@font-face{font-family:Fraunces;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/fraunces-latin-wght-normal.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:Fraunces;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/fraunces-latin-ext-wght-normal.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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Fraunces;font-style:italic;font-weight:100 900;font-display:swap;src:url(/fonts/fraunces-latin-wght-italic.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:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/inter-latin-wght-normal.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:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/inter-latin-ext-wght-normal.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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/space-mono-latin-400.woff2)format("woff2");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:Space Mono;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/space-mono-latin-700.woff2)format("woff2");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{--color-bg:#f7f5ef;--color-bg-deep:#efebe0;--color-surface:#fffefa;--color-surface-soft:#f1eee5;--color-surface-glass:#fffefac7;--color-dark:#0d1b16;--color-dark-soft:#16281f;--color-ink:#12211b;--color-ink-soft:#283a32;--color-ink-muted:#5d6b63;--color-line:#e0dcd1;--color-line-strong:#c9c4b6;--color-on-dark:#f4f1e8;--color-on-dark-muted:#a9b4ac;--color-moss:#2f6b52;--color-moss-soft:#e4ece2;--color-accent:#a94a27;--color-accent-hover:#8c3b1d;--color-brown-soft:var(--color-ink-muted);--font-display:"Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--font-body:"Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:"Space Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--text-sm:.875rem;--text-base:1.0625rem;--text-md:clamp(1.0625rem, .98rem + .28vw, 1.1875rem);--text-lg:clamp(1.25rem, 1.1rem + .6vw, 1.5rem);--text-2xl:clamp(2rem, 1.4rem + 2.4vw, 3rem);--text-display:clamp(3rem, 1.6rem + 6.2vw, 6.6rem);--text-display-sm:clamp(2.5rem, 1.6rem + 3.6vw, 4.4rem);--measure:38rem;--measure-wide:46rem;--radius-xs:6px;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-xl:32px;--radius-pill:999px;--shadow-xs:0 1px 2px #12211b0d;--shadow-sm:0 1px 3px #12211b0d, 0 10px 24px -18px #12211b59;--shadow-md:0 2px 6px #12211b0d, 0 28px 60px -36px #12211b73;--shadow-lg:0 4px 12px #12211b0f, 0 48px 110px -52px #12211b80;--page-gutter:clamp(1.15rem, 4vw, 3.5rem);--content-max:84rem;--header-height:4.25rem;--section-space:clamp(4.5rem, 10vw, 9rem);--marker:.4rem;--rule-hair:1px solid var(--color-line);--button-height:2.9rem;--duration-fast:.16s;--duration-base:.26s;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-in-out:cubic-bezier(.65, .05, .36, 1);--ease-page:cubic-bezier(.16, 1, .3, 1);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:var(--font-body);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,:before,:after{box-sizing:border-box}*{margin:0}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 1.5rem);scrollbar-color:var(--color-line-strong) transparent;scrollbar-width:thin;overflow-x:hidden}body{background-color:var(--color-bg);min-height:100dvh;color:var(--color-ink);font-family:var(--font-body);font-size:var(--text-base);letter-spacing:-.006em;-webkit-font-smoothing:antialiased;font-weight:400;line-height:1.65}img,svg,canvas{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit;accent-color:var(--color-moss)}button{cursor:pointer;background:0 0;border:0;padding:0}p{text-wrap:pretty}h1,h2,h3,h4{text-wrap:balance;font-weight:500;line-height:1.05}ul,ol{margin:0;padding:0;list-style:none}::selection{background-color:var(--color-ink);color:var(--color-on-dark)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}:is(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:var(--radius-xs)}a{color:inherit;text-decoration:none}.container{width:100%;max-width:var(--content-max);padding-inline:var(--page-gutter);margin-inline:auto}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;font-size:var(--text-sm);color:var(--color-on-dark);background-color:var(--color-ink);border-radius:var(--radius-pill);transition:transform var(--duration-base) var(--ease-out);padding:.7rem 1rem;font-weight:600;position:fixed;top:.75rem;left:.75rem;transform:translateY(-160%)}.skip-link:focus-visible{transform:none}.eyebrow{font-family:var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--color-moss);align-items:center;gap:.6rem;font-size:.68rem;font-weight:700;line-height:1.4;display:inline-flex}.eyebrow--accent{color:var(--color-accent)}.eyebrow--muted{color:var(--color-ink-muted)}.eyebrow__dot{background-color:currentColor;border-radius:50%;width:.38rem;height:.38rem}.display{font-family:var(--font-display);font-size:var(--text-display);letter-spacing:-.035em;font-variation-settings:"SOFT" 20, "WONK" 0;font-weight:400;line-height:.94}.display em{color:var(--color-accent);font-style:italic}.section-title{max-width:18ch;font-family:var(--font-display);font-size:var(--text-2xl);letter-spacing:-.025em;font-weight:400;line-height:1.04}.lede{max-width:var(--measure);font-size:var(--text-lg);color:var(--color-ink-muted);line-height:1.55}.rule-soft{background:linear-gradient(to right, transparent, var(--color-line-strong) 12%, var(--color-line-strong) 88%, transparent);height:1px}.read-progress{z-index:60;pointer-events:none;background-color:#0000;width:100%;height:2px;position:fixed;top:0;left:0}.read-progress__bar{background:linear-gradient(90deg, var(--color-moss), var(--color-accent));width:100%;height:100%;transform:scaleX(var(--progress,0));transform-origin:0;transition:transform 90ms linear}h1,h2,h3,.font-display{font-variation-settings:"SOFT" 20, "WONK" 0}.page--home{overflow-x:clip}.hero{min-height:100svh;padding-top:calc(var(--header-height) + clamp(1.5rem, 5vh, 4rem));flex-direction:column;justify-content:center;padding-bottom:clamp(3rem,7vh,5rem);display:flex;position:relative;overflow:hidden}.hero__field{z-index:0;pointer-events:none;position:absolute;inset:0;overflow:hidden}.hero__orb{filter:blur(10px);border-radius:50%;display:block;position:absolute}.hero__orb--moss{aspect-ratio:1;background:radial-gradient(circle,#2f6b523d,#2f6b5200 68%);width:min(56rem,72vw);top:-28%;right:-12%}.hero__orb--ember{aspect-ratio:1;background:radial-gradient(circle,#b4512e29,#b4512e00 68%);width:min(44rem,60vw);bottom:-30%;left:-14%}.hero__mesh{background-image:linear-gradient(90deg,#12211b0d 1px,#0000 1px),linear-gradient(#12211b0d 1px,#0000 1px);background-size:4.5rem 4.5rem;position:absolute;inset:0;-webkit-mask-image:radial-gradient(70% 60% at 62% 42%,#000 10%,#0000 72%);mask-image:radial-gradient(70% 60% at 62% 42%,#000 10%,#0000 72%)}.hero__inner{z-index:1;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);align-items:center;gap:clamp(2rem,5vw,4.5rem);display:grid;position:relative}.hero__copy{flex-direction:column;align-items:flex-start;max-width:38rem;display:flex}.pill-badge{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);border:1px solid var(--color-line);border-radius:var(--radius-pill);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:color var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), background-color var(--duration-base) var(--ease-out);background-color:#fffefab3;align-items:center;gap:.55rem;padding:.4rem .9rem .4rem .7rem;font-size:.66rem;font-weight:700;display:inline-flex}.pill-badge .icon{width:.8rem;height:.8rem}.pill-badge:hover{color:var(--color-ink);background-color:var(--color-surface);border-color:var(--color-line-strong)}.pill-badge__dot{background-color:var(--color-accent);border-radius:50%;width:.42rem;height:.42rem;box-shadow:0 0 0 3px #b4512e24}.hero__title{letter-spacing:-.04em;margin-top:clamp(1.2rem,2.6vh,2rem);font-size:clamp(3rem,6.1vw,6.4rem);line-height:.91}.hero__title .line{display:block}.hero__title em{color:var(--color-accent);font-style:italic}.hero__question{max-width:31rem;font-size:var(--text-lg);color:var(--color-ink-muted);margin-top:1.35rem;line-height:1.55}.hero__actions{flex-wrap:wrap;gap:.7rem;margin-top:1.9rem;display:flex}.hero__meta{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-muted);flex-wrap:wrap;gap:.4rem 1.3rem;margin-top:1.9rem;font-size:.68rem;font-weight:700;display:flex}.hero__meta li{align-items:center;gap:.5rem;display:inline-flex}.hero__meta li+li:before{content:"";background-color:var(--color-line-strong);border-radius:50%;width:3px;height:3px}.hero__visual{border-radius:var(--radius-xl);box-shadow:var(--shadow-lg), 0 0 0 1px #12211b0d;-webkit-backdrop-filter:blur(20px)saturate(1.3);backdrop-filter:blur(20px)saturate(1.3);background-color:#fffefacc;border:1px solid #ffffffe6;flex-direction:column;gap:.9rem;padding:.9rem;display:flex;position:relative}.hero__visual:after{z-index:-1;content:"";border-radius:inherit;background:radial-gradient(circle at 70% 0,#2f6b5224,#0000 60%);position:absolute;inset:0}.hero__visual-head{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--color-ink-muted);justify-content:space-between;align-items:center;padding:.2rem .45rem 0;font-size:.64rem;font-weight:700;display:flex}.hero__live{color:var(--color-moss);align-items:center;gap:.45rem;display:inline-flex}.hero__live-dot{background-color:var(--color-moss);border-radius:50%;width:.38rem;height:.38rem;animation:2.6s ease-in-out infinite pulse-live}@keyframes pulse-live{0%,to{box-shadow:0 0 #2f6b5259}50%{box-shadow:0 0 0 4px #2f6b5200}}.hero__instrument{min-width:0;animation:9s ease-in-out infinite float-plate}.hero__visual .model{background-color:var(--color-surface);border-color:var(--color-line);border-radius:var(--radius-lg);box-shadow:none}.hero__caption{color:var(--color-ink-muted);padding:0 .45rem .35rem;font-size:.78rem;line-height:1.5}.hero__scroll{z-index:1;font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--color-ink-muted);transition:color var(--duration-base) var(--ease-out);align-self:center;align-items:center;gap:.45rem;margin-top:clamp(1.5rem,4vh,2.5rem);font-size:.62rem;font-weight:700;display:inline-flex;position:relative}.hero__scroll .icon{width:.9rem;height:.9rem;animation:nudge-down 2.4s var(--ease-in-out) infinite}.hero__scroll:hover{color:var(--color-ink)}@keyframes nudge-down{0%,to{transform:translateY(0)}50%{transform:translateY(3px)}}.ticker{z-index:1;border-block:1px solid var(--color-line);background-color:var(--color-bg);padding-block:.95rem;position:relative;overflow:hidden}.ticker__track{width:max-content;animation:46s linear infinite ticker-scroll;display:flex}.ticker:hover .ticker__track{animation-play-state:paused}@keyframes ticker-scroll{0%{transform:translate(0)}to{transform:translate(-50%)}}.ticker__list{flex:none;align-items:center;display:flex}.ticker__item{font-family:var(--font-mono);letter-spacing:.18em;text-transform:uppercase;color:var(--color-ink-muted);white-space:nowrap;align-items:center;gap:2.4rem;padding-inline:1.2rem;font-size:.7rem;font-weight:700;display:inline-flex}.ticker__item:after{content:"";background-color:var(--color-accent);opacity:.75;border-radius:50%;width:5px;height:5px}.argument{padding-block:var(--section-space)}.argument__head{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:end;gap:clamp(1.5rem,4vw,4rem);margin-bottom:clamp(2.2rem,5vw,3.5rem);display:grid}.argument__head .eyebrow{grid-column:1/-1}.argument__head .section-title{font-size:var(--text-display-sm)}.argument__head .lede{font-size:var(--text-base);line-height:1.7}.argument__grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;display:grid}.step-card{background-color:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-lg);min-height:15rem;box-shadow:var(--shadow-xs);transition:transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);flex-direction:column;padding:1.4rem;display:flex}.step-card:hover{border-color:var(--color-line-strong);box-shadow:var(--shadow-md);transform:translateY(-4px)}.step-card__head{justify-content:space-between;align-items:center;display:flex}.step-card__number{font-family:var(--font-mono);letter-spacing:.12em;color:var(--color-accent);font-size:.72rem;font-weight:700}.step-card__dot{background-color:var(--color-moss);border-radius:50%;width:.45rem;height:.45rem}.step-card__title{font-family:var(--font-display);letter-spacing:-.02em;margin-top:auto;padding-top:2rem;font-size:1.65rem;font-weight:400;line-height:1.1}.step-card__body{color:var(--color-ink-muted);margin-top:.55rem;font-size:.92rem;line-height:1.6}.chapters{padding-block:var(--section-space);background-color:var(--color-bg-deep);border-top:1px solid #12211b0f}.chapters__inner{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:start;gap:clamp(2rem,6vw,5rem);display:grid}.chapters__intro{top:calc(var(--header-height) + 2rem);flex-direction:column;align-items:flex-start;display:flex;position:sticky}.chapters__title{font-family:var(--font-display);font-size:var(--text-display-sm);letter-spacing:-.035em;margin-top:1.1rem;font-weight:400;line-height:.98}.chapters__summary{max-width:26rem;color:var(--color-ink-muted);margin-top:1.1rem}.chapters__meta{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);flex-wrap:wrap;gap:.4rem 1.1rem;margin-top:1.3rem;font-size:.66rem;font-weight:700;display:flex}.chapters__meta li+li:before{content:"/";color:var(--color-line-strong);margin-right:1.1rem}.chapters__action{margin-top:1.8rem}.chapter-list{background-color:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);overflow:hidden}.chapter-list__item+.chapter-list__item{border-top:1px solid var(--color-line)}.chapter-row{transition:background-color var(--duration-base) var(--ease-out), padding var(--duration-base) var(--ease-out);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;padding:1.05rem 1.4rem;display:grid}.chapter-row:hover{background-color:var(--color-moss-soft);padding-left:1.6rem}.chapter-row__number{font-family:var(--font-mono);letter-spacing:.08em;color:var(--color-accent);font-size:.72rem;font-weight:700}.chapter-row__body{flex-direction:column;gap:.2rem;min-width:0;display:flex}.chapter-row__title{letter-spacing:-.012em;color:var(--color-ink);font-size:1rem;font-weight:550;line-height:1.3}.chapter-row__kind{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);font-size:.62rem;font-weight:700}.chapter-row__icon{width:2rem;height:2rem;color:var(--color-ink-muted);border:1px solid var(--color-line);transition:color var(--duration-base) var(--ease-out), background-color var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);border-radius:50%;place-items:center;display:grid}.chapter-row__icon .icon{width:.85rem;height:.85rem}.chapter-row:hover .chapter-row__icon{color:var(--color-on-dark);background-color:var(--color-ink);border-color:var(--color-ink);transform:rotate(8deg)}.closing{color:var(--color-on-dark);background-color:var(--color-dark);padding-block:clamp(5rem,12vw,9rem);position:relative;overflow:hidden}.closing__field{pointer-events:none;position:absolute;inset:0}.closing__ring{border:1px