/* ============================================================
   单证匣 DocBox — 界面与单据样式  v2「Quiet Desk」
   纯静态 / 零依赖 / 主题由 CSS 变量驱动
   结构约定：所有 class 名与 JS 一一对应，改样式不动逻辑
   ============================================================ */

:root{
  --accent:#4f46e5;
  --accent-soft:#eef2ff;
  --accent-ink:#3730a3;
  --accent-contrast:#ffffff;

  --bg:#f2f5f9;
  --surface:#ffffff;
  --surface-2:#f7f9fc;
  --surface-3:#e9edf4;
  --border:#e4e9f1;
  --border-strong:#cfd7e4;
  --text:#141d2c;
  --text-2:#556378;
  --text-3:#8b97aa;
  --shadow:0 1px 2px rgba(16,28,48,.04),0 6px 18px rgba(16,28,48,.05);
  --shadow-lg:0 24px 70px rgba(16,28,48,.20),0 4px 14px rgba(16,28,48,.08);
  --radius:12px;
  --sidebar-w:270px;
  --doc-font:11px;
  --page-pad:13mm;
}
html[data-mode="dark"]{
  --bg:#0f141d;
  --surface:#171e2a;
  --surface-2:#1d2634;
  --surface-3:#243040;
  --border:#2b3748;
  --border-strong:#3c4b60;
  --text:#e9eef7;
  --text-2:#a9b6c9;
  --text-3:#7c8ba2;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
  --shadow-lg:0 24px 70px rgba(0,0,0,.55),0 4px 14px rgba(0,0,0,.3);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;overflow:hidden;
}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--accent);text-decoration:none}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
[hidden]{display:none !important}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:10px;border:3px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:var(--text-3);background-clip:padding-box}
::-webkit-scrollbar-track{background:transparent}

/* ---------- 通用控件 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 15px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);font-size:13px;font-weight:600;white-space:nowrap;transition:.16s ease}
.btn:hover{border-color:var(--border-strong);background:var(--surface-2);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast);box-shadow:0 3px 10px rgba(79,70,229,.22),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-primary:hover{filter:brightness(1.08);background:var(--accent);border-color:var(--accent);box-shadow:0 6px 16px rgba(79,70,229,.3)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text);border-color:var(--border)}
.btn-danger{color:#d92d20;border-color:#f4cdc9;background:#fff6f5}
html[data-mode="dark"] .btn-danger{background:#3a1e1e;border-color:#6b3232;color:#ff9c92}
.btn-block{width:100%}
.btn-sm{height:32px;padding:0 12px;font-size:12px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--text-2);transition:.16s}
.icon-btn:hover{background:var(--surface-3);color:var(--text)}
.mini-btn{display:inline-flex;align-items:center;justify-content:center;min-width:27px;height:27px;padding:0 6px;border:1px solid var(--border);border-radius:7px;background:var(--surface);color:var(--text-2);font-size:14px;line-height:1;transition:.15s}
.mini-btn:hover{background:var(--surface-3);color:var(--text)}
.mini-btn .ic{width:14px;height:14px}
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:20px;padding:0 7px;border-radius:20px;background:var(--surface-3);color:var(--text-2);font-size:11px;font-weight:700}

/* ---------- 布局骨架 ----------
   三套排版共用同一份 DOM：center（预览为主舞台，默认）/ desk（经典三栏）/ focus（全宽预览 + 编辑抽屉）
   ---------------------------------------------------------------- */
.app{
  --topbar-h:64px; --dock-h:50px; --editor-w:500px;
  position:relative;display:grid;
  /* 列必须写成 minmax(0,1fr)：默认 auto 列的 min-content 会被顶栏长标题 / 按钮撑开，
     窄屏下整页被推到视口之外，右侧「保存」按钮与草稿条按钮就被裁掉 */
  grid-template-columns:minmax(0,1fr);
  grid-template-rows:var(--topbar-h) var(--dock-h) minmax(0,1fr);
  height:100vh;width:100%;overflow:hidden;
}
.app-body{position:relative;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr);min-height:0;min-width:0;overflow:hidden}
.main{min-width:0;min-height:0;display:flex;flex-direction:column}

/* 全宽顶栏 */
.topbar{display:flex;align-items:center;gap:13px;height:var(--topbar-h);padding:0 20px;background:var(--surface);border-bottom:1px solid var(--border);z-index:30;min-width:0}
.library-btn{flex:none;border:1px solid var(--border);background:var(--surface-2);width:38px;height:38px}
.library-btn:hover{background:var(--surface-3)}
.brand{display:flex;align-items:center;gap:10px;flex:none;min-width:0}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--accent);color:var(--accent-contrast);flex:none;box-shadow:0 4px 12px color-mix(in srgb,var(--accent) 32%,transparent),inset 0 1px 0 rgba(255,255,255,.25)}
.brand-mark .ic{width:20px;height:20px}
.brand-txt{display:flex;flex-direction:column;min-width:0;line-height:1.35}
.brand-txt strong{font-size:14px;font-weight:750;letter-spacing:.2px;white-space:nowrap}
.brand-txt span{font-size:10.5px;color:var(--text-3);white-space:nowrap}
.topbar-div{width:1px;height:30px;background:var(--border);flex:none;margin:0 4px}
.crumb{min-width:0;flex:1}
.crumb-line{display:flex;align-items:center;gap:10px;height:19px;margin-bottom:2px}
.crumb-type{display:inline-flex;align-items:center;padding:2px 9px;border-radius:5px;background:var(--accent-soft);color:var(--accent);font-size:10.5px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;max-width:70%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.save-state{font-size:11px;color:var(--text-3)}
.save-state.ok{color:#16a34a}
.save-state.err{color:#d92d20}
.save-state.warn{color:#b45309;font-weight:700}
.crumb h1{margin:0;font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;align-items:center;gap:8px;flex:none}
.top-sep{width:1px;height:22px;background:var(--border);margin:0 2px}

/* 第二行：5 种单证全部平铺，点击直接新建草稿 */
.dock{display:flex;align-items:center;gap:10px;height:var(--dock-h);padding:0 20px;background:var(--surface-2);border-bottom:1px solid var(--border);z-index:25;overflow:hidden}
.dock-types{display:flex;align-items:center;gap:5px;flex:0 1 auto;min-width:0;overflow:hidden}
.dock-type{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:31px;padding:0 12px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text-2);font-size:12px;font-weight:600;white-space:nowrap;flex:0 0 auto;transition:.15s}
.dock-type:hover{background:var(--surface);border-color:var(--border);color:var(--text)}
.dock-type.on{background:var(--surface);border-color:var(--border-strong);color:var(--accent);box-shadow:var(--shadow)}
.dock-type i{width:7px;height:7px;border-radius:50%;flex:none}
.dock-current{display:inline-flex;align-items:center;gap:6px;min-width:0;padding:4px 9px;border:1px solid var(--border);border-radius:20px;background:var(--surface);color:var(--text-2);font-size:11px;white-space:nowrap;overflow:hidden}
.dock-current[hidden]{display:none}
.dock-current i{width:7px;height:7px;border-radius:50%;flex:none}
.dock-current em{font-style:normal;font-size:10px;font-weight:700;padding:1px 6px;border-radius:10px;background:#fff4e5;color:#b45309}
.dock-current.unsaved{border-color:color-mix(in srgb,#d97706 35%,var(--border))}
html[data-mode="dark"] .dock-current em{background:color-mix(in srgb,#d97706 24%,var(--surface));color:#fbbf24}
.dock-spacer{flex:1;min-width:8px}
.dock-links{display:flex;align-items:center;gap:2px;flex:none}
.dock-link{display:inline-flex;align-items:center;gap:6px;height:31px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--text-2);font-size:11.5px;white-space:nowrap;transition:.15s}
.dock-link:hover{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
.dock-link .ic{width:15px;height:15px}

/* 单据库：默认是可呼出抽屉。全站以浅色为主，抽屉用白底 + 主色选中态区分，
   暗色模式下则跟随全局暗色变量，不再固定成墨蓝。 */
.sidebar{
  position:absolute;left:0;top:0;bottom:0;width:min(var(--sidebar-w),88vw);
  display:flex;flex-direction:column;background:var(--surface);
  border-right:1px solid var(--border);z-index:65;
  transform:translateX(-101%);transition:transform .24s cubic-bezier(.22,.8,.3,1);
  box-shadow:14px 0 44px rgba(20,35,60,.16);
}
.app.sidebar-open .sidebar{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;flex:none;height:52px;padding:0 12px 0 18px;border-bottom:1px solid var(--border);font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--text-2)}
.sidebar-close{display:inline-flex;margin-left:auto}
.sidebar-scroll{flex:1;overflow:auto;padding:16px 13px}
/* 单据库 / 空状态里的同款平铺入口：两列网格，5 种单证一眼可见 */
.side-new{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.side-type{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 6px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2);color:var(--text-2);font-size:11.5px;font-weight:600;white-space:nowrap;min-width:0;transition:.15s}
.side-type:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.side-type.on{border-color:color-mix(in srgb,var(--accent) 35%,var(--border));background:var(--accent-soft);color:var(--accent)}
.side-type i{width:6px;height:6px;border-radius:50%;flex:none}
.doc-empty-new{width:min(100%,360px);align-self:center}
.side-section{margin-top:20px}
.side-head{display:flex;align-items:center;justify-content:space-between;padding:0 5px 11px;font-size:10.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3)}
.searchbox{display:flex;align-items:center;gap:8px;height:37px;padding:0 11px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2);color:var(--text-3);margin-bottom:12px;transition:.16s}
.searchbox:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.searchbox .ic{width:15px;height:15px}
.searchbox input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:12.5px;color:var(--text)}
.searchbox input::placeholder{color:var(--text-3)}
.filter-chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.chip{padding:4px 10px;border:1px solid var(--border);border-radius:20px;background:transparent;color:var(--text-2);font-size:11px;white-space:nowrap;transition:.15s}
.chip:hover{border-color:var(--border-strong);color:var(--text)}
.chip.on{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast);font-weight:600}
.doc-list{display:flex;flex-direction:column;gap:4px}
.doc-item{position:relative;display:flex;gap:10px;align-items:flex-start;width:100%;padding:10px 10px 10px 12px;border:1px solid transparent;border-radius:10px;background:transparent;text-align:left;color:var(--text);transition:.16s;cursor:pointer}
.doc-item:hover{background:var(--surface-2);transform:translateX(2px)}
.doc-item.on{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 20%,transparent);box-shadow:inset 3px 0 0 var(--accent)}
.doc-dot{width:8px;height:8px;border-radius:50%;margin-top:6px;flex:none;box-shadow:0 0 0 3px rgba(20,35,60,.06)}
.doc-meta{display:block;min-width:0;flex:1}
.doc-meta .t{display:block;font-size:12.5px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.4}
.doc-meta .s{display:block;font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:3px}
.doc-type-tag{align-self:flex-start;margin-top:2px;font-size:10px;padding:2px 6px;border-radius:5px;background:var(--surface-3);color:var(--text-2);white-space:nowrap}
.doc-tail{display:flex;flex-direction:column;align-items:flex-end;gap:7px;flex:none}
.doc-del{display:grid;place-items:center;width:23px;height:23px;padding:0;border:1px solid var(--border-strong);border-radius:6px;background:var(--surface-2);color:var(--text-2);transition:.15s}
.doc-del .ic{width:13px;height:13px}
.doc-del:hover{background:#dc2626;border-color:#dc2626;color:#fff}
/* 触摸设备没有 hover，删除入口常显 */
@media (hover:none){.doc-del{background:var(--surface-2);color:var(--text-2)}}
.empty-list{padding:28px 10px;text-align:center;color:var(--text-3);font-size:12px;line-height:1.9}
.sidebar-foot{padding:12px 13px 14px;border-top:1px solid var(--border)}
.side-link{display:flex;align-items:center;gap:10px;width:100%;height:36px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--text-2);font-size:12.5px;text-align:left;transition:.15s}
.privacy{display:flex;gap:7px;align-items:flex-start;padding:9px 10px;border-radius:8px;background:var(--surface-2);color:var(--text-3);font-size:10.5px;line-height:1.6}
.privacy .ic{width:13px;height:13px;margin-top:2px}
.drawer-scrim{position:absolute;top:calc(var(--topbar-h) + var(--dock-h));left:0;right:0;bottom:0;z-index:60;background:rgba(30,45,70,.28);opacity:0;pointer-events:none;transition:opacity .2s}
.app.sidebar-open .drawer-scrim{opacity:1;pointer-events:auto}

/* ---------- 未保存草稿 ---------- */
.btn-save-draft{background:#0f8a5f;border-color:#0f8a5f;box-shadow:0 3px 10px rgba(15,138,95,.22),inset 0 1px 0 rgba(255,255,255,.18)}
.btn-save-draft:hover{filter:brightness(1.07);background:#0f8a5f;border-color:#0f8a5f;box-shadow:0 6px 16px rgba(15,138,95,.3)}
.app.draft-mode [data-action="exportPdf"]{background:transparent;border-color:var(--border);color:var(--text-2);box-shadow:none}
.app.draft-mode [data-action="exportPdf"]:hover{background:var(--surface-2);color:var(--text)}
/* 顶栏「未保存」标签本身就是一键保存入口 */
.save-state.clickable{cursor:pointer;padding:2px 8px;border-radius:20px;background:#fff4e5;border:1px solid #f3d3a3;color:#b45309;font-size:10.5px;transition:.15s}
.save-state.clickable:hover{background:#ffe8c7;border-color:#e9b96e}
html[data-mode="dark"] .save-state.clickable{background:color-mix(in srgb,#d97706 22%,var(--surface));border-color:color-mix(in srgb,#d97706 42%,var(--surface));color:#fbbf24}
.db-badge{display:inline-block;font-style:normal;font-size:10px;font-weight:700;padding:1px 6px;border-radius:10px;background:var(--surface);color:var(--accent);vertical-align:1px}
.guard-doc{display:flex;align-items:center;gap:10px;padding:11px 12px;margin-bottom:14px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2)}
.guard-doc .gd-dot{width:9px;height:9px;border-radius:50%;flex:none}
.guard-doc .gd-meta{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}
.guard-doc .gd-meta b{font-size:12.5px;color:var(--text)}
.guard-doc .gd-meta span{font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.guard-doc em{font-style:normal;font-size:10px;font-weight:700;padding:2px 7px;border-radius:10px;background:#fff4e5;color:#b45309;white-space:nowrap}
html[data-mode="dark"] .guard-doc em{background:color-mix(in srgb,#d97706 22%,var(--surface));color:#fbbf24}
/* 编辑面板在 center / focus 布局下只有 ~340px 可用，横向 flex 会把文字挤成一列，
   因此固定为「图标+文案一行 / 操作按钮右对齐一行」的换行结构 */
.draft-banner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:12px 13px;margin:-2px 0 20px;border:1px solid color-mix(in srgb,var(--accent) 22%,var(--border));border-left:3px solid var(--accent);border-radius:11px;background:var(--accent-soft)}
.db-ic{display:grid;place-items:center;width:32px;height:32px;flex:none;border-radius:9px;background:var(--surface);color:var(--accent);box-shadow:var(--shadow)}
.db-ic .ic{width:17px;height:17px}
.db-txt{flex:1 1 calc(100% - 44px);min-width:0;display:flex;flex-direction:column;gap:2px}
.db-txt b{font-size:12.5px;color:var(--text)}
.db-txt span{font-size:11px;line-height:1.6;color:var(--text-2)}
.db-actions{flex:1 1 100%;display:flex;gap:7px;justify-content:flex-end}
.draft-note{margin:0;font-size:12.5px;line-height:1.85;color:var(--text-2)}
/* 窄屏把顶栏的三个工具按钮挪到第二行导航，功能不丢 */
.dock-quick{display:none;align-items:center;gap:1px;flex:none;padding-left:6px;border-left:1px solid var(--border)}
.dock-quick .icon-btn{width:30px;height:30px}
.dock-quick .ic{width:15px;height:15px}

/* 工作区：编辑面板 + 预览舞台 */
.workspace{position:relative;flex:1;min-height:0;min-width:0;display:flex}
.editor{width:var(--editor-w);flex:none;display:flex;flex-direction:column;background:var(--surface);border-left:1px solid var(--border);min-width:360px}
.tabs{display:flex;gap:4px;padding:11px 14px;border-bottom:1px solid var(--border);overflow-x:auto;flex:none;background:var(--surface)}
.tab{padding:8px 12px;border:0;border-radius:8px;background:transparent;color:var(--text-2);font-size:12.5px;white-space:nowrap;transition:.15s;line-height:1.4}
.tab:hover{background:var(--surface-2);color:var(--text)}
.tab.on{color:var(--accent);background:var(--accent-soft);font-weight:700}
.editor-body{flex:1;overflow:auto;padding:22px 24px 80px}
.editor-close{display:none}

