@font-face{font-family:Manrope;src:url('assets/fonts/ManropeV5-Light.woff2') format('woff2');font-weight:300;font-style:normal;font-display:swap}
@font-face{font-family:Manrope;src:url('assets/fonts/ManropeV5-Regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Manrope;src:url('assets/fonts/ManropeV5-Medium.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:Manrope;src:url('assets/fonts/ManropeV5-SemiