:root{--c:#0B4824;--c2:#13693a;--n:#f5f7f5;--v:#e2e8e4;--chu:#111c16;--chu2:#4a5a51;--do:#EE334C}
*{box-sizing:border-box}body{margin:0;font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--chu);background:var(--n);line-height:1.6}
a{color:var(--c2)}main{max-width:820px;margin:0 auto;padding:16px 16px 40px}
.dau{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;background:#fff;border-bottom:1px solid var(--v)}
.logo img{display:block;height:28px;width:auto}
h1{font-size:clamp(1.55rem,4.5vw,2.2rem);line-height:1.3;margin:12px 0 4px;color:var(--c)}
h2{font-size:1.25rem;line-height:1.35;margin:32px 0 8px;color:var(--c)}h3{font-size:1rem;margin:0 0 6px}
.tra-loi{background:#fff;border-left:4px solid var(--c);border-radius:8px;padding:12px 14px;margin:12px 0}
.ngay,.nhan,.duong-dan{color:var(--chu2);font-size:.88rem}.duong-dan{margin-top:8px}
.o4{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0 6px}
.o4 div,.hai>div,.the a{background:#fff;border:1px solid var(--v);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:2px;min-width:0}
.o4 span,.the span{color:var(--chu2);font-size:.85rem}.o4 b{font-size:1.05rem;overflow-wrap:anywhere}
.nut{display:inline-block;background:var(--c);color:#fff;text-decoration:none;font-weight:600;border-radius:10px}
.nut.lon{padding:12px 18px;margin:12px 0}.nut.nho{padding:7px 12px;font-size:.88rem}.nut:hover{background:var(--c2)}
.cuon{overflow-x:auto}table{border-collapse:collapse;width:100%;background:#fff;font-size:.93rem}
th,td{border:1px solid var(--v);padding:8px 10px;text-align:right}th{background:#e9f2ec;color:var(--c)}td:first-child,th:first-child{text-align:left}
.hai{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.hai ol{margin:0;padding-left:20px}
details{background:#fff;border:1px solid var(--v);border-radius:10px;padding:10px 14px;margin:8px 0}summary{cursor:pointer;font-weight:600}
.keu{background:#e9f2ec;border-radius:14px;padding:4px 18px 12px;margin-top:32px}
.nguon,.khac{padding-left:20px}.mien-tru{background:#fff5f6;border-left:3px solid var(--do);padding:10px 14px;border-radius:6px;font-size:.92rem}
.the{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.the a{text-decoration:none;color:var(--chu)}
.chan{max-width:820px;margin:0 auto;padding:16px;color:var(--chu2);font-size:.85rem;border-top:1px solid var(--v)}
@media (max-width:560px){.o4,.hai,.the{grid-template-columns:minmax(0,1fr)}.dau .nut.nho{display:none}}