem; width: 30px; height: 30px; border-radius: 7px; line-height: 1; margin-left: auto; display: inline-flex; align-items: center; justify-content: center; transition: background .12s, color .12s; flex: none; }
.folder-row .folder-add:hover { background: rgba(47,111,237,.12); color: var(--accent); }

/* 轻量 toast */
.toast { position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(12px); background: #1f2329; color: #fff; padding: 10px 16px; border-radius: 10px; font-size: 0.8125rem; box-shadow: 0 8px 24px rgba(0,0,0,.22); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 50; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
/* 组件式确认 / 输入弹窗。注意：类名用 dlg- 前缀，刻意避开 daisyUI 的 .modal 组件类
   （daisyUI 的 .modal 默认 visibility:hidden; opacity:0，会让我们自己的对话框被隐藏） */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.45); display: flex; align-items: center; justify-content: center; z-index: 100; animation: modal-fade .12s ease-out; }
.dlg, .sync-modal { min-width: 320px; max-width: 90vw; background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: 0 20px 50px rgba(0,0,0,.28); animation: modal-pop .14s ease-out; }
.dlg-title, .sync-title { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.dlg-body, .sync-body { font-size: 0.875rem; color: var(--muted); line-height: 1.55; margin-bottom: 18px; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 10px; }
.dlg-btn { padding: 8px 16px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); color: var(--text); cursor: pointer; font-size: 1rem; transition: filter .12s, background .12s; }
.dlg-btn:hover { filter: brightness(1.05); }
.dlg-btn.ghost { background: transparent; }
.dlg-btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.dlg-btn.danger:hover { filter: brightness(1.06); }
.dlg-btn:disabled { opacity: .6; cursor: default; }
/* 弹窗按钮自动聚焦时浏览器会画出黑色默认轮廓（focus-visible 启发式，时有时无），统一替换为柔和聚焦环 */
.dlg-btn:focus { outline: none; }
.dlg-btn:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 2px; }
.dlg-input-wrap { padding: 4px 2px 2px; }
.dlg-input { width: 100%; box-sizing: border-box; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; font-size: 0.875rem; }
.dlg-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent); }

/* 登录时本地 / 云端内容分歧处理弹窗 */
.sync-modal {
  min-width: 380px; max-width: 92vw; padding: 0; overflow: hidden;
  background: var(--color-base-100, #fff);
  border: 1px solid var(--line); border-radius: 18px;
  box-shadow: 0 24px 60px rgba(15,23,42,.30);
  animation: modal-pop .16s ease-out;
}
.sync-head {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 22px 16px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--accent) 16%, transparent),
    color-mix(in srgb, var(--accent) 4%, transparent));
  border-bottom: 1px solid var(--line);
}
.sync-icon {
  flex: none; width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center; font-size: 20px; font-weight: 700;
  background: var(--accent); color: #fff;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 40%, transparent);
}
.sync-head-text { min-width: 0; }
.sync-title { font-size: 1.05rem; font-weight: 800; color: var(--text); }
.sync-sub { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }
.sync-options { display: flex; flex-direction: column; gap: 10px; padding: 16px 18px 20px; }
.sync-opt {
  position: relative; text-align: left; cursor: pointer; font: inherit; color: var(--text);
  display: flex; flex-direction: column; gap: 2px;
  padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px;
  background: var(--panel);
  transition: border-color .14s, background .14s, transform .08s, box-shadow .14s;
}
.sync-opt:hover {
  border-color: var(--accent); transform: translateY(-1px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 16%, transparent);
}
.sync-opt:active { transform: translateY(0); }
.sync-opt-title { font-size: 0.95rem; font-weight: 700; }
.sync-opt-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.45; }
.sync-opt-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 68%, #7c3aed));
  color: #fff;
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 36%, transparent);
}
.sync-opt-primary .sync-opt-desc { color: rgba(255,255,255,.85); }
.sync-opt-primary:hover { box-shadow: 0 14px 30px color-mix(in srgb, var(--accent) 44%, transparent); }
.sync-badge {
  position: absolute; top: -9px; right: 12px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: .03em;
  padding: 2px 8px; border-radius: 999px;
  background: #fff; color: var(--accent);
  box-shadow: 0 2px 6px rgba(0,0,0,.15);
}
.sync-opt:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 2px; }
.sync-opt[disabled], .sync-opt-disabled {
  opacity: .45; cursor: not-allowed; pointer-events: none; transform: none; box-shadow: none;
}
@keyframes modal-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-pop { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
/* 用户区（logo 下）：未登录=登录按钮；已登录=登录信息 + 下拉菜单 */
.user-area { position: relative; padding: 0 8px 12px; }
.user-login-btn {
  display: block; width: 100%; margin-top: 4px;
  padding: 9px 12px; border: 1px solid var(--accent); border-radius: 10px;
  background: var(--accent); color: #fff; cursor: pointer; font: inherit; font-weight: 600;
  transition: filter .12s;
}
.user-login-btn:hover { filter: brightness(1.05); }
.user-dropdown { position: relative; }
.user-trigger {
  display: flex; flex-direction: column; align-items: center; gap: 6px; width: 100%;
  padding: 10px 8px; border: none; background: transparent; border-radius: 10px;
  cursor: pointer; color: var(--text); font: inherit; text-align: center;
}
.user-trigger:hover { background: var(--bg); }
.user-trigger .user-info { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 0; }
.user-trigger .uname { font-weight: 600; font-size: 1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-trigger .umail { font-size: 0.75rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* 头像包裹层：让下拉箭头以圆形徽标定位在头像右下角 */
.avatar-wrap { position: relative; display: inline-flex; }
.user-trigger .caret {
  position: absolute; right: -8px; bottom: 0px; z-index: 1;
  width: 18px; height: 18px; color: var(--muted);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 999px;
  transition: transform .15s;
}
.user-trigger .caret svg { width: 100%; height: 100%; }
.user-dropdown.open .caret { transform: rotate(180deg); }
.user-menu {
  position: absolute; left: 8px; right: 8px; top: calc(100% - 2px); z-index: 40;
  margin: 0; padding: 6px; list-style: none;
  background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--block-shadow);
  display: none;
}
.user-dropdown.open .user-menu { display: block; }
.user-menu .menu-sep { height: 1px; background: var(--line); margin: 4px 4px; }
.user-menu li > a { display: block; padding: 8px 10px; border-radius: 8px; font-size: 1rem; color: var(--text); cursor: pointer; }
.user-menu li > a:hover { background: var(--bg); }
.user-menu li > a.danger { color: var(--danger); }
.user-menu li > a.danger:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); }


/* content：右侧内容区作为「区块」浮在灰底上（上/右/下留出间隙，左侧靠 column-gap） */
.content {
  grid-column: 2; grid-row: 2;
  display: flex; flex-direction: column; overflow: auto; padding: 16px 28px 20px; min-height: 0;
  margin: 0 12px 12px 0;
  background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--block-shadow);
}
/* 内容区首行：标题（左）与 导入/新建（右），在导图列表上方；非拖拽区 */
.content-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 6px 0 14px; }
.content-actions { display: flex; align-items: center; gap: 10px; }
.content-title { font-size: 1.375rem; font-weight: 700; }
.head-right { display: flex; align-items: center; gap: 10px; }

