:root{--bg:#f5f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--primary:#2563eb;--danger:#dc2626;--ok:#16a34a;--warn:#d97706}
*{box-sizing:border-box}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
.hidden{display:none!important}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
aside{background:#0f172a;color:#fff;padding:22px 14px}.brand{font-size:20px;font-weight:700;margin-bottom:20px}.brand small{display:block;color:#94a3b8;font-size:12px;margin-top:5px}
nav button{display:block;width:100%;border:0;background:transparent;color:#cbd5e1;padding:11px 12px;text-align:left;border-radius:8px;cursor:pointer;margin:4px 0}
nav button.active,nav button:hover{background:#1e293b;color:#fff}
main{padding:22px}.top{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:16px}h1{font-size:24px;margin:0}
.actions{display:flex;gap:8px;flex-wrap:wrap}.btn{border:1px solid var(--line);background:#fff;padding:9px 12px;border-radius:8px;cursor:pointer}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn.small{padding:6px 9px;font-size:12px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 20px rgba(15,23,42,.06)}
.stat{padding:16px}.stat .n{font-size:28px;font-weight:700;margin-top:6px}.stat .t{color:var(--muted);font-size:13px}.panel{padding:14px}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}.toolbar input,.toolbar select,.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:8px;padding:9px;background:#fff}
.table-wrap{overflow:auto;max-height:68vh;border:1px solid var(--line);border-radius:9px}table{border-collapse:collapse;width:100%}
th,td{padding:10px;border-bottom:1px solid var(--line);font-size:13px;text-align:left;white-space:nowrap}th{background:#f8fafc;position:sticky;top:0}
.page{display:none}.page.active{display:block}.badge{padding:3px 7px;border-radius:999px;font-size:12px;font-weight:700}
.red{background:#fee2e2;color:#991b1b}.yellow{background:#fef3c7;color:#92400e}.green{background:#dcfce7;color:#166534}.blue{background:#dbeafe;color:#1e40af}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;padding:18px;z-index:20}
.modal.show{display:flex}.modal-box{width:min(820px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:12px;padding:18px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.field{display:flex;flex-direction:column;gap:5px}.field.full{grid-column:1/-1}
.field label{font-size:13px;color:#475569}.foot{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.authbox{width:min(430px,100%);background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.msg{margin-top:12px;padding:10px;border-radius:8px;background:#f8fafc;font-size:13px;white-space:pre-wrap;min-height:20px}
.ok{background:#dcfce7;color:#166534}.err{background:#fee2e2;color:#991b1b}.info{background:#dbeafe;color:#1e40af}
.note{color:var(--muted);font-size:12px;line-height:1.6}.empty{padding:28px;text-align:center;color:var(--muted)}
.timeline{border-left:3px solid #dbeafe;margin-left:8px;padding-left:18px}.timeline-item{position:relative;padding:0 0 18px}.timeline-item:before{content:"";position:absolute;left:-25px;top:3px;width:12px;height:12px;border-radius:50%;background:#2563eb;border:3px solid #dbeafe}
.timeline-date{font-size:12px;color:var(--muted)}.timeline-title{font-weight:700;margin:4px 0}.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:18px}.detail-box{background:#f8fafc;border-radius:8px;padding:10px}
.import-box{border:2px dashed #cbd5e1;border-radius:10px;padding:18px;text-align:center;background:#f8fafc}
@media(max-width:850px){.shell{grid-template-columns:1fr}aside{position:static}.cards{grid-template-columns:1fr 1fr}.grid,.detail-grid{grid-template-columns:1fr}}

.mail-editor{min-height:260px;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff;line-height:1.65;overflow:auto}
.mail-editor:focus{outline:2px solid #bfdbfe;border-color:#60a5fa}
.mail-editor img{max-width:100%;height:auto;border-radius:8px;margin:8px 0;cursor:pointer}.mail-editor img.selected-mail-image{outline:3px solid #60a5fa;outline-offset:2px}
.editor-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.attachment-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.attachment-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 10px;background:#f8fafc;border:1px solid var(--line);border-radius:8px}
.progress-track{height:10px;border-radius:999px;background:#e5e7eb;overflow:hidden;margin:10px 0}
.progress-bar{height:100%;width:0;background:#2563eb;transition:width .2s}
.import-summary{padding:14px;border-radius:10px;margin-top:12px}
.import-summary.ok{background:#dcfce7;color:#166534}
.import-summary.warn{background:#fef3c7;color:#92400e}
.import-summary.err{background:#fee2e2;color:#991b1b}