@font-face{font-family:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/bricolage-grotesque-vietnamese-wght-normal.BUzh504Q.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:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/bricolage-grotesque-latin-ext-wght-normal.CcLUaPy7.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:Bricolage Grotesque Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/bricolage-grotesque-latin-wght-normal.DLoelf7F.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:Instrument Sans Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/instrument-sans-latin-ext-wght-normal.B5bTHO_g.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:Instrument Sans Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/instrument-sans-latin-wght-normal.BbzFLZTg.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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-cyrillic-ext-wght-normal.X_5orZeX.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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-cyrillic-wght-normal.DiZS0aHC.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-symbols2-wght-normal.CO5SzqOn.woff2)format("woff2-variations");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-vietnamese-wght-normal.DadHysG0.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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-latin-ext-wght-normal.Bwz-egvJ.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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/geist-mono-latin-wght-normal.XN7g48iV.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:#070b16;--bg-2:#0b1220;--surface:#0d1526;--panel:#0c1424;--border:#94a3b824;--border-strong:#94a3b84d;--text:#e8edf7;--text-muted:#93a0b8;--text-dim:#7b8aa3;--accent:#3b82f6;--accent-strong:#60a5fa;--accent-2:#7c3aed;--accent-2-strong:#a78bfa;--on-accent:#fff;--accent-cta:#2563eb;--accent-cta-hover:#1d4ed8;--signal-allow:#22d3ee;--signal-block:#f43f5e;--signal-warn:#f59e0b;--signal-bypass:#a78bfa;--signal-allow-soft:#22d3ee24;--signal-block-soft:#f43f5e24;--signal-warn-soft:#f59e0b24;--signal-bypass-soft:#a78bfa24;--focus:#60a5fa;--font-display:"Bricolage Grotesque Variable", "Bricolage Grotesque", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-body:"Instrument Sans Variable", "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:"Geist Mono Variable", "Geist Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--fs-display-1:clamp(2.6rem, 6vw, 5rem);--fs-display-2:clamp(2rem, 4.4vw, 3.2rem);--fs-h3:clamp(1.3rem, 2.4vw, 1.7rem);--fs-body:1.02rem;--fs-small:.875rem;--fs-micro:.78rem;--lh-display:1.03;--lh-heading:1.12;--lh-tight:1.3;--lh-body:1.62;--ls-display:-.022em;--ls-heading:-.012em;--ls-body:0;--ls-micro:.08em;--sp-0:0;--sp-1:.25rem;--sp-2:.5rem;--sp-3:.75rem;--sp-4:1rem;--sp-5:1.5rem;--sp-6:2rem;--sp-7:3rem;--sp-8:4rem;--sp-9:5rem;--sp-10:6rem;--sp-11:8rem;--sp-12:10rem;--radius:0;--radius-pill:999px;--container-wide:1360px;--container-default:1200px;--container-narrow:760px;--gutter:clamp(1.25rem, 4vw, 2.5rem);--header-h:68px;--section-y:clamp(4rem, 9vw, 8rem);--section-y-tight:clamp(3rem, 6vw, 5rem);--section-y-loose:clamp(6rem, 13vw, 12rem);--z-base:0;--z-raised:10;--z-header:100;--z-menu:200;--z-overlay:300;--z-toast:400;--dur-fast:.16s;--dur-base:.26s;--dur-slow:.48s;--dur-marquee:32s;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-emph:cubic-bezier(.16, 1, .3, 1);--reveal-distance:24px;--shadow-1:0 1px 2px #02061766;--shadow-2:0 12px 40px -18px #020617b3}[data-chapter=verified]{--bg:#f5f5f0;--bg-2:#eceae3;--surface:#fff;--panel:#fff;--border:#14182824;--border-strong:#14182847;--text:#0e1220;--text-muted:#4a5266;--text-dim:#5c6472;--accent:#2563eb;--accent-strong:#1d4ed8;--accent-2:#6d28d9;--accent-2-strong:#7c3aed;--on-accent:#fff;--accent-cta:#1d4ed8;--accent-cta-hover:#1e40af;--signal-allow:#0e7490;--signal-block:#be123c;--signal-warn:#b45309;--signal-bypass:#6d28d9;--signal-allow-soft:#0e74901f;--signal-block-soft:#be123c1f;--signal-warn-soft:#b453091f;--signal-bypass-soft:#6d28d91f;--focus:#2563eb;--shadow-1:0 1px 2px #1418280f;--shadow-2:0 16px 44px -22px #14182838}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}ul[role=list],ol[role=list]{padding:0;list-style:none}img,picture,svg,video,canvas{max-width:100%;display:block}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:0}a{color:var(--accent-strong);text-underline-offset:.2em;text-decoration:none}a:hover{text-decoration:underline}body{background-color:var(--bg);color:var(--text);font-family:var(--font-body);font-size:var(--fs-body);line-height:var(--lh-body);letter-spacing:var(--ls-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100dvh;overflow-x:hidden}[data-chapter]{background-color:var(--bg);color:var(--text)}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:var(--lh-heading);letter-spacing:var(--ls-heading);text-wrap:balance}p{text-wrap:pretty}code,pre,kbd,samp{font-family:var(--font-mono);font-size:.94em}small{font-size:var(--fs-small)}strong{font-weight:650}hr{border:0;border-top:1px