/* 无窗模式窗口控制条：最小化 / 最大化·还原 / 关闭，置于顶栏右侧 */
.win-controls { display: inline-flex; align-items: center; gap: 2px; margin-left: 4px; }
.win-ctrl {
  width: 34px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
  border: none; border-radius: 6px; background: transparent; color: var(--color-base-content, #1f2329);
  cursor: pointer; -webkit-app-region: no-drag;
}
.win-ctrl:hover { background: rgba(128, 128, 128, 0.18); }
.win-ctrl.close:hover { background: #e5484d; color: #fff; }
.win-ctrl-icon { width: 16px; height: 16px; display: block; pointer-events: none; }
.search { width: 220px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); outline: none; }
.search:focus { border-color: var(--accent); }
.new-btn { padding: 9px 14px; border: none; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer; font-size: 1rem; }
.new-btn:hover { filter: brightness(1.05); }
.new-btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.content-sub { color: var(--muted); font-size: 0.75rem; margin: 12px 0 4px; }

/* 回收站列表：以列表形式展示软删的文件夹与导图 */
.trash-list { display: flex; flex-direction: column; gap: 2px; }
.trash-group { font-size: 0.75rem; color: var(--muted); font-weight: 600; margin: 14px 4px 6px; }
.trash-row { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; font-size: 1rem; color: var(--text); user-select: none; }
.trash-row:hover { background: var(--bg); }
.trash-row.selected { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.trash-ico { width: 18px; height: 18px; display: inline-flex; align-items: center; justify-content: center; flex: none; opacity: .85; }
.trash-ico svg { width: 16px; height: 16px; }
/* 文件夹无缩略图：放大图标占位 */
.trash-ico-lg { width: 80px; height: 60px; opacity: 1; }
.trash-ico-lg svg { width: 60px; height: 60px; }
/* 导图缩略图 */
.trash-thumb { width: 80px; height: 60px; flex: none; border-radius: 6px; overflow: hidden; background: #fbfcfe; border: 1px solid var(--line); }
.trash-thumb .thumb { width: 100%; height: 100%; object-fit: cover; }
.trash-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.trash-time { color: var(--muted); font-size: 0.75rem; flex: none; }
/* 回收站工具栏：全选 / 批量删除 / 清空 / 提示 */
.trash-bar { display: flex; align-items: center; gap: 10px; padding: 6px 4px 12px; flex-wrap: wrap; }
.trash-checkall { display: inline-flex; align-items: center; gap: 6px; font-size: 1rem; color: var(--text); cursor: pointer; }
.trash-btn { padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); cursor: pointer; font-size: 1rem; transition: border-color .12s, color .12s, background .12s; }
.trash-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.trash-btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--line)); }
.trash-btn.danger:hover:not(:disabled) { background: color-mix(in srgb, var(--danger) 12%, transparent); }
.trash-btn.primary { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.trash-btn.primary:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.trash-btn:disabled { opacity: .5; cursor: not-allowed; }
.trash-hint-banner { font-size: 0.75rem; color: var(--muted); padding: 8px 0; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.trash-row .trash-cb { width: 16px; height: 16px; flex: none; cursor: pointer; }
.trash-del { border: none; background: transparent; color: var(--muted); cursor: pointer; font-size: 1rem; padding: 4px 8px; border-radius: 6px; flex: none; transition: background .12s, color .12s; }
.trash-del:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }
.trash-restore { border: none; background: transparent; color: var(--accent); cursor: pointer; font-size: 1rem; padding: 4px 8px; border-radius: 6px; flex: none; transition: background .12s, color .12s; }
.trash-restore:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }

/* templates */
.templates { display: flex; gap: 12px; overflow-x: auto; padding: 12px 0 18px; }
.tpl { min-width: 132px; padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); cursor: pointer; transition: border-color .15s; }
.tpl:hover { border-color: var(--accent); }
.tpl.primary { background: linear-gradient(135deg, #2f6fed, #5b8def); color: #fff; border: none; }
.tpl.primary .tpl-desc { color: rgba(255,255,255,.85); }
.tpl-label { font-weight: 600; font-size: 1rem; }
.tpl-desc { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }

/* map grid */
.map-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.map-grid.list { grid-template-columns: 1fr; }
.map-card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; cursor: pointer; transition: box-shadow .18s, transform .18s, border-color .18s; position: relative; box-shadow: 0 1px 2px rgba(20,30,50,.04); }
.map-card:hover { box-shadow: 0 12px 30px rgba(20,30,50,.14); transform: translateY(-3px); border-color: color-mix(in srgb, var(--line) 60%, var(--accent) 18%); }
.thumb-box { height: 130px; background: #fbfcfe; border-bottom: 1px solid var(--line); overflow: hidden; }
.thumb { width: 100%; height: 100%; object-fit: cover; }
.thumb-edge { fill: none; stroke: var(--line); stroke-width: 2; }
.thumb-node { fill: #fff; stroke: var(--line); stroke-width: 1.5; }
.thumb-node.root { fill: #eaf1ff; stroke: #c4d7ff; }
.thumb-text { font-size: 1rem; fill: var(--text); }
.map-grid.list .map-card { display: flex; }
.map-grid.list .thumb-box { width: 160px; height: 80px; border-bottom: none; border-right: 1px solid var(--line); }
.map-meta { flex: 1; padding: 10px 12px; position: relative; }
.map-title { font-weight: 600; font-size: 1rem; padding-right: 38px; }
.map-sub { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }
.map-dots { position: absolute; top: 6px; right: 6px; width: 30px; height: 30px; border: none; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; font-size: 1.125rem; line-height: 1; display: grid; place-items: center; }
.map-dots:hover { background: var(--bg); color: var(--text); }
.map-menu { position: fixed; z-index: 60; min-width: 116px; margin: 0; padding: 4px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 12px 32px rgba(20,30,50,.20); }
.map-menu-item { display: block; width: 100%; text-align: left; padding: 8px 10px; border: none; background: transparent; border-radius: 7px; font-size: 1rem; color: var(--text); cursor: pointer; font: inherit; transition: background .12s, color .12s; }
.map-menu-item:hover { background: color-mix(in srgb, var(--accent) 10%, transparent); color: var(--text); }
.map-menu-item.danger { color: var(--danger); }
.map-menu-item.danger:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }

.empty { display: none; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding: 60px 0; color: var(--muted); font-size: 0.875rem; }

/* view toggle */
.view-toggle { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.vt { width: 32px; height: 34px; border: none; background: var(--panel); cursor: pointer; font-size: 0.9375rem; color: var(--muted); display: inline-flex; align-items: center; justify-content: center; }
.vt.active { background: #eaf1ff; color: var(--accent); }
.vt-ico { width: 18px; height: 18px; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.vt-ico svg { width: 16px; height: 16px; }

/* editor 布局：上工具栏（通栏到浏览器左右边） / 中（AI 工作区 | 画布 | 主题面板，三者等高） / 下工具栏（通栏）
   整块底衬为灰色，画布与左右面板各自作为独立「区块」（圆角 + 描边 + 浅投影）浮在其上 */
.editor { display: flex; flex-direction: column; height: 100%; overflow: hidden; background: var(--editor-bg); }
.editor-body { flex: 1; display: flex; min-height: 0; gap: 12px; padding: 4px 12px 12px; }
/* 画布区块：白底圆角卡片，svg 各角由 overflow 裁切 */
.canvas-wrap {
  flex: 1; min-width: 0; display: flex; overflow: hidden;
  background: var(--color-base-100, #fff);
  border: 1px solid var(--line); border-radius: 12px;
  /* 与 AI 工作区 / 样式栏 共用 --panel-shadow：四向均匀柔影，画布背景与页面接近时仍清晰可辨边界 */
  box-shadow: var(--panel-shadow);
}
.canvas { flex: 1; width: 100%; background: var(--color-base-100, #fff); cursor: default; user-select: none; outline: none; }
.canvas.panning { cursor: grabbing; }

/* 编辑页工具栏按钮文字以基准字号呈现 */
.editor .btn { font-size: 1rem; }

/* 顶部 / 底部工具栏：通栏铺满编辑器左右（到浏览器边缘），内部留少量左右内边距 */
.toolbar-top, .toolbar-bottom {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 12px; background: transparent; border: none;
}
/* 顶部工具栏三列：左 / 中 / 右；窗口变窄时允许各组内换行 */
.toolbar-top {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
}
.tb-col { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; min-width: 0; }
/* 再窄一些：三组各占一行（多行显示），避免相互挤压/溢出 */
@media (max-width: 780px) {
  .toolbar-top { grid-template-columns: minmax(0, 1fr); justify-items: center; row-gap: 6px; }
  .tb-col { justify-content: center; row-gap: 6px; }
}
.tb-center { justify-content: center; }
.tb-right { justify-content: flex-end; }
/* 图标按钮：正方形、无底色/无边框/无悬停与激活的背景变化，只用图标表达状态；提示走 title */
.toolbar-top .btn-icon,
.toolbar-bottom .btn-icon { padding: 0; width: 2.5rem; height: 2.5rem; }
.tb-icon { width: 26px; height: 26px; display: block; }
/* 顶部工具栏品牌 logo：位于「返回」左侧，尺寸与工具图标一致（不随文字缩放） */
.toolbar-top .tb-logo { width: 26px; height: 26px; display: block; flex: none; }
/* 图标按钮取消一切底色/边框（含 hover、按下、激活态）：只保留图标本身 */
.toolbar-top .btn.btn-icon:not(.btn-ghost),
.toolbar-bottom .btn.btn-icon:not(.btn-ghost),
.toolbar-top .btn.btn-icon:not(.btn-ghost):hover,
.toolbar-bottom .btn.btn-icon:not(.btn-ghost):hover,
.toolbar-top .btn.btn-icon:not(.btn-ghost):active,
.toolbar-bottom .btn.btn-icon:not(.btn-ghost):active,
.toolbar-top .btn.btn-icon.btn-active,
.toolbar-bottom .btn.btn-icon.btn-active {
  --btn-bg: transparent;
  --btn-border: transparent;
  background-image: none;
  box-shadow: none;
}
/* 删除按钮：去掉红底，图标本身保持红色 */
.toolbar-top .btn.btn-icon.btn-error,
.toolbar-bottom .btn.btn-icon.btn-error { --btn-fg: var(--color-error, #ef4444); }
/* 激活（面板已展开）只用图标变主色表示，不加底色 */
.toolbar-top .btn.btn-icon.btn-active,
.toolbar-bottom .btn.btn-icon.btn-active { --btn-fg: var(--accent); }
/* 禁用：整枚按钮变淡且无底色（daisyUI 默认会给禁用按钮一层 10% 灰底），明确不可点 */
.toolbar-top .btn.btn-icon:disabled,
.toolbar-bottom .btn.btn-icon:disabled {
  --btn-bg: transparent; --btn-border: transparent;
  background-color: transparent; background-image: none; box-shadow: none;
  color: var(--color-base-content, #1f2329);
  opacity: .35;
}
/* 工具栏按钮：去掉激活/聚焦时 Tailwind 的粗黑 focus 环 */
.toolbar-top .btn:focus,
.toolbar-top .btn:focus-visible,
.toolbar-top .btn:active {
  outline: none;
  box-shadow: none;
}
/* 深色下 daisyUI 的 base-100/200/300 明度几乎一样（约 25%/23%/21%），
   所以按钮默认背景=base-200 与工具栏同色、边框 base-300 也几乎同色 → 未激活时整块看不见。
   这里改用 base-content 半透明叠加来做底色和边框：
   浅色 → 略深于工具栏的灰底；深色 → 略亮于工具栏的灰底，两种主题下都能看清按钮区域。
   .btn-active 保持 accent 高亮，开关/选中状态可分辨。 */
.toolbar-top .btn.btn-sm:not(.btn-ghost):not(.btn-error):not(.btn-icon):not(.zoom-trigger),
.toolbar-bottom .btn.btn-sm:not(.btn-ghost):not(.btn-error):not(.btn-icon):not(.zoom-trigger) {
  --btn-bg: color-mix(in srgb, var(--color-base-content, #1f2329) 7%, transparent);
  --btn-border: color-mix(in srgb, var(--color-base-content, #1f2329) 32%, transparent);
}
.toolbar-top .btn.btn-sm:not(.btn-ghost):not(.btn-error):not(.btn-icon):not(.zoom-trigger):hover,
.toolbar-bottom .btn.btn-sm:not(.btn-ghost):not(.btn-error):not(.btn-icon):not(.zoom-trigger):hover {
  --btn-bg: color-mix(in srgb, var(--color-base-content, #1f2329) 15%, transparent);
}
.toolbar-top .btn.btn-active:not(.btn-icon):not(.zoom-trigger),
.toolbar-bottom .btn.btn-active:not(.btn-icon):not(.zoom-trigger) {
  --btn-bg: color-mix(in srgb, var(--accent) 20%, transparent);
  --btn-fg: var(--accent);
  --btn-border: var(--accent);
}
/* 底部缩放菜单触发器：同图标按钮，无底色/无边框（含 hover、按下） */
.toolbar-bottom .btn.btn-sm.zoom-trigger,
.toolbar-bottom .btn.btn-sm.zoom-trigger:hover,
.toolbar-bottom .btn.btn-sm.zoom-trigger:active {
  --btn-bg: transparent; --btn-border: transparent;
  background-image: none; box-shadow: none;
}
/* 界面主题按钮：文字取消 daisyUI 按钮的粗体 */
.toolbar-top .ui-theme-label { font-weight: 400; }
.toolbar-bottom { justify-content: space-between; }
.toolbar-bottom .tb-right { margin-left: auto; }
/* 底部工具栏左侧：版本标识（弱化显示，不参与点击/选择） */
.toolbar-bottom .tb-version {
  flex: none; font-size: 0.75rem; color: var(--muted);
  white-space: nowrap; user-select: none;
}
.zoom-caret { font-size: 0.625rem; opacity: .7; }
.toolbar-bottom .hint { margin-left: 8px; white-space: nowrap; }
.toolbar-top .title { font-weight: 600; }
/* 顶部工具栏：导图名称可编辑 */
.title-edit { width: 1.75rem; height: 1.75rem; padding: 0; }
.title-edit-svg { width: 16px; height: 16px; opacity: .6; }
.title-edit:hover .title-edit-svg { opacity: 1; }
.title-input {
  font-weight: 600; font-size: 1rem; line-height: 1.5;
  padding: 2px 8px; border-radius: 6px;
  border: 1px solid var(--accent, #3b82f6); outline: none;
  background: var(--color-base-100, #fff); color: var(--color-base-content, #1f2329);
  min-width: 12ch;
}
/* 界面主题菜单左侧「主题皮肤」图标：与文字同高、自动跟随主题色 */
.ui-theme-skin-icon { width: 20px; height: 20px; display: inline-block; opacity: .75; }

/* 结构面板方向按钮：箭头用中性文字色（随主题深浅变化，非饱和色），与透明灰缩略图协调（激活态由 btn-active 反白） */
.dir-btn { color: var(--color-base-content); opacity: .65; }
.dir-btn[disabled] { opacity: .25; }

