:root{--font-instrument-serif:"Instrument Serif";--font-inter-tight:"Inter Tight";--font-devanagari:"Noto Sans Devanagari"}@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-italic-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-italic-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-normal-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-normal-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Inter Tight;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-tight-normal-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Inter Tight;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-tight-normal-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Inter Tight;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-tight-normal-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Inter Tight;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-tight-normal-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Inter Tight;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-tight-normal-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Inter Tight;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-tight-normal-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Inter Tight;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-tight-normal-latin-ext.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c4,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Inter Tight;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-tight-normal-latin.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Noto Sans Devanagari;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-devanagari-normal-devanagari.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf4,u+1cf7-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b0a}@font-face{font-family:Noto Sans Devanagari;font-style:normal;font-weight:500;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-devanagari-normal-devanagari.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf4,u+1cf7-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b0a}@font-face{font-family:Noto Sans Devanagari;font-style:normal;font-weight:600;font-stretch:100%;font-display:swap;src:url(/fonts/noto-sans-devanagari-normal-devanagari.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf4,u+1cf7-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b0a}*,:after,:before{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgb(59 130 246/0.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgb(59 130 246/0.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }:root{--paper:#FBF9F6;--paper-alt:#F2EEE8;--paper-deep:#EAE4DB;--ink:#16181A;--ink70:#4A4F55;--ink50:#5F656C;--rule:#E2DCD5;--rule-strong:#CFC7BC;--coral:#E8462E;--coral-ink:#C6321F;--coral-deep:#BE2E1C;--coral-wash:#FDF0ED;--ok:#1B5E20;--warn:#8A5A00;--focus:#0B57D0;--serif:"Instrument Serif",Georgia,serif;--sans:"Inter Tight",system-ui,-apple-system,sans-serif;--gut:clamp(20px,5vw,72px);--r:2px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}blockquote,dd,dl,figure,h1,h2,h3,h4,h5,ol,p,ul{margin:0}ol,ul{padding:0;list-style:none}a{text-decoration:none}a,button{color:inherit}button{font:inherit}img,svg{display:block}:focus-visible{outline:2px solid var(--focus);outline-offset:3px}.wrap{max-width:1240px;margin:0 auto;padding:0 var(--gut)}.measure{max-width:65ch}.serif{font-family:var(--serif);font-weight:400;letter-spacing:-.015em;line-height:1.12}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.h-xl{font-size:clamp(34px,5.4vw,66px);line-height:1.05;letter-spacing:-.022em}.h-lg,.h-xl{font-family:var(--serif);font-weight:400}.h-lg{font-size:clamp(28px,3.8vw,44px);line-height:1.14;letter-spacing:-.016em}.h-md{font-family:var(--serif);font-weight:400;font-size:clamp(23px,2.6vw,31px);line-height:1.18;letter-spacing:-.012em}.h-sm{font-size:17px;font-weight:600;line-height:1.35}.lede{font-size:19px;line-height:1.58}.body,.lede{color:var(--ink70)}.small{font-size:14.5px;color:var(--ink50);line-height:1.55}.tnum{font-variant-numeric:tabular-nums}.led{display:flex;align-items:baseline;gap:18px;border-top:1px