solid var(--border)}.heading{font-family:var(--font-display);font-weight:700;line-height:var(--lh-heading);letter-spacing:var(--ls-heading);text-wrap:balance}.heading--display-1{font-size:var(--fs-display-1);line-height:var(--lh-display);letter-spacing:var(--ls-display)}.heading--display-2{font-size:var(--fs-display-2);line-height:var(--lh-display);letter-spacing:var(--ls-display)}.heading--h3{font-size:var(--fs-h3);line-height:var(--lh-tight)}.container{width:100%;padding-inline:var(--gutter);margin-inline:auto}.container--wide{max-width:var(--container-wide)}.container--default{max-width:var(--container-default)}.container--narrow{max-width:var(--container-narrow)}.section{padding-block:var(--section-y);background-color:var(--bg);color:var(--text)}.section--tight{padding-block:var(--section-y-tight)}.section--loose{padding-block:var(--section-y-loose)}.stack{gap:var(--sp-4);flex-direction:column;display:flex}.ledger{border:1px solid var(--border);background-color:var(--surface)}.ledger>*{padding:var(--sp-4) var(--sp-5)}.ledger>*+*{border-top:1px solid var(--border)}.btn{justify-content:center;align-items:center;gap:var(--sp-2);font-family:var(--font-body);font-weight:600;font-size:var(--fs-small);border-radius:var(--radius);padding:.72rem var(--sp-4);transition:background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);border:1px solid #0000;line-height:1;text-decoration:none;display:inline-flex}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn--md{padding:.72rem var(--sp-4)}.btn--lg{padding:.95rem var(--sp-6);font-size:var(--fs-body)}.btn--primary{background-color:var(--accent-cta);border-color:var(--accent-cta);color:var(--on-accent)}.btn--primary:hover{background-color:var(--accent-cta-hover);border-color:var(--accent-cta-hover)}.btn--ghost{border-color:var(--border-strong);color:var(--text);background-color:#0000}.btn--ghost:hover{border-color:var(--accent);color:var(--accent-strong)}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}::selection{background-color:var(--accent);color:var(--on-accent)}.skip-link{top:var(--sp-3);left:var(--sp-3);z-index:var(--z-overlay);background-color:var(--accent-cta);color:var(--on-accent);font-size:var(--fs-small);padding:var(--sp-2) var(--sp-4);transition:transform var(--dur-fast) var(--ease-out);font-weight:600;position:fixed;transform:translateY(-200%)}.skip-link:focus{transform:none}.visually-hidden{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}a[data-external=true]:after{content:"↗";opacity:.7;margin-left:.28em;font-size:.82em;line-height:1}.reveal{opacity:1;transform:none}html.js .reveal{opacity:0;transform:translateY(var(--reveal-distance));transition:opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);will-change:opacity, transform}html.js .reveal.is-visible{opacity:1;transform:none}.reveal--d1{transition-delay:70ms}.reveal--d2{transition-delay:.14s}.reveal--d3{transition-delay:.21s}.reveal--d4{transition-delay:.28s}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}html.js .reveal,html.js .reveal.is-visible{opacity:1;transition:none;transform:none}}.site-header[data-astro-cid-nen7h5rs]{z-index:var(--z-header);background-color:color-mix(in srgb, var(--bg) 84%, transparent);backdrop-filter:saturate(140%)blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0}.site-header[data-astro-cid-nen7h5rs][data-scrolled]{border-bottom-color:var(--border-strong);box-shadow:var(--shadow-1)}.site-header__inner[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--sp-5);min-height:var(--header-h);display:flex}.brand[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--sp-3);color:var(--text);text-decoration:none;display:inline-flex}.brand[data-astro-cid-nen7h5rs]:hover{text-decoration:none}.brand__mark[data-astro-cid-nen7h5rs]{flex:none;width:28px;height:28px}.brand__name[data-astro-cid-nen7h5rs]{font-family:var(--font-display);letter-spacing:-.01em;font-size:1.05rem;font-weight:700}.brand__guard[data-astro-cid-nen7h5rs]{color:var(--text-muted);font-weight:600}.site-nav[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--sp-6);margin-left:auto;display:flex}.site-nav__list[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--sp-5);padding:0;list-style:none;display