@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/lexend-vietnamese-wght-normal.RvljkFvg.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/lexend-latin-ext-wght-normal.B6JQhE1e.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/lexend-latin-wght-normal.ci0D1wrL.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Plus Jakarta Sans Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(data:font/woff2;base64,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)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Plus Jakarta Sans Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/plus-jakarta-sans-vietnamese-wght-normal.qRpaaN48.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Plus Jakarta Sans Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/plus-jakarta-sans-latin-ext-wght-normal.DmpS2jIq.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Plus Jakarta Sans Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/plus-jakarta-sans-latin-wght-normal.eXO_dkmS.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--ink:#1b1b3a;--ink-2:#47476b;--sun:#ffd23f;--sun-soft:#fff1bf;--paper:#fffaf0;--card:#fff;--line:#e6dfca;--sky:#a9d6f5;--pink:#f7b2bd;--mint:#bfe5b0;--good:#17653f;--good-bg:#e3f5e9;--bad:#b3261e;--bad-bg:#fde8e6;--head:"Lexend Variable", "Lexend", system-ui, sans-serif;--body:"Plus Jakarta Sans Variable", "Plus Jakarta Sans", system-ui, sans-serif;--r:14px;--lift:4px 4px 0 var(--ink)}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:6.5rem}body{background:var(--paper);color:var(--ink);font-family:var(--body);margin:0;font-size:1.0625rem;line-height:1.6}img,svg{max-width:100%}h1,h2,h3{font-family:var(--head);letter-spacing:-.01em;margin:0 0 .6rem;line-height:1.2}h1{font-size:clamp(1.9rem,6.2vw,3.1rem);font-weight:800}h2{margin-top:.2rem;font-size:clamp(1.4rem,4.4vw,1.9rem);font-weight:700}h3{font-size:1.15rem;font-weight:700}p{margin:0 0 .9rem}a{color:var(--ink);text-underline-offset:3px;text-decoration-color:#d9a900;text-decoration-thickness:2px}a:hover{background:var(--sun-soft)}:focus-visible{outline:3px solid var(--ink);outline-offset:3px;box-shadow:0 0 0 7px var(--sun);border-radius:4px}.sr{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.skip{background:var(--sun);color:var(--ink);z-index:10;padding:.6rem 1rem;font-weight:700;position:absolute;top:-4rem;left:.5rem}.skip:focus{top:.5rem}.wrap{width:min(100% - 2rem,62rem);margin-inline:auto}.narrow{width:min(100% - 2rem,46rem);margin-inline:auto}.top{background:var(--ink);color:#fff}.top-in{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.4rem 1rem;padding:.7rem 0;display:flex}.brand{color:#fff;font-family:var(--head);align-items:center;gap:.55rem;min-height:44px;font-size:1.15rem;font-weight:700;text-decoration:none;display:inline-flex}.brand:hover{background:0 0}.brand .tld{color:var(--sun)}.nav{flex-wrap:wrap;gap:.25rem;display:flex}.nav a{color:#fff;border-radius:999px;align-items:center;min-height:44px;padding:.55rem .75rem;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.nav a:hover{background:#ffffff1f}.nav a[aria-current=page]{background:var(--sun);color:var(--ink)}.top :focus-visible{outline-color:var(--sun);box-shadow:none}.hero{padding:2.2rem 0 1.4rem}.trail ol{color:var(--ink-2);flex-wrap:wrap;align-items:center;margin:0 0 .8rem;padding:0;font-size:.9rem;list-style:none;display:flex}.trail