@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-cyrillic-ext-opsz-normal.DIwfbPUE.woff2)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:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-cyrillic-opsz-normal.C0olyEE-.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-greek-opsz-normal.DrHU7SY7.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-vietnamese-opsz-normal.BOyYyU_V.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:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-latin-ext-opsz-normal.HoL-AExg.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:"Source Serif 4 Variable";font-style:normal;font-display:swap;font-weight:200 900;src:url(./source-serif-4-latin-opsz-normal.BpEBLj1O.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:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-cyrillic-ext-opsz-italic.Bl6DJqma.woff2)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:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-cyrillic-opsz-italic.Dibx14aP.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-greek-opsz-italic.CMW9dfKg.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-vietnamese-opsz-italic.C-k5pZlm.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:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-latin-ext-opsz-italic.BhUEwDRF.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:"Source Serif 4 Variable";font-style:italic;font-display:swap;font-weight:200 900;src:url(./source-serif-4-latin-opsz-italic.BOLXpvkj.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:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./libre-franklin-cyrillic-ext-wght-normal.BbRulJFC.woff2)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:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./libre-franklin-cyrillic-wght-normal.se3OnFSl.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./libre-franklin-vietnamese-wght-normal.DTJpi3oK.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:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./libre-franklin-latin-ext-wght-normal.CeZZaleV.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:Libre Franklin Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./libre-franklin-latin-wght-normal.CLTz0ja0.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:Courier Prime;font-style:normal;font-display:swap;font-weight:400;src:url(./courier-prime-latin-400-normal.BbyBr73r.woff2)format("woff2"),url(./courier-prime-latin-400-normal.BAlbUm6l.woff)format("woff")}@font-face{font-family:Courier Prime;font-style:normal;font-display:swap;font-weight:700;src:url(./courier-prime-latin-700-normal.D1YCjmaD.woff2)format("woff2"),url(./courier-prime-latin-700-normal.CVvp4Sof.woff)format("woff")}:root{--hue:292;--bg:oklch(.975 .006 var(--hue));--surface:oklch(.995 .002 var(--hue));--sunk:oklch(.945 .012 var(--hue));--ink:oklch(.23 .035 var(--hue));--ink-muted:oklch(.44 .03 var(--hue));--border:oklch(.86 .02 var(--hue));--border-strong:oklch(.72 .03 var(--hue));--brand:oklch(.4 .15 var(--hue));--brand-hover:oklch(.34 .14 var(--hue));--brand-deep:oklch(.25 .09 var(--hue));--brand-tint:oklch(.93 .035 var(--hue));--on-brand:oklch(.985 .01 var(--hue));--brass:oklch(74% .11 78);--brass-deep:oklch(52% .09 70);--card-line:oklch(86% .045 235);--card-red:oklch(63% .17 22);--slip:oklch(90% .11 95);--ok:oklch(48% .12 150);--err:oklch(50% .18 25);--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-24:6rem;--text-xs:.8125rem;--text-sm:clamp(.875rem, .85rem + .1vw, .9375rem);--text-base:clamp(1rem, .97rem + .15vw, 1.0625rem);--text-lg:clamp(1.15rem, 1.05rem + .4vw, 1.35rem);--text-xl:clamp(1.45rem, 1.2rem + 1vw, 2rem);--text-2xl:clamp(1.8rem, 1.3rem + 2.6vw, 3.4rem);--measure:68ch;--radius:10px;--radius-sm:6px;--ease-out:cubic-bezier(.22, 1, .36, 1);--dur-fast:.12s;--dur:.22s;--z-sticky:20;--z-toast:50;--font-serif:"Source Serif 4 Variable", "Source Serif 4", Georgia, serif;--font-sans:"Libre Franklin Variable", "Libre Franklin", system-ui, sans-serif;--font-type:"Courier Prime", "Courier New", monospace;--shadow-card:0 1px 0 oklch(.8 .02 var(--hue)), 0 10px 24px -14px oklch(.3 .06 var(--hue) / .45)}*,:after,:before{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--space-8)}body{background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-size:var(--text-base);-webkit-font-smoothing:antialiased;line-height:1.6}h1,h2,h3{font-family:var(--font-serif);letter-spacing:-.015em;text-wrap:balance;font-weight:640;line-height:1.12}h1{font-size:var(--text-2xl);font-weight:680}h2{font-size:var(--text-xl)}h3{font-size:var(--text-lg)}li,p{text-wrap:pretty}p{max-width:var(--measure)}a{color:var(--brand);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{color:var(--brand-hover);text-decoration-thickness:2px}img,svg{max-width:100%;display:block}:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:2px}::selection{background:var(--slip);color:var(--ink)}.num{font-variant-numeric:tabular-nums}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;overflow:hidden}.skip,.sr-only{position:absolute}.skip{left:var(--space-4);background:var(--brand-deep);color:var(--on-brand);padding:var(--space-3) var(--space-4);z-index:100;border-radius:var(--radius-sm);top:-60px}.skip:focus{top:var(--space-2)}.wrap{width:min(1180px,100% - 