:root {
  --navy: #1F4E79;
  --navy-d: #163a5a;
  --gold: #806000;
  --yellow: #FFF2CC;
  --cream: #FFF8E1;
  --red: #C00000;
  --line: #d9dee6;
  --bg: #f4f6f9;
  --card: #ffffff;
  --txt: #23303f;
  --muted: #7587a0;
}
* { box-sizing: border-box; }
/* 图片防盗：禁止拖拽 / 选中复制（普通用户层保护） */
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
img.thumb-img, .pv-img img { -webkit-user-drag: none; user-drag: none; }

/* 鼠标悬停放大浮层 */
.img-zoom {
  position: fixed;
  width: 320px; height: 320px;
  background-size: contain; background-repeat: no-repeat; background-position: center;
  background-color: #fff;
  border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 10px 34px rgba(0,0,0,.28);
  z-index: 200; pointer-events: none;
}
.img-zoom.hidden { display: none; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background: var(--bg);
  color: var(--txt);
  font-size: 14px;
}
/* 顶部冻结容器：品牌+公司信息+工具栏整体粘在视口顶部 */
.sticky-shell {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  box-shadow: 0 2px 8px rgba(20,40,70,.08);
}
.topbar {
  display: flex; flex-direction: column; padding: 0;
  background: var(--navy); color: #fff;
}
.topbar-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 22px;
}
.topbar-row.topbar-main { padding: 12px 22px; }
.topbar-row.topbar-company {
  background: var(--navy-d);
  font-size: 12.5px;
  padding: 7px 22px;
  flex-wrap: wrap;
  gap: 4px 10px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.topbar-row.topbar-company .co-name { font-weight: 700; letter-spacing: .2px; }
.topbar-row.topbar-company .co-item { opacity: .92; }
.topbar-row.topbar-company .co-sep { opacity: .45; }
@media (max-width: 760px) {
  .topbar-row.topbar-company .co-sep { display: none; }
  .topbar-row.topbar-company .co-item { margin-right: 12px; }
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px; height: 38px; border-radius: 8px; background: #fff; color: var(--navy);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px;
}
.topbar h1 { margin: 0; font-size: 18px; }
.topbar #subtitle { margin: 2px 0 0; font-size: 12px; opacity: .8; }
.params { display: flex; align-items: center; gap: 16px; }
.params label { font-size: 12px; display: flex; flex-direction: column; gap: 3px; }
.params input {
  width: 80px; padding: 5px 8px; border: 1px solid #2f5f8a; border-radius: 6px;
  background: rgba(255,255,255,.12); color: #fff; font-size: 14px;
}
.params input:focus { outline: 2px solid #fff; }
.totals { display: flex; gap: 10px; }
.badge {
  background: rgba(255,255,255,.15); padding: 6px 12px; border-radius: 20px;
  font-size: 13px; white-space: nowrap;
}
.badge b { font-size: 15px; }
.badge.total { background: var(--yellow); color: var(--gold); font-weight: 600; }
.badge.total b { color: var(--red); }

.toolbar {
  display: flex; align-items: center; gap: 12px; padding: 12px 22px;
  background: var(--card); border-bottom: 1px solid var(--line);
}
.filter { font-size: 12px; color: var(--muted); display: flex; flex-direction: column; gap: 3px; }
.filter select { padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; }
.spacer { flex: 1; }
.btn {
  padding: 9px 16px; border-radius: 7px; border: 1px solid transparent; cursor: pointer;
  font-size: 14px; font-weight: 600;
}
.btn.primary { background: var(--navy); color: #fff; }
.btn.primary:hover { background: var(--navy-d); }
.btn.primary:disabled { opacity: .55; cursor: progress; }
.btn.ghost { background: #fff; border-color: var(--line); color: var(--txt); }
.btn.ghost:hover { background: #f0f3f7; }

main { padding: 18px 22px 60px; max-width: 1280px; margin: 0 auto; }
.cat-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  margin-bottom: 18px; overflow: hidden;
}
.cat-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; background: var(--cream); border-bottom: 1px solid var(--line);
}
.cat-title { font-weight: 700; font-size: 15px; color: var(--navy); }
.cat-meta { font-size: 12px; color: var(--muted); margin-top: 3px; }
.cat-tier { font-size: 11px; color: #806000; margin-top: 4px; background: #fff8e1; display: inline-block; padding: 2px 8px; border-radius: 4px; }
.cat-head .btn { padding: 5px 12px; font-size: 12px; }

