/* Cong cu tinh han dang kiem + trang ngach theo loai xe (03/11/2026). Tu chua, khong phu thuoc bootstrap cua tool cu. */
:root{--dk-blue:#0b5cad;--dk-blue2:#1570cf;--dk-ink:#1d2433;--dk-mute:#5d6576;--dk-line:#dfe4ec;--dk-bg:#f4f7fb;--dk-card:#fff;--dk-ok:#0f8a5f;--dk-warn:#c77700;--dk-bad:#c62828;--dk-zalo:#0068ff}
*{box-sizing:border-box}
body{margin:0;background:var(--dk-bg);color:var(--dk-ink);font:16px/1.55 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--dk-blue)}
.dk-wrap{max-width:980px;margin:0 auto;padding:0 16px}
.dk-top{background:#fff;border-bottom:1px solid var(--dk-line)}
.dk-top-in{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;flex-wrap:wrap}
.dk-logo img{display:block}
.dk-nav{display:flex;gap:4px;flex-wrap:wrap}
.dk-nav a{color:var(--dk-ink);text-decoration:none;padding:6px 10px;border-radius:8px;font-size:15px}
.dk-nav a:hover{background:#e8f1fc;color:var(--dk-blue)}
.dk-crumb{font-size:14px;color:var(--dk-mute);margin:14px 0 6px}
.dk-crumb a{color:var(--dk-mute)}
h1{font-size:30px;line-height:1.25;margin:8px 0 6px;color:var(--dk-blue)}
.dk-sub{margin:0 0 12px;color:var(--dk-mute)}
.dk-answer{background:#fff;border:1px solid var(--dk-line);border-left:5px solid var(--dk-blue);border-radius:12px;padding:12px 14px;margin:10px 0 16px}
.dk-card{background:var(--dk-card);border:1px solid var(--dk-line);border-radius:14px;padding:16px;margin:16px 0}
.dk-card h2{font-size:21px;margin:0 0 12px}
.dk-card h3{font-size:17px;margin:16px 0 6px}
.dk-note{font-size:13px;color:var(--dk-mute);margin:10px 0 0}
.dk-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--dk-blue);color:#fff;border:0;border-radius:999px;padding:10px 20px;font-weight:600;font-size:16px;text-decoration:none;cursor:pointer;min-height:44px}
.dk-btn:hover{background:#094a8c;color:#fff}
.dk-btn.ghost{background:#fff;color:var(--dk-blue);border:1px solid var(--dk-blue)}
.dk-btn.zalo{background:var(--dk-zalo)}
.dk-btn.zalo:hover{background:#0052cc}
.dk-btn[disabled]{opacity:.6;cursor:default}
/* form */
.dk-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 16px}
.dk-f{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--dk-mute)}
.dk-form .full{grid-column:1/-1}
.dk-f select,.dk-f input[type=number],.dk-f input[type=date],.dk-f input[type=text]{width:100%;padding:10px;border:1px solid #c7cfdb;border-radius:10px;font-size:16px;background:#fff;color:var(--dk-ink);min-height:44px}
.dk-chk{display:flex;align-items:flex-start;gap:8px;font-size:15px;color:var(--dk-ink);cursor:pointer}
.dk-chk input{width:20px;height:20px;margin:2px 0 0;flex:0 0 auto}
.dk-seg{display:flex;flex-wrap:wrap;gap:6px}
.dk-seg button{border:1px solid var(--dk-line);background:#fff;border-radius:999px;padding:8px 14px;font-size:15px;cursor:pointer;color:var(--dk-ink);min-height:40px}
.dk-seg button.on{background:var(--dk-blue);border-color:var(--dk-blue);color:#fff}
.dk-hint{font-size:13px;color:var(--dk-mute)}
.dk-actions{grid-column:1/-1;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
/* ket qua */
.dk-out{margin-top:16px}
.dk-res{border-radius:14px;padding:16px;background:#eef5fd;border:1px solid #cfe0f5}
.dk-res.warn{background:#fff6e5;border-color:#f3d59b}
.dk-res.bad{background:#fdecea;border-color:#f3b8b3}
.dk-res .k{font-size:14px;color:var(--dk-mute);margin:0}
.dk-res .big{font-size:28px;font-weight:800;margin:2px 0;color:var(--dk-blue)}
.dk-res.warn .big{color:var(--dk-warn)}
.dk-res.bad .big{color:var(--dk-bad)}
.dk-res .left{font-weight:700}
.dk-res dl{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:12px 0 0;font-size:15px}
.dk-res dt{color:var(--dk-mute)}
.dk-res dd{margin:0}
.dk-res ul{margin:6px 0 0;padding-left:20px}
.dk-err{color:var(--dk-bad);font-weight:600}
/* nhac Zalo */
.dk-remind{margin-top:14px;border:2px dashed #9cc2f5;border-radius:14px;padding:14px;background:#fff}
.dk-remind h3{margin:0 0 6px;font-size:18px}
.dk-remind .row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.dk-remind .row .dk-f{flex:1 1 180px}
.dk-code{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:10px 0}
.dk-code b{font-size:26px;letter-spacing:2px;background:#e8f1fc;border-radius:10px;padding:6px 12px;font-variant-numeric:tabular-nums}
.dk-steps{margin:8px 0;padding-left:20px}
.dk-steps li{margin:4px 0}
.dk-on{color:var(--dk-ok);font-weight:700}
/* bang */
.dk-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.dk-tbl{width:100%;border-collapse:collapse;font-size:15px}
.dk-tbl th,.dk-tbl td{border-bottom:1px solid var(--dk-line);padding:8px 6px;text-align:left;vertical-align:top}
.dk-tbl thead th{background:#eaf1fa;font-size:14px}
.dk-tbl tr.on td{background:#eaf8f2}
.dk-tbl td.n{white-space:nowrap;font-weight:600}
/* link ngach */
.dk-types{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:0;padding:0;list-style:none}
.dk-types a{display:block;border:1px solid var(--dk-line);border-radius:12px;padding:10px 12px;text-decoration:none;color:var(--dk-ink);background:#fff;height:100%}
.dk-types a:hover{border-color:var(--dk-blue)}
.dk-types b{display:block;color:var(--dk-blue);font-size:15px}
.dk-types span{font-size:13px;color:var(--dk-mute)}
.dk-types a.cur{border-color:var(--dk-blue);background:#eef5fd}
.dk-faq details{border-bottom:1px solid var(--dk-line);padding:10px 0}
.dk-faq summary{cursor:pointer;font-weight:600}
.dk-faq p{margin:8px 0 0}
.dk-src{font-size:14px}
.dk-src li{margin:4px 0}
.dk-ad{margin:16px 0;min-height:100px}
/* the Dora */
.dk-xl{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid var(--dk-line);border-radius:14px;padding:14px;margin:16px 0}
.dk-xl div{flex:1 1 260px}
.dk-xl p{margin:4px 0;font-size:14px;color:var(--dk-mute)}
.dk-foot{margin-top:30px;padding:20px 0;border-top:1px solid var(--dk-line);font-size:13px;color:var(--dk-mute)}
@media (max-width:640px){
  h1{font-size:24px}
  .dk-form{grid-template-columns:1fr}
  .dk-res .big{font-size:24px}
  .dk-tbl{font-size:14px}
}