li+li:before{content:"›";color:var(--ink-2);margin:0 .45rem;font-weight:700}.trail a{align-items:center;min-height:44px;font-weight:600;display:inline-flex}.trail [aria-current]{color:var(--ink);font-weight:600}.hl{background:linear-gradient(transparent 58%, var(--sun) 58%, var(--sun) 92%, transparent 92%);padding:0 .1em}.lede{max-width:40rem;font-size:1.15rem}.meta{color:var(--ink-2);flex-wrap:wrap;align-items:center;gap:.4rem .6rem;margin:.2rem 0 1.1rem;font-size:.92rem;display:flex}.meta .chip{background:var(--card);border:1.5px solid var(--ink);color:var(--ink);border-radius:999px;padding:.15rem .7rem;font-weight:600}.status{background:var(--card);border:2px solid var(--ink);border-left:10px solid var(--sun);border-radius:var(--r);max-width:46rem;padding:.85rem 1rem;font-size:.97rem}.status p:last-child{margin-bottom:0}.years{z-index:5;background:var(--paper);border-bottom:2px solid var(--line);padding:.6rem 0;position:sticky;top:0}.years-in{grid-template-columns:repeat(6,1fr);gap:.45rem;display:grid}.years a{background:var(--card);border:2px solid var(--ink);min-height:58px;font-family:var(--head);border-radius:12px;flex-direction:column;justify-content:center;align-items:center;line-height:1.05;text-decoration:none;display:flex}.years a:hover{background:var(--sun-soft)}.years small{text-transform:uppercase;letter-spacing:.06em;font-size:.7rem;font-weight:500}.years b{font-size:1.45rem;font-weight:800}.years a[aria-current=true]{background:var(--sun);box-shadow:3px 3px 0 var(--ink);transform:translate(-1px,-1px)}.band{padding:2rem 0}.band+.band{border-top:2px dashed var(--line)}.panel{padding:1.6rem 0 .6rem}.panel-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.2rem 1rem;margin-bottom:.4rem;display:flex}.panel-head p{color:var(--ink-2);margin:0;font-size:.95rem}.topics-line{color:var(--ink-2);margin-bottom:1.2rem;font-size:.93rem}.qs{counter-reset:q;gap:1.6rem;margin:0;padding:0;list-style:none;display:grid}.q{background:var(--card);border:2px solid var(--ink);border-radius:var(--r);box-shadow:var(--lift);padding:1.6rem 1rem 1rem;position:relative}.q-no{background:var(--sun);border:2px solid var(--ink);min-width:2.3rem;height:2.3rem;font-family:var(--head);border-radius:999px;place-items:center;padding:0 .4rem;font-size:1.05rem;font-weight:800;display:grid;position:absolute;top:-1.05rem;left:.9rem}.q-topic{background:var(--paper);border:1.5px solid var(--ink);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;text-overflow:ellipsis;border-radius:6px;max-width:62%;padding:.05rem .5rem;font-size:.72rem;font-weight:700;position:absolute;top:-.75rem;right:.8rem;overflow:hidden}@media (width<=639px){.q-topic{white-space:normal;max-width:100%;margin:.15rem 0 .4rem;line-height:1.35;display:inline-block;position:static}}.q-stem{margin:.2rem 0 .8rem;font-size:1.08rem;font-weight:600}.q fieldset{border:0;gap:.5rem;margin:0;padding:0;display:grid}@media (width>=640px){.q fieldset{grid-template-columns:1fr 1fr}}.opt{border:2px solid var(--line);background:var(--paper);cursor:pointer;border-radius:12px;align-items:center;gap:.7rem;min-height:50px;padding:.45rem .7rem .45rem .5rem;font-weight:500;display:flex;position:relative}.opt:hover{border-color:var(--ink)}.opt input{opacity:0;width:1px;height:1px;position:absolute}.opt .k{border:2px solid