:root{--blue:#1e63e9;--light:#f5f7fb;--border:#e6e8ef;--text:#1d2636;--muted:#687386;--danger:#e5484d;--green:#18a058}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;background:var(--light);color:var(--text)}button,input,select,textarea{font:inherit}button{border:0;background:var(--blue);color:white;border-radius:6px;padding:8px 14px;cursor:pointer}button.secondary{background:#eef2ff;color:#1e4fc8}button.ghost{background:white;color:#333;border:1px solid var(--border)}button.danger{background:var(--danger)}button:disabled{opacity:.6;cursor:not-allowed}.login{display:flex;height:100vh;align-items:center;justify-content:center;background:linear-gradient(135deg,#e7efff,#fff)}.login-card{width:390px;background:white;border-radius:16px;padding:30px;box-shadow:0 15px 40px rgba(0,0,0,.09)}.login h1{margin:0 0 6px;font-size:25px}.login p{color:var(--muted);margin:0 0 22px}.form-row{margin-bottom:13px}.form-row label{display:block;color:#485369;margin-bottom:6px}.form-row input,.form-row select,.form-row textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:9px 10px;background:white}.app{display:grid;grid-template-columns:260px 1fr;height:100vh}.sidebar{background:#101828;color:#d0d5dd;overflow:auto}.brand{padding:18px 18px;border-bottom:1px solid rgba(255,255,255,.08);font-weight:700;color:#fff}.brand small{display:block;color:#98a2b3;font-weight:400;margin-top:5px}.menu-group{padding:7px 10px}.menu-title{font-size:13px;color:#98a2b3;margin:11px 8px 5px}.menu-item{padding:8px 12px;border-radius:8px;cursor:pointer;font-size:14px}.menu-item:hover,.menu-item.active{background:#1d2939;color:white}.main{display:grid;grid-template-rows:56px 1fr;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:white;border-bottom:1px solid var(--border)}.content{padding:18px;overflow:auto}.card{background:white;border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:14px;box-shadow:0 1px 2px rgba(0,0,0,.02)}.card h2{margin:0 0 14px}.grid{display:grid;gap:12px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.stat{background:white;border:1px solid var(--border);border-radius:12px;padding:16px}.stat .label{color:var(--muted);font-size:13px}.stat .value{font-size:25px;margin-top:8px;font-weight:700}table{border-collapse:collapse;width:100%;background:white}th,td{border-bottom:1px solid var(--border);padding:9px;text-align:left;font-size:14px}th{background:#f8fafc;color:#475467}.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}.toolbar input,.toolbar select{border:1px solid var(--border);border-radius:8px;padding:8px;background:white}.badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#eef2ff;color:#1e4fc8;font-size:12px}.badge.green{background:#e8f7ef;color:#087443}.badge.red{background:#fff0f0;color:#c51d23}.voucher-lines input,.voucher-lines select{width:100%;border:1px solid var(--border);border-radius:6px;padding:7px}.notice{background:#fff8e6;border:1px solid #ffe1a3;padding:12px;border-radius:10px;color:#664d03}.tabs{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}.tab{padding:7px 12px;background:#f2f4f7;border-radius:999px;cursor:pointer}.tab.active{background:#dbeafe;color:#1e40af}.right{display:flex;align-items:center;gap:10px}.mobile-link{color:#1e63e9;text-decoration:none}@media(max-width:900px){.app{grid-template-columns:1fr}.sidebar{display:none}.grid.cols-4,.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}