/* 预览画布 */
.preview-pane{flex:1;min-width:0;display:flex;flex-direction:column;background-color:var(--surface-3);background-image:radial-gradient(rgba(30,45,75,.10) .8px,transparent .8px);background-size:20px 20px}
html[data-mode="dark"] .preview-pane{background-color:#111823;background-image:radial-gradient(rgba(255,255,255,.07) .8px,transparent .8px)}
.preview-toolbar{display:flex;align-items:center;justify-content:space-between;height:48px;flex:none;padding:0 16px;border-bottom:1px solid var(--border);background:var(--surface)}
.pv-label{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--text-2);font-weight:700}
.pv-label .ic{width:15px;height:15px;color:var(--accent)}
.pv-tools{display:flex;align-items:center;gap:3px;padding:3px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2)}
.pv-tools .mini-btn{border-color:transparent;background:transparent}
.pv-tools .mini-btn:hover{background:var(--surface);color:var(--text)}
.zoom-label{min-width:40px;text-align:center;font-size:11px;color:var(--text-2);font-variant-numeric:tabular-nums;font-weight:600}
.preview-scroll{flex:1;overflow:auto;padding:32px 24px 64px}
.paper-shell{--z:.66;position:relative;margin:0 auto;width:calc(210mm * var(--z));height:calc(297mm * var(--z))}
.paper-host{width:210mm;transform-origin:top left;transform:scale(var(--z));margin:0}
.preview-reopen{position:fixed;right:24px;bottom:24px;z-index:15;display:grid;place-items:center;width:48px;height:48px;border:0;border-radius:50%;background:var(--accent);color:var(--accent-contrast);box-shadow:var(--shadow-lg);transition:.16s}
.preview-reopen:hover{transform:translateY(-2px)}
.preview-pane.collapsed{display:none}
.pv-a4{font-size:10px;font-weight:700;color:var(--text-3);padding:2px 8px;border:1px solid var(--border);border-radius:20px;background:var(--surface-2);white-space:nowrap}
.pv-pages{font-size:11px;color:var(--text-3);font-variant-numeric:tabular-nums;white-space:nowrap}
/* A4 分页预览：每张纸固定 210 × 297mm，页间留灰底与页码标签 */
.a4-stack{display:flex;flex-direction:column;align-items:center;gap:22px}
.a4-sheet-wrap{display:flex;flex-direction:column;align-items:center;gap:9px}
.a4-page.ds{height:297mm;min-height:297mm;overflow:hidden;margin:0;box-shadow:0 1px 2px rgba(20,30,50,.08),0 16px 40px rgba(20,30,50,.18);outline:1px solid rgba(20,30,50,.1)}
.a4-page-label{font-size:10.5px;font-weight:700;letter-spacing:.06em;color:var(--text-3);background:var(--surface);border:1px solid var(--border);padding:3px 10px;border-radius:20px;white-space:nowrap}
.edit-fab{display:none;position:absolute;right:26px;bottom:26px;z-index:45;align-items:center;gap:8px;height:46px;padding:0 18px;border:0;border-radius:24px;background:var(--accent);color:var(--accent-contrast);font-size:13px;font-weight:700;box-shadow:var(--shadow-lg);transition:.18s}
.edit-fab:hover{transform:translateY(-2px)}

/* ===== 模式 A：文档中心（默认）=====
   预览成为主舞台居左，编辑面板移右且分区导航竖排，单据库收进抽屉 */
.app[data-layout="center"] .workspace{flex-direction:row-reverse}
.app[data-layout="center"] .editor{
  display:grid;grid-template-columns:120px minmax(0,1fr);grid-template-rows:minmax(0,1fr);overflow:hidden;
}
.app[data-layout="center"] .tabs{
  grid-column:1;grid-row:1;flex-direction:column;align-items:stretch;gap:3px;
  padding:16px 9px;border-bottom:0;border-right:1px solid var(--border);
  background:var(--surface-2);overflow-y:auto;overflow-x:hidden;
}
.app[data-layout="center"] .tab{display:flex;align-items:center;text-align:left;padding:10px 11px;border-radius:8px}
.app[data-layout="center"] .tab.on{box-shadow:inset 3px 0 0 var(--accent);background:var(--accent-soft)}
.app[data-layout="center"] .editor-body{grid-column:2;grid-row:1;min-width:0;padding:20px 20px 70px}
.app[data-layout="center"] .preview-scroll{padding:34px 32px 70px}
.app[data-layout="center"] .preview-toolbar{padding:0 22px;height:52px}

/* ===== 模式 B：经典三栏（旧结构兜底）===== */
.app[data-layout="desk"] .app-body{grid-template-columns:var(--sidebar-w) minmax(0,1fr)}
.app[data-layout="desk"] .sidebar{
  position:relative;top:auto;bottom:auto;transform:none;grid-column:1;
  width:var(--sidebar-w);box-shadow:1px 0 0 rgba(16,28,48,.04);z-index:20;
}
.app[data-layout="desk"] .drawer-head{display:none}
.app[data-layout="desk"] .drawer-scrim,.app[data-layout="desk"] .library-btn{display:none}
.app[data-layout="desk"] .workspace{flex-direction:row}
.app[data-layout="desk"] .editor{border-left:0;border-right:1px solid var(--border);width:var(--editor-w)}
.app[data-layout="desk"] .tabs{flex-direction:row}
.app[data-layout="desk"] .editor-body{padding:22px 24px 80px}

/* ===== 模式 C：沉浸预览（全宽纸张 + 右侧编辑抽屉）===== */
.app[data-layout="focus"] .preview-scroll{padding:36px 28px 80px}
.app[data-layout="focus"] .preview-toolbar{padding:0 26px;height:54px}
.app[data-layout="focus"] .editor{
  position:absolute;right:0;top:0;bottom:0;z-index:70;width:min(480px,94vw);min-width:0;
  display:grid;grid-template-columns:120px minmax(0,1fr);grid-template-rows:minmax(0,1fr);overflow:hidden;
  transform:translateX(102%);transition:transform .26s cubic-bezier(.22,.8,.3,1);
  box-shadow:-16px 0 46px rgba(10,20,38,.22);border-left:1px solid var(--border);
}
.app[data-layout="focus"].editor-open .editor{transform:none}
.app[data-layout="focus"] .tabs{
  grid-column:1;grid-row:1;flex-direction:column;align-items:stretch;gap:3px;
  padding:16px 9px;border-bottom:0;border-right:1px solid var(--border);background:var(--surface-2);overflow-y:auto;
}
.app[data-layout="focus"] .tab{text-align:left;padding:10px 11px}
.app[data-layout="focus"] .tab.on{box-shadow:inset 3px 0 0 var(--accent);background:var(--accent-soft)}
.app[data-layout="focus"] .editor-body{grid-column:2;grid-row:1;min-width:0;padding:20px 20px 70px}
.app[data-layout="focus"] .editor-close{
  display:grid;place-items:center;position:absolute;top:12px;right:12px;z-index:3;
  width:30px;height:30px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text-2);
}
.app[data-layout="focus"] .edit-fab{display:inline-flex}
.app[data-layout="focus"].editor-open .edit-fab{display:none}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid.c3{grid-template-columns:repeat(3,1fr)}
.form-grid.c1{grid-template-columns:1fr}
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field.wide{grid-column:1 / -1}
.field label{font-size:12px;font-weight:650;color:var(--text-2)}
.field .hint{font-size:10.5px;color:var(--text-3);font-weight:400}
.inp,select.inp,textarea.inp{width:100%;min-width:0;height:38px;padding:8px 11px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2);color:var(--text);font-size:13px;outline:0;transition:.16s}
textarea.inp{height:auto;min-height:66px;resize:vertical;line-height:1.65}
.inp:hover{border-color:var(--border-strong)}
.inp:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);background:var(--surface)}
.inp::placeholder{color:var(--text-3)}
select.inp{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 16px) 16px,calc(100% - 11px) 16px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:28px}
.section-title{display:flex;align-items:center;gap:9px;margin:26px 0 14px;font-size:12.5px;font-weight:750;color:var(--text);letter-spacing:.02em}
.section-title:first-child{margin-top:2px}
.section-title::before{content:"";width:3px;height:14px;border-radius:3px;background:var(--accent);flex:none}
.section-title::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}
.section-note{font-size:11.5px;color:var(--text-3);line-height:1.8;margin:-5px 0 14px}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 13px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2);margin-bottom:9px}
.switch-row .lbl{font-size:12.5px;font-weight:650}
.switch-row .sub{font-size:10.5px;color:var(--text-3);margin-top:2px}
.switch{position:relative;width:38px;height:21px;flex:none}
.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer;z-index:2}
.switch span{position:absolute;inset:0;border-radius:20px;background:var(--border-strong);transition:.2s}
.switch span::after{content:"";position:absolute;top:2px;left:2px;width:17px;height:17px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.switch input:checked + span{background:var(--accent)}
.switch input:checked + span::after{transform:translateX(17px)}
.btn-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.inline-row{display:flex;gap:9px;align-items:center}
.inline-row .inp{flex:1}

/* ---------- 行项目编辑 ---------- */
.items-wrap{border:1px solid var(--border);border-radius:11px;overflow:hidden;background:var(--surface)}
.items-table{width:100%;border-collapse:collapse;font-size:12px}
.items-table th{padding:10px 8px;background:var(--surface-2);border-bottom:1px solid var(--border);color:var(--text-3);font-size:10.5px;font-weight:700;text-align:left;white-space:nowrap}
.items-table td{padding:6px 5px;border-bottom:1px solid var(--border);vertical-align:top}
.items-table tr:last-child td{border-bottom:0}
.items-table .inp{height:32px;padding:5px 7px;font-size:11.5px;border-color:transparent;background:var(--surface);border-radius:7px}
.items-table .inp:hover{border-color:var(--border)}
.items-table .inp:focus{border-color:var(--accent);background:var(--surface)}
.cell-img{width:46px;height:46px;border:1px dashed var(--border-strong);border-radius:8px;display:grid;place-items:center;overflow:hidden;background:var(--surface-2);cursor:pointer;position:relative;transition:.15s}
.cell-img:hover{border-color:var(--accent)}
.cell-img img{width:100%;height:100%;object-fit:cover}
.cell-img .ic{width:16px;height:16px;color:var(--text-3)}
.cell-img .del-img{position:absolute;top:0;right:0;width:16px;height:16px;border:0;border-radius:0 0 0 6px;background:rgba(0,0,0,.6);color:#fff;font-size:10px;line-height:16px;text-align:center;display:none}
.cell-img:hover .del-img{display:block}
.row-actions{display:flex;gap:3px;white-space:nowrap}
.row-actions button{width:24px;height:24px;border:0;border-radius:6px;background:transparent;color:var(--text-3);font-size:13px;line-height:1;transition:.15s}
.row-actions button:hover{background:var(--surface-3);color:var(--text)}
.row-actions button.danger:hover{background:#fee4e2;color:#d92d20}
.amount-cell{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;padding-top:12px !important;color:var(--text-2)}
.totals-box{margin-top:14px;margin-left:auto;width:min(320px,100%);font-size:12.5px}
.totals-box .tr{display:flex;justify-content:space-between;gap:12px;padding:6px 2px;color:var(--text-2)}
.totals-box .tr.grand{border-top:1.5px solid var(--accent);margin-top:8px;padding-top:11px;font-size:15px;font-weight:700;color:var(--text)}
.totals-box .tr.grand b{color:var(--accent)}
.totals-box .tr input{width:90px;height:30px;padding:4px 8px;text-align:right;border:1px solid var(--border);border-radius:7px;background:var(--surface-2);font-size:12px}

/* ---------- 主题/颜色/公司/签章 ---------- */
.swatch-row{display:flex;flex-wrap:wrap;gap:10px}
.swatch{width:38px;height:38px;border-radius:11px;border:2px solid transparent;position:relative;box-shadow:inset 0 0 0 1px rgba(0,0,0,.07);transition:.16s}
.swatch:hover{transform:translateY(-2px)}
.swatch.on{border-color:var(--text);box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--text)}
.swatch.on::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:16px;font-weight:800;text-shadow:0 1px 3px rgba(0,0,0,.45)}
.color-custom{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12px;color:var(--text-2)}
.swatch-item{display:flex;flex-direction:column;align-items:center;gap:6px;width:78px}
.sw-name{font-size:10px;line-height:1.35;text-align:center;color:var(--text-3)}
.preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:9px}
.preset-chip{display:flex;align-items:center;gap:9px;padding:10px 11px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-size:11.5px;text-align:left;cursor:pointer;transition:.15s}
.preset-chip:hover{background:var(--surface-2);border-color:var(--border-strong);transform:translateY(-1px)}
.preset-chip.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);font-weight:700;background:var(--accent-soft)}
/* 单据风格色板：每张 chip 带一张白纸缩略示意 */
.style-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:8px;margin-bottom:12px}
.style-chip{display:flex;flex-direction:column;gap:5px;padding:8px;border:1px solid var(--border);border-radius:10px;background:var(--surface);text-align:left;cursor:pointer;transition:.15s}
.style-chip:hover{border-color:var(--accent);transform:translateY(-1px)}
.style-chip.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);background:var(--accent-soft)}
.sc-prev{display:block;position:relative;height:52px;padding:6px 7px;border:1px solid var(--border);border-radius:4px;background:#fff;overflow:hidden}
.sc-prev i{position:absolute;top:0;left:0;right:0;height:6px;background:var(--sc)}
.sc-prev b{display:block;height:4px;margin-top:7px;border-radius:2px;background:#e2e8f0}
.sc-prev b:nth-of-type(1){margin-top:13px;width:70%;background:var(--sc);opacity:.55}
.sc-prev b:nth-of-type(2){width:92%}
.sc-prev b:nth-of-type(3){width:60%}
.sc-name{display:flex;justify-content:space-between;gap:4px;font-size:11.5px;font-weight:700;color:var(--text)}
.sc-name em{font-style:normal;color:var(--accent);font-weight:800}
.sc-desc{font-size:10px;color:var(--text-3);line-height:1.5}
/* 版式与内容页签 */
.layout-grid{grid-template-columns:repeat(auto-fill,minmax(132px,1fr))}
.lp-centered i{left:25%;right:25%}
.lp-centered b:nth-of-type(1){margin-left:auto;margin-right:auto;width:50%}
.lp-centered b:nth-of-type(2){margin-left:auto;margin-right:auto;width:78%}
.lp-compact i{height:4px}
.lp-compact b{margin-top:4px!important;height:3px}
.lp-letter i{display:none}
.lp-letter b:nth-of-type(1){margin-top:8px;width:88%}
.sub-section{margin:14px 0 8px;font-size:10.5px;font-weight:800;letter-spacing:.06em;color:var(--text-3)}
.switch-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:6px}
.switch-grid .switch-row{margin-bottom:0;padding:9px 10px;gap:8px}
.switch-grid .switch-row .lbl{font-size:11.5px;line-height:1.4}
.switch-grid .switch{width:34px;height:19px}
.switch-grid .switch span::after{width:15px;height:15px}
.switch-grid .switch input:checked + span::after{transform:translateX(15px)}
.pc-dot{flex:none;width:20px;height:20px;border-radius:7px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.pc-name{flex:1;min-width:0;line-height:1.35}
.pc-check{color:var(--accent);font-weight:800}
input[type="color"]{width:40px;height:34px;padding:2px;border:1px solid var(--border);border-radius:8px;background:var(--surface);cursor:pointer}
.upload-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}
.upload-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;min-height:104px;padding:10px;border:1px dashed var(--border-strong);border-radius:11px;background:var(--surface-2);cursor:pointer;text-align:center;overflow:hidden;transition:.16s}
.upload-box:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-2px)}
.upload-box img{max-width:100%;max-height:74px;object-fit:contain}
.upload-box .u-label{font-size:11px;font-weight:700;color:var(--text-2)}
.upload-box .u-hint{font-size:10px;color:var(--text-3)}
.upload-box .ic{width:21px;height:21px;color:var(--text-3)}
.sig-pad{width:100%;height:156px;border:1px solid var(--border);border-radius:10px;background:#fff;touch-action:none;cursor:crosshair;display:block}
.company-card{display:flex;align-items:center;gap:11px;padding:11px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2);margin-bottom:8px;transition:.15s}
.company-card:hover{border-color:var(--border-strong)}
.company-card.on{border-color:var(--accent);background:var(--accent-soft)}
.company-card img{width:36px;height:36px;object-fit:contain;border-radius:6px;background:#fff}
.company-card .cc-txt{flex:1;min-width:0}
.company-card .cc-txt b{display:block;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.company-card .cc-txt span{display:block;font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.storage-bar{height:8px;border-radius:8px;background:var(--surface-3);overflow:hidden;margin:10px 0 6px}
.storage-bar i{display:block;height:100%;background:var(--accent);border-radius:8px;transition:width .3s}
.storage-state{display:inline-block;padding:5px 11px;border-radius:7px;font-size:11.5px;font-weight:700;margin-bottom:5px}
.storage-state.good{background:#e8f6ee;color:#12855a}
.storage-state.bad{background:#fdecea;color:#c9372c}
.section-note.warn-note{color:#b45309;background:#fff7ed;border-left:3px solid #f59e0b;padding:9px 11px;border-radius:0 6px 6px 0;margin:10px 0}

/* ---------- 产品行卡片 ---------- */
.item-card{border:1px solid var(--border);border-radius:11px;padding:13px;margin-bottom:11px;background:var(--surface-2);box-shadow:var(--shadow)}
.item-head{display:flex;gap:10px;align-items:flex-start;margin-bottom:11px}
.item-head .grow{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}
.item-head .grow .inp{height:33px;font-size:12px}
.item-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}
.item-fields .span2{grid-column:span 2}
.item-fields .field label{font-size:10.5px;color:var(--text-3)}
.item-fields .inp{height:30px;font-size:11.5px;padding:5px 7px}
.item-foot{display:flex;justify-content:space-between;align-items:center;margin-top:10px;padding-top:9px;border-top:1px dashed var(--border);font-size:11.5px;color:var(--text-3)}
.line-amount{font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;font-size:13.5px}
.doc-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:360px;text-align:center;color:var(--text-3)}
.doc-empty .ic{width:48px;height:48px;color:var(--border-strong)}
.doc-empty h3{margin:0;color:var(--text);font-size:17px}
.doc-empty p{margin:0;font-size:12.5px;max-width:330px;line-height:1.8}

/* ---------- 设置模态内部 ---------- */
.modal-tabs{display:flex;gap:3px;margin:-20px -20px 18px;padding:0 16px;border-bottom:1px solid var(--border);overflow-x:auto}
.settings-layout{display:grid;grid-template-columns:190px 1fr;gap:18px;min-height:300px}
.settings-aside{border-right:1px solid var(--border);padding-right:14px}
.settings-aside .company-card{padding:9px}
.settings-main{min-width:0;max-height:56vh;overflow:auto;padding-right:5px}
.kv-list{font-size:12px;line-height:2;color:var(--text-2)}
.kv-list b{color:var(--text)}
.preview-ctrl label{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:var(--text-2);white-space:nowrap;cursor:pointer}
.preview-ctrl input[type="checkbox"]{accent-color:var(--accent)}
.preview-ctrl .inp{height:30px;width:70px;font-size:11.5px}
@media (max-width:700px){
  .settings-layout{grid-template-columns:1fr}
  .settings-aside{border-right:0;border-bottom:1px solid var(--border);padding:0 0 12px}
  .item-fields{grid-template-columns:repeat(2,1fr)}
}

/* ---------- 模态 / 菜单 / 提示 ---------- */
.modal-layer{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(30,45,70,.38);backdrop-filter:blur(4px)}
.modal{display:flex;flex-direction:column;width:min(760px,100%);max-height:min(88vh,900px);background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden}
.modal.wide{width:min(1080px,100%)}
.modal.narrow{width:min(480px,100%)}
.modal-head{display:flex;align-items:center;gap:10px;padding:17px 20px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,var(--surface-2),var(--surface));flex:none}
.modal-head h3{margin:0;font-size:15.5px;font-weight:700;flex:1}
.modal-head .sub{font-size:11.5px;color:var(--text-3);font-weight:400;margin-top:3px}
.modal-body{flex:1;overflow:auto;padding:20px}
.modal-foot{display:flex;align-items:center;justify-content:flex-end;gap:9px;padding:14px 20px;border-top:1px solid var(--border);background:var(--surface-2);flex:none}
.modal-foot .left{margin-right:auto;font-size:11.5px;color:var(--text-3)}
.dropdown{position:fixed;z-index:110;min-width:224px;padding:6px;border:1px solid var(--border);border-radius:12px;background:var(--surface);box-shadow:var(--shadow-lg)}
.dropdown button{display:flex;align-items:center;gap:10px;width:100%;padding:9px 11px;border:0;border-radius:8px;background:transparent;text-align:left;font-size:12.5px;color:var(--text);transition:.12s}
.dropdown button:hover{background:var(--surface-2)}
.dropdown button.danger{color:#d92d20}
.dropdown .dd-title{padding:7px 11px 5px;font-size:10px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--text-3)}
.dropdown hr{border:0;border-top:1px solid var(--border);margin:5px 0}
.dropdown.lang-dd,.dropdown.theme-dd{min-width:250px;max-height:min(82vh,680px);overflow-y:auto}
.dropdown button.on{font-weight:700;color:var(--accent);background:var(--accent-soft)}
.dropdown .dd-check{display:inline-block;flex:0 0 13px;width:13px;font-size:12px;color:var(--accent);line-height:1}
.dropdown .dd-swatch{flex:0 0 17px;width:17px;height:17px;border-radius:6px;border:1px solid rgba(0,0,0,.12);box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.toast-box{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:9px;align-items:center;pointer-events:none;max-width:92vw}
.toast{max-width:92vw;word-break:break-word}
.toast{display:flex;align-items:center;gap:9px;padding:11px 18px;border-radius:10px;background:var(--surface);color:var(--text);border:1px solid var(--border);border-left:3px solid var(--accent);font-size:12.5px;font-weight:600;box-shadow:var(--shadow-lg);animation:toastIn .2s ease}
.toast.ok{border-left-color:#0f8a5f}.toast.err{border-left-color:#c9372c}
@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 演示卡片 */
.demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.demo-card{padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--surface);box-shadow:var(--shadow);transition:.18s}
.demo-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 12px 30px rgba(16,28,48,.13)}
.demo-ic{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--accent-soft);color:var(--accent);font-size:20px;margin-bottom:12px}
.demo-card h4{margin:0 0 5px;font-size:14px;font-weight:700}
.demo-card p{margin:0 0 12px;font-size:11.5px;color:var(--text-3);line-height:1.7;min-height:40px}
.demo-tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:13px}
.demo-tags span{padding:3px 8px;border-radius:5px;background:var(--surface-3);color:var(--text-2);font-size:10px}
.demo-coverage{margin:0 0 15px;padding:10px 13px;border:1px solid color-mix(in srgb,var(--accent) 22%,var(--border));border-radius:9px;background:var(--accent-soft);font-size:11.5px;line-height:1.75;color:var(--text-2)}
.demo-cover{margin:-3px 0 12px}
.dc-label{display:block;margin-bottom:6px;font-size:10px;font-weight:800;letter-spacing:.08em;color:var(--text-3)}
.demo-types{display:flex;flex-wrap:wrap;gap:4px}
.demo-types .dt{display:inline-flex;align-items:center;gap:3px;padding:3px 6px;border:1px solid var(--border);border-radius:6px;background:var(--surface-2);font-size:9.5px;color:var(--text-2);white-space:nowrap}
.demo-types .dt i{width:5px;height:5px;border-radius:50%}
/* 「载入为：XXX」主按钮：两列网格，第 5 个通栏 */
.demo-load-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:12px;padding-top:11px;border-top:1px dashed var(--border)}
.demo-load-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:47px;padding:7px 5px;border:1px solid var(--border-strong);border-radius:9px;background:var(--surface-2);color:var(--text);transition:.15s}
.demo-load-btn:last-child{grid-column:span 2}
.demo-load-btn .dl-pre{font-size:10px;font-weight:700;letter-spacing:.05em;color:var(--text-3);line-height:1.3}
.demo-load-btn b{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:800;letter-spacing:.4px;line-height:1.4;white-space:nowrap}
.demo-load-btn b i{width:7px;height:7px;border-radius:50%;flex:none}
.demo-load-btn:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:0 5px 14px color-mix(in srgb,var(--accent) 28%,transparent)}
.demo-load-btn:hover .dl-pre{color:rgba(255,255,255,.85)}
.demo-load-btn:hover b i{box-shadow:0 0 0 1px rgba(255,255,255,.7)}
@media (max-width:420px){
  .demo-load-btn b{font-size:12.5px;gap:4px}
  .demo-load-btn .dl-pre{font-size:9.5px}
}

/* ---------- 打印预览模态 ---------- */
.preview-modal{width:min(1180px,100%);height:min(94vh,1000px)}
.preview-modal .modal-body{background:var(--surface-3);padding:24px;display:flex;flex-direction:column;align-items:center;overflow:auto}
html[data-mode="dark"] .preview-modal .modal-body{background:#111823}
.preview-ctrl{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:9px;margin-bottom:18px;padding:11px 14px;border:1px solid var(--border);border-radius:11px;background:var(--surface);box-shadow:var(--shadow);flex:none;max-width:100%}
.preview-ctrl .sep{width:1px;height:20px;background:var(--border);margin:0 4px}
.preview-stage{flex:none}
.preview-stage .paper-host{margin:0}

/* 暗色模式：--accent-soft 由 JS 写入浅色值（白纸单据表头需要），
   界面上的选中态不能在深色底上直接铺浅色块，这里单独换成半透明主色。
   注意不要覆盖 .ds 内部规则，单据在暗色下仍必须保持白纸。 */
html[data-mode="dark"] .tab.on,
html[data-mode="dark"] .crumb-type,
html[data-mode="dark"] .dropdown button.on{background:color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent)}
html[data-mode="dark"] .app[data-layout="center"] .tab.on,
html[data-mode="dark"] .app[data-layout="focus"] .tab.on{background:color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}
html[data-mode="dark"] .preset-chip.on,
html[data-mode="dark"] .company-card.on,
html[data-mode="dark"] .upload-box:hover,
html[data-mode="dark"] .demo-ic{background:color-mix(in srgb,var(--accent) 17%,transparent)}
/* --accent-soft 由 JS 写入浅色值（白纸单据表头要用），深色界面里选中态不能铺它 */
html[data-mode="dark"] .doc-item.on,
html[data-mode="dark"] .draft-banner{
  /* 与不透明的深色 surface 混合，避免 transparent 混合被解析成亮色块 */
  background:color-mix(in srgb,var(--accent) 17%,var(--surface));
  border-color:color-mix(in srgb,var(--accent) 36%,var(--surface));
}
html[data-mode="dark"] .db-ic{background:var(--surface-2)}
html[data-mode="dark"] .searchbox:focus-within{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 26%,transparent)}
html[data-mode="dark"] .inp:focus{box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 28%,transparent)}
html[data-mode="dark"] .chip.on{box-shadow:0 4px 12px rgba(0,0,0,.25)}