var(--ink);background:var(--card);width:2rem;height:2rem;font-family:var(--head);border-radius:8px;flex:none;place-items:center;font-weight:700;display:grid}.opt:has(input:checked){border-color:var(--ink);background:var(--sun-soft)}.opt:has(input:checked) .k{background:var(--ink);color:var(--sun)}.opt:has(input:focus-visible){outline:3px solid var(--ink);outline-offset:2px;box-shadow:0 0 0 6px var(--sun)}.opt .tag{white-space:nowrap;border-radius:6px;margin-left:auto;padding:.05rem .45rem;font-size:.78rem;font-weight:700}.opt.is-correct,.opt.is-correct:has(input:checked){border-color:var(--good);background:var(--good-bg)}.opt.is-correct .k,.opt.is-correct:has(input:checked) .k{background:var(--good);border-color:var(--good);color:#fff}.opt.is-correct .tag{background:var(--good);color:#fff}.opt.is-wrong,.opt.is-wrong:has(input:checked){border-color:var(--bad);background:var(--bad-bg)}.opt.is-wrong .k,.opt.is-wrong:has(input:checked) .k{background:var(--bad);border-color:var(--bad);color:#fff}.opt.is-wrong .tag{background:var(--bad);color:#fff}.q.marked .opt{cursor:default}.q.q-right{box-shadow:4px 4px 0 var(--good)}.q.q-wrong,.q.q-skip{box-shadow:4px 4px 0 var(--bad)}.why{border-top:2px dotted var(--line);margin-top:.8rem;padding-top:.5rem}.why summary{cursor:pointer;align-items:center;gap:.4rem;min-height:44px;font-size:.95rem;font-weight:700;list-style:none;display:flex}.why summary::-webkit-details-marker{display:none}.why summary:before{content:"+";border:2px solid var(--ink);width:1.4rem;height:1.4rem;font-family:var(--head);border-radius:6px;place-items:center;line-height:1;display:grid}.why[open] summary:before{content:"−";background:var(--sun)}.why .ans{font-family:var(--head);margin-bottom:.4rem;font-weight:700}.why .src{color:var(--ink-2);margin:0;font-size:.85rem}.fr{vertical-align:middle;text-align:center;font-variant-numeric:lining-nums;flex-direction:column;margin:0 .12em;font-size:.86em;line-height:1.05;display:inline-flex}.fr-n{border-bottom:1.5px solid;padding:0 .15em}.fr-d{padding:0 .15em}.fig{margin:0 0 .9rem}.fig svg{height:auto;display:block}.fig figcaption{margin-bottom:.35rem;font-size:.85rem;font-weight:700}.picto{border-collapse:collapse;font-size:.95rem}.picto th{text-align:left;padding:.3rem .8rem .3rem 0;font-weight:600}.picto td{padding:.3rem 0}.picto .ic{vertical-align:middle;width:1.25rem;height:1.25rem;margin-right:.25rem;display:inline-block}.picto-key{color:var(--ink-2);align-items:center;gap:.35rem;margin:.3rem 0 0;font-size:.85rem;display:flex}.controls{flex-wrap:wrap;align-items:center;gap:.7rem;margin:1.6rem 0 .4rem;display:flex}.btn{font:inherit;font-family:var(--head);border:2px solid var(--ink);cursor:pointer;border-radius:999px;min-height:50px;padding:.6rem 1.3rem;font-size:1.02rem;font-weight:700}.btn-go{background:var(--ink);color:var(--sun);box-shadow:3px 3px 0 var(--sun), 3px 3px 0 2px var(--ink)}.btn-go:hover{background:#2a2a55}.btn-ghost{background:var(--card);color:var(--ink)}.btn-ghost:hover{background:var(--sun-soft)}.score{flex-basis:100%;order:-1}.score:empty{display:none}.score-box{background:var(--sun);border:2px solid var(--ink);border-radius:var(--r);box-shadow:var(--lift);align-items:center;gap:1rem;padding:.8rem 1rem;display:flex}.score-num{font-family:var(--head);white-space:nowrap;font-size:2rem;font-weight:800;line-height:1}.score-box p{margin:0}.nojs-note{color:var(--ink-2);font-size:.92rem}.tbl-wrap{border:2px solid