2 * var(--space-5));margin-inline:auto}.prose{max-width:var(--measure)}.prose>*+*{margin-top:var(--space-4)}.prose h2{margin-top:var(--space-12)}.prose h3{margin-top:var(--space-8)}.prose ol,.prose ul{padding-left:1.25em}.prose li+li{margin-top:var(--space-2)}.muted{color:var(--ink-muted)}.type{font-family:var(--font-type)}.btn{justify-content:center;align-items:center;gap:var(--space-2);min-height:44px;padding:0 var(--space-5);font:600 var(--text-sm)/1 var(--font-sans);cursor:pointer;transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast),border-color var(--dur-fast),transform var(--dur-fast);border:1px solid #0000;border-radius:999px;text-decoration:none;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--brand);color:var(--on-brand)}.btn-primary:hover{background:var(--brand-hover);color:var(--on-brand)}.btn-ghost{background:var(--surface);color:var(--brand-deep);border-color:var(--border-strong)}.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}.btn-quiet{color:var(--brand);padding:0 var(--space-3);background:0 0}.btn-quiet:hover{background:var(--brand-tint)}.btn[disabled]{opacity:.5;pointer-events:none}.label,label{font-size:var(--text-sm);color:var(--ink);font-weight:600}input[type=date],input[type=search],input[type=text],input[type=url],select,textarea{width:100%;min-height:44px;padding:var(--space-2) var(--space-3);border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);font:400 var(--text-base)/1.4 var(--font-sans);transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}textarea{resize:vertical;min-height:110px}input::-moz-placeholder{color:oklch(.52 .02 var(--hue))}textarea::-moz-placeholder{color:oklch(.52 .02 var(--hue))}input::placeholder,textarea::placeholder{color:oklch(.52 .02 var(--hue))}input:focus-visible,select:focus-visible,textarea:focus-visible{border-color:var(--brand);box-shadow:0 0 0 3px oklch(.4 .15 var(--hue)/.22);outline:none}.ccard{background:var(--surface);box-shadow:var(--shadow-card);padding:var(--space-3) var(--space-5) var(--space-12);border-radius:4px;position:relative}.ccard:after{content:"";left:50%;bottom:var(--space-4);background:var(--bg);width:18px;height:18px;box-shadow:inset 0 1px 2px oklch(.3 .05 var(--hue)/.35);border-radius:50%;margin-left:-9px;position:absolute}.ccard-head{justify-content:space-between;align-items:center;gap:var(--space-3);min-height:2.4rem;padding-bottom:var(--space-2);margin:0 calc(var(--space-5)*-1) var(--space-3);padding-inline:var(--space-5);border-bottom:1.5px solid var(--card-red);display:flex}.ccard-code{font:700 var(--text-sm)/1 var(--font-type);letter-spacing:.04em;color:var(--brand-deep)}.ccard-meta{font:400 var(--text-xs)/1.2 var(--font-type);color:var(--ink-muted);text-align:right}.ref{font-family:var(--font-serif);overflow-wrap:anywhere;font-size:clamp(1.02rem,.98rem + .2vw,1.12rem);line-height:1.8rem}.ccard .ref{background:repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.8rem - 1px),var(--card-line) calc(1.8rem - 1px),var(--card-line) 1.8rem);max-width:none}.ccard ol .ref{background:0 0}.ref.bib{font:400 .92rem/1.8rem var(--font-type);white-space:pre-wrap}.tabs{scrollbar-width:thin;padding-top:var(--space-2);gap:2px;display:flex;overflow-x:auto}.tab{min-height:44px;padding:var(--space-2) var(--space-4) var(--space-2);border:1px solid var(--border);background:var(--sunk);color:var(--ink-muted);font:700 var(--text-xs)/1 var(--font-type);letter-spacing:.03em;cursor:pointer;transition:transform var(--dur-fast) var(--ease-out),background var(--dur-fast),color var(--dur-fast);border-bottom:0;border-radius:10px 10px 0 0;flex:none;transform:translateY(4px)}.tab:hover{color:var(--brand-deep);transform:translateY(0)}.tab[aria-selected=true]{background:var(--surface);color:var(--brand);box-shadow:0 -2px 0 var(--brand) inset;box-shadow:inset 0 3px 0 var(--brand);transform:translateY(0)}.chip{min-height:40px;padding:0 var(--space-4);border:1px solid var(--border-strong);background:var(--surface);color:var(--ink);font:500 var(--text-sm)/1 var(--font-sans);cursor:pointer;transition:background var(--dur-fast),border-color var(--dur-fast),color var(--dur-fast);border-radius:999px;align-items:center;display:inline-flex}.chip:hover{border-color:var(--brand)}.chip[aria-checked=true],.chip[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}.section{padding-block:var(--space-16)}.section+.section{border-top:1px solid var(--border)}table.rules{border-collapse:collapse;width:100%;font-size:var(--text-sm)}table.rules td,table.rules th{text-align:left;vertical-align:top;padding:var(--space-3) var(--space-3);border-bottom:1px solid var(--border)}table.rules th{width:32%;color:var(--brand-deep);font-weight:600}details.faq{border-bottom:1px solid var(--border)}details.faq summary{cursor:pointer;padding:var(--space-4) 0;font:600 var(--text-base)/1.4 var(--font-sans);justify-content:space-between;gap:var(--space-4);min-height:44px;list-style:none;display:flex}details.faq summary:after{content:"+";font:400 1.5rem/1 var(--font-type);color:var(--brand)}details.faq[open] summary:after{content:"−"}details.faq summary::-webkit-details-marker{display:none}details.faq p{padding-bottom:var(--space-4);color:var(--ink)}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}