:flex}.site-nav__link[data-astro-cid-nen7h5rs]{color:var(--text-muted);font-size:var(--fs-small);white-space:nowrap;font-weight:600}.site-nav__link[data-astro-cid-nen7h5rs]:hover{color:var(--text);text-decoration:none}.site-nav__link[data-astro-cid-nen7h5rs][aria-current=page]{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent-strong);text-underline-offset:.35em;text-decoration-thickness:2px}.site-nav__actions[data-astro-cid-nen7h5rs],.site-header__aside[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--sp-3);display:flex}.lang-switch[data-astro-cid-nen7h5rs]{font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:var(--ls-micro);text-transform:uppercase;color:var(--text-muted);border:1px solid var(--border-strong);padding:.42rem .55rem;line-height:1}.lang-switch[data-astro-cid-nen7h5rs]:hover{color:var(--text);border-color:var(--accent);text-decoration:none}.nav-toggle[data-astro-cid-nen7h5rs]{border:1px solid var(--border-strong);flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:.6rem;display:none}.nav-toggle__bar[data-astro-cid-nen7h5rs]{background-color:var(--text);width:100%;height:2px;transition:transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);display:block}.site-header[data-astro-cid-nen7h5rs][data-nav-open] .nav-toggle__bar[data-astro-cid-nen7h5rs]:first-child{transform:translateY(7px)rotate(45deg)}.site-header[data-astro-cid-nen7h5rs][data-nav-open] .nav-toggle__bar[data-astro-cid-nen7h5rs]:nth-child(2){opacity:0}.site-header[data-astro-cid-nen7h5rs][data-nav-open] .nav-toggle__bar[data-astro-cid-nen7h5rs]:nth-child(3){transform:translateY(-7px)rotate(-45deg)}@media (width<=899px){.nav-toggle[data-astro-cid-nen7h5rs]{display:inline-flex}.site-nav[data-astro-cid-nen7h5rs]{align-items:stretch;gap:var(--sp-5);background-color:var(--bg-2);border-bottom:1px solid var(--border);padding:var(--sp-5) var(--gutter) var(--sp-6);flex-direction:column;margin-left:0;display:none;position:absolute;top:100%;left:0;right:0}.site-header[data-astro-cid-nen7h5rs][data-nav-open] .site-nav[data-astro-cid-nen7h5rs]{display:flex}.site-nav__list[data-astro-cid-nen7h5rs]{align-items:flex-start;gap:var(--sp-4);flex-direction:column}.site-nav__link[data-astro-cid-nen7h5rs]{font-size:1.05rem}.site-nav__actions[data-astro-cid-nen7h5rs]{flex-direction:column;align-items:stretch}}.site-footer[data-astro-cid-jo6i4kqk]{background-color:var(--bg-2);color:var(--text);border-top:1px solid var(--border);padding-block:var(--sp-9) var(--sp-6)}.site-footer__inner[data-astro-cid-jo6i4kqk]{gap:var(--sp-9);grid-template-columns:minmax(220px,1fr) 2fr;display:grid}.site-footer__wordmark[data-astro-cid-jo6i4kqk]{font-family:var(--font-display);letter-spacing:-.01em;font-size:1.1rem;font-weight:700}.site-footer__guard[data-astro-cid-jo6i4kqk]{color:var(--text-muted);font-weight:600}.site-footer__tagline[data-astro-cid-jo6i4kqk]{margin-top:var(--sp-3);color:var(--text-muted);font-size:var(--fs-small);max-width:30ch}.site-footer__cols[data-astro-cid-jo6i4kqk]{gap:var(--sp-6);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.footer-col__title[data-astro-cid-jo6i4kqk]{font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:var(--ls-micro);text-transform:uppercase;color:var(--text-dim);margin-bottom:var(--sp-4);font-weight:500}.footer-col__list[data-astro-cid-jo6i4kqk]{gap:var(--sp-3);flex-direction:column;padding:0;list-style:none;display:flex}.footer-col__link[data-astro-cid-jo6i4kqk]{color:var(--text-muted);font-size:var(--fs-small)}.footer-col__link[data-astro-cid-jo6i4kqk]:hover{color:var(--text);text-decoration:none}.site-footer__legal[data-astro-cid-jo6i4kqk]{justify-content:space-between;align-items:center;gap:var(--sp-4);margin-top:var(--sp-8);padding-top:var(--sp-5);border-top:1px solid var(--border);display:flex}.site-footer__copy[data-astro-cid-jo6i4kqk]{color:var(--text-dim);font-size:var(--fs-micro)}.site-footer__lang[data-astro-cid-jo6i4kqk]{align-items:center;gap:var(--sp-2);font-family:var(--font-mono);font-size:var(--fs-micro);letter-spacing:var(--ls-micro);text-transform:uppercase;display:flex}.site-footer__lang-link[data-astro-cid-jo6i4kqk]{color:var(--text-dim)}.site-footer__lang-link[data-astro-cid-jo6i4kqk][aria-current=true]{color:var(--text)}.site-footer__lang-link[data-astro-cid-jo6i4kqk]:hover{color:var(--text);text-decoration:none}@media (width<=899px){.site-footer__inner[data-astro-cid-jo6i4kqk]{gap:var(--sp-8);grid-template-columns:1fr}.site-footer__cols[data-astro-cid-jo6i4kqk]{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=520px){.site-footer__legal[data-astro-cid-jo6i4kqk]{flex-direction:column;align-items:flex-start}}