solid #f4f1e81a;border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.closing__ring--1{width:34rem;height:34rem}.closing__ring--2{border-color:#f4f1e812;width:54rem;height:54rem}.closing__ring--3{border-color:#f4f1e80d;width:76rem;height:76rem}.closing__inner{z-index:1;text-align:center;flex-direction:column;align-items:center;max-width:60rem;display:flex;position:relative}.closing__eyebrow{color:color-mix(in srgb, var(--color-accent) 55%, var(--color-on-dark))}.closing__quote{max-width:22ch;font-family:var(--font-display);letter-spacing:-.025em;color:var(--color-on-dark);margin-top:1.6rem;font-size:clamp(2rem,4.2vw,3.6rem);font-style:italic;font-weight:300;line-height:1.1}.closing__caption{max-width:34rem;color:var(--color-on-dark-muted);margin-top:1.4rem;font-size:.98rem;line-height:1.65}.closing__actions{margin-top:2rem}.site-footer{background-color:var(--color-bg);padding-block:clamp(3.5rem,7vw,5.5rem) 2rem}.site-footer__inner{flex-direction:column;display:flex}.site-footer__mark{font-family:var(--font-display);letter-spacing:-.04em;color:var(--color-ink);border-bottom:1px solid var(--color-line);padding-bottom:2.2rem;font-size:clamp(2.2rem,6.5vw,5.5rem);font-weight:400;line-height:.95}.site-footer__top{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:2rem;padding-block:2.6rem;display:grid}.site-footer__statement{flex-direction:column;align-items:flex-start;gap:.9rem;display:flex}.site-footer__line{max-width:24rem;font-family:var(--font-display);letter-spacing:-.02em;font-size:clamp(1.3rem,2vw,1.7rem);line-height:1.3}.site-footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));justify-self:end;gap:2rem;width:min(100%,26rem);display:grid}.site-footer__title{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--color-ink-muted);font-size:.64rem;font-weight:700}.site-footer__list{flex-direction:column;gap:.55rem;margin-top:.9rem;display:flex}.site-footer__link{color:var(--color-ink-soft);transition:color var(--duration-fast) var(--ease-out);font-size:.92rem}.site-footer__link:hover{color:var(--color-accent)}.site-footer__bottom{border-top:1px solid var(--color-line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding-top:1.6rem;display:flex}.site-footer__note{font-family:var(--font-mono);letter-spacing:.04em;color:var(--color-ink-muted);font-size:.66rem}.site-footer__top-link{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-soft);align-items:center;gap:.4rem;font-size:.66rem;font-weight:700;display:inline-flex}.site-footer__top-link .icon{width:.85rem;height:.85rem;transition:transform var(--duration-base) var(--ease-out)}.site-footer__top-link:hover .icon{transform:translate(2px,-2px)}@media (max-width:1024px){.hero{min-height:0;padding-top:calc(var(--header-height) + 2.5rem)}.hero__inner{grid-template-columns:minmax(0,1fr);gap:2.5rem}.hero__copy,.hero__visual{max-width:42rem}.hero__scroll{display:none}.argument__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.chapters__inner{grid-template-columns:minmax(0,1fr);gap:2.2rem}.chapters__intro{position:static}.chapters__summary{max-width:34rem}}@media (max-width:720px){.hero__title{font-size:clamp(2.6rem,12vw,4rem)}.hero__question{font-size:var(--text-base)}.argument__head{grid-template-columns:minmax(0,1fr);gap:1rem}.argument__grid{grid-template-columns:minmax(0,1fr)}.step-card{min-height:0}.step-card__title{padding-top:1.4rem}.site-footer__top{grid-template-columns:minmax(0,1fr)}.site-footer__nav{justify-self:stretch;width:100%}}@media (max-width:520px){.hero__actions{flex-direction:column;align-items:stretch;width:100%}.hero__actions .button{justify-content:space-between}.hero__visual{border-radius:var(--radius-lg);padding:.65rem}.chapter-row{padding:.9rem 1rem}.chapter-row:hover{padding-left:1.1rem}.chapter-row__number{display:none}.chapter-list{border-radius:var(--radius-lg)}}.site-header{z-index:50;color:var(--color-ink);transition:background-color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), backdrop-filter var(--duration-base) var(--ease-out);position:fixed;top:0;left:0;right:0}.site-header.is-scrolled{background-color:var(--color-surface-glass);-webkit-backdrop-filter:blur(16px)saturate(1.4);backdrop-filter:blur(16px)saturate(1.4);box-shadow:0 1px #12211b12}.site-header__inner{height:var(--header-height);justify-content:space-between;align-items:center;gap:1.5rem;display:flex}.brand{font-family:var(--font-mono);letter-spacing:-.02em;color:var(--color-ink);border-radius:var(--radius-sm);align-items:center;gap:.65rem;font-size:.9rem;font-weight:700;display:inline-flex}.brand__mark{width:1.7rem;height:1.7rem;color:var(--color-moss);transition:transform .9s var(--ease-page)}.brand:hover .brand__mark{transform:rotate(-24deg)}.brand__word{line-height:1}.brand__tld{color:var(--color-ink-muted)}.site-nav{align-items:center;gap:.35rem;margin-left:auto;display:flex}.site-nav__link{color:var(--color-ink-muted);border-radius:var(--radius-pill);transition:color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);padding:.5rem .85rem;font-size:.9rem;font-weight:500}.site-nav__link:hover{color:var(--color-ink);background-color:#12211b0d}.site-nav__link[aria-current=page]{color:var(--color-ink)}.site-header__actions{align-items:center;display:flex}.header-cta{min-height:2.4rem;color:var(--color-on-dark);background-color:var(--color-ink);border-radius:var(--radius-pill);transition:background-color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);align-items:center;gap:.5rem;padding:.2rem .95rem;font-size:.86rem;font-weight:550;display:inline-flex}.header-cta .icon{width:.9rem;height:.9rem;transition:transform var(--duration-base) var(--ease-out)}.header-cta:hover{background-color:var(--color-moss);transform:translateY(-1px)}.header-cta:hover .icon{transform:translate(2px,-2px)}.menu-toggle{width:2.6rem;height:2.6rem;color:var(--color-ink);border:1px solid var(--color-line);background-color:#fffefab3;border-radius:50%;place-items:center;display:none}.menu-toggle__icon{width:1.15rem;height:1.15rem;transition:opacity var(--duration-fast) ease, transform var(--duration-base) var(--ease-out);grid-area:1/1}.menu-toggle__icon--close{opacity:0;transform:rotate(-90deg)scale(.7)}.menu-toggle[aria-expanded=true] .menu-toggle__icon--open{opacity:0;transform:rotate(90deg)scale(.7)}.menu-toggle[aria-expanded=true] .menu-toggle__icon--close{opacity:1;transform:none}.site-menu{background-color:var(--color-surface-glass);border-bottom:1px solid var(--color-line);opacity:0;-webkit-backdrop-filter:blur(18px)saturate(1.4);backdrop-filter:blur(18px)saturate(1.4);transition:opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);display:none;overflow:hidden;transform:translateY(-8px)}.site-menu.is-open{opacity:1;transform:none}.site-menu__inner{gap:.15rem;padding-block:.75rem 1.25rem;display:grid}.site-menu__link{border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:.5rem;padding:.9rem .25rem;font-size:1.05rem;font-weight:500;display:flex}.site-menu__link .icon{width:1rem;height:1rem}.site-menu__link--cta{color:var(--color-on-dark);background-color:var(--color-ink);border-radius:var(--radius-pill);border:0;margin-top:.6rem;padding:.9rem 1.1rem}body.is-locked{overflow:hidden}@media (max-width:920px){.site-nav,.site-header__actions{display:none}.menu-toggle{display:grid}.site-menu{opacity:1;max-height:0;transition:max-height .42s var(--ease-page), opacity var(--duration-base) var(--ease-out);display:block;transform:none}.site-menu.is-open{max-height:26rem}}.button{--btn-bg:var(--color-ink);--btn-fg:var(--color-on-dark);--btn-border:var(--color-ink);--btn-icon-bg:#f4f1e824;min-height:var(--button-height);font-family:var(--font-body);letter-spacing:-.005em;color:var(--btn-fg);white-space:nowrap;cursor:pointer;background-color:var(--btn-bg);border:1px solid var(--btn-border);border-radius:var(--radius-pill);transition:background-color var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);justify-content:space-between;align-items:center;gap:.85rem;padding:.3rem .34rem .3rem 1.3rem;font-size:.94rem;font-weight:550;line-height:1;display:inline-flex;position:relative}.button--lg{min-height:3.4rem;padding-left:1.55rem;font-size:1rem}.button:hover{transform:translateY(-1px);box-shadow:0 18px 34px -24px #12211b8c}.button:active{box-shadow:none;transform:translateY(0)}.button__labels{place-items:center start;display:grid;overflow:hidden}.button__text{transition:opacity .18s ease, transform var(--duration-base) var(--ease-out);grid-area:1/1}.button__text--hover{opacity:0;transform:translateY(70%)}.button:is(:hover,:focus-visible) .button__text{opacity:0;transform:translateY(-70%)}.button:is(:hover,:focus-visible) .button__text--hover{opacity:1;transform:none}.button__icon{background-color:var(--btn-icon-bg);width:2.25rem;height:2.25rem;transition:background-color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);border-radius:50%;flex:none;place-items:center;display:grid}.button--lg .button__icon{width:2.7rem;height:2.7rem}.button__icon .icon{width:1rem;height:1rem;transition:transform var(--duration-base) var(--ease-out)}.button:is(:hover,:focus-visible) .button__icon .icon{transform:translate(2px)}.button:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.button--primary{--btn-bg:var(--color-ink);--btn-fg:var(--color-on-dark);--btn-border:var(--color-ink);--btn-icon-bg:#f4f1e824}.button--primary:hover{--btn-bg:#1b3027;--btn-border:#1b3027;--btn-icon-bg:var(--color-accent)}.button--secondary{--btn-bg:transparent;--btn-fg:var(--color-ink);--btn-border:var(--color-line-strong);--btn-icon-bg:#12211b0f}.button--secondary:hover{--btn-bg:var(--color-surface);--btn-border:var(--color-ink);--btn-icon-bg:#12211b17}.button--ghost{--btn-bg:transparent;--btn-fg:var(--color-ink);--btn-border:transparent;--btn-icon-bg:transparent;padding-left:.2rem}.button--ghost:hover{--btn-border:var(--color-line-strong);--btn-icon-bg:#12211b0d}.button--light{--btn-bg:var(--color-on-dark);--btn-fg:var(--color-ink);--btn-border:var(--color-on-dark);--btn-icon-bg:#12211b17}.button--light:hover{--btn-bg:#fffdf6;--btn-border:#fffdf6;--btn-icon-bg:var(--color-accent);--btn-fg:var(--color-on-dark)}[data-reveal]{--reveal-delay:calc(var(--i,0) * 80ms)}[data-reveal=fade],[data-reveal=""]{opacity:0;transition:opacity .7s var(--ease-out) var(--reveal-delay)}[data-reveal=up],[data-reveal=fade]{transition:opacity .7s var(--ease-out) var(--reveal-delay), transform .9s var(--ease-page) var(--reveal-delay);transform:translateY(22px)}[data-reveal=fade].is-visible,[data-reveal=up].is-visible,[data-reveal=""].is-visible{opacity:1;transform:none}[data-reveal=plate]{opacity:0;transition:opacity .8s var(--ease-out) var(--reveal-delay), transform 1.1s var(--ease-page) var(--reveal-delay);transform:translateY(34px)scale(.985)}[data-reveal=plate].is-visible{opacity:1;transform:none}[data-reveal=scale]{opacity:0;transition:opacity .7s var(--ease-out) var(--reveal-delay), transform 1s var(--ease-page) var(--reveal-delay);transform:scale(.94)}[data-reveal=scale].is-visible{opacity:1;transform:none}[data-reveal=rule]{transform-origin:0;transition:transform 1.1s var(--ease-page) var(--reveal-delay);transform:scaleX(0)}[data-reveal=rule].is-visible{transform:scaleX(1)}[data-reveal=lines] .line,[data-reveal=words] .word{margin-block:-.06em -.24em;padding-block:.06em .24em;overflow:hidden}[data-reveal=lines] .line{display:block}[data-reveal=words] .word{vertical-align:top;display:inline-block}[data-reveal=lines] .line__inner,[data-reveal=words] .word__inner{transition:transform 1.05s var(--ease-page) calc(var(--i,0) * 75ms + .12s);will-change:transform;display:inline-block;transform:translateY(110%)rotate(1.5deg)}[data-reveal=lines].is-visible .line__inner,[data-reveal=words].is-visible .word__inner{transform:none}[data-reveal=stagger]>*{opacity:0;transition:opacity .6s var(--ease-out), transform .8s var(--ease-page);transform:translateY(18px)}[data-reveal=stagger].is-visible>*{opacity:1;transform:none}[data-reveal=stagger].is-visible>:first-child{transition-delay:80ms}[data-reveal=stagger].is-visible>:nth-child(2){transition-delay:.15s}[data-reveal=stagger].is-visible>:nth-child(3){transition-delay:.22s}[data-reveal=stagger].is-visible>:nth-child(4){transition-delay:.29s}[data-reveal=stagger].is-visible>:nth-child(5){transition-delay:.36s}[data-reveal=stagger].is-visible>:nth-child(6){transition-delay:.43s}@keyframes float-plate{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media (prefers-reduced-motion:reduce){[data-reveal]{opacity:1!important;transform:none!important}[data-reveal] .line__inner,[data-reveal] .word__inner{transform:none!important}}.story-hero{padding-top:calc(var(--header-height) + clamp(2.5rem, 7vh, 5.5rem));border-bottom:1px solid var(--color-line);padding-bottom:clamp(2.6rem,6vh,4.5rem);position:relative;overflow:hidden}.story-hero__field{pointer-events:none;background:radial-gradient(55% 70% at 78% 6%,#2f6b5229,#0000 70%),radial-gradient(45% 60% at 4% 100%,#b4512e1a,#0000 72%);position:absolute;inset:0}.story-hero__inner{z-index:1;flex-direction:column;align-items:flex-start;display:flex;position:relative}.story-hero__back{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);transition:color var(--duration-fast) var(--ease-out);align-items:center;gap:.5rem;font-size:.66rem;font-weight:700;display:inline-flex}.story-hero__back .icon{width:.85rem;height:.85rem;transition:transform var(--duration-base) var(--ease-out)}.story-hero__back:hover{color:var(--color-ink)}.story-hero__back:hover .icon{transform:translate(-3px)}.story-hero__eyebrow{margin-top:clamp(2rem,5vh,3.2rem)}.story-hero__title{letter-spacing:-.04em;max-width:15ch;margin-top:1rem;font-size:clamp(3rem,6.6vw,6rem);line-height:.94}.story-hero__lead{max-width:40rem;color:var(--color-ink-muted);margin-top:1.5rem;font-size:clamp(1.08rem,1rem + .5vw,1.35rem);line-height:1.6}.story-hero__meta{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);flex-wrap:wrap;gap:.4rem 1.2rem;margin-top:1.8rem;font-size:.67rem;font-weight:700;display:flex}.story-hero__meta li+li:before{content:"/";color:var(--color-line-strong);margin-right:1.2rem}.story-hero__actions{margin-top:1.9rem}.story-hero__tags{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--color-ink-muted);margin-top:1.6rem;font-size:.64rem;font-weight:700}.story-body{padding-block:clamp(2.5rem, 6vw, 4rem) var(--section-space);grid-template-columns:12rem minmax(0,1fr);align-items:start;gap:clamp(1.5rem,3vw,2.5rem);display:grid}.story-chapters{min-width:0}.story-rail{top:calc(var(--header-height) + 2rem);align-self:start;padding-top:.4rem;position:sticky}.story-rail__label{font-family:var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--color-ink-muted);margin-bottom:.9rem;font-size:.64rem;font-weight:700}.story-rail__nav{border-left:1px solid var(--color-line);flex-direction:column;display:flex}.story-rail__link{color:var(--color-ink-muted);transition:color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out), padding-left var(--duration-base) var(--ease-out);border-left:2px solid #0000;grid-template-columns:1.9rem minmax(0,1fr);gap:.35rem;margin-left:-1px;padding:.42rem 0 .42rem .85rem;font-size:.82rem;line-height:1.35;display:grid}.story-rail__link:hover{color:var(--color-ink);padding-left:1rem}.story-rail__link.is-active{color:var(--color-ink);border-left-color:var(--color-accent)}.story-rail__number{font-family:var(--font-mono);letter-spacing:.06em;color:var(--color-accent);opacity:.8;font-size:.62rem;font-weight:700}.story-rail__title{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.chapter{border-top:1px solid var(--color-line);scroll-margin-top:calc(var(--header-height) + 1.5rem);padding-block:clamp(3rem,7vw,5.5rem)}.chapter:first-child{border-top:0;padding-top:0}.chapter__head{grid-template-columns:4.5rem minmax(0,1fr);gap:clamp(1rem,2.5vw,2rem);margin-bottom:clamp(1.6rem,3.5vw,2.6rem);display:grid}.chapter__marker{flex-direction:column;align-items:flex-start;gap:.8rem;padding-top:.2rem;display:flex}.chapter__number{min-width:2.6rem;font-family:var(--font-mono);letter-spacing:.08em;color:var(--color-accent);border:1px solid var(--color-line);border-radius:var(--radius-pill);font-variant-numeric:tabular-nums;justify-content:center;align-items:center;padding:.2rem .55rem;font-size:.7rem;font-weight:700;display:inline-flex}.chapter__marker-line{background:linear-gradient(to bottom, var(--color-line), transparent);flex:1;width:1px;min-height:2.5rem}.chapter__headings{max-width:46rem;padding-top:.2rem}.chapter__title{font-family:var(--font-display);letter-spacing:-.03em;text-wrap:balance;margin-top:.6rem;font-size:clamp(1.9rem,1.3rem + 2.2vw,3.1rem);font-weight:400;line-height:1.03}.chapter__body{grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);grid-template-areas:"copy model";align-items:start;gap:clamp(1.6rem,4vw,3.5rem);padding-left:calc(4.5rem + clamp(1rem,2.5vw,2rem));display:grid}.chapter__copy{grid-area:copy;max-width:36rem}.chapter__model{grid-area:model;min-width:0}.chapter[data-layout=split-reverse] .chapter__body{grid-template-areas:"model copy"}.chapter[data-layout=plate] .chapter__body,.chapter[data-layout=margin] .chapter__body,.chapter[data-layout=feature] .chapter__body{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy""model";gap:clamp(1.8rem,4vw,3rem)}.chapter[data-layout=plate] .chapter__copy,.chapter[data-layout=margin] .chapter__copy,.chapter[data-layout=feature] .chapter__copy{max-width:var(--measure-wide)}.chapter[data-layout=margin] .chapter__copy{max-width:38rem;margin-left:clamp(0rem,6vw,6rem)}.chapter[data-layout=feature] .chapter__copy{max-width:46rem}.chapter[data-layout=feature] .chapter__title{font-size:clamp(2.3rem,1.5rem + 3vw,4rem)}.chapter[data-layout=essay] .chapter__body{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy";padding-left:calc(4.5rem + clamp(1rem,2.5vw,2rem))}.chapter[data-layout=essay] .chapter__copy{max-width:38rem;margin-left:auto;margin-right:auto}.chapter__text{font-size:var(--text-md);color:var(--color-ink-soft);margin-top:1.05em;line-height:1.72}.chapter__text:first-child{margin-top:0}.chapter__text--lead{color:var(--color-ink);font-size:clamp(1.15rem,1.05rem + .45vw,1.35rem);line-height:1.62}.pullquote{font-family:var(--font-display);letter-spacing:-.02em;color:var(--color-ink);border-left:2px solid var(--color-accent);text-wrap:pretty;margin-top:1.9rem;padding-left:1.2rem;font-size:clamp(1.4rem,1.1rem + 1.1vw,1.95rem);font-style:italic;font-weight:350;line-height:1.28}.chapter-steps{border-top:1px solid var(--color-line);margin-top:2rem;padding-top:1.5rem}.chapter-steps__label{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--color-moss);margin-bottom:.6rem;font-size:.65rem;font-weight:700}.chapter-steps__item{border-bottom:1px solid var(--color-line);grid-template-columns:2rem minmax(0,1fr);gap:.9rem;padding-block:.8rem;display:grid}.chapter-steps__item:last-child{border-bottom:0;padding-bottom:0}.chapter-steps__index{font-family:var(--font-mono);letter-spacing:.06em;color:var(--color-moss);padding-top:.15rem;font-size:.65rem;font-weight:700}.chapter-steps__text{color:var(--color-ink-soft);font-size:.95rem;line-height:1.55}.term-list{background-color:var(--color-line);border:1px solid var(--color-line);border-radius:var(--radius-md);gap:1px;margin-top:2rem;display:grid;overflow:hidden}.term{background-color:var(--color-surface);padding:1rem 1.2rem}.term__term{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--color-moss);font-size:.64rem;font-weight:700}.term__description{color:var(--color-ink-muted);margin-top:.35rem;font-size:.92rem;line-height:1.6}.chapter[data-layout=finding]{color:var(--color-on-dark);background-color:var(--color-dark);border-radius:var(--radius-xl);border-top:0;margin-block:clamp(2rem,5vw,3.5rem);padding:clamp(2rem,6vw,4.5rem)}.chapter[data-layout=finding] .chapter__head{margin-bottom:1.8rem}.chapter[data-layout=finding] .chapter__number{color:var(--color-on-dark);border-color:#f4f1e838}.chapter[data-layout=finding] .chapter__marker-line{background:linear-gradient(#f4f1e833,#0000)}.chapter[data-layout=finding] .eyebrow{color:color-mix(in srgb, var(--color-accent) 60%, var(--color-on-dark))}.chapter[data-layout=finding] .chapter__title{color:var(--color-on-dark)}.chapter[data-layout=finding] .chapter__body{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy";padding-left:calc(4.5rem + clamp(1rem,2.5vw,2rem))}.chapter[data-layout=finding] .chapter__copy{max-width:44rem}.chapter[data-layout=finding] .chapter__text{color:var(--color-on-dark-muted)}.chapter[data-layout=finding] .chapter__text--lead{color:var(--color-on-dark)}.chapter[data-layout=finding] .pullquote{color:var(--color-on-dark);border-left-color:var(--color-accent)}.chapter[data-layout=finding] .chapter-steps{border-top-color:#f4f1e829}.chapter[data-layout=finding] .chapter-steps__label{color:color-mix(in srgb, var(--color-accent) 60%, var(--color-on-dark))}.chapter[data-layout=finding] .chapter-steps__item{border-bottom-color:#f4f1e81f}.chapter[data-layout=finding] .chapter-steps__text{color:var(--color-on-dark)}.chapter[data-layout=finding] .term{background-color:var(--color-dark-soft)}.chapter[data-layout=finding] .term__term{color:color-mix(in srgb, var(--color-accent) 60%, var(--color-on-dark))}.chapter[data-layout=finding] .term__description{color:var(--color-on-dark-muted)}.story-end{border-top:1px solid var(--color-line);padding-block:clamp(3.5rem,8vw,6rem)}.story-end__inner{text-align:center;flex-direction:column;align-items:center;display:flex}.story-end__title{font-family:var(--font-display);letter-spacing:-.03em;margin-top:1rem;font-size:clamp(2rem,1.4rem + 2.4vw,3.2rem);font-weight:400;line-height:1.05}.story-end__actions{flex-wrap:wrap;justify-content:center;gap:.7rem;margin-top:1.8rem;display:flex}@media (max-width:1100px){.story-body{grid-template-columns:minmax(0,1fr)}.story-rail{display:none}}@media (max-width:860px){.chapter__head{grid-template-columns:minmax(0,1fr);gap:.8rem}.chapter__marker{flex-direction:row;align-items:center}.chapter__marker-line{background:linear-gradient(to