/* 梅子素材网 后台样式（深色侧栏风格） */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;background:#f0f2f7;color:#333}
a{text-decoration:none;color:inherit}
.layout{display:flex;min-height:100vh}
.sidebar{width:216px;background:linear-gradient(180deg,#2b2d5a,#23244a);color:#c6c8e8;flex-shrink:0;position:sticky;top:0;height:100vh;overflow:auto}
.sidebar .brand{padding:22px 20px;font-size:19px;font-weight:800;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar a{display:block;padding:13px 22px;font-size:14px;color:#c6c8e8}
.sidebar a:hover,.sidebar a.on{background:rgba(255,255,255,.09);color:#fff;border-left:3px solid #7b7bff}
.main{flex:1;min-width:0}
.topline{background:#fff;padding:14px 28px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 1px 6px rgba(0,0,0,.06);font-size:14px}
.content{padding:26px 28px}
.panel{background:#fff;border-radius:16px;padding:24px;box-shadow:0 2px 14px rgba(26,27,46,.06);border:1px solid #f0f0f7;margin-bottom:22px}
.panel h3{margin-bottom:16px;font-size:17px;border-left:4px solid #7c3aed;padding-left:10px;letter-spacing:.5px}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th,.tbl td{padding:11px 12px;border-bottom:1px solid #f2f2f9;text-align:left;vertical-align:middle}
.tbl th{background:#f8f7fe;color:#7a7a90;font-weight:700}
.tbl tr:hover td{background:#fafaff}
.tbl img.cover{width:72px;height:48px;object-fit:cover;border-radius:6px}
.btn{display:inline-block;padding:7px 18px;border-radius:8px;background:linear-gradient(135deg,#7c3aed,#4f46e5);color:#fff;font-size:13px;border:none;cursor:pointer;box-shadow:0 4px 12px rgba(124,58,237,.25);transition:transform .15s}
.btn:hover{transform:translateY(-1px)}
.btn-sm{padding:4px 12px;font-size:12px}
.btn-green{background:linear-gradient(135deg,#10b981,#0d9488)}.btn-red{background:linear-gradient(135deg,#f56c6c,#e33)}.btn-gray{background:#909399}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13.5px;margin-bottom:6px;color:#555;font-weight:600}
.form-row input,.form-row select,.form-row textarea{width:100%;max-width:560px;padding:10px 13px;border:1.5px solid #dcdce8;border-radius:9px;font-size:13.5px;outline:none;font-family:inherit;background:#fbfbfe}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.1);background:#fff}
.form-row .tip{font-size:12px;color:#999;margin-top:4px;font-weight:400}
.radio-group{display:flex;gap:22px;align-items:center;font-size:13.5px;font-weight:400}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.stat{background:#fff;border-radius:14px;padding:22px;box-shadow:0 2px 14px rgba(26,27,46,.06);border:1px solid #f0f0f7;position:relative;overflow:hidden}
.stat::after{content:"";position:absolute;right:-24px;top:-24px;width:88px;height:88px;border-radius:50%;background:rgba(124,58,237,.07)}
.stat .num{font-size:30px;font-weight:800;margin-top:8px;background:linear-gradient(135deg,#7c3aed,#4f46e5);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.flash{padding:11px 18px;border-radius:10px;margin-bottom:16px;font-size:13.5px;background:#e7f9f0;color:#0a9d5c;border:1px solid #b7ecd4}
.flash.err{background:#ffecec;color:#e33;border:1px solid #ffc9c9}
.tabs{display:flex;gap:8px;margin-bottom:20px}
.tabs a{padding:9px 22px;border-radius:999px;background:#fff;font-size:13.5px;color:#555;box-shadow:0 1px 4px rgba(0,0,0,.06);font-weight:600;transition:all .2s}
.tabs a.on{background:linear-gradient(135deg,#7c3aed,#4f46e5);color:#fff;box-shadow:0 4px 12px rgba(124,58,237,.3)}
.cover-preview{margin-top:8px;max-width:200px;border-radius:8px;display:block}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2b2d5a,#5b4bff)}
.login-box{background:#fff;border-radius:14px;padding:40px;width:380px;box-shadow:0 20px 60px rgba(0,0,0,.3)}