:root{
  --bg:#f4f6fb; --card:#fff; --ink:#1d2330; --muted:#7a8194;
  --line:#e7eaf1; --primary:#4c6fff; --primary-d:#3a59e0;
  --green:#16b364; --red:#f5475d; --shadow:0 6px 24px rgba(20,30,60,.07);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,sans-serif;font-size:14px}
a{color:var(--primary);text-decoration:none}
button{font-family:inherit;cursor:pointer}
.hidden{display:none!important}

/* 顶栏 */
.topbar{background:var(--card);border-bottom:1px solid var(--line);padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700}
.brand .logo{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#4c6fff,#9a4cff);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.btn-ghost{border:1px solid var(--line);background:#fff;color:var(--muted);padding:8px 14px;border-radius:9px}

.wrap{max-width:1080px;margin:0 auto;padding:24px}

/* 统计卡 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow)}
.stat .n{font-size:28px;font-weight:800}
.stat .l{color:var(--muted);font-size:13px;margin-top:4px}

/* 通用卡片 */
.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow);margin-bottom:22px}
.panel h2{margin:0 0 16px;font-size:16px;display:flex;align-items:center;justify-content:space-between}

/* 表单 */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:13px}
.field .hint{color:var(--muted);font-weight:400;font-size:12px}
input[type=text],input[type=url],input[type=number],textarea,select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:#fbfcfe;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);background:#fff}
textarea{resize:vertical;min-height:64px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.seg{display:flex;gap:8px}
.seg label{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center;cursor:pointer;font-weight:600;background:#fbfcfe}
.seg input{display:none}
.seg input:checked + span{color:var(--primary)}
.seg label.on{border-color:var(--primary);background:#eef2ff;color:var(--primary)}
.check{display:flex;align-items:center;gap:8px;font-weight:500}
.check input{width:auto}
.btn-primary{background:var(--primary);color:#fff;border:0;padding:11px 22px;border-radius:10px;font-weight:600;font-size:15px}
.btn-primary:hover{background:var(--primary-d)}
.btn-primary:disabled{opacity:.5}

/* 表格 */
table{width:100%;border-collapse:collapse}
th,td{padding:12px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-size:12px;font-weight:600}
.slug-cell{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700}
.tag{display:inline-block;font-size:12px;padding:2px 9px;border-radius:20px;font-weight:600}
.tag.redirect{background:#eef2ff;color:#4c6fff}
.tag.card{background:#fff0f3;color:#f5475d}
.tag.wechat{background:#e6f9ef;color:#07c160}
.tag.off{background:#f1f2f5;color:#999}
.target{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}
.num-cell b{font-size:15px}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.mini{border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 9px;font-size:12px;color:var(--ink)}
.mini:hover{border-color:var(--primary);color:var(--primary)}
.mini.danger:hover{border-color:var(--red);color:var(--red)}
.empty{text-align:center;color:var(--muted);padding:40px}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(15,20,35,.5);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:#fff;border-radius:16px;padding:24px;max-width:440px;width:100%;max-height:86vh;overflow:auto}
.modal h3{margin:0 0 16px}
.modal .close{float:right;border:0;background:#f1f2f5;border-radius:8px;width:30px;height:30px;font-size:16px;color:#666}
.qr-img{display:block;margin:0 auto;width:240px;height:240px;border:1px solid var(--line);border-radius:12px}
.qr-url{text-align:center;color:var(--muted);font-size:12px;margin-top:12px;word-break:break-all}
.plat-bars{margin:8px 0 18px}
.plat-row{display:flex;align-items:center;gap:10px;margin:7px 0}
.plat-row .nm{flex:0 0 70px;font-size:13px}
.plat-row .bar{flex:1;height:10px;background:#eef0f5;border-radius:6px;overflow:hidden}
.plat-row .bar i{display:block;height:100%;background:var(--primary)}
.plat-row .v{flex:0 0 40px;text-align:right;font-size:13px;color:var(--muted)}
.ev{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding:6px 0}

/* 登录 */
.login-mask{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:200}
.login-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;width:340px;box-shadow:var(--shadow);text-align:center}
.login-box .logo{width:54px;height:54px;border-radius:14px;margin:0 auto 16px;background:linear-gradient(135deg,#4c6fff,#9a4cff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px}
.login-box h1{font-size:19px;margin:0 0 22px}
.login-box input{margin-bottom:14px;text-align:center}
.err{color:var(--red);font-size:13px;min-height:18px;margin-bottom:8px}

/* toast */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#1d2330;color:#fff;padding:11px 20px;border-radius:10px;font-size:14px;z-index:300;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}

@media(max-width:720px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .row{grid-template-columns:1fr}
  .target{max-width:120px}
  .hide-sm{display:none}
}