/* ============================================================
   单据纸张 (ds = document sheet)
   DOC-SHEET-START —— 此段由构建脚本原样同步进 docs.js 的 DOC_CSS，
   保证「屏幕预览」与「导出可打印 HTML」视觉完全一致。
   ============================================================ */
.ds{
  width:210mm;min-height:297mm;padding:var(--page-pad);margin:0 auto;
  background:#fff;color:#1f2937;
  --hair:#e8ecf3;--muted:#6b7688;--panel:#fafbfd;
  font-family:Arial,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:var(--doc-font);line-height:1.6;letter-spacing:.1px;
  box-shadow:0 1px 2px rgba(20,30,50,.08),0 18px 46px rgba(20,30,50,.16);
  outline:1px solid rgba(20,30,50,.07);border-radius:2px;
  position:relative;overflow:visible;
}
.ds *{box-sizing:border-box}
/* 抬头：主题色细带 + 公司标识 + 右侧单据信息卡 */
.ds .ds-top{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;padding:14px 0 16px;border-top:3px solid var(--accent);border-bottom:1px solid var(--hair)}
.ds .ds-brand{display:flex;gap:12px;align-items:flex-start;min-width:0;flex:1}
.ds .ds-logo{max-width:48mm;max-height:20mm;object-fit:contain;object-position:left top}
.ds .ds-co-name{font-size:1.82em;font-weight:750;color:var(--accent-ink);line-height:1.22;letter-spacing:-.2px}
.ds .ds-co-line{font-size:.88em;color:var(--muted);margin-top:4px;line-height:1.55;white-space:pre-line}
.ds .ds-titlebox{flex:none;min-width:58mm;max-width:72mm;padding:10px 13px 11px;text-align:right;background:var(--accent-soft);border:1px solid var(--hair);border-top:2px solid var(--accent);border-radius:3px}
.ds .ds-title{font-size:1.72em;font-weight:750;letter-spacing:1.5px;color:var(--accent-ink);line-height:1.15;text-transform:uppercase}
.ds .ds-title-sub{font-size:.9em;color:var(--muted);margin-top:3px}
.ds .ds-docno{font-size:.92em;margin-top:6px;color:#374151;font-variant-numeric:tabular-nums}
.ds .ds-badge{display:inline-block;margin-top:8px;padding:2px 9px;border-radius:3px;background:#fee2e2;color:#b91c1c;font-size:.78em;font-weight:800;letter-spacing:1px;text-transform:uppercase}
.ds .ds-rule{height:2px;background:linear-gradient(90deg,var(--accent) 0 16%,var(--hair) 16% 100%);margin:0 0 17px;width:100%}
.ds .ds-block{margin-bottom:14px}
.ds .ds-two{display:flex;gap:14px}
.ds .ds-two > div{flex:1;min-width:0}
.ds .ds-two.ds-block > div{padding:10px 12px;background:var(--panel);border:1px solid var(--hair);border-left:2px solid var(--accent);border-radius:0 4px 4px 0}
.ds .ds-label{display:flex;align-items:center;gap:6px;font-size:.8em;font-weight:800;color:var(--accent-ink);text-transform:uppercase;letter-spacing:.9px;margin-bottom:6px}
.ds .ds-label::before{content:"";width:2px;height:10px;border-radius:2px;background:var(--accent);flex:none}
.ds .ds-party{font-size:1.1em;font-weight:700;margin-bottom:4px;line-height:1.4;color:#111827}
.ds .ds-info{line-height:1.65;color:#4b5563;white-space:pre-line;word-break:break-word;font-size:.95em}
/* 贸易信息：3 列独立小卡，标签在上、值在下 */
.ds .ds-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-bottom:14px;padding:0;background:transparent;border:0}
.ds .ds-meta.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.ds .ds-meta .m{display:flex;flex-direction:column;gap:2px;min-width:0;padding:8px 10px;background:var(--panel);border:1px solid var(--hair);border-radius:4px;line-height:1.45}
.ds .ds-meta .k{font-size:.78em;color:var(--muted);font-weight:700;letter-spacing:.4px;text-transform:uppercase}
.ds .ds-meta .v{font-size:.95em;font-weight:700;color:#243044;word-break:break-word}
.ds table.grid{width:100%;border-collapse:collapse;table-layout:fixed;margin:6px 0 12px;border:1px solid var(--hair);border-top:2px solid var(--accent)}
.ds table.grid thead{display:table-header-group}
.ds table.grid th{
  padding:9px 8px;background:var(--accent);color:var(--accent-contrast);
  font-size:.84em;font-weight:800;text-align:left;letter-spacing:.5px;text-transform:uppercase;
  line-height:1.35;vertical-align:middle;word-break:break-word;border-bottom:0;
}
.ds table.grid th.num{text-align:right}
.ds table.grid th.ctr{text-align:center}
.ds table.grid td{padding:7px 8px;border-bottom:1px solid var(--hair);vertical-align:top;word-break:break-word;line-height:1.5;color:#374151}
.ds table.grid tbody tr:nth-child(even) td{background:#fbfcfe}
.ds table.grid tbody tr:last-child td{border-bottom:0}
.ds table.grid tr{break-inside:avoid;page-break-inside:avoid}
.ds .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.ds .ctr{text-align:center}
.ds .prod-img{width:16mm;height:16mm;object-fit:contain;border:1px solid var(--hair);border-radius:3px;background:#fff;display:block;box-shadow:0 1px 2px rgba(20,30,50,.06)}
.ds .prod-name{font-weight:700;color:#111827;line-height:1.4}
.ds .prod-sub{font-size:.86em;color:var(--muted);line-height:1.45;margin-top:2px}
.ds .ds-totals{display:flex;justify-content:flex-end;margin:8px 0 15px}
.ds .ds-totals table{width:min(88mm,62%);border-collapse:collapse;font-size:.97em;border:1px solid var(--hair);border-radius:4px;overflow:hidden}
.ds .ds-totals td{padding:5px 10px;background:#fff}
.ds .ds-totals .lbl{text-align:right;color:var(--muted)}
.ds .ds-totals .val{text-align:right;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;color:#1f2937}
.ds .ds-totals tr.grand td{background:var(--accent);color:var(--accent-contrast);border:0;padding:9px 10px;font-size:1.12em;font-weight:800;letter-spacing:.2px}
.ds .ds-amount-words{padding:9px 12px;border:1px solid var(--hair);border-left:3px solid var(--accent);background:var(--panel);font-size:.93em;margin-bottom:14px;line-height:1.65;border-radius:0 4px 4px 0}
.ds .ds-amount-words b{color:var(--accent-ink)}
.ds .ds-section{margin-top:14px;break-inside:avoid;page-break-inside:avoid}
.ds .ds-section h4{display:flex;align-items:center;gap:6px;margin:0 0 7px;padding-bottom:5px;border-bottom:1px solid var(--hair);font-size:.86em;font-weight:800;color:var(--accent-ink);text-transform:uppercase;letter-spacing:.8px}
.ds .ds-section h4::before{content:"";width:2px;height:10px;border-radius:2px;background:var(--accent);flex:none}
.ds .ds-section .body{white-space:pre-line;line-height:1.75;color:#4b5563;font-size:.94em}
.ds .ds-marks{border:1px solid var(--hair);background:var(--panel);padding:9px 11px;min-height:18mm;white-space:pre-line;line-height:1.65;font-size:.94em;border-radius:4px}
.ds .ds-bank{margin-top:14px;padding:11px 13px;border:1px solid var(--hair);border-left:3px solid var(--accent);background:var(--panel);border-radius:0 4px 4px 0}
.ds .ds-bank .k{color:var(--muted);display:inline-block;min-width:30mm;font-size:.92em}
.ds .ds-sign{display:flex;justify-content:space-between;gap:20px;margin-top:30px;break-inside:avoid;page-break-inside:avoid}
.ds .ds-sign .side{flex:1;min-width:0;position:relative;padding-top:2px}
.ds .ds-sign .line{border-top:1px solid #aab4c2;margin-top:34px;padding-top:6px;font-size:.86em;color:var(--muted);letter-spacing:.4px}
.ds .ds-sign .cap{font-size:.86em;color:var(--muted);margin-bottom:4px;letter-spacing:.4px}
.ds .ds-stamp-wrap{position:relative;min-height:26mm;margin-top:6px}
.ds .ds-stamp{position:absolute;bottom:1mm;right:2mm;max-width:38mm;max-height:38mm;object-fit:contain;opacity:.88;mix-blend-mode:multiply;pointer-events:none}
.ds .ds-signimg{max-height:18mm;max-width:45mm;object-fit:contain;display:block;margin:2px 0}
.ds .ds-signer{font-size:.9em;color:#4b5563;line-height:1.6}
.ds .ds-footer{margin-top:auto;padding-top:10px;border-top:1px solid var(--hair);display:flex;justify-content:space-between;gap:10px;font-size:.82em;color:#98a3b3;letter-spacing:.3px}
.ds .ds-watermark{position:absolute;top:46%;left:0;right:0;text-align:center;font-size:5em;font-weight:800;letter-spacing:8px;color:rgba(220,38,38,.09);transform:rotate(-28deg);pointer-events:none;white-space:nowrap}
.ds.no-accent{--accent:#334155;--accent-soft:#f1f5f9;--accent-ink:#1e293b;--accent-contrast:#fff}
.ds.no-images .prod-img{display:none}
.ds .ds-tight table.grid td{padding:4px 6px}

