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(prefers-reduced-motion:reduce){*,:after,:before{animation:none!important;transition:none!important}}h1,h2,h3,h4{font-family:var(--disp);text-wrap:balance;margin:0}h1{font-weight:700;font-size:clamp(2.1rem,6vw,3.5rem);line-height:1.02;letter-spacing:-.035em;max-width:19ch}h2{font-size:clamp(1.4rem,3.2vw,2rem);line-height:1.14;letter-spacing:-.025em}h2,h3{font-weight:600}h3{font-size:1.05rem;letter-spacing:-.01em}p{margin:0;max-width:64ch;text-wrap:pretty}a{color:var(--troi);text-underline-offset:.18em;text-decoration-thickness:1px}strong{font-weight:600}.mono,code{font-size:.9em}.mono,.nhan,code{font-family:var(--mono)}.nhan{font-size:.68rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--mo)}.khung{max-width:var(--khung);margin:0 auto;padding:0 var(--le)}.song{border-left:1px solid var(--vien);padding-left:clamp(1rem,4vw,2.75rem)}section{padding:clamp(3rem,7vw,5.5rem) 0}section+section{border-top:1px solid var(--vien)}.nut{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--sans);font-size:.95rem;font-weight:600;line-height:1;padding:.85rem 1.4rem;border-radius:3px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .15s ease,border-color .15s ease}.nut-chinh{background:var(--troi);color:var(--nen)}.nut-chinh:hover{background:var(--muc)}.nut-phu{background:transparent;color:var(--muc);border-color:var(--vien-dam)}.nut-phu:hover{border-color:var(--muc);background:var(--chim)}.nut:disabled{opacity:.5;cursor:not-allowed}.can-dien{display:inline-block;font-family:var(--mono);font-size:.78rem;color:var(--luu);background:var(--luu-nen);border:1px dashed var(--luu);border-radius:2px;padding:.1rem .45rem}.bo-qua{position:absolute;left:-9999px;top:0;background:var(--giay);color:var(--muc);padding:.75rem 1.25rem;border:1px solid var(--vien-dam);border-radius:3px;z-index:100}.bo-qua:focus{left:1rem;top:1rem}