/* 亮色主题：默认 daisyUI light 的中性灰背景容易显得「灰蒙蒙」不清晰。
   这里在灰底上掺入一点冷色调，并提升主色/对比色饱和度，让界面更通透鲜明。
   用 html[data-theme="light"] 提升特异性（高于 daisyUI 的 [data-theme=light]），
   不受 CSS 加载顺序影响，始终覆盖默认 light 配色。 */
html[data-theme="light"] {
  --color-base-200: oklch(98% 0.006 250);
  --color-base-300: oklch(95% 0.010 250);
  --color-base-content: oklch(24% 0.02 262);
  --color-primary: oklch(58% 0.19 258);
  --color-primary-content: oklch(98% 0.01 258);
  --color-secondary: oklch(70% 0.14 210);
  --color-secondary-content: oklch(100% 0 0);
  --color-accent: oklch(74% 0.15 55);
  --color-accent-content: oklch(30% 0.05 55);
  --color-neutral: oklch(35% 0.02 262);
  --color-neutral-content: oklch(98% 0.01 258);
  --color-info: oklch(72% 0.15 230);
  --color-info-content: oklch(100% 0 0);
  --color-success: oklch(68% 0.16 160);
  --color-success-content: oklch(100% 0 0);
  --color-warning: oklch(80% 0.17 85);
  --color-warning-content: oklch(30% 0.05 60);
  --color-error: oklch(65% 0.20 25);
  --color-error-content: oklch(100% 0 0);
}

/* 结构卡片封套框：面板底已是 base-200，故卡片必须比面板亮一档（base-100）才与容器拉开层次；
   再叠一条「主题文字色淡混合」的描边 + 浅投影，深浅 / 霓虹 / 赛博等主题里都清晰可辨
   （原 base-300 描边在多数主题里与卡片底几乎同色，是“卡片看不见”的根因）。
   颜色全部取自 daisyUI 主题变量，随 data-theme 自动适配；选中态额外加一圈主色描边光晕。 */
.structure-card {
  border-color: color-mix(in srgb, var(--color-base-content) 18%, transparent);
  box-shadow: 0 1px 2px rgba(20, 30, 50, .06);
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
}
.structure-card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-base-300));
  box-shadow: 0 1px 4px color-mix(in srgb, var(--color-primary) 18%, transparent);
}
.structure-card.is-active {
  box-shadow:
    0 0 0 1px var(--color-primary),
    0 2px 10px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

/* 可关闭面板（AI 工作区 / 属性区域）：与画布同为「区块」，四边描边 + 圆角 + 浅投影 */
.ai-panel, .props-panel {
  background: var(--color-base-100, #fff); display: flex; flex-direction: column; min-height: 0;
  border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--panel-shadow);
  overflow: hidden;
}
.ai-panel { width: 260px; flex-shrink: 0; }
.props-panel { width: 240px; flex-shrink: 0; background: var(--panel, #f4f6f8); }
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; font-weight: 600; font-size: 1rem; color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.ai-empty, .props-empty { padding: 20px 14px; color: var(--muted); font-size: 0.8125rem; }
.props-body { padding: 14px 12px; display: flex; flex-direction: column; gap: 8px; }
.props-label { font-size: 0.75rem; color: var(--muted); }
.props-input {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--panel); outline: none; font-size: 0.875rem;
}
.props-input:focus { border-color: var(--accent); }

/* 主题面板（选项卡容器 + 结构分类） */
.theme-panel { width: 360px; flex-shrink: 0; }
/* 结构卡片：面板自身是 base-200 区块，卡片改用更亮的 base-100 + 描边/投影，与面板拉开层次、清晰可辨 */
.theme-panel .card { background: var(--color-base-100, #fff); }
/* 选项卡：标签栏 + 内容区，互斥切换 */
.tabs-root { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.tab-bar { display: flex; border-bottom: 1px solid var(--line); flex-shrink: 0; }
.tab-btn {
  flex: 1; padding: 10px 12px; font-size: 1rem; font-weight: 600;
  color: var(--muted); background: transparent; border: none; cursor: pointer;
  border-bottom: 2px solid transparent; transition: color .15s ease, border-color .15s ease;
}
.tab-btn:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-body { padding: 8px 12px; overflow-y: auto; min-height: 0; flex: 1; display: flex; flex-direction: column; gap: 6px; }
.theme-thumb { width: 100%; height: auto; display: block; }
.theme-thumb.thumb-missing { opacity: .3; }
.link-thumb { width: 100%; height: auto; display: block; }
/* 结构栏：上方结构滚动区 + 下方固定的「结构方向」属性区（方向统一收口到此处） */
.structure-panel { display: flex; flex-direction: column; flex: 1; min-height: 0; margin: -8px -12px; }
.structure-panel-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 10px 12px 6px; }
/* 每个结构分类标题与「上方内容」拉开留白：除首分类外，各分类块顶部增加间距 */
.structure-panel-scroll > div + div { margin-top: 16px; }
.structure-panel-props {
  flex-shrink: 0; border-top: 1px solid var(--line);
  background: var(--panel, #f4f6f8); padding: 10px 12px;
}
/* 结构卡片方向按钮：放大方向箭头字符，并用 base-content 半透明叠加做底色/边框，
   使浅色 / 深色两主题下都清晰可见（深色下 base-100/200/300 明度接近，原 btn 默认底与卡片同色而「看不见」）。
   .btn-active 保持 accent 高亮，选中方向可分辨。 */
.theme-panel .dir-btn {
  font-size: 1rem;
  line-height: 1;
  width: 1.6rem;
  height: 1.6rem;
  padding: 0;
  --btn-bg: color-mix(in srgb, var(--color-base-content, #1f2329) 7%, transparent);
  --btn-border: color-mix(in srgb, var(--color-base-content, #1f2329) 32%, transparent);
}
.theme-panel .dir-btn .dir-arrow { width: .85em; height: .85em; display: block; }
.theme-panel .dir-btn:hover {
  --btn-bg: color-mix(in srgb, var(--color-base-content, #1f2329) 15%, transparent);
}
.theme-panel .dir-btn.btn-active {
  --btn-bg: color-mix(in srgb, var(--accent) 20%, transparent);
  --btn-fg: var(--accent);
  --btn-border: var(--accent);
}
/* 配色栏：背景颜色选择器（方形色块，去掉默认边框/内边距） */
.color-input {
  -webkit-appearance: none; appearance: none; border: 1px solid var(--line); border-radius: 6px;
  width: 40px; height: 26px; padding: 2px; background: var(--panel); cursor: pointer; flex-shrink: 0;
}
.color-input::-webkit-color-swatch-wrapper { padding: 0; }
.color-input::-webkit-color-swatch { border: none; border-radius: 4px; }
.color-input::-moz-color-swatch { border: none; border-radius: 4px; }
/* 通用色块（取色器触发）：方形按 --sm，圆形复用 .custom-swatch（带该类即可） */
.color-swatch {
  position: relative; overflow: hidden; cursor: pointer; flex-shrink: 0;
  border: 1px solid var(--line); border-radius: 6px; background: var(--panel);
}
.color-swatch--sm { width: 40px; height: 26px; }
/* 背景颜色色块：在浅蓝等亮色填充上，浅描边会几乎不可见，故加深描边（更不透明、略粗） */
.bg-swatch { border: 1.5px solid color-mix(in srgb, var(--color-base-content, #1f2329) 20%, transparent); }
/* 自定义配色：中心色 + 8 分支色，一行色卡（圆形 + 描边，点击取色）
   注意：必须写在 .color-swatch 之后，否则上面方形的圆角/边框会覆盖这里的圆形与描边 */
.custom-palette { display: flex; gap: 6px; margin-top: 2px; }
.custom-swatch {
  flex: 1 1 0; min-width: 0; aspect-ratio: 1 / 1; border-radius: 50%; overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--color-base-content, #1f2329) 22%, transparent);
  cursor: pointer; position: relative; background: var(--panel);
}
.custom-swatch .color-input { width: 100%; height: 100%; padding: 0; border: none; border-radius: 50%; background: transparent; }
.swatch-layer { position: absolute; inset: 0; }
/* 透明棋盘格：用于显示含 alpha 的颜色 */
.checker-bg {
  background-color: #fff;
  background-image:
    linear-gradient(45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(-45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #c9c9c9 75%),
    linear-gradient(-45deg, transparent 75%, #c9c9c9 75%);
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
}
/* 取色器弹层：底色/文字/描边全部跟随界面风格（<html data-theme>），
   面板底取 base-100、输入框底取 base-200，深浅主题下都有层次。
   描边用 base-content 混色而非 base-300：深色主题下 base-300 与面板底几乎同色，
   面板会「融进」背景看不见轮廓（--cp-edge 同时给三角指示器描边用） */
.cp-panel {
  position: fixed; z-index: 1100; width: 288px; padding: 10px; display: flex; flex-direction: column; gap: 8px;
  max-width: calc(100vw - 16px); max-height: calc(100vh - 16px); overflow-y: auto; overflow-x: hidden;
  --panel: var(--color-base-100, #fff);
  --bg: var(--color-base-200, #f7f7f8);
  --cp-edge: color-mix(in srgb, var(--color-base-content, #1f2329) 30%, transparent);
  /* 面板内部的分隔线/输入框描边同样由文字色混出：深色主题下 base-300 线几乎看不见 */
  --line: color-mix(in srgb, var(--color-base-content, #1f2329) 16%, transparent);
  color: var(--text);
  background: var(--panel); border: 1px solid var(--cp-edge); border-radius: 10px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-base-content, #1f2329) 6%, transparent), 0 16px 40px rgba(0,0,0,.34);
}
.cp-row { display: flex; gap: 8px; align-items: stretch; }
/* 预设色卡：9 列网格（首行灰阶 + 5 行彩色） */
.cp-grid { display: grid; grid-template-columns: repeat(9, 1fr); gap: 4px; }
.cp-chip {
  width: 100%; aspect-ratio: 1 / 1; padding: 0; border-radius: 6px; cursor: pointer; background-clip: padding-box;
  border: 1px solid color-mix(in srgb, var(--color-base-content, #1f2329) 18%, transparent);
}
.cp-chip:hover { transform: scale(1.12); }
/* 当前选中色：用「面板底色描边 + 强调色外环」双层环，深浅背景都可见 */
.cp-chip--active { box-shadow: 0 0 0 2px var(--panel), 0 0 0 3.5px var(--accent); }
/* 当前风格 / 最近使用：横排小结色卡；超出一行自动换行，避免横向溢出 */
.cp-section { display: flex; flex-direction: column; gap: 6px; }
/* 分组之间用细分割线区隔（标题可点击折叠） */
.cp-section + .cp-section { border-top: 1px solid var(--line); padding-top: 8px; }
.cp-section-head { display: flex; align-items: center; gap: 4px; cursor: pointer; user-select: none; }
.cp-caret { font-size: 10px; line-height: 1; color: var(--muted); transition: transform .15s ease; }
.cp-caret--collapsed { transform: rotate(-90deg); }
.cp-section-body--hidden { display: none; }
.cp-section-title { font-size: 11px; color: var(--muted); }
.cp-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.cp-chips .cp-chip { width: 24px; flex: none; }
.cp-sv { position: relative; flex: 1 1 auto; height: 130px; border-radius: 6px; cursor: crosshair; overflow: hidden; }
.cp-hue {
  position: relative; width: 16px; border-radius: 6px; cursor: ns-resize; overflow: hidden;
  background: linear-gradient(to bottom, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);
}
.cp-alpha { position: relative; flex: 1 1 auto; height: 14px; border-radius: 6px; overflow: hidden; cursor: ew-resize; }
.cp-alpha-fill { background: linear-gradient(to right, rgba(0,0,0,0), #000); }
.cp-thumb {
  position: absolute; width: 12px; height: 12px; border-radius: 50%; border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0,0,0,.4); transform: translate(-50%, -50%); pointer-events: none; z-index: 2;
}
.cp-thumb--v { left: 50%; }
/* 横向轨道（透明度）的滑块：垂直居中于 14px 高的轨道 */
.cp-thumb--h { top: 50%; }
.cp-row--bottom { align-items: center; }
/* HEX + 透明度百分比 + 吸管 + 彩虹按钮 一行 */
.cp-row--meta { align-items: center; gap: 6px; }
.cp-hex {
  flex: 1 1 auto; min-width: 0; font-size: 12px; font-family: ui-monospace, monospace; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; background: var(--bg, #fff); color: var(--color-base-content, #1f2329);
}
/* 透明度百分比输入：外框与 HEX 输入一致，内部无框 */
.cp-alpha-num {
  display: inline-flex; align-items: center; gap: 1px; flex: none; cursor: text;
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 5px;
  background: var(--bg, #fff); color: var(--color-base-content, #1f2329); font-size: 12px;
}
.cp-alpha-num input {
  width: 24px; padding: 0; border: none; outline: none; background: transparent; color: inherit;
  font-size: 12px; font-family: ui-monospace, monospace; text-align: right;
}
.cp-alpha-pct { opacity: .55; }
/* 彩虹圆按钮：打开/收起悬浮拾色器。
   渐变色画在内层，由按钮 overflow:hidden 做圆形裁剪——直接给按钮加 conic-gradient 时，
   圆形四个切点处会有彩色毛刺溢出到圆外 */
.cp-wheel {
  position: relative; flex: none; width: 26px; height: 26px; padding: 0; border-radius: 50%; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); overflow: hidden;
}
.cp-wheel-fill {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(#f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
}
.cp-wheel--on { box-shadow: 0 0 0 2px var(--panel), 0 0 0 3.5px var(--accent); }
/* 面板三角指示器：指向被点击的色块（垂直与色块中心对齐）。
   SVG 描边确保在浅色背景上清晰可见；贴在面板边缘外，指向色块 */
.cp-arrow {
  position: fixed; z-index: 1105; width: 8px; height: 14px; pointer-events: none;
  overflow: visible;
  --panel: var(--color-base-100, #fff);   /* 与取色面板底色保持一致（跟随界面风格） */
  --cp-edge: color-mix(in srgb, var(--color-base-content, #1f2329) 30%, transparent);
}
/* 气泡箭头：整块填面板底色（压住面板边框形成开口），只给外侧两条斜边描边 */
.cp-arrow-fill { fill: var(--panel); }
.cp-arrow-line { fill: none; stroke: var(--cp-edge); stroke-width: 1; stroke-linecap: round; stroke-linejoin: round; }
/* 面板在色块右侧时箭头贴面板左边缘、指向左（水平翻转同一个三角） */
.cp-arrow--left { transform: scaleX(-1); }
/* 当前色预览块：HEX 行内显示实时颜色（含 alpha 时透出棋盘格） */
.cp-current {
  position: relative; flex: none; width: 28px; height: 28px; overflow: hidden; cursor: pointer;
  border: 1px solid var(--line); border-radius: 6px;
}
/* 悬浮拾色器（SV + 色相 + 透明度）：由彩虹圆按钮打开，浮在面板外侧 */
.cp-pop {
  position: fixed; z-index: 1200; width: 288px; padding: 10px; display: flex; flex-direction: column; gap: 8px;
  max-width: calc(100vw - 16px);
  --panel: var(--color-base-100, #fff);   /* 浮层挂在 body 上，单独取面板底色（跟随界面风格） */
  --cp-edge: color-mix(in srgb, var(--color-base-content, #1f2329) 30%, transparent);
  color: var(--text);
  background: var(--panel); border: 1px solid var(--cp-edge); border-radius: 10px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-base-content, #1f2329) 6%, transparent), 0 16px 40px rgba(0,0,0,.34);
}
/* 吸管按钮：与 HEX 输入同高的方形图标按钮，图标跟随文字色 */
.cp-drop {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; padding: 0; border-radius: 6px; border: 1px solid var(--line);
  background: var(--bg, #fff); color: var(--color-base-content, #1f2329); cursor: pointer;
}
.cp-drop:hover { background: color-mix(in srgb, var(--color-base-content, #1f2329) 8%, transparent); }
.cp-icon { width: 18px; height: 18px; display: block; }
/* 自定义配色分组：标题与色卡同属一个框，视觉成组 */
.custom-color-group {
  display: flex; flex-direction: column; gap: 8px;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  background: color-mix(in srgb, var(--color-base-content, #1f2329) 3%, transparent);
}
/* 分组/分区标题文字：全局统一（16px / 常规字重 / muted）。作用于自定义框内外的标题（自定义颜色、启用、背景颜色、配色方案、色彩分配等） */
.group-title { font-size: 16px; font-weight: 400; color: var(--muted); }
/* 从图片提取配色：拖拽上传区（点击/拖拽均可），位于自定义选项卡顶部 */
.img-palette-drop {
  position: relative; display: flex; align-items: center; gap: 12px; min-height: 76px;
  border: 1.5px dashed color-mix(in srgb, var(--color-base-content, #1f2329) 32%, transparent);
  border-radius: 10px; padding: 14px 14px; cursor: pointer; outline: none;
  background: color-mix(in srgb, var(--color-base-content, #1f2329) 3%, transparent);
  transition: border-color .15s ease, background-color .15s ease;
}
.img-palette-drop:hover, .img-palette-drop:focus-visible, .img-palette-drop--over {
  border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.img-palette-drop--busy { opacity: .6; pointer-events: none; }
.img-palette-thumb {
  width: 56px; height: 56px; flex: none; border-radius: 8px; border: 1px solid var(--line);
  background-size: cover; background-position: center; background-color: var(--panel);
  display: flex; align-items: center; justify-content: center; color: var(--muted);
}
.img-palette-thumb.has-img { border-style: solid; }
.img-palette-ico { width: 24px; height: 24px; }
.img-palette-hint { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.img-palette-big { font-size: 0.9rem; font-weight: 600; color: var(--text); }
.img-palette-sub { font-size: 0.72rem; color: var(--muted); line-height: 1.3; }
/* 配色栏背景开关：默认开启，关闭表示跟随界面主题样式 */
.bg-toggle { display: inline-flex; align-items: center; cursor: pointer; }
.bg-toggle-input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.bg-toggle-track {
  position: relative; width: 2rem; height: 1.1rem; border-radius: 999px;
  background: color-mix(in srgb, var(--color-base-content, #1f2329) 22%, transparent);
  transition: background .15s ease;
}
.bg-toggle-input:checked + .bg-toggle-track { background: var(--accent); }
.bg-toggle-thumb {
  position: absolute; top: 2px; left: 2px; width: calc(1.1rem - 4px); height: calc(1.1rem - 4px);
  border-radius: 50%; background: #fff; transition: transform .15s ease;
}
.bg-toggle-input:checked + .bg-toggle-track .bg-toggle-thumb { transform: translateX(0.9rem); }

