*{box-sizing:border-box}body{margin:0;font-family:Arial,"Noto Sans Thai",sans-serif;background:#f4f7fb;color:#15304f}a{color:#0757a6;text-decoration:none}header{height:70px;background:#fff;border-bottom:1px solid #dde5ee;display:flex;align-items:center;justify-content:space-between;padding:0 28px}.brand{font-size:28px;font-weight:900;color:#06477f;letter-spacing:1px}.brand small{display:block;font-size:10px;letter-spacing:4px}.layout{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - 70px)}aside{background:#073b67;padding:28px 16px;color:#fff}aside b{display:block;font-size:20px;margin:0 10px 22px}aside a{display:block;color:#dbeaff;padding:12px;border-radius:9px;margin:4px 0}aside a:hover,aside a.active{background:#0b65a9;color:#fff}main{padding:30px}.page{max-width:1400px;margin:auto}.muted{color:#718399}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:25px 0}.card,section{background:#fff;border:1px solid #e0e7ef;border-radius:14px;padding:20px;box-shadow:0 3px 12px #1231}.card span{display:block;color:#718399}.card strong{font-size:34px;display:block;margin-top:8px;color:#0757a6}.section-head{display:flex;justify-content:space-between;align-items:center}.btn,button{background:#078a55;color:#fff;border:0;border-radius:8px;padding:11px 17px;font-weight:700;cursor:pointer}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:13px;border-bottom:1px solid #e9eef4}th{color:#5d7189;font-size:13px}.badge{background:#fff0c2;color:#8a5a00;padding:5px 9px;border-radius:999px}.warn{color:#c0392b;font-weight:bold}.grid-form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}input,select,textarea{width:100%;padding:12px;border:1px solid #ccd8e5;border-radius:8px;background:#fff}textarea{min-height:90px}.success{padding:13px;background:#dff6e9;border-radius:8px;margin-bottom:15px}.alert{background:#ffe3e3;padding:10px;border-radius:8px}.login-bg{display:grid;place-items:center;min-height:100vh;background:linear-gradient(135deg,#e8f5ff,#e9fff2)}.login-card{width:min(420px,92vw);margin:8vh auto;background:#fff;padding:32px;border-radius:18px;box-shadow:0 20px 50px #1233}.login-card form{display:grid;gap:12px}.login-card h1{margin-bottom:5px}@media(max-width:850px){.layout{grid-template-columns:1fr}aside{display:none}.cards{grid-template-columns:repeat(2,1fr)}.grid-form{grid-template-columns:1fr}main{padding:18px}}