right, var(--color-line), transparent);flex:1;width:auto;height:1px;min-height:0}.chapter__body,.chapter[data-layout=split-reverse] .chapter__body{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy""model";padding-left:0}.chapter[data-layout=margin] .chapter__copy,.chapter[data-layout=essay] .chapter__copy{margin-left:0}.chapter[data-layout=essay] .chapter__body,.chapter[data-layout=finding] .chapter__body{padding-left:0}.chapter[data-layout=finding]{border-radius:var(--radius-lg);padding:1.6rem}.chapter__model{position:static}}@media (max-width:520px){.story-hero__meta{gap:.35rem .8rem}.story-hero__meta li+li:before{margin-right:.8rem}.story-end__actions{flex-direction:column;width:100%}.story-end__actions .button{width:100%}}.chapter__title:first-letter,.pullquote:first-letter,.step-card__title:first-letter,.chapter-row__title:first-letter,.chapter-steps__text:first-letter,.term__term:first-letter{text-transform:uppercase}.chapter[data-layout=finding] .chapter-steps__index{color:color-mix(in srgb, var(--color-accent) 40%, var(--color-on-dark))}.model{--model-accent:var(--color-accent);--model-accent-wash:color-mix(in srgb, var(--model-accent) 9%, var(--color-bg));--model-accent-line:color-mix(in srgb, var(--model-accent) 32%, transparent);--model-accent-text:var(--color-accent);background-color:var(--color-surface-soft);border:1px solid color-mix(in srgb, var(--color-line) 55%, var(--color-brown-soft));border-top:3px solid var(--model-accent);min-width:0;transition:border-color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);flex-direction:column;gap:.85rem;padding:clamp(.9rem,1.6vw,1.25rem);display:flex;position:relative}.model:after{content:"";background-color:var(--model-accent);width:.65rem;height:.65rem;position:absolute;top:-1px;left:-1px}@media (hover:hover){.model:hover{border-color:var(--model-accent-line);border-top-color:var(--model-accent);box-shadow:5px 5px 0 var(--model-accent-line)}}.model[data-kind=hook],.model[data-kind=map]{--model-accent:#a94a27;--model-accent-text:#a94a27}.model[data-kind=cost],.model[data-kind=budget]{--model-accent:#a9702b;--model-accent-text:#8a5a18}.model[data-kind=sea],.model[data-kind=wind],.model[data-kind=ocean]{--model-accent:#1f6b73;--model-accent-text:#1f6b73}.model[data-kind=convection]{--model-accent:#8a4a6e;--model-accent-text:#8a4a6e}.model[data-kind=gas],.model[data-kind=albedo]{--model-accent:#3f7f86;--model-accent-text:#356b6e}.model[data-kind=flow],.model[data-kind=feedback]{--model-accent:#2f6b52;--model-accent-text:#2f6b52}.model[data-kind=greenhouse]{--model-accent:#a94a27;--model-accent-text:#a94a27}.model__header{border-bottom:var(--rule-hair);justify-content:space-between;align-items:center;gap:.75rem;padding-bottom:.6rem;display:flex}.model__label{letter-spacing:.2em;text-transform:uppercase;min-width:0;color:var(--color-ink);align-items:center;gap:.45rem;margin:0;font-size:.7rem;font-weight:600;display:inline-flex}.model__label:before{width:var(--marker);height:var(--marker);content:"";background:var(--model-accent);flex:none}.model__tag{letter-spacing:.06em;text-transform:uppercase;color:var(--model-accent-text);white-space:nowrap;background:var(--model-accent-wash);border-left-width:2px;border:1px solid var(--model-accent-line);flex:none;align-items:center;gap:.35rem;padding:.18rem .5rem;font-size:.66rem;font-weight:600;display:inline-flex}.model__tag:before{content:"";background-color:currentColor;width:5px;height:5px}.model__body{flex-direction:column;gap:.75rem;min-width:0;display:flex}.model__note{color:var(--color-ink-muted);text-wrap:pretty;border-left:2px solid var(--model-accent-line);margin:0;padding-left:.7rem;font-size:.75rem;line-height:1.55}.model__stats{background-color:color-mix(in srgb, var(--color-line) 82%, transparent);border:1px solid color-mix(in srgb, var(--color-line) 82%, transparent);grid-template-columns:repeat(auto-fit,minmax(4.5rem,1fr));gap:1px;display:grid}.model__stat-value{letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-size:1rem;font-weight:700;display:block}.model__stat-label{letter-spacing:.12em;text-transform:uppercase;color:var(--color-ink-muted);margin-top:.2rem;font-size:.68rem;line-height:1.35;display:block}.model__control{flex-direction:column;gap:.05rem;min-width:0;display:flex}.model__control-head{justify-content:space-between;align-items:baseline;gap:.5rem;display:flex}.model__control-label{color:var(--color-ink);font-size:.75rem;font-weight:600;line-height:1.3}.model__control-value{color:var(--model-accent-text);white-space:nowrap;font-variant-numeric:tabular-nums;font-size:.72rem;font-weight:600}.model__range{appearance:none;cursor:pointer;background:0 0;width:100%;height:1.75rem;margin:0;display:block}.model__range::-webkit-slider-runnable-track{background:linear-gradient(to right, var(--model-accent) var(--fill,50%), color-mix(in srgb, var(--color-line) 70%, var(--color-bg)) var(--fill,50%));height:4px}.model__range::-webkit-slider-thumb{background:var(--color-bg);border:2px solid var(--model-accent);appearance:none;width:11px;height:16px;transition:background-color var(--duration-fast) var(--ease-out);margin-top:-6px}.model__range:hover::-webkit-slider-thumb{background:var(--model-accent)}.model__range:active::-webkit-slider-thumb{background:var(--model-accent)}.model__range::-moz-range-track{background:color-mix(in srgb, var(--color-line) 70%, var(--color-bg));height:4px}.model__range::-moz-range-progress{background:var(--model-accent);height:4px}.model__range::-moz-range-thumb{background:var(--color-bg);border:2px solid var(--model-accent);width:11px;height:16px}.model__range:hover::-moz-range-thumb{background:var(--model-accent)}.model__range:active::-moz-range-thumb{background:var(--model-accent)}.model__range:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.model__scale{color:var(--color-ink-muted);font-variant-numeric:tabular-nums;justify-content:space-between;margin-top:-.35rem;font-size:.68rem;display:flex}.model__scale-end--last{text-align:right}.model__buttons{gap:.5rem;display:flex}.model__button{font:inherit;letter-spacing:.02em;color:var(--color-ink);background-color:var(--color-bg);border:1px solid var(--color-line);cursor:pointer;transition:background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);flex:1;padding:.55rem .7rem;font-size:.68rem;font-weight:600}.model__button:hover{border-color:var(--model-accent-line);background:var(--model-accent-wash)}.model__button:active{transform:translateY(1px)}.model__button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.model__button--primary{color:var(--color-on-dark);background:var(--color-ink);border-color:var(--color-ink)}.model__button--primary:hover{color:var(--color-on-dark);background:var(--color-brown-hover);border-color:var(--color-brown-hover)}.model__toggle{width:100%;font:inherit;color:var(--color-ink);text-align:left;background-color:var(--color-bg);border:1px solid var(--color-line);cursor:pointer;transition:background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);justify-content:space-between;align-items:center;gap:.75rem;padding:.5rem .65rem;font-size:.66rem;font-weight:600;display:flex}.model__toggle:hover{border-color:var(--model-accent-line)}.model__toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.model__toggle-state{letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);background-color:color-mix(in srgb, var(--color-line) 32%, var(--color-bg));border:1px solid color-mix(in srgb, var(--color-line) 