/* 配色方案色卡：左侧色彩色带 + 右侧方案名，合并为一行（刻意用 .theme-panel 前缀提特异性，压过 .btn 默认布局） */
.theme-panel .scheme-card {
  display: flex; flex-direction: row; align-items: center; justify-content: flex-start; gap: 8px;
  height: auto; min-height: 0; padding: 6px 8px; line-height: 1.1; border-radius: 9px;
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease, transform .12s ease;
}
.theme-panel .scheme-card:hover { transform: translateY(-2px); }
.theme-panel .scheme-card .scheme-palette {
  display: flex; flex-wrap: nowrap; gap: 2px; flex: none; align-items: center;
}
.theme-panel .scheme-card .scheme-swatch {
  width: 11px; height: 11px; flex: none; border-radius: 3px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.10);
}
.theme-panel .scheme-card .scheme-label {
  font-size: 0.75rem; font-weight: 600; color: inherit; flex: 1 1 auto; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.theme-panel .scheme-card.btn-active {
  --btn-bg: color-mix(in srgb, var(--accent) 16%, transparent);
  --btn-border: var(--accent);
  --btn-fg: var(--text);
  box-shadow: 0 0 0 1px var(--accent), 0 2px 8px color-mix(in srgb, var(--accent) 20%, transparent);
}
.theme-panel .scheme-card.btn-active .scheme-label { color: var(--accent); }

/* 配色方案：亮色 / 暗色 / 自定义 子选项卡，做成紧凑的分段控件（区别于外层大选项卡） */
.theme-panel .scheme-tabs .tab-bar {
  border-bottom: none; gap: 4px; padding: 3px; margin-bottom: 2px;
  background: color-mix(in srgb, var(--color-base-content) 7%, transparent); border-radius: 10px;
}
.theme-panel .scheme-tabs .tab-btn {
  flex: 1; padding: 6px 8px; font-size: 16px; font-weight: 400;
  border-bottom: none; border-radius: 7px; color: var(--muted);
}
.theme-panel .scheme-tabs .tab-btn:hover {
  background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent);
}
.theme-panel .scheme-tabs .tab-btn.active {
  color: var(--accent); background: var(--color-base-100, #fff); border-bottom: none;
  box-shadow: var(--block-shadow);
}
.theme-panel .scheme-tabs .tab-body { padding: 8px 4px; }
/* 配色方案区：上下两段（上方选项卡可滚动，下方「色彩分配」属性区固定底部），
   与结构区（structure-panel）同构 */
.scheme-layout { display: flex; flex-direction: column; flex: 1; min-height: 0; margin: -8px -12px; }
.scheme-layout-scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 10px 12px 6px; display: flex; flex-direction: column; gap: 8px; }
.scheme-layout-props { flex-shrink: 0; border-top: 1px solid var(--line); background: var(--panel, #f4f6f8); padding: 10px 12px; }


.edge { fill: none; stroke: var(--canvas-line); stroke-width: 2; }
.node { cursor: pointer; }
.node rect { fill: var(--canvas-panel); stroke: var(--canvas-line); stroke-width: 1.5; }
.node text { font-size: 0.875rem; fill: var(--canvas-text); }
/* 主题分级字重：一/二/三/四级均加粗（字号改由 render 按 n.fontSize 内联渲染，
   与主题框尺寸共用 fontSizeForDepth 同一来源，保证改字号时框同步缩放） */
.node-text.level-1,
.node-text.level-2,
.node-text.level-3,
.node-text.level-4 { font-weight: 700; }
.node .sel-frame { display: none; fill: none; stroke: var(--canvas-accent); stroke-width: 2; }
.node.selected .sel-frame { display: block; }
.select-rect { fill: rgba(64,120,255,0.10); stroke: var(--canvas-accent); stroke-width: 1.5; stroke-dasharray: 5 4; pointer-events: none; }
/* 拖拽移动主题：原主题原位变淡，另一份不透明副本跟手移动，接近目标后显示落点提示 */
.canvas.dragging { cursor: grabbing; }
.node.dragging { opacity: .3; }
.node-ghost { pointer-events: none; filter: drop-shadow(0 3px 8px rgba(20,30,50,.22)); }
.node.drop-in .node-box { fill: #eaf1ff; stroke: var(--canvas-accent); stroke-width: 2.5; }
/* 节点内图片：默认可抓取拖拽改位置；四角可等比缩放（拖拽缩放时光标由 JS 按角区动态设置） */
.node-img { cursor: grab; }
.canvas.img-pos-dragging,
.canvas.img-pos-dragging .node-img { cursor: grabbing; }
/* 拖拽图片四边等比缩放时整体显示缩放光标（触屏双指捏合同理） */
.canvas.img-resize-dragging { cursor: nwse-resize; }
/* 虚拟剪影：松手后主题的落点（无内容的迷你框；成为子级时另有一条连线） */
.drop-preview { pointer-events: none; }
.drop-preview .preview-edge { fill: none; stroke: var(--canvas-accent); stroke-width: 2; stroke-dasharray: 5 4; opacity: .85; }
.drop-preview .preview-box { fill: rgba(47,111,237,.08); stroke: var(--canvas-accent); stroke-width: 1.5; stroke-dasharray: 6 4; }
.collapse-btn { opacity: 0; cursor: pointer; transition: opacity .12s; }
.node:hover .collapse-btn { opacity: 1; }
.node.collapsed .collapse-btn { opacity: 1; }
.collapse-btn circle { fill: var(--canvas-accent); stroke: #fff; stroke-width: 2; }
.collapse-btn text { font-size: 0.6875rem; font-weight: 700; fill: #fff; pointer-events: none; }
.node-edit {
  width: 100%; box-sizing: border-box; border: 2px solid var(--accent);
  border-radius: 4px; padding: 6px 10px; margin: 0; resize: none; overflow: hidden;
  font-family: inherit; font-size: 0.875rem; line-height: 20px; white-space: pre-wrap; word-break: break-word;
  color: var(--canvas-text); background: #fff; outline: none;
}
.hint { color: var(--muted); font-size: 0.75rem; }
.toolbar-bottom .hint { margin-left: auto; }