var(--ink);border-radius:var(--r);background:var(--card);overflow-x:auto}table.tbl{border-collapse:collapse;width:100%;font-size:.95rem}.tbl th,.tbl td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:.6rem .75rem}.tbl thead th{background:var(--ink);color:#fff;font-family:var(--head);font-weight:600}.tbl tbody tr:nth-child(2n){background:#fffdf7}.tbl tbody tr:last-child td,.tbl tbody tr:last-child th{border-bottom:0}.tbl .yr{font-family:var(--head);white-space:nowrap;font-size:1.1rem;font-weight:800}.steps{counter-reset:s;gap:.6rem;margin:0 0 1rem;padding:0;list-style:none;display:grid}.steps li{counter-increment:s;padding-left:2.6rem;position:relative}.steps li:before{content:counter(s);background:var(--sun);border:2px solid var(--ink);width:1.9rem;height:1.9rem;font-family:var(--head);border-radius:8px;place-items:center;font-size:.95rem;font-weight:800;display:grid;position:absolute;top:0;left:0}.faq{gap:.7rem;display:grid}.faq details{background:var(--card);border:2px solid var(--ink);border-radius:12px;padding:.2rem 1rem}.faq summary{cursor:pointer;align-items:center;min-height:48px;font-weight:700;display:flex}.faq details[open]{padding-bottom:.6rem}.faq p:last-child{margin-bottom:.2rem}.callout{background:var(--ink);color:#fff;border-radius:var(--r);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.8rem;padding:1.1rem 1.2rem;display:flex}.callout p{max-width:34rem;margin:0}.callout a{color:var(--ink);background:var(--sun);border:2px solid var(--sun);font-family:var(--head);border-radius:999px;align-items:center;min-height:46px;padding:.55rem 1rem;font-weight:700;text-decoration:none;display:inline-flex}.callout a:hover{background:#fff}.callout :focus-visible{outline-color:#fff}.about{gap:1.2rem;display:grid}@media (width>=760px){.about{grid-template-columns:1fr 1fr}}.about section{background:var(--card);border:2px solid var(--ink);border-radius:var(--r);padding:1rem 1.1rem}.about h3{background:var(--sun);border-radius:4px;padding:0 .35rem;display:inline-block}.about p{font-size:.97rem}.sources{padding-left:1.2rem;font-size:.95rem}.sources li{margin-bottom:.35rem}.ad-slot{margin:1.6rem 0}.foot{background:var(--ink);color:#f3f0ff;margin-top:2.5rem;padding:2rem 0 2.4rem;font-size:.93rem}.foot a{color:#fff;text-decoration-color:var(--sun)}.foot a:hover{background:#ffffff1a}.foot-in{gap:1.2rem;display:grid}@media (width>=760px){.foot-in{grid-template-columns:1.4fr 1fr 1fr}}.foot-name{font-family:var(--head);color:var(--sun);margin-bottom:.4rem;font-size:1.1rem;font-weight:700}.foot nav{align-content:start;gap:.1rem;display:grid}.foot nav a{align-items:center;min-height:40px;display:inline-flex}.foot :focus-visible{outline-color:var(--sun);box-shadow:none}@media (width>=900px){.q{padding:1.8rem 1.4rem 1.2rem}}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}#print-key{display:none}@media print{@page{margin:14mm}body{background:#fff;font-size:11pt}.top,.years,.foot,.controls,.ad-slot,.no-print,.skip,.why,.hero .status,.callout{display:none!important}.q{break-inside:avoid;border:1px solid #000;padding:1rem .8rem .6rem;box-shadow:none!important}.q-no{background:#fff}.opt{border:1px solid #999;min-height:0;background:#fff!important}.opt .tag{display:none}.q fieldset{grid-template-columns:1fr 1fr}.band,.panel{padding:.6rem 0}#print-key{break-before:page;display:block}#print-key ol{padding-left:1.4rem}#print-key li{break-inside:avoid;margin-bottom:.5rem}}