/* Tính điểm xét học bạ — tông sáng Intracom, kế thừa font website */
.ixhb{--ink:#1C0045;--mut:#6b5e86;--line:#e8e1f2;--surface:#f7f5fb;--accent:#1C0045;--accent2:#E7C638;
  --ok:#1a8a5a;--bad:#c0392b;--badbg:#fdecea;box-sizing:border-box;width:100%;max-width:860px;margin:0 auto;font-family:inherit;color:var(--ink);}
.ixhb *,.ixhb *::before,.ixhb *::after{box-sizing:border-box;}
.ixhb__inner{position:relative;overflow:hidden;padding:clamp(16px,3.5vw,30px);border-radius:20px;
  background:radial-gradient(120% 90% at 100% -12%,color-mix(in srgb,var(--accent2) 13%,transparent),transparent 55%),#fff;
  border:1px solid var(--line);box-shadow:0 20px 50px -34px rgba(28,0,69,.35);margin-bottom: 20px;}
.ixhb__inner::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent2));}
.ixhb__eyebrow{margin:0;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700;}
.ixhb__title{font-weight:800;font-size:clamp(19px,3.2vw,26px);margin:3px 0 0;line-height:1.15;}
.ixhb__intro{margin:8px 0 18px;font-size:14px;color:var(--mut);line-height:1.5;}
.ixhb__lbl{display:block;font-weight:700;font-size:14px;margin:16px 0 7px;}
.ixhb__select{font-family:inherit;font-size:15px;color:var(--ink);width:100%;padding:11px 12px;min-height:46px;
  border:1px solid var(--line);border-radius:10px;background:var(--surface);}
.ixhb__select:focus{outline:2px solid var(--accent);outline-offset:1px;background:#fff;}
.ixhb__row2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

.ixhb__gridwrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;}
.ixhb__grid{border-collapse:collapse;width:100%;min-width:420px;}
.ixhb__grid th,.ixhb__grid td{border:1px solid var(--line);padding:6px;text-align:center;}
.ixhb__grid thead th{background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:9px 6px;}
.ixhb__grid tbody th{background:var(--surface);font-size:13px;font-weight:600;text-align:left;padding-left:12px;white-space:nowrap;position:sticky;left:0;}
.ixhb__grid input{font-family:inherit;font-size:15px;color:var(--ink);width:100%;min-width:56px;padding:8px 6px;min-height:42px;
  border:1px solid var(--line);border-radius:8px;background:#fff;text-align:center;}
.ixhb__grid input:focus{outline:2px solid var(--accent);outline-offset:1px;}
.ixhb__grid input.err{border-color:var(--bad);background:var(--badbg);}
.ixhb__hint{margin:9px 2px 0;font-size:12px;color:var(--mut);line-height:1.5;}
.ixhb__hint b{color:var(--ink);}
.ixhb__sub{margin:8px 2px 0;font-size:12px;color:var(--mut);line-height:1.45;}

.ixhb__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.ixhb__btn{flex:1 1 auto;cursor:pointer;font-family:inherit;font-weight:700;font-size:16px;color:#fff;padding:14px 20px;border:0;border-radius:12px;
  background:var(--accent);box-shadow:0 12px 26px -14px color-mix(in srgb,var(--accent) 80%,transparent);transition:filter .15s,transform .15s;margin: 0;}
.ixhb__btn:hover{filter:brightness(1.15);transform:translateY(-1px);}
.ixhb__reset{cursor:pointer;font-family:inherit;font-weight:600;font-size:14px;color:var(--ink);padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;margin: 0;}
.ixhb__reset:hover{border-color:var(--accent);background:var(--surface);}
.ixhb__btn:focus-visible,.ixhb__reset:focus-visible,.ixhb__cta:focus-visible,.ixhb__select:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.ixhb__err{min-height:1.1em;margin:10px 0 0;font-size:13px;color:var(--bad);font-weight:600;}

.ixhb__result{margin:18px 0 0;}
.ixhb__band{background:var(--accent);color:#fff;font-weight:700;font-size:14px;letter-spacing:.04em;text-align:center;padding:10px;border-radius:10px;margin:14px 0 12px;}
.ixhb__combos{display:grid;grid-template-columns:1fr;gap:8px;}
@media(min-width:560px){.ixhb__combos{grid-template-columns:1fr 1fr;}}
.ixhb__combo{display:grid;grid-template-columns:auto 1fr auto 1fr;align-items:center;gap:2px;border:1px solid var(--line);border-radius:8px;overflow:hidden;font-size:13px;}
.ixhb__combo>span{padding:9px 8px;}
.ixhb__combo .k{background:var(--surface);font-weight:700;color:var(--ink);white-space:nowrap;}
.ixhb__combo .v{text-align:right;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;}
.ixhb__combo .uk{background:var(--surface);color:var(--mut);font-size:11px;white-space:nowrap;}
.ixhb__combo .uv{text-align:right;color:var(--mut);font-variant-numeric:tabular-nums;}
.ixhb__means{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
.ixhb__mean{display:flex;justify-content:space-between;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:9px 12px;background:var(--surface);font-size:13px;}
.ixhb__mean b{color:var(--accent);font-variant-numeric:tabular-nums;}

.ixhb__cta{display:block;text-align:center;text-decoration:none;margin:16px 0 0;font-weight:700;font-size:17px;color:#0c1030;
  padding:13px 20px;border-radius:12px;background:linear-gradient(90deg,var(--accent2),color-mix(in srgb,var(--accent2) 60%,#fff));}
.ixhb__formula{margin:18px 0 0;border-top:1px solid var(--line);padding-top:14px;}
.ixhb__formula summary{cursor:pointer;font-weight:700;}
.ixhb__formula p{font-size:13px;line-height:1.55;color:var(--mut);margin:10px 0 0;}
.ixhb__eq{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 12px;color:var(--ink)!important;}
.ixhb__foot{margin:18px 0 0;}
.ixhb__logo{height:70px;width:auto;display:block;margin: auto;}
@media(max-width:480px){.ixhb__row2,.ixhb__means{grid-template-columns:1fr;}}