80%, transparent);transition:color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);flex:none;align-items:center;gap:.4rem;padding:.2rem .45rem;font-size:.54rem;font-weight:600;display:inline-flex}.model__toggle-state:before{content:"";background-color:#3c383638;background-image:linear-gradient(var(--color-bg), var(--color-bg));width:1.15rem;height:.7rem;transition:background-color var(--duration-base) var(--ease-out), background-position var(--duration-base) var(--ease-out);background-position:2px 2px;background-repeat:no-repeat;background-size:.4rem .4rem}.model__toggle[aria-pressed=true] .model__toggle-state{color:var(--model-accent-text);background:var(--model-accent-wash);border-color:var(--model-accent-line)}.model__toggle[aria-pressed=true] .model__toggle-state:before{background-color:var(--model-accent);background-position:right 2px top 2px}.model__canvas,.gas__canvas,.model__scene,.model__chart,.flow__svg{background-color:color-mix(in srgb, var(--color-bg) 70%, transparent);border:1px solid color-mix(in srgb, var(--color-line) 78%, transparent);width:100%;height:auto;overflow:hidden}.model__canvas,.gas__canvas{height:clamp(116px,17vh,168px);display:block}.model__canvas{cursor:default}.gas__canvas{cursor:ew-resize;touch-action:none}.model__scene,.model__chart{display:block}.model__caption{color:var(--color-ink-muted);text-wrap:pretty;border-left:2px solid var(--model-accent-line);margin:0;padding-left:.7rem;font-size:.75rem;line-height:1.55}.model__bars{flex-direction:column;gap:.6rem;margin:0;padding:0;list-style:none;display:flex}.model__bar{min-width:0}.model__bar-head{color:var(--color-ink-muted);justify-content:space-between;gap:1rem;font-size:.72rem;display:flex}.model__bar-head strong{color:var(--color-ink);font-variant-numeric:tabular-nums;font-weight:600}.model__track{background:color-mix(in srgb, var(--color-line) 45%, var(--color-bg));height:5px;margin-top:.3rem;overflow:hidden}.model__fill{background-color:var(--model-accent);width:0;height:100%;transition:width .28s var(--ease-out);display:block}.cost__summary{border-bottom:1px dashed color-mix(in srgb, var(--color-line) 90%, transparent);align-items:baseline;gap:.5rem;padding-bottom:.6rem;display:flex}.cost__amount{letter-spacing:-.04em;font-variant-numeric:tabular-nums;font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:700;line-height:1}.cost__unit{letter-spacing:.14em;text-transform:uppercase;color:var(--color-ink-muted);font-size:.66rem;font-weight:600}.cost__delta{color:var(--model-accent-text);margin:0;font-size:.72rem;font-weight:600}.budget__gauge{flex-direction:column;gap:.3rem;display:flex}.budget__meter{background:color-mix(in srgb, var(--color-line) 35%, var(--color-bg));border:1px solid color-mix(in srgb, var(--color-line) 90%, transparent);height:14px;padding:0;position:relative;overflow:hidden}.budget__meter:after{content:"";pointer-events:none;background-image:repeating-linear-gradient(90deg,#3c383629 0 1px,#0000 1px 10%);position:absolute;inset:0}.budget__fill{background-color:var(--model-accent);width:100%;height:100%;transition:width .12s linear;display:block}.budget__scale{color:var(--color-ink-muted);font-variant-numeric:tabular-nums;justify-content:space-between;font-size:.68rem;display:flex}.budget__flow{min-height:2em;color:var(--color-ink-muted);font-variant-numeric:tabular-nums;text-wrap:pretty;margin:0;font-size:.64rem;line-height:1.45}.gas__hint{color:var(--color-ink-muted);text-wrap:pretty;border-left:2px solid var(--model-accent-line);margin:0;padding-left:.7rem;font-size:.75rem;line-height:1.55}.feedback__flow{min-height:2em;color:var(--color-ink-muted);font-variant-numeric:tabular-nums;text-wrap:pretty;margin:0;font-size:.64rem;line-height:1.45}.feedback__controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem .9rem;display:grid}@media (max-width:600px){.feedback__controls{grid-template-columns:minmax(0,1fr)}}.hook__chart{border-bottom:1px solid var(--color-line);align-items:flex-end;gap:2px;height:clamp(68px,10vh,96px);display:flex}.hook__bar{background-color:color-mix(in srgb, var(--color-brown-soft) 35%, var(--color-bg));border-top:1px solid color-mix(in srgb, var(--color-ink) 25%, transparent);min-width:0;transition:background-color var(--duration-base) var(--ease-out);flex:1}.hook__bar.is-selected{background-color:var(--model-accent)}.hook__scale{color:var(--color-ink-muted);font-variant-numeric:tabular-nums;justify-content:space-between;font-size:.68rem;display:flex}.hook__consequence{min-height:3.2em;color:var(--color-ink-muted);text-wrap:pretty;margin:0;font-size:.75rem;line-height:1.45}.map__grid{grid-template-columns:repeat(13,minmax(0,1fr));gap:2px;display:grid}.map__tile{aspect-ratio:1;min-width:0;font:inherit;color:var(--color-ink);background-color:var(--color-surface-soft);border:1px solid color-mix(in srgb, var(--color-line) 65%, transparent);cursor:pointer;transition:background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);place-items:center;padding:0;font-size:clamp(.5rem,.8vw,.62rem);font-weight:700;display:grid}.map__tile:hover{outline:1px solid var(--color-ink);outline-offset:-1px}.map__tile[aria-pressed=true]{z-index:1;border-color:var(--color-ink);outline:2px solid var(--color-ink);outline-offset:1px;position:relative}.map__tile:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.map__types{flex-wrap:wrap;gap:.28rem;display:flex}.map__type{font:inherit;color:var(--color-ink-muted);background-color:var(--color-bg);border:1px solid var(--color-line);cursor:pointer;transition:color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);padding:.28rem .55rem;font-size:.68rem;font-weight:600}.map__type:hover{background:var(--model-accent-wash);border-color:var(--model-accent-line)}.map__type[aria-pressed=true]{color:var(--color-on-dark);background:var(--color-ink);border-color:var(--color-ink)}.map__type:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.map__legend{letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-muted);align-items:center;gap:.4rem;font-size:.62rem;display:flex}.map__legend-bar{border:1px solid var(--color-line);background:linear-gradient(90deg,#f2e5bc,#a94a27);flex:1;height:6px}.map__detail{background-color:var(--color-bg);border:1px solid color-mix(in srgb, var(--color-line) 82%, transparent);border-left:3px solid var(--model-accent);padding:.7rem .8rem}.map__detail-name{letter-spacing:.12em;text-transform:uppercase;color:var(--model-accent-text);margin:0 0 .2rem;font-size:.68rem;font-weight:600}.map__detail-head{align-items:baseline;gap:.75rem;display:flex}.map__detail-cost{letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-size:1.2rem;font-weight:700}.map__detail-lives{color:var(--color-ink-muted);font-size:.68rem;font-weight:600}.map__detail-human,.map__detail-example{color:var(--color-ink-muted);text-wrap:pretty;margin:.25rem 0 0;font-size:.75rem;line-height:1.45}.map__detail-example{font-style:italic}.convection__canvas{height:clamp(128px,18vh,176px)}.convection__quiz{border-top:1px solid var(--color-line);flex-direction:column;gap:.5rem;padding-top:.7rem;display:flex}.convection__question{margin:0;font-size:.78rem;font-weight:600;line-height:1.35}.convection__options{gap:.3rem;display:grid}.convection__option{font:inherit;color:var(--color-ink);text-align:left;background-color:var(--color-bg);border:1px solid var(--color-line);cursor:pointer;transition:background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);border-left:3px