table { width: 100%; border-collapse: collapse; }
thead th {
  background: var(--navy); color: #fff; font-weight: 600; font-size: 12px;
  padding: 8px 10px; text-align: center;
}
tbody td { padding: 7px 10px; border-bottom: 1px solid #eef1f5; font-size: 13px; text-align: center; }
tbody tr:hover { background: #fafbfd; }
td.size { font-weight: 600; }
td.height { color: var(--muted); font-size: 13px; font-weight: 500; }
td.usd { color: var(--red); font-weight: 700; }
td.thumb img { width: 46px; height: 46px; object-fit: contain; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
.qty {
  width: 64px; padding: 5px 6px; border: 1px solid var(--line); border-radius: 5px; text-align: center;
  background: var(--yellow);
}
.sel-chk { width: 16px; height: 16px; cursor: pointer; }
.empty { padding: 30px; text-align: center; color: var(--muted); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #23303f; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 14px;
  box-shadow: 0 6px 20px rgba(0,0,0,.2); z-index: 50;
}
.toast.hidden { display: none; }
.toast.ok { background: #1f7a44; }
.toast.err { background: #b3261e; }

/* ===== 预览 PDF 模态 ===== */
.modal {
  position: fixed; inset: 0; background: rgba(20,30,45,.55);
  display: flex; flex-direction: column; z-index: 100;
}
.modal.hidden { display: none; }
.modal-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px; background: var(--navy); color: #fff;
}
.modal-title { font-weight: 700; font-size: 15px; }
.modal-actions { display: flex; gap: 10px; }
.preview-sheet {
  flex: 1; overflow: auto; padding: 22px; background: #e9edf2;
}
/* 预览内文档（白纸） */
.pv-cover { background: #fff; padding: 30px 34px; border-radius: 8px 8px 0 0; border-bottom: 3px solid var(--navy); }
.pv-co { font-size: 20px; font-weight: 800; color: var(--navy); }
.pv-ct { font-size: 15px; color: var(--gold); font-weight: 600; margin-top: 2px; }
.pv-cm { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.6; }
.pv-date { font-size: 12px; color: var(--muted); margin-top: 10px; }
.pv-cat { background: #fff; padding: 0 34px 18px; }
.pv-cat:last-of-type { border-radius: 0 0 8px 8px; }
.pv-cat-h { font-size: 15px; font-weight: 700; color: var(--navy); padding: 16px 0 8px; border-bottom: 2px solid var(--cream); margin-bottom: 8px; }
.pv-tbl { width: 100%; border-collapse: collapse; }
.pv-tbl th { background: var(--navy); color: #fff; font-size: 12px; padding: 7px 8px; text-align: center; }
.pv-tbl td { padding: 6px 8px; border-bottom: 1px solid #eef1f5; font-size: 13px; text-align: center; }
.pv-tbl tfoot td { font-weight: 700; background: var(--cream); }
.pv-img img { width: 40px; height: 40px; object-fit: contain; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
.pv-usd { color: var(--red); font-weight: 700; }
.pv-rt { text-align: right !important; }
.pv-grand { background: var(--yellow); color: var(--gold); font-size: 16px; font-weight: 700; padding: 14px 34px; border-radius: 0 0 8px 8px; }
.pv-grand b { color: var(--red); font-size: 18px; }
.pv-break { height: 0; }

/* ===== 打印（存为 PDF）===== */
@media print {
  body * { visibility: hidden; }
  #previewModal, #previewModal * { visibility: visible; }
  #previewModal {
    position: absolute; inset: 0; background: #fff; overflow: visible; display: block !important;
  }
  #previewModal .modal-bar, .no-print { display: none !important; }
  .preview-sheet { padding: 0; overflow: visible; background: #fff; }
  .pv-cat-h { page-break-after: avoid; }
  .pv-tbl tr { page-break-inside: avoid; }
  .pv-break { page-break-before: always; }
}