/* 主题右键菜单（主菜单）：最小宽度 120px，阴影加大，更醒目 */
.ctx-menu {
  min-width: 120px;
  box-shadow: 0 10px 34px rgba(15, 23, 42, 0.22);
}
/* 有二级菜单的父项（如「插入」）右侧显示三角箭头，提示可展开 */
.ctx-menu a { position: relative; }
.ctx-menu .ctx-caret {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-size: 0.7em; line-height: 1; opacity: 0.55; pointer-events: none;
}
/* 主题右键菜单的子菜单（「插入」→「本地图片」）：默认隐藏，hover/focus 父项时展开到右侧 */
.ctx-menu li { position: relative; }
/* 菜单项（主菜单与子菜单统一）：hover / 键盘聚焦 / 鼠标按下 用主题色浅染，
   避免 DaisyUI menu 默认的中性深灰底色与深色文字对比过低、不易辨认 */
.ctx-menu li > a {
  display: block; padding: 8px 12px; border-radius: 8px; font-size: 1rem; color: var(--text); cursor: pointer; white-space: nowrap;
}
.ctx-menu li > a:hover,
.ctx-menu li > a:focus,
.ctx-menu li > a:active {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}
.ctx-menu .ctx-submenu {
  position: absolute; left: 100%; top: 0; margin: 0; padding: 4px;
  list-style: none; min-width: 120px; display: none;
  background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--block-shadow); z-index: 60;
}
.ctx-menu li:hover > .ctx-submenu,
.ctx-menu li:focus-within > .ctx-submenu { display: block; }
.ctx-menu .ctx-submenu li > a {
  display: block; padding: 8px 10px; border-radius: 8px; font-size: 1rem; color: var(--text); cursor: pointer; white-space: nowrap;
}

/* 文件管理器弹窗：列出已上传文件（缩略图 + 元数据），可插入到选中主题或删除 */
.fm-overlay {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(15, 23, 42, 0.45);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.fm-panel {
  width: min(640px, 100%); max-height: 80vh; display: flex; flex-direction: column;
  background: var(--color-base-100, #fff); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--block-shadow); overflow: hidden;
}
.fm-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; border-bottom: 1px solid var(--line);
}
.fm-title { font-size: 1.05rem; font-weight: 600; margin: 0; }
.fm-toolbar { padding: 10px 14px; border-bottom: 1px solid var(--line); }
.fm-list { padding: 10px 14px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.fm-empty { padding: 24px; text-align: center; color: var(--muted); font-size: 0.9rem; }
.fm-row {
  display: flex; align-items: center; gap: 12px;
  padding: 8px; border: 1px solid var(--line); border-radius: 10px;
}
.fm-thumb { width: 44px; height: 44px; object-fit: cover; border-radius: 8px; background: var(--bg); flex: none; }
.fm-info { flex: 1; min-width: 0; }
.fm-name { font-weight: 600; font-size: 0.92rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fm-meta { color: var(--muted); font-size: 0.78rem; }
.fm-actions { display: flex; gap: 6px; flex: none; }

/* 导出弹窗：文件名输入 + 格式选择列表（格式项由代码数组生成，新增格式无需改样式） */
.export-dlg { width: min(420px, 92vw); }
.export-field { margin-bottom: 14px; }
.export-label { display: block; font-size: 0.8125rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.export-formats { display: flex; flex-direction: column; gap: 8px; }
.export-fmt {
  display: flex; align-items: center; gap: 10px;
  text-align: left; cursor: pointer; font: inherit; color: var(--text);
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel);
  transition: border-color .12s, box-shadow .12s;
}
.export-fmt:hover { border-color: var(--accent); }
.export-fmt.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 26%, transparent);
}
.export-fmt-ext { flex: none; min-width: 62px; font-size: 0.8125rem; font-weight: 700; letter-spacing: .02em; color: var(--accent); }
.export-fmt-desc { font-size: 0.8125rem; color: var(--muted); }
.export-fmt:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 2px; }

/* intro / landing — 科技风（深色品牌页，固定视觉，不随 data-theme 变化） */
.intro {
  position: relative; min-height: 100%; display: flex; flex-direction: column; overflow: hidden;
  color: #e9eefb;
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(64,120,255,.28), transparent 60%),
    radial-gradient(820px 480px at -5% 8%, rgba(126,84,255,.20), transparent 55%),
    linear-gradient(180deg, #0a1020 0%, #0b1226 55%, #090e1d 100%);
}
.intro::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(140,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,170,255,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 28%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 28%, #000 0%, transparent 78%);
}
.intro::after {
  content: ""; position: absolute; left: 50%; top: -160px; width: 520px; height: 520px; transform: translateX(-50%);
  background: radial-gradient(circle, rgba(91,141,239,.32), transparent 65%); filter: blur(20px); pointer-events: none; z-index: 0;
}
.intro > * { position: relative; z-index: 1; }

/* 顶部导航条 */
.intro-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 22px; padding: 14px 32px;
  background: rgba(10,16,32,.55); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(120,150,255,.16);
}
.intro-nav .brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.125rem; color: #fff; }
/* logo 用官方原色（紫底白字），不再加彩色光晕，避免改变其外观 */
.intro-nav .brand .logo { font-size: 1.375rem; }
.intro-links { display: flex; gap: 22px; margin-left: 10px; }
.intro-links .il { color: rgba(233,238,251,.78); font-size: 0.875rem; transition: color .15s; }
.intro-links .il:hover { color: #fff; }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav-link-btn { color: rgba(233,238,251,.85); font-size: 0.875rem; padding: 8px 6px; cursor: pointer; }
.nav-link-btn:hover { color: #fff; }

/* 科技风按钮（不依赖 daisyUI btn，避免深色背景上浅色主题变量串色） */
.btn-tech {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: 10px; font-size: 0.875rem; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: transform .12s, filter .15s, background .15s, border-color .15s;
}
.btn-tech:active { transform: translateY(1px); }
.btn-tech-primary { color: #fff; background: linear-gradient(135deg, #2f6fed, #6a5bff); box-shadow: 0 6px 18px rgba(47,111,237,.35); }
.btn-tech-primary:hover { filter: brightness(1.08); }
.btn-tech-ghost { color: #e9eefb; background: rgba(255,255,255,.04); border-color: rgba(140,170,255,.3); }
.btn-tech-ghost:hover { background: rgba(140,170,255,.12); border-color: rgba(140,170,255,.5); }
.btn-tech-lg { padding: 12px 24px; font-size: 0.9375rem; border-radius: 12px; }