/* ---------- 单据风格（classic 为默认，其余 5 套在此覆盖） ---------- */
/* 现代简约：深色标题卡、无卡片边框、大量留白 */
.ds.ds-style-modern .ds-top{border-top:0;border-bottom:2px solid #111827;padding-bottom:20px}
.ds.ds-style-modern .ds-co-name{font-size:1.6em;letter-spacing:2px;text-transform:uppercase;color:#111827}
.ds.ds-style-modern .ds-titlebox{background:#111827;border:0;border-radius:0;min-width:62mm}
.ds.ds-style-modern .ds-title,.ds.ds-style-modern .ds-docno{color:#fff}
.ds.ds-style-modern .ds-title{font-size:1.5em;letter-spacing:3px}
.ds.ds-style-modern .ds-title-sub{color:#cbd5e1}
.ds.ds-style-modern .ds-rule{display:none}
.ds.ds-style-modern .ds-block{margin-top:18px;margin-bottom:18px}
.ds.ds-style-modern .ds-two.ds-block > div{background:transparent;border:0;border-top:1px solid #111827;border-radius:0;padding:10px 0}
.ds.ds-style-modern .ds-label{color:#111827}
.ds.ds-style-modern .ds-label::before{background:#111827}
.ds.ds-style-modern .ds-meta .m{background:transparent;border:0;border-bottom:1px solid var(--hair);border-radius:0;padding:7px 0}
.ds.ds-style-modern table.grid{border:0;border-top:2px solid #111827}
.ds.ds-style-modern table.grid th{background:#fff;color:#111827;border-bottom:1px solid #111827}
.ds.ds-style-modern table.grid tbody tr:nth-child(even) td{background:#fff}
.ds.ds-style-modern .ds-totals table{border:0}
.ds.ds-style-modern .ds-totals tr.grand td{background:#111827}
.ds.ds-style-modern .ds-amount-words,.ds.ds-style-modern .ds-bank{border:0;border-left:2px solid #111827;background:transparent;border-radius:0}
.ds.ds-style-modern .ds-section h4{color:#111827}
.ds.ds-style-modern .ds-section h4::before{background:#111827}
.ds.ds-style-modern .ds-marks{background:#fff}
/* 典雅衬线：衬线字体、居中抬头、双线分隔 */
.ds.ds-style-elegant{font-family:Georgia,"Times New Roman","Songti SC","SimSun",serif}
.ds.ds-style-elegant .ds-top{flex-direction:column;align-items:center;gap:9px;border-top:1px double var(--accent-ink);border-bottom:1px double var(--accent-ink);text-align:center}
.ds.ds-style-elegant .ds-brand{flex-direction:column;align-items:center;text-align:center}
.ds.ds-style-elegant .ds-co-name{font-size:2em;font-weight:600;letter-spacing:1.2px}
.ds.ds-style-elegant .ds-logo{object-position:center}
.ds.ds-style-elegant .ds-titlebox{min-width:100%;max-width:100%;text-align:center;background:transparent;border:0;border-top:1px solid var(--hair);border-radius:0;padding:9px 0 0}
.ds.ds-style-elegant .ds-title{font-weight:600;letter-spacing:4px;font-size:1.5em}
.ds.ds-style-elegant .ds-docno{display:inline-block;margin:7px 12px 0}
.ds.ds-style-elegant .ds-rule{display:none}
.ds.ds-style-elegant .ds-two.ds-block > div{background:transparent;border:0;border-bottom:1px solid var(--hair);border-radius:0;padding:9px 0}
.ds.ds-style-elegant .ds-label,.ds.ds-style-elegant .ds-section h4,.ds.ds-style-elegant table.grid th{font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif}
.ds.ds-style-elegant .ds-label{letter-spacing:1.6px}
.ds.ds-style-elegant .ds-meta .m{background:transparent;border:0;border-bottom:1px dashed var(--hair);border-radius:0;padding:6px 2px}
.ds.ds-style-elegant table.grid{border:1px solid var(--accent-ink);border-top:1px solid var(--accent-ink)}
.ds.ds-style-elegant table.grid th{background:transparent;color:var(--accent-ink);border-bottom:1px double var(--accent-ink)}
.ds.ds-style-elegant table.grid td{border-bottom:1px dotted #cbd5e1}
.ds.ds-style-elegant table.grid tbody tr:nth-child(even) td{background:transparent}
.ds.ds-style-elegant .ds-totals tr.grand td{background:transparent;color:var(--accent-ink);border-top:2px solid var(--accent-ink);border-bottom:4px double var(--accent-ink)}
.ds.ds-style-elegant .ds-amount-words,.ds.ds-style-elegant .ds-bank,.ds.ds-style-elegant .ds-marks{background:transparent;border:1px solid var(--hair);border-radius:0}
.ds.ds-style-elegant .ds-section h4{border-bottom:1px solid var(--hair)}
/* 醒目色块：整幅主题色抬头、粗分节标题 */
.ds.ds-style-bold .ds-top{background:var(--accent);border:0;padding:15px 17px;border-radius:3px}
.ds.ds-style-bold .ds-co-name,.ds.ds-style-bold .ds-co-line,.ds.ds-style-bold .ds-title,.ds.ds-style-bold .ds-title-sub,.ds.ds-style-bold .ds-docno{color:#fff}
.ds.ds-style-bold .ds-titlebox{background:rgba(255,255,255,.15);border:0;border-radius:4px}
.ds.ds-style-bold .ds-badge{background:#fff;color:#b91c1c}
.ds.ds-style-bold .ds-rule{height:4px;background:var(--accent-ink);margin:0 0 18px}
.ds.ds-style-bold .ds-two.ds-block > div{border-left-width:4px}
.ds.ds-style-bold .ds-meta .m{border-top:2px solid var(--accent)}
.ds.ds-style-bold table.grid th{background:var(--accent-ink)}
.ds.ds-style-bold .ds-totals tr.grand td{background:var(--accent-ink)}
.ds.ds-style-bold .ds-section h4{background:var(--accent-soft);border:0;padding:6px 9px;border-radius:4px}
.ds.ds-style-bold .ds-section h4::before{display:none}
.ds.ds-style-bold .ds-amount-words,.ds.ds-style-bold .ds-bank{border-left-width:4px}
/* 线框表格：全框线方格、信息区对齐成表格 */
.ds.ds-style-grid .ds-top{border:2px solid var(--accent-ink);padding:12px 14px}
.ds.ds-style-grid .ds-titlebox{background:#fff;border:2px solid var(--accent-ink);border-radius:0}
.ds.ds-style-grid .ds-rule{display:none}
.ds.ds-style-grid .ds-two.ds-block{gap:0}
.ds.ds-style-grid .ds-two.ds-block > div{background:#fff;border:1px solid var(--accent-ink);border-left:3px solid var(--accent);border-radius:0}
.ds.ds-style-grid .ds-two.ds-block > div + div{border-left:1px solid var(--accent-ink)}
.ds.ds-style-grid .ds-meta{gap:0}
.ds.ds-style-grid .ds-meta .m{border:1px solid var(--accent-ink);border-radius:0;margin:0 -1px -1px 0;background:#fff}
.ds.ds-style-grid table.grid{border:1.5px solid var(--accent-ink)}
.ds.ds-style-grid table.grid th{background:var(--accent-soft);color:var(--accent-ink);border:1px solid var(--accent-ink)}
.ds.ds-style-grid table.grid td{border:1px solid var(--hair)}
.ds.ds-style-grid .ds-totals tr.grand td{background:var(--accent-soft);color:var(--accent-ink);border:1.5px solid var(--accent-ink)}
.ds.ds-style-grid .ds-amount-words,.ds.ds-style-grid .ds-bank,.ds.ds-style-grid .ds-marks{border-radius:0;border:1px solid var(--accent-ink)}
.ds.ds-style-grid .ds-section h4{border-bottom:1.5px solid var(--accent-ink)}
/* 黑白极简：配色由渲染层统一转深灰，这里只压掉多余装饰 */
.ds.ds-style-mono .ds-top{border-top:1px solid #111827}
.ds.ds-style-mono .ds-titlebox{background:#fff;border:1px solid #111827}
.ds.ds-style-mono .ds-rule{height:1px;background:#111827}
.ds.ds-style-mono .ds-two.ds-block > div{background:#fff;border:1px solid #d1d5db;border-left:2px solid #111827}
.ds.ds-style-mono .ds-meta .m{background:#fff;border:1px solid #d1d5db}
.ds.ds-style-mono table.grid{border:1px solid #111827}
.ds.ds-style-mono table.grid th{background:#f3f4f6;color:#111827;border-bottom:1px solid #111827}
.ds.ds-style-mono table.grid tbody tr:nth-child(even) td{background:#fff}
.ds.ds-style-mono .ds-totals tr.grand td{background:#e5e7eb;color:#111827}
.ds.ds-style-mono .ds-amount-words,.ds.ds-style-mono .ds-bank,.ds.ds-style-mono .ds-marks{background:#fff;border-color:#d1d5db;border-left:2px solid #111827}
.ds.ds-style-mono .ds-section h4{color:#111827;border-bottom:1px solid #d1d5db}
.ds.ds-style-mono .ds-section h4::before{background:#111827}
.ds.ds-style-mono .prod-img{filter:grayscale(1)}

