:root{--blue:#376cf6;--navy:#172d69;--bg:#f4f7fb;--text:#26344f;--muted:#7b879f;--line:#e1e7f0;--danger:#df3d52;--green:#159864}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.55 Arial,"Microsoft YaHei",sans-serif}a{color:var(--blue);text-decoration:none}.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#14275d,#376cf6)}.login-card{width:430px;background:#fff;border-radius:16px;padding:34px;box-shadow:0 24px 60px #09163d66}.login-card h1{margin:0 0 5px}.login-card .brand{color:var(--muted);margin-bottom:26px}.app{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,#172d69,#244fb7);color:#fff;padding:24px 16px}.sidebar h2{margin:0 10px 4px;font-size:19px}.sidebar small{display:block;color:#c8d6ff;margin:0 10px 24px}.nav a{display:block;color:#dce5ff;padding:10px 13px;border-radius:7px;margin:3px 0}.nav a:hover,.nav a.active{background:#ffffff20;color:#fff}.main{padding:24px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.topbar h1{font-size:23px;margin:0}.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;margin-bottom:16px;box-shadow:0 3px 14px #24406c0b}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.stat strong{display:block;font-size:26px;color:var(--navy)}label{display:block;color:#536078;margin-bottom:5px}input,select,textarea{width:100%;padding:9px 11px;border:1px solid #d5ddea;border-radius:6px;background:#fff;color:var(--text)}textarea{min-height:92px;resize:vertical}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px #376cf618}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.span-2{grid-column:span 2}.actions{display:flex;gap:8px;align-items:end;flex-wrap:wrap}.btn{display:inline-block;width:auto;border:0;border-radius:6px;background:var(--blue);color:#fff;padding:9px 15px;cursor:pointer}.btn.secondary{background:#eaf1ff;color:#2858c7}.btn.danger{background:var(--danger)}.btn.green{background:var(--green)}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:10px;border-bottom:1px solid #e8edf4;white-space:nowrap}th{background:#edf3ff;color:#2b4273}tr:hover td{background:#fafcff}.table-wrap{overflow:auto}.badge{padding:3px 8px;border-radius:12px;font-size:12px;background:#edf1f7}.badge.used{background:#e4f7ef;color:#117a51}.badge.disabled{background:#ffe8eb;color:#bb263b}.alert{padding:11px 14px;border-radius:7px;margin-bottom:14px;background:#e9f8f1;color:#126b49}.alert.error{background:#ffebee;color:#a32234}.pagination{display:flex;gap:5px;margin-top:14px}.pagination a,.pagination span{padding:6px 10px;border:1px solid #dce3ee;border-radius:5px;background:#fff}.pagination .current{background:var(--blue);color:#fff}.captcha-row{display:grid;grid-template-columns:1fr 145px;gap:10px;align-items:end}.captcha-row img{display:block;border-radius:8px}.inline{display:inline}.check-row{display:flex;gap:16px;flex-wrap:wrap}.check-row label{display:inline-flex;align-items:center;gap:5px}.check-row input{width:auto}@media(max-width:900px){.app{grid-template-columns:1fr}.sidebar{position:static}.grid,.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}}