@font-face{font-family:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/archivo-vietnamese-wght-normal.XAtsl5Q_.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:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/archivo-latin-ext-wght-normal.C4zznr8T.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:Archivo Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/archivo-latin-wght-normal.E0tuGl4L.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{--bg:#fff;--ink:#0d0f14;--mute:#5b606c;--line:#d9dce3;--pale:#f0f1f5;--blue:#1f3cff;--font:"Archivo Variable", "Helvetica Neue", Arial, sans-serif;--wrap:68rem;--pad:clamp(1.15rem, 4vw, 2.5rem)}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{background:var(--bg);color:var(--ink);font-family:var(--font);font-optical-sizing:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:1.0625rem;font-weight:400;line-height:1.55}h1,h2,h3,p,ul,ol,dl,dd,figure,blockquote{margin:0;padding:0}ul,ol{list-style:none}img{max-width:100%;height:auto;display:block}a{color:inherit;text-underline-offset:.2em;text-decoration-thickness:.09em}a:hover{color:var(--blue)}:focus-visible{outline:3px solid var(--blue);outline-offset:3px}::selection{background:var(--blue);color:#fff}button{font:inherit;color:inherit}.skip{background:var(--ink);color:#fff;z-index:10;padding:.6rem 1rem;position:absolute;top:0;left:-999rem}.skip:focus{left:0}.wrap{max-width:var(--wrap);padding-inline:var(--pad);margin:0 auto}.top{background:var(--blue);color:#fff;box-shadow:0 0 0 100vmax var(--blue);clip-path:inset(0 -100vmax -2px);z-index:3;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.4rem 2rem;padding-block:1.4rem 1.2rem;display:flex;position:relative}.brand{letter-spacing:-.02em;font-size:1.5rem;font-weight:800;line-height:1;text-decoration:none}.brand:hover{color:#fff}.brand i{opacity:.7;font-style:normal}.top nav{flex-wrap:wrap;gap:.2rem 1.4rem;font-size:1rem;display:flex}.top nav a{border-bottom:2px solid #0000;padding-block:.25rem;text-decoration:none}.top nav a:hover{color:#fff;border-bottom-color:#fff}.top nav a[aria-current=page]{border-bottom-color:#fff}.top nav .lang{opacity:.7}.foot{border-top:2px solid var(--ink);flex-wrap:wrap;gap:.4rem 1.6rem;margin-top:clamp(4rem,10vw,7rem);padding-block:1.4rem 2.5rem;font-size:.95rem;display:flex}.foot .who{margin-right:auto}.foot a{text-decoration:none}.foot a:hover{text-decoration:underline}.h{letter-spacing:-.025em;text-wrap:balance;font-size:clamp(1.9rem,4.2vw,2.9rem);font-weight:750;line-height:1.06}.lead{text-wrap:pretty;max-width:36rem;font-size:clamp(1.15rem,1.9vw,1.35rem);line-height:1.45}.sub{letter-spacing:-.015em;font-size:1.35rem;font-weight:700;line-height:1.2}.mute{color:var(--mute)}.small{font-size:.92rem}.prose-w{max-width:40rem}.stack>*+*{margin-top:1rem}.block{margin-top:clamp(3.5rem,9vw,6rem)}.mail{font-weight:700}.row{grid-template-columns:minmax(0,15rem) minmax(0,1fr);gap:1rem 3rem;display:grid}@media (width<=760px){.row{grid-template-columns:1fr}}.rules>li{border-top:1px solid var(--line);padding-block:1.1rem}.rules>li:last-child{border-bottom:1px solid var(--line)}.dash>li{padding-left:1.2rem;position:relative}.dash>li+li{margin-top:.35rem}.dash>li:before{content:"";background:var(--blue);width:.6rem;height:2px;position:absolute;top:.72em;left:0}.band{background:var(--blue);color:#fff;padding-block:clamp(1.5rem,5vw,3.5rem) clamp(2rem,5vw,3.5rem)}.band .lead{margin-top:1.1rem}.band-in{grid-template-columns:minmax(0,1fr) minmax(0,15rem);align-items:center;gap:1.5rem 3rem;display:grid}.band{padding-block:clamp(1.2rem,3vw,2rem)}@media (width<=760px){.band-in{grid-template-columns:minmax(0,1fr) 6.5rem;align-items:start;gap:1rem}}.band a:hover{color:#fff}.band ::selection{color:var(--blue);background:#fff}.page{padding-top:clamp(2rem,5vw,3.5rem)}.page>.lead{margin-top:1.1rem}.page>.block:first-child{margin-top:0}.prose{max-width:40rem}.prose>*+*{margin-top:1.1rem}.prose h2{letter-spacing:-.015em;margin-top:2.4rem;font-size:1.35rem;line-height:1.2}.prose h3{margin-top:1.8rem;font-size:1.1rem}.prose ul{padding-left:1.2rem;list-style:outside}.prose ol{padding-left:1.3rem;list-style:decimal}.prose li+li{margin-top:.3rem}.prose pre{padding:1rem;font-size:.85rem;line-height:1.5;overflow-x:auto}.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.prose :not(pre)>code{background:var(--pale);padding:.08em .3em}.prose blockquote{border-left:3px solid var(--blue);padding-left:1rem}.prose table{border-collapse:collapse;font-size:.95rem;display:block;overflow-x:auto}.prose th,.prose td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:.4rem .8rem .4rem 0}.todo{background:#fff4c2;padding:.5rem .8rem;font-size:.92rem}.ch{grid-template-columns:minmax(0,15rem) minmax(0,1fr);align-items:center;gap:1.5rem clamp(2rem,6vw,5rem);padding-block:clamp(2rem,5vw,3.5rem);display:grid}.ch:first-child{padding-top:0}.ch.flip{grid-template-columns:minmax(0,1fr) minmax(0,15rem)}.ch.flip>:first-child{order:2}.ch.wide,.ch.wide.flip{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}.ch h2,.ch h3{letter-spacing:-.025em;text-wrap:balance;max-width:22em;font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:750;line-height:1.08}.ch p{max-width:38rem;margin-top:1rem;font-size:1.15rem;line-height:1.55}.ch-pic img{aspect-ratio:16/10;object-fit:cover;width:100%}.ch-pic figcaption{margin-top:.4rem}@media (width<=760px){.ch,.ch.flip,.ch.wide,.ch.wide.flip{grid-template-columns:1fr}.ch.flip>:first-child{order:0}.ch .ch-fig{width:10rem}}main:focus{outline:none}