:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1f2a37;
  --muted:#6b7280;
  --ok:#e9f8ef;
  --bad:#ffe9ea;
  --border:#e5e7eb;
  --primary:#2563eb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--primary);text-decoration:none}
.container{max-width:820px;margin:0 auto;padding:14px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.brand{font-weight:700}

/* WX sticky header (3 lines) */
.wx-header{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.92);backdrop-filter:saturate(1.2) blur(8px);padding:10px 0 8px;margin:-14px -14px 12px}
.wx-header-inner{padding:0 14px}
.wx-title{font-weight:800;text-align:center;font-size:17px;line-height:1.2;margin:0}
.wx-nav{display:flex;gap:6px;justify-content:center;align-items:center;flex-wrap:nowrap;margin-top:10px}
.wx-nav a{flex:1;min-width:0;text-align:center;white-space:nowrap}
.wx-nav .navbtn{padding:9px 10px;font-size:13px;border-radius:10px}
.wx-userline{margin-top:10px;color:var(--muted);font-size:12px;text-align:center}
.wx-userline b{color:var(--text)}

/* Toast tip */
.toast{position:fixed;left:50%;top:16px;transform:translateX(-50%);z-index:1000;min-width:220px;max-width:90vw;border-radius:14px;padding:10px 12px;border:1px solid var(--border);background:#fff;box-shadow:0 10px 30px rgba(17,24,39,.12);display:none}
.toast.ok{background:var(--ok);border-color:#b7ebc5;color:#14532d}
.toast.bad{background:var(--bad);border-color:#ffc0c2;color:#7f1d1d}
.toast.show{display:block}
.pill{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--muted);font-size:12px}
.pill.ok{background:var(--ok);color:#14532d;border-color:#b7ebc5}
.pill.bad{background:var(--bad);color:#7f1d1d;border-color:#ffc0c2}
.grid{display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:10px}
@media (min-width:520px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px}
.card.ok{background:var(--ok);border-color:#b7ebc5}
.card.bad{background:var(--bad);border-color:#ffc0c2}
.card h3{margin:0 0 6px 0;font-size:16px}
.muted{color:var(--muted);font-size:13px}
.row{display:flex;justify-content:space-between;align-items:center;gap:10px}
.btn{appearance:none;border:0;border-radius:12px;padding:10px 12px;background:var(--primary);color:#fff;font-weight:600;cursor:pointer}
.btn.secondary{background:#111827}
.btn.light{background:#fff;color:var(--text);border:1px solid var(--border)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.alert{border:1px solid var(--border);background:#fff;border-radius:12px;padding:10px 12px;margin-bottom:10px}
.alert.ok{border-color:#b7ebc5;background:var(--ok);color:#14532d}
.alert.bad{border-color:#ffc0c2;background:var(--bad);color:#7f1d1d}
form{margin:0}
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px}
input{width:100%;padding:11px 12px;border-radius:12px;border:1px solid var(--border);outline:none;background:#fff}
input:focus{border-color:#93c5fd;box-shadow:0 0 0 3px rgba(147,197,253,.35)}
.error{margin-top:6px;color:#b91c1c;font-size:12px}
.table{width:100%;border-collapse:separate;border-spacing:0 8px}
.table th{font-size:12px;color:var(--muted);text-align:left;font-weight:600;padding:0 8px}
.table td{background:#fff;border:1px solid var(--border);padding:10px 8px}
.table tr td:first-child{border-top-left-radius:12px;border-bottom-left-radius:12px}
.table tr td:last-child{border-top-right-radius:12px;border-bottom-right-radius:12px}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.small{font-size:12px}