/* ===== 结构排版：与皮肤风格正交，可自由叠加（写在风格之后以覆盖装饰差异） ===== */
/* 居中正式：公司抬头与单据标题居中，适合正式发票 / 合同 */
.ds.ds-layout-centered .ds-top{flex-direction:column;align-items:center;gap:9px;text-align:center;padding-bottom:12px}
.ds.ds-layout-centered .ds-brand{flex-direction:column;align-items:center;text-align:center;gap:5px}
.ds.ds-layout-centered .ds-logo{object-position:center top}
.ds.ds-layout-centered .ds-titlebox{text-align:center;min-width:0;padding:9px 0 0;background:transparent;border:0;border-top:1px solid var(--hair)}
.ds.ds-layout-centered .ds-title{letter-spacing:2.5px}
.ds.ds-layout-centered .ds-rule{background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.ds.ds-layout-centered .ds-label{justify-content:center}
.ds.ds-layout-centered .ds-two.ds-block > div{text-align:left}
/* 紧凑明细：收紧页边距、字号与行距，一页容纳更多商品行 */
.ds.ds-layout-compact{padding:calc(var(--page-pad) * .72);font-size:calc(var(--doc-font) * .9)}
.ds.ds-layout-compact .ds-top{padding:9px 0 10px}
.ds.ds-layout-compact .ds-co-name{font-size:1.5em}
.ds.ds-layout-compact .ds-co-line{line-height:1.45}
.ds.ds-layout-compact .ds-title{font-size:1.65em}
.ds.ds-layout-compact .ds-docno{font-size:.9em;margin-top:4px}
.ds.ds-layout-compact .ds-block{margin-bottom:8px}
.ds.ds-layout-compact .ds-meta{padding:6px 9px;gap:1px 12px;margin-bottom:8px}
.ds.ds-layout-compact .ds-meta .m{line-height:1.45}
.ds.ds-layout-compact table.grid{margin:2px 0 6px}
.ds.ds-layout-compact table.grid th{padding:5px 5px}
.ds.ds-layout-compact table.grid td{padding:3px 5px}
.ds.ds-layout-compact .prod-img{width:11mm;height:11mm}
.ds.ds-layout-compact .ds-totals{margin:3px 0 8px}
.ds.ds-layout-compact .ds-totals td{padding:2px 6px}
.ds.ds-layout-compact .ds-section{margin-top:8px}
.ds.ds-layout-compact .ds-section .body{line-height:1.5}
.ds.ds-layout-compact .ds-marks{min-height:12mm;padding:5px 8px}
.ds.ds-layout-compact .ds-bank{margin-top:8px;padding:6px 9px}
.ds.ds-layout-compact .ds-sign{margin-top:14px}
.ds.ds-layout-compact .ds-sign .line{margin-top:22px}
.ds.ds-layout-compact .ds-stamp-wrap{min-height:18mm}
.ds.ds-layout-compact .ds-footer{padding-top:7px}
/* 信函条款：抬头左对齐，买卖双方上下排布，信息网格改虚线列表 */
.ds.ds-layout-letter .ds-top{border-top:0;border-bottom:2px solid var(--accent-ink);padding:4px 0 11px}
.ds.ds-layout-letter .ds-titlebox{text-align:left;min-width:0;background:transparent;border:0;padding-top:0}
.ds.ds-layout-letter .ds-title{font-size:1.7em;letter-spacing:.5px}
.ds.ds-layout-letter .ds-rule{display:none}
.ds.ds-layout-letter .ds-two.ds-block{flex-direction:column;gap:10px}
.ds.ds-layout-letter .ds-two.ds-block > div{background:transparent;border:0;border-bottom:1px dotted var(--hair);padding:0 0 8px}
.ds.ds-layout-letter .ds-meta{grid-template-columns:repeat(2,1fr);gap:0 22px;background:transparent;border:0;border-radius:0;padding:0}
.ds.ds-layout-letter .ds-meta .m{border-bottom:1px dotted var(--hair);padding:3px 0;line-height:1.5}
.ds.ds-layout-letter .ds-section h4{border-bottom:1px solid var(--hair);padding-bottom:4px}
.ds.ds-layout-letter .ds-amount-words,.ds.ds-layout-letter .ds-bank{background:transparent;border:0;border-left:2px solid var(--accent);border-radius:0;padding-left:10px}
/* DOC-SHEET-END */

/* ---------- 打印：只输出 print-root ---------- */
.print-root{display:none}
@media print{
  @page{size:A4;margin:13mm}
  html,body{width:auto;height:auto;overflow:visible;background:#fff !important}
  body > *:not(.print-root){display:none !important}
  .print-root{display:block !important}
  .print-root .ds{width:auto;min-height:0;padding:0;margin:0;box-shadow:none;outline:none;border-radius:0;font-size:var(--doc-font)}
  .print-root .ds .ds-watermark{display:none}
  .print-root .modal-layer,.print-root .toast-box{display:none !important}
  html[data-mode="dark"] .print-root .ds{background:#fff;color:#1a2130}
  *{-webkit-print-color-adjust:exact !important;print-color-adjust:exact !important}
}

/* ---------- 响应式 ----------
   五档断点：宽屏三栏 / 中屏收工具按钮 / 窄屏上下分栏 / 平板单列表单 / 手机全屏模态 */
@media (max-width:1380px){.app{--editor-w:440px}}
@media (max-width:1180px){
  .app{--editor-w:400px}
  .dock-link span{display:none}
  .dock-link{padding:0 8px}
  /* 顶栏的三个工具按钮收进第二行导航，功能一个不少，顶栏不再挤 */
  .top-tool{display:none !important}
  .dock-quick{display:flex}
  /* 中屏起 5 个类型按钮均分剩余宽度，任何一个都不被挤掉 */
  .dock-types{flex:1 1 auto}
  .dock-type{flex:1 1 0;min-width:0;padding:0 6px}
}
/* 窄屏改为上下分栏：纸张在上、表单在下，两种内容都不丢 */
@media (max-width:1080px){
  .app{--editor-w:100%}
  .hide-sm{display:none}
  .brand-txt span{display:none}
  .app[data-layout] .workspace{flex-direction:column-reverse !important}
  .app[data-layout] .editor{
    width:100% !important;min-width:0;flex:0 0 46% !important;min-height:0;display:flex !important;flex-direction:column;
    position:relative !important;transform:none !important;box-shadow:none;height:auto;bottom:auto;top:auto;right:auto;
    border-left:0;border-top:1px solid var(--border);overflow:hidden;
  }
  .app[data-layout] .tabs{
    flex-direction:row !important;align-items:center;border-right:0 !important;
    border-bottom:1px solid var(--border);background:var(--surface);padding:9px 12px !important;
  }
  .app[data-layout] .tab{flex:none;padding:8px 11px !important;text-align:center}
  .app[data-layout] .tab.on{box-shadow:none !important}
  .app[data-layout] .editor-body{width:100%;padding:18px 18px 60px !important}
  .app[data-layout] .preview-pane{flex:0 0 54% !important;min-height:0}
  .app[data-layout] .editor-close,.app[data-layout] .edit-fab{display:none !important}
  /* 经典三栏在窄屏也把单据库收成抽屉，不硬占 270px */
  .app[data-layout="desk"] .app-body{grid-template-columns:minmax(0,1fr)}
  .app[data-layout="desk"] .sidebar{position:absolute;top:0;bottom:0;transform:translateX(-101%);width:min(var(--sidebar-w),88vw)}
  .app[data-layout="desk"].sidebar-open .sidebar{transform:none}
  .app[data-layout="desk"] .library-btn{display:inline-flex}
  .app[data-layout="desk"] .drawer-head{display:flex}
  .app[data-layout="desk"] .drawer-scrim{display:block}
}
@media (max-width:760px){
  .app{--topbar-h:58px;--dock-h:44px}
  .topbar{padding:0 10px;gap:8px}
  .brand-txt,.topbar-div{display:none}
  .crumb h1{font-size:14px}
  .hide-sm,.dock-current,.pv-a4{display:none}
  .top-actions{gap:4px}
  .top-actions .btn-primary{padding:0 10px}
  .pdf-label{display:none}
  .dock{padding:0 10px;gap:6px}
  .dock-links{display:none}
  .dock-type{padding:0 4px;gap:0;font-size:11px}
  .dock-type i{display:none}
  .form-grid,.form-grid.c3{grid-template-columns:1fr}
  .switch-grid{grid-template-columns:1fr}
  .upload-grid,.demo-grid{grid-template-columns:repeat(2,1fr)}
  .app[data-layout] .editor-body{padding:16px 13px 60px !important}
  .app[data-layout] .preview-toolbar{padding:0 12px !important;height:44px !important}
  .app[data-layout] .preview-scroll{padding:18px 12px 44px !important}
  .modal-layer{padding:10px}
  .modal-foot{flex-wrap:wrap}
  .draft-banner{flex-wrap:wrap}
  .db-actions{width:100%;justify-content:flex-end}
}
@media (max-width:560px){
  .app{--topbar-h:54px;--dock-h:42px}
  .save-state{display:none}
  .icon-btn{width:32px;height:32px}
  .brand-mark{width:32px;height:32px}
  .top-actions{gap:3px}
  .btn-save-draft span{font-size:11.5px}
  .dock-quick{padding-left:3px}
  .dock-quick .icon-btn{width:27px;height:27px}
  .dock-type{padding:0 3px;font-size:10.5px}
  .modal-layer{padding:0}
  .modal{width:100%;height:100%;max-height:100%;border:0;border-radius:0}
  .modal.wide,.modal.narrow{width:100%}
  .modal-body{padding:14px}
  .modal-head{padding:14px 16px}
  .modal-foot{padding:12px 14px}
  .modal-foot .btn{flex:1 1 auto}
  .modal-tabs{margin:-14px -14px 14px;padding:0 10px}
  .preview-ctrl{gap:6px;padding:9px}
  .item-fields{grid-template-columns:repeat(2,1fr)}
  .app[data-layout] .editor-body{padding:14px 12px 50px !important}
  .app[data-layout] .tabs{padding:7px 9px !important}
}
@media (max-width:420px){
  .demo-grid,.upload-grid{grid-template-columns:1fr}
  .brand-mark{display:none}
  .topbar{padding:0 8px;gap:6px}
  .btn-save-draft{padding:0 8px}
  .btn-save-draft .ic{width:14px;height:14px}
  .dock-type{padding:0 2px;font-size:10px;letter-spacing:-.2px}
  .dock-quick .icon-btn{width:25px;height:25px}
  .item-fields{gap:7px}
}