solid #0000;padding:.5rem .65rem;font-size:.64rem;line-height:1.5}.convection__option:hover{background:var(--model-accent-wash);border-color:var(--model-accent-line)}.convection__option:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.convection__option.is-correct{background:#427b581a;border-color:#427b588c #427b588c #427b588c #2f6b52}.convection__option.is-wrong{background:#9d000612;border-color:#9d000666 #9d000666 #9d000666 #9d0006}.convection__feedback{min-height:2.5em;color:var(--color-ink-muted);text-wrap:pretty;margin:0;font-size:.75rem;line-height:1.45}.flow__svg{display:block}.flow__arrow{stroke-dasharray:5 4;transition:stroke-width .18s var(--ease-out);animation:1.15s linear infinite paused flow-dash}.model:hover .flow__arrow,.model:focus-within .flow__arrow{animation-play-state:running}@keyframes flow-dash{to{stroke-dashoffset:-18px}}.flow__legend{color:var(--color-ink-muted);flex-wrap:wrap;gap:.25rem .6rem;font-size:.64rem;line-height:1.4;display:flex}.flow__key{align-items:center;gap:.3rem;display:inline-flex}.flow__key:before{content:"";background:var(--color-brown-soft);flex:none;width:.75rem;height:2px}.flow__key--human:before{background:var(--color-accent);height:3px}.flow__net{align-items:baseline;gap:.5rem;margin:0;display:flex}.flow__net-value{letter-spacing:-.03em;color:var(--color-accent);font-variant-numeric:tabular-nums;font-size:1.45rem;font-weight:700}.flow__net-value.is-negative{color:#2f6b52}.flow__net-label{letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);font-size:.64rem}.flow__projection{min-height:2.9em;color:var(--color-ink-muted);text-wrap:pretty;margin:0;font-size:.75rem;line-height:1.45}.flow__toggles{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;display:grid}@media (max-width:600px){.flow__toggles{grid-template-columns:minmax(0,1fr)}.map__tile{font-size:.52rem}}.sea__scene{height:clamp(110px,14vh,160px)}.greenhouse__scene,.albedo__scene,.ocean__scene{height:clamp(120px,16vh,168px)}.flow__svg{height:clamp(180px,24vh,240px)}@media (max-height:820px) and (min-width:781px){.model{gap:.6rem;padding:.9rem}.model__header{padding-bottom:.45rem}.model__body{gap:.55rem}.model__note{font-size:.64rem}.model__canvas,.gas__canvas,.convection__canvas{height:clamp(100px,14vh,140px)}}@media (max-width:780px){.model{gap:.6rem;padding:.9rem}.model__header{padding-bottom:.45rem}.model__body{gap:.6rem}.model__note,.model__caption,.gas__hint{font-size:.78rem}.model__canvas,.gas__canvas{height:96px}.convection__canvas{height:92px}.sea__scene{height:100px}.flow__svg{height:190px}.convection__option{padding:.5rem .6rem;font-size:.7rem}.convection__question{font-size:.74rem}.map__detail-human,.map__detail-example{font-size:.75rem}.hook__chart{height:44px}.hook__consequence{min-height:0;font-size:.7rem}}@media (prefers-reduced-motion:reduce){.flow__arrow{animation:none}.model,.model__fill,.budget__fill,.model__toggle-state:before,.model__button,.hook__bar,.map__tile,.map__type,.convection__option{transition:none}.model__range::-webkit-slider-thumb{transition:none}}.model{background-color:var(--color-surface);border:1px solid var(--color-line);border-top:1px solid var(--color-line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);gap:.9rem;padding:clamp(1rem,1.5vw,1.3rem)}.model:after{display:none}@media (hover:hover){.model:hover{border-color:var(--color-line-strong);border-top-color:var(--color-line-strong);box-shadow:var(--shadow-md)}}.model:focus-within{border-color:var(--color-line-strong);border-top-color:var(--model-accent)}.model__header{border-bottom:1px solid var(--color-line);padding-bottom:.75rem}.model__label{font-family:var(--font-mono);letter-spacing:.13em;font-size:.63rem;font-weight:700}.model__label:before{border-radius:50%;width:.4rem;height:.4rem}.model__tag{font-family:var(--font-mono);letter-spacing:.08em;border:1px solid var(--model-accent-line);border-radius:var(--radius-pill);padding:.28rem .6rem;font-size:.57rem;font-weight:700}.model__tag:before{border-radius:50%;width:4px;height:4px}.model__body{gap:.8rem}.model__note{border-left-color:var(--model-accent-line);font-size:.78rem}.model__stats{background-color:var(--color-line);border-color:var(--color-line);border-radius:var(--radius-sm);overflow:hidden}.model__stat{background-color:var(--color-surface-soft);padding:.65rem .75rem}.model__stat-value{letter-spacing:-.025em;font-size:1.05rem;font-weight:600}.model__stat-value--accent{color:var(--model-accent-text)}.model__stat-label{font-family:var(--font-mono);letter-spacing:.09em;font-size:.55rem;font-weight:700}.model__control-label{font-size:.78rem;font-weight:500}.model__control-value{font-family:var(--font-mono);font-size:.7rem;font-weight:700}.model__range::-webkit-slider-runnable-track{border-radius:var(--radius-pill);height:5px}.model__range::-webkit-slider-thumb{background:var(--color-surface);border:2px solid var(--model-accent);border-radius:50%;width:15px;height:15px;margin-top:-5px;box-shadow:0 1px 3px #12211b2e}.model__range::-moz-range-track{border-radius:var(--radius-pill);height:5px}.model__range::-moz-range-progress{border-radius:var(--radius-pill);height:5px}.model__range::-moz-range-thumb{background:var(--color-surface);border:2px solid var(--model-accent);border-radius:50%;width:15px;height:15px}.model__button{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;background-color:var(--color-surface-soft);border-color:var(--color-line);border-radius:var(--radius-pill);padding:.6rem .85rem;font-size:.6rem;font-weight:700}.model__toggle{background-color:var(--color-surface-soft);border-color:var(--color-line);border-radius:var(--radius-sm);padding:.6rem .75rem;font-size:.7rem;font-weight:500}.model__toggle-state{font-family:var(--font-mono);border-radius:var(--radius-pill);padding:.22rem .5rem;font-size:.52rem;font-weight:700}.model__toggle-state:before{border-radius:var(--radius-pill);background-color:#12211b2e;background-position:2px 2px;background-size:.44rem .44rem;width:1.25rem;height:.72rem}.model__canvas,.gas__canvas,.model__scene,.model__chart,.flow__svg{background-color:var(--color-surface-soft);border:1px solid var(--color-line);border-radius:var(--radius-md)}.model__track{border-radius:var(--radius-pill);height:6px}.model__fill{border-radius:var(--radius-pill)}.budget__meter{border-radius:var(--radius-pill);height:16px}.budget__fill{border-radius:var(--radius-pill)}.hook__chart{border-bottom-color:var(--color-line);gap:3px}.hook__bar{border-radius:3px 3px 0 0}.map__tile{border-radius:4px}.map__type{font-family:var(--font-mono);text-transform:uppercase;border-radius:var(--radius-pill);padding:.3rem .65rem;font-size:.6rem;font-weight:700}.map__detail{border-radius:var(--radius-sm)}.map__legend-bar{border-radius:var(--radius-pill);height:8px}.convection__option{border-radius:var(--radius-sm);padding:.55rem .7rem;font-size:.68rem}.cost__amount{font-family:var(--font-display);letter-spacing:-.03em;font-weight:400}.model__caption,.gas__hint{border-left-color:var(--model-accent-line)}@media (max-width:600px){.model{border-radius:var(--radius-md);padding:.9rem}}.model__button--primary{color:var(--color-on-dark);background-color:var(--color-ink);border-color:var(--color-ink)}.model__button--primary:hover{color:var(--color-on-dark);background-color:var(--color-ink-soft);border-color:var(--color-ink-soft)}.chapter-steps__index{color:var(--color-moss)}