solid var(--rule);padding-top:13px;margin-bottom:40px}.led span{font-size:14px;color:var(--ink50);white-space:nowrap}.led i{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 20px;border-radius:var(--r);border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;transition:background .18s,border-color .18s}.btn:hover{background:var(--coral-ink);border-color:var(--coral-ink)}.btn.ghost{background:transparent;color:var(--ink);border-color:var(--rule-strong)}.btn.ghost:hover{background:transparent;color:var(--coral-ink);border-color:var(--coral-ink)}.btn.sm{padding:9px 15px;font-size:14px}.btn.full{width:100%}.tlink{font-size:15px;font-weight:500;color:var(--coral-ink);border-bottom:1px solid rgba(198,50,31,.34);padding-bottom:2px}.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:4px 10px;border-radius:20px;border:1px solid var(--rule-strong);color:var(--ink70);background:transparent;cursor:pointer;white-space:nowrap}.chip:hover{border-color:var(--coral-ink);color:var(--coral-ink)}.chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}.badge{display:inline-block;font-size:12px;font-weight:600;padding:3px 9px;border-radius:var(--r);letter-spacing:.01em}.badge.open{background:#E7F1E8;color:var(--ok)}.badge.soon{background:#FBF0DC;color:var(--warn)}.badge.chg{background:var(--coral-wash);color:var(--coral-ink)}.badge.shut{background:var(--paper-deep);color:var(--ink50)}.badge.on{background:var(--coral-ink);color:#fff}.badge.des{border:1px solid var(--rule-strong);color:var(--ink70)}.badge.pl{border:1px dashed var(--rule-strong)}.badge.pl,.src{color:var(--ink50)}.src{display:inline-flex;align-items:center;gap:6px;font-size:12.5px}.src b{font-weight:500;color:var(--ink70)}.dot{width:5px;height:5px;border-radius:50%;background:var(--ok);flex:none}.ph{color:var(--rule-strong)}.shot{position:relative;background:var(--paper-deep);border:1px solid var(--rule-strong);background-image:repeating-linear-gradient(45deg,rgba(22,24,26,.028) 0 1px,transparent 1px 9px);display:flex;align-items:flex-end;padding:15px;min-height:220px}.shot p{font-size:13px;line-height:1.45;color:var(--ink50);font-style:italic;max-width:34ch}.webhead{position:sticky;top:0;z-index:60;background:rgba(251,249,246,.95);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}.hbar{gap:26px;height:74px}.brand,.hbar{display:flex;align-items:center}.brand{gap:11px;flex:none}.brand b{font-family:var(--serif);font-size:22px;font-weight:400;letter-spacing:-.01em;line-height:1}.brand b em{font-style:normal;color:var(--coral-ink)}.webnav{margin-left:auto;display:flex;align-items:center;gap:24px}.webnav a{font-size:15px;font-weight:500;color:var(--ink70);position:relative;padding:4px 0}.webnav a:after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--coral);transition:right .18s}.webnav a.on:after,.webnav a:hover:after{right:0}.webnav a.on{color:var(--ink)}.lang{font-size:13.5px;color:var(--ink50);border:1px solid var(--rule-strong);border-radius:var(--r);padding:3px 8px}.mhead{display:none;position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--rule)}.mtop{display:flex;align-items:center;gap:12px;padding:10px 14px 0}.mtop .brand b{font-size:19px}.mburger{margin-left:auto;background:none;border:0;padding:6px;cursor:pointer}.msearch{padding:10px 14px 12px}.msearch,.msearch form{display:flex;gap:9px;align-items:center}.msearch form{flex:1;background:var(--paper-alt);border:1px solid var(--rule-strong);border-radius:24px;padding:10px 14px}.msearch input{flex:1;border:0;background:none;font:inherit;font-size:15px;color:var(--ink);outline:none;min-width:0}.msearch input::-moz-placeholder{color:var(--ink50)}.msearch input::placeholder{color:var(--ink50)}.mvoice{background:none;border:0;padding:0;cursor:pointer;flex:none}.mstrip{display:flex;gap:8px;overflow-x:auto;padding:0 14px 11px;scrollbar-width:none}.mstrip::-webkit-scrollbar{display:none}.tabbar{display:none;position:sticky;bottom:0;z-index:55;background:rgba(251,249,246,.97);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--rule);padding:7px 4px calc(7px + env(safe-area-inset-bottom))}.tabs{display:grid;grid-template-columns:repeat(5,1fr)}.tab{display:flex;flex-direction:column;align-items:center;gap:3px;padding:5px 2px;font-size:11px;font-weight:500;color:var(--ink50);background:none;border:0;cursor:pointer;line-height:1}.tab svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.tab.on{color:var(--coral-ink)}.tab.mid .ring{width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;margin-top:-16px;box-shadow:0 4px 14px rgba(22,24,26,.28)}.tab.mid.on .ring{background:var(--coral-ink)}.tab.mid svg{width:21px;height:21px}.drawer{display:none;position:fixed;inset:0;z-index:70;background:rgba(22,24,26,.45)}.drawer.open{display:block}.drawer-in{position:absolute;top:0;right:0;bottom:0;width:78%;max-width:320px;background:var(--paper);padding:20px 20px calc(20px + env(safe-area-inset-bottom));overflow-y:auto}.drawer h4{font-size:12.5px;color:var(--ink50);font-weight:500;margin:22px 0 8px}.drawer a{display:block;padding:11px 0;border-bottom:1px solid var(--rule);font-size:16px;font-weight:500}.page{display:none}.page.on{display:block}section{padding:88px 0}section.tight{padding:60px 0}.alt{background:var(--paper-alt)}.pagehead{padding:78px 0 44px;border-bottom:1px solid var(--rule)}.crumb{font-size:13.5px;color:var(--ink50);margin-bottom:18px}.crumb a:hover{color:var(--coral-ink)}.plane{position:relative;background:var(--paper-alt);border:1px solid var(--rule);clip-path:polygon(0 0,calc(100% - 76px) 0,100% 76px,100% 100%,0 100%);padding:clamp(28px,4.6vw,64px)}.fold{position:absolute;top:0;right:0;width:76px;height:76px;background:var(--coral);clip-path:polygon(0 0,100% 100%,0 100%)}.fold:after{content:"";position:absolute;inset:0;background:linear-gradient(225deg,rgba(0,0,0,.17),transparent 55%)}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:clamp(24px,4vw,54px);align-items:end}.cta{display:flex;flex-wrap:wrap;gap:13px;align-items:center;margin-top:32px}.ask{border:1px solid var(--ink);background:var(--paper);padding:clamp(22px,3vw,36px)}.ask-top{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:18px}.ask-top h3{font-size:16px;font-weight:600}.ask-top .small{margin-left:auto}.askbox{display:flex;align-items:center;gap:12px;border:1px solid var(--rule-strong);background:var(--paper-alt);padding:14px 16px}.askbox input{flex:1;border:0;background:none;font:inherit;font-size:17px;outline:none;color:var(--ink);min-width:0}.askbox input::-moz-placeholder{color:var(--ink50)}.askbox input::placeholder{color:var(--ink50)}.askrow{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.answer{margin-top:22px;border-top:1px solid var(--rule);padding-top:22px;display:none}.answer.on{display:block}.ansnote{font-size:12.5px;color:var(--coral-ink);background:var(--coral-wash);border:1px solid rgba(232,70,46,.25);padding:7px 11px;border-radius:var(--r);display:inline-block;margin-bottom:16px}.hit{border-top:1px solid var(--rule);padding:16px 0}.hit:first-of-type{border-top:0;padding-top:0}.hit h4{font-size:16.5px;font-weight:600}.hit p{font-size:15.5px;color:var(--ink70);margin-top:5px}.hitmeta{gap:10px 16px;margin-top:9px}.escalate,.hitmeta{display:flex;flex-wrap:wrap;align-items:center}.escalate{margin-top:20px;padding:16px 18px;background:var(--paper-alt);border-left:2px solid var(--coral);gap:16px}.schemegrid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;background:var(--rule)}.scheme{background:var(--paper);padding:24px 24px 20px;display:flex;flex-direction:column;gap:9px}.scheme .top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.scheme h4{font-size:18px;font-weight:600;line-height:1.3}.scheme .what{font-size:15.5px;color:var(--ink70)}.scheme dl{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:2px}.scheme dt{font-size:12.5px;color:var(--ink50)}.scheme dd{font-size:14.5px;font-weight:500;font-variant-numeric:tabular-nums}.scheme .foot{justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--rule)}.scheme .foot,.syncbar{display:flex;align-items:center;flex-wrap:wrap}.syncbar{gap:10px 20px;padding:13px 16px;background:var(--ink);color:#EDE9E3;font-size:13.5px}.syncbar .dot{background:#5FCF74;box-shadow:0 0 0 3px rgba(95,207,116,.2)}.rowlist{border-top:1px solid var(--rule)}.row{display:grid;grid-template-columns:2.3fr 3.4fr 1.6fr;gap:clamp(16px,3vw,44px);padding:30px 0;border-bottom:1px solid var(--rule);align-items:start}.row h3{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1.16}.row:hover h3{color:var(--coral-ink)}.spine{margin-top:10px;font-size:13.5px;color:var(--ink50)}.row p{font-size:16px;color:var(--ink70)}.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--rule)}.nums div{background:var(--paper);padding:26px 20px 22px}.nums .fig{font-family:var(--serif);font-size:clamp(42px,5.4vw,68px);line-height:.95;color:var(--rule-strong);letter-spacing:-.03em}.nums .lab{font-size:15px;font-weight:500;margin-top:12px}.method{display:grid;grid-template-columns:repeat(5,1fr)}.step{border-top:2px solid var(--rule);padding:16px 20px 0 0}.step:first-child{border-top-color:var(--ink)}.step .n{font-family:var(--serif);font-size:19px;color:var(--coral-ink)}.step h4{font-size:16.5px;font-weight:600;margin-top:5px}.step p{font-size:15px;color:var(--ink70);margin-top:6px;line-height:1.5}.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,4.6vw,72px);align-items:start}.two.lean{grid-template-columns:1.25fr .75fr}.three{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--ink)}.three>*{padding:26px 26px 26px 0;border-right:1px solid var(--rule)}.three>:last-child{border-right:0;padding-right:0}.four{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--rule)}.four>*{background:var(--paper);padding:24px 22px}.pull{font-family:var(--serif);font-size:clamp(23px,2.9vw,33px);line-height:1.22;letter-spacing:-.012em;max-width:24ch}.sheet{position:relative;background:var(--paper);border:1px solid var(--rule-strong);clip-path:polygon(0 0,calc(100% - 60px) 0,100% 60px,100% 100%,0 100%);padding:clamp(24px,3.6vw,48px)}.sheet .fold{width:60px;height:60px}.meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:18px;padding-top:15px;border-top:1px solid var(--rule)}.meta dt{font-size:12.5px;color:var(--ink50)}.meta dd{font-size:15.5px;font-weight:500;margin-top:2px;font-variant-numeric:tabular-nums}.bar{height:7px;background:var(--paper-deep);overflow:hidden;margin:12px 0 9px}.bar i{display:block;height:100%;background:var(--coral);width:38%}.ledger{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}.ledger th{text-align:left;font-size:12.5px;font-weight:500;color:var(--ink50);padding:0 0 8px;border-bottom:1px solid var(--ink)}.ledger td:last-child,.ledger th:last-child{text-align:right}.ledger td{padding:10px 0;border-bottom:1px solid var(--rule);font-size:15px}.ledger tr:last-child td{border-bottom:1px solid var(--ink);font-weight:600}.tiers li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--rule);font-size:15px}.tiers b{font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}.tiers span{color:var(--ink70);text-align:right}.unknown{margin-top:26px;padding:18px 20px;border-left:2px solid var(--coral);background:var(--paper-alt)}.kbhero{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,4vw,60px);align-items:end}.kbmode{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--rule);margin-top:28px}.kbmode button{background:var(--paper);border:0;padding:22px;text-align:left;cursor:pointer}.kbmode button h4{font-size:17px;font-weight:600}.kbmode button p{font-size:14.5px;color:var(--ink50);margin-top:5px}.kbmode button[aria-pressed=true]{background:var(--ink);color:#fff}.kbmode button[aria-pressed=true] p{color:#B9BEC4}.filters{display:flex;flex-wrap:wrap;gap:8px;padding:18px 0;border-bottom:1px solid var(--rule)}.artlist{border-top:0}.art{display:grid;grid-template-columns:130px 1fr 150px;gap:clamp(14px,2.6vw,34px);padding:26px 0;border-bottom:1px solid var(--rule);align-items:start}.art .kind{font-size:13px;font-weight:500;color:var(--coral-ink)}.art h3{font-family:var(--serif);font-weight:400;font-size:25px;line-height:1.2}.art:hover h3{color:var(--coral-ink)}.art p{font-size:15.5px;color:var(--ink70);margin-top:7px;max-width:62ch}.art .side{font-size:13.5px;color:var(--ink50);text-align:right}.arthead{max-width:70ch}.artbody{max-width:68ch;font-size:18px;line-height:1.72}.artbody h3{font-family:var(--serif);font-weight:400;font-size:29px;margin:38px 0 12px;line-height:1.2}.artbody p{margin-bottom:18px;color:#24282C}.artbody ul{margin:0 0 20px;padding-left:20px;list-style:disc}.artbody li{margin-bottom:8px;color:#24282C}.artbody blockquote{border-left:2px solid var(--coral);padding-left:20px;margin:26px 0;font-family:var(--serif);font-size:26px;line-height:1.3}.toc{position:sticky;top:100px;font-size:14.5px}.toc h4{font-size:12.5px;color:var(--ink50);font-weight:500;margin-bottom:10px}.toc a{display:block;color:var(--ink70);border-left:2px solid var(--rule);padding:6px 0 6px 12px}.toc a:hover{color:var(--coral-ink);border-left-color:var(--coral)}.sources{margin-top:36px;padding-top:22px;border-top:1px solid var(--ink)}.sources li{padding:9px 0;border-bottom:1px solid var(--rule);font-size:14.5px;color:var(--ink70)}.amounts{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.amt{border:1px solid var(--rule-strong);border-radius:var(--r);padding:12px 16px;font-size:16px;font-weight:500;background:transparent;cursor:pointer;font-variant-numeric:tabular-nums}.amt:hover{border-color:var(--coral-ink);color:var(--coral-ink)}.amt[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}.rail{border:1px solid var(--rule);padding:24px}.rail dt{color:var(--ink50);font-size:12.5px;margin-top:11px}.rail dd{margin-top:2px;font-size:15px}.railnote{margin-top:16px;padding-top:14px;border-top:1px solid var(--rule);font-size:14.5px;color:var(--ink70)}.field{margin-bottom:16px}.field label{display:block;font-size:14px;font-weight:500;margin-bottom:6px}.field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;padding:12px 14px;border:1px solid var(--rule-strong);border-radius:var(--r);background:var(--paper);color:var(--ink)}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink);outline:none}.field .hint{font-size:13px;color:var(--ink50);margin-top:5px}footer{background:var(--ink);color:#EDE9E3;padding:70px 0 36px}footer a:hover{color:#FF8A72}.f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.15)}footer h4{font-size:12.5px;color:#9AA0A6;font-weight:500;margin-bottom:13px}footer li{padding:5px 0;font-size:15px}.legal{font-size:15px;line-height:1.75;font-variant-numeric:tabular-nums}.legal b{font-family:var(--serif);font-weight:400;font-size:20px;display:block;margin-bottom:11px}.f-bot{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;padding-top:22px;font-size:14px;color:#9AA0A6}@media (max-width:819.98px){:root body .webhead{display:none}:root body .mhead,:root body .tabbar{display:block}:root body .wrap{padding:0 16px;max-width:none}:root body section{padding:34px 0}:root body section.tight{padding:24px 0}:root body .pagehead{padding:26px 0 22px}:root body .h-xl{font-size:31px;line-height:1.1}:root body .h-lg{font-size:26px}:root body .h-md{font-size:21px}:root body .lede{font-size:16.5px}:root body #app,:root body body{font-size:16px}:root body .give,:root body .hero-grid,:root body .kbhero,:root body .two,:root body .two.lean{grid-template-columns:1fr;gap:20px}:root body .four,:root body .method,:root body .nums,:root body .schemegrid,:root body .three{grid-template-columns:1fr;gap:0;background:none;border-top:0}:root body .three>*{border-right:0;border-bottom:1px solid var(--rule);padding:20px 0}:root body .four>*,:root body .nums div{border-bottom:1px solid var(--rule);padding:18px 0}:root body .nums div{display:flex;align-items:baseline;gap:14px}:root body .nums .fig{font-size:40px}:root body .nums .lab{margin-top:0}:root body .step{border-top:0;border-left:2px solid var(--rule);padding:2px 0 18px 16px}:root body .step:first-child{border-left-color:var(--coral)}:root body .row{grid-template-columns:1fr;gap:8px;padding:20px 0}:root body .row h3{font-size:22px}:root body .art{grid-template-columns:1fr;gap:6px;padding:18px 0}:root body .art h3{font-size:20px}:root body .art .side{text-align:left}:root body .plane,:root body .sheet{clip-path:polygon(0 0,calc(100% - 44px) 0,100% 44px,100% 100%,0 100%);padding:22px 18px;border-radius:0}:root body .fold,:root body .sheet .fold{width:44px;height:44px}:root body .f-top{grid-template-columns:1fr;gap:26px}:root body footer{padding:36px 0 26px}:root body .toc{display:none}:root body .artbody{font-size:17px}:root body .kbmode{grid-template-columns:1fr}:root body .shot{min-height:170px}:root body .ask{border-left:0;border-right:0;padding:20px 16px}:root body .askbox{border-radius:24px}}.carousel{display:none}@media (max-width:819.98px){:root body .carousel{display:flex;gap:12px;overflow-x:auto;padding:2px 16px 8px;margin:0 -16px;scrollbar-width:none}:root body .carousel::-webkit-scrollbar{display:none}:root body .card{flex:0 0 78%;background:var(--paper);border:1px solid var(--rule);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:8px}:root body .card.wide{flex:0 0 86%}:root body .card h4{font-size:16.5px;font-weight:600;line-height:1.3}:root body .card p{font-size:14.5px;color:var(--ink70)}:root body .deskonly{display:none}}@media (min-width:820px){:root body .mobonly{display:none}}@media (max-width:819.98px){:root body .mtile{display:flex;gap:13px;align-items:center;padding:14px;border:1px solid var(--rule);border-radius:12px;background:var(--paper);margin-bottom:10px}:root body .mtile .ic{width:40px;height:40px;border-radius:10px;background:var(--paper-alt);flex:none;display:flex;align-items:center;justify-content:center;color:var(--coral-ink);font-family:var(--serif);font-size:19px}:root body .mtile h4{font-size:15.5px;font-weight:600}:root body .mtile p{font-size:13.5px;color:var(--ink50);line-height:1.4}:root body .stickycta{position:sticky;bottom:0;background:linear-gradient(to top,var(--paper) 66%,rgba(251,249,246,0));padding:14px 16px 12px;margin:0 -16px}}@media (min-width:820px) and (max-width:860px){:root body .webnav{display:none}:root body .four,:root body .hero-grid,:root body .method,:root body .nums,:root body .schemegrid,:root body .three,:root body .two,:root body .two.lean{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}:root{--serif:var(--font-instrument-serif),"Instrument Serif",Georgia,serif;--sans:var(--font-inter-tight),"Inter Tight",system-ui,-apple-system,sans-serif}:lang(hi){font-family:var(--font-devanagari),var(--sans)}[lang=en]{font-family:var(--sans)}html{overflow-x:hidden}body,html{max-width:100vw}@supports (overflow-x:clip){body,html{overflow-x:clip}}.webnav a.btn{color:#fff}@media (min-width:820px){.four.five{grid-template-columns:repeat(5,1fr)}}.webnav a.lang{font-size:13.5px;font-weight:400;color:var(--ink50);padding:3px 8px}.webnav a.lang:after{content:none}.lang:hover,.webnav a.lang:hover{border-color:var(--coral-ink);color:var(--coral-ink)}.langnote{background:var(--coral-wash);border-bottom:1px solid rgba(232,70,46,.25);color:var(--coral-ink);font-size:13.5px;line-height:1.5;padding:10px 0}.langnote .wrap{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:baseline}.langnote .tlink{font-size:13.5px}.skip{position:absolute;left:12px;top:-60px;z-index:300;background:var(--ink);color:#fff;padding:10px 14px;border-radius:var(--r);font-size:15px;font-weight:600}.skip:focus{top:12px}.container{width:100%}@media (min-width:480px){.container{max-width:480px}}@media (min-width:820px){.container{max-width:820px}}@media (min-width:1024px){.container{max-width:1024px}}@media (min-width:1280px){.container{max-width:1280px}}.visible{visibility:visible}.static{position:static}.sticky{position:sticky}.block{display:block}.inline{display:inline}.flex{display:flex}.table{display:table}.border{border-width:1px}.ring{--tw-ring-offset-shadow:var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow:var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow,0 0 #0000)}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}