/* 多语言下拉 */
.lang-trigger {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  padding: 8px 12px; border-radius: 10px; font-size: 0.875rem; color: #e9eefb;
  background: rgba(255,255,255,.04); border: 1px solid rgba(140,170,255,.28);
}
.lang-trigger:hover { background: rgba(140,170,255,.12); }
.lang-trigger .caret { font-size: 0.625rem; opacity: .7; }
.lang-menu {
  margin-top: 8px; padding: 6px; border-radius: 12px; min-width: 160px;
  max-height: 340px; overflow-y: auto;
  background: rgba(13,20,40,.92); backdrop-filter: blur(14px); border: 1px solid rgba(140,170,255,.22);
  box-shadow: 0 12px 30px rgba(0,0,0,.45); list-style: none;
}
.lang-menu li > a { display: block; padding: 9px 12px; border-radius: 8px; font-size: 0.875rem; color: #dbe4fb; cursor: pointer; }
.lang-menu li > a:hover { background: rgba(140,170,255,.14); color: #fff; }
.lang-menu li > a.active { background: rgba(91,141,239,.22); color: #fff; font-weight: 600; }

/* Hero */
.intro-hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding: 76px 32px; max-width: 1140px; margin: 0 auto; width: 100%; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 13px; border-radius: 999px;
  font-size: 0.75rem; color: #bcd0ff; background: rgba(91,141,239,.12); border: 1px solid rgba(91,141,239,.35);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: #5b8def; box-shadow: 0 0 8px #5b8def; }
.hero-text h1 { font-size: 3.125rem; line-height: 1.12; margin: 18px 0; font-weight: 800; letter-spacing: -.5px; }
.hero-text h1 .accent { background: linear-gradient(90deg, #6aa0ff, #9b7bff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { color: rgba(233,238,251,.72); font-size: 1rem; line-height: 1.75; max-width: 470px; }
.hero-cta { display: flex; gap: 14px; margin-top: 30px; }
.hero-visual {
  position: relative; border-radius: 18px; padding: 22px;
  background: linear-gradient(160deg, rgba(20,30,60,.6), rgba(12,18,38,.5));
  border: 1px solid rgba(120,150,255,.22);
  box-shadow: 0 20px 50px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.05);
}
.hero-visual svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 6px 18px rgba(47,111,237,.3)); }

/* 功能卡片 */
.intro-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 24px 32px 72px; max-width: 1140px; margin: 0 auto; width: 100%; }
.feature {
  padding: 22px 18px; border-radius: 14px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(140,170,255,.16);
  transition: transform .15s, border-color .15s, background .15s;
}
.feature:hover { transform: translateY(-4px); border-color: rgba(140,170,255,.4); background: rgba(140,170,255,.08); }
.feature-icon {
  width: 44px; height: 44px; display: grid; place-items: center; font-size: 1.375rem; border-radius: 12px;
  background: rgba(91,141,239,.14); border: 1px solid rgba(91,141,239,.3); margin-bottom: 12px;
}
.feature-title { font-weight: 700; font-size: 0.9375rem; margin-bottom: 6px; color: #fff; }
.feature-desc { color: rgba(233,238,251,.66); font-size: 0.8125rem; line-height: 1.65; }

/* 页脚 */
.intro-footer {
  margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 18px 32px; border-top: 1px solid rgba(120,150,255,.14);
  color: rgba(233,238,251,.7); font-size: 0.8125rem;
}

@media (max-width: 860px) {
  .intro-hero { grid-template-columns: 1fr; padding: 48px 24px; }
  .intro-features { grid-template-columns: repeat(2, 1fr); }
  .hero-text h1 { font-size: 2.25rem; }
  .intro-links { display: none; }
}
@media (max-width: 520px) {
  .intro-features { grid-template-columns: 1fr; }
}

/* 登录 / 注册弹窗：所有类名统一用 auth- 前缀，完全独立于 daisyUI 的 .modal / .modal-title / .modal-input，避免重名冲突 */
.auth-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.45); display: flex; align-items: center; justify-content: center; z-index: 100; animation: modal-fade .12s ease-out; }
.auth-modal {
  width: 360px; max-width: 92vw;
  min-height: 360px;
  box-sizing: border-box;
  color: var(--text);
  background:
    radial-gradient(130% 70% at 50% 0%, color-mix(in srgb, var(--accent) 20%, transparent) 0%, transparent 55%),
    linear-gradient(165deg, color-mix(in srgb, var(--accent) 12%, var(--color-base-100, #fff)) 0%, var(--color-base-100, #fff) 58%);
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line));
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 20px 50px rgba(0,0,0,.28), 0 0 22px color-mix(in srgb, var(--accent) 22%, transparent);
  animation: modal-pop .14s ease-out;
}
.auth-title { font-size: 1.05rem; font-weight: 700; letter-spacing: .04em; color: var(--accent); margin-bottom: 8px; text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 40%, transparent); }
.auth-modal .auth-title { text-align: center; }
/* 登录 / 注册 选项卡（分段控件） */
.auth-tabs { display: flex; gap: 6px; padding: 4px; margin-bottom: 14px; background: color-mix(in srgb, var(--color-base-content) 6%, transparent); border-radius: 10px; }
.auth-tab {
  flex: 1; padding: 8px 0; border: none; border-radius: 8px; background: transparent;
  color: var(--muted); font: inherit; font-size: 0.9375rem; font-weight: 600; cursor: pointer; transition: background .12s, color .12s;
}
.auth-tab.active { background: var(--color-base-100, #fff); color: var(--accent); box-shadow: var(--block-shadow); }
.auth-error { min-height: 2.2em; margin: 2px 0 8px; color: var(--danger); font-size: 0.8125rem; line-height: 1.4; }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-field { display: flex; flex-direction: column; gap: 5px; }
.auth-label { font-size: 0.8125rem; color: var(--muted); }
.auth-input { width: 100%; box-sizing: border-box; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; font-size: 0.875rem; }
.auth-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent); }
.auth-field .auth-input { width: 100%; box-sizing: border-box; }
/* 验证码 + 发送按钮 同行 */
.auth-field { position: relative; }
.auth-sendbtn {
  position: absolute; right: 6px; bottom: 6px; padding: 5px 10px; border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  border-radius: 7px; background: var(--panel); color: var(--accent); font: inherit; font-size: 0.75rem; cursor: pointer; white-space: nowrap;
}
.auth-sendbtn:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.auth-sendbtn:disabled { opacity: .55; cursor: default; }
.auth-submit {
  margin-top: 18px; width: 100%; padding: 11px 0; border: none; border-radius: 10px; cursor: pointer;
  font: inherit; font-size: 0.9375rem; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #2f6fed, #6a5bff); box-shadow: 0 6px 18px rgba(47,111,237,.3);
  transition: filter .12s, transform .12s;
}
.auth-submit:hover:not(:disabled) { filter: brightness(1.06); }
.auth-submit:active:not(:disabled) { transform: translateY(1px); }
.auth-submit:disabled { opacity: .6; cursor: default; }
.auth-switch { margin-top: 14px; text-align: center; font-size: 0.8125rem; color: var(--muted); }
.auth-switch a { color: var(--accent); cursor: pointer; }
.auth-switch a:hover { text-decoration: underline; }

/* 首页导航栏已登录用户名 */
.nav-user { color: #e9eefb; font-size: 0.875rem; padding: 8px 6px; font-weight: 600; }