:root{--brand:#0b5cff;--brand2:#00c2ff;--bg:#f5f7fb;--card:#fff;--text:#0f172a;--muted:#64748b;}
html,body{height:100%;}
body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans Thai",sans-serif;}
.sidebar{width:280px;background:#fff;border-right:1px solid rgba(15,23,42,.08);position:fixed;top:0;bottom:0;left:0;padding:18px 14px;overflow-y:auto;}
.brand{display:flex;align-items:center;gap:10px;padding:10px 10px 16px;border-bottom:1px solid rgba(15,23,42,.08);}
.brand .logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#fff;font-weight:800;}
.brand .title{line-height:1.1;}
.brand .title small{color:var(--muted);}
.content{margin-left:280px;padding:22px 24px 60px;}
.topbar{background:linear-gradient(135deg,#0b4fd1,#0ea5e9);color:#fff;border-radius:18px;padding:20px 22px;box-shadow:0 12px 28px rgba(2,6,23,.18);display:flex;align-items:center;justify-content:space-between;gap:14px;}
.cardx{background:var(--card);border:1px solid rgba(15,23,42,.06);border-radius:18px;box-shadow:0 6px 22px rgba(2,6,23,.06);}
.cardx .cardx-h{padding:16px 18px;border-bottom:1px solid rgba(15,23,42,.06);}
.cardx .cardx-b{padding:18px;}
.navlink{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;color:#0f172a;text-decoration:none;}
.navlink:hover{background:rgba(2,132,199,.08);}
.navlink.active{background:rgba(2,132,199,.12);font-weight:900;}
.navsection{margin-top:16px;}
.navsection small{color:var(--muted);font-weight:900;display:block;margin:14px 10px 8px;}
.otp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.otp-box{background:#fff;border-radius:18px;border:1px solid rgba(15,23,42,.08);box-shadow:0 10px 26px rgba(2,6,23,.06);height:88px;display:grid;place-items:center;font-size:42px;font-weight:900;letter-spacing:6px;}
.otp-box.mask{color:#cbd5e1;}
.kpi{display:flex;align-items:center;gap:12px;}
.kpi .ic{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:rgba(2,132,199,.12);color:#0369a1;}
.table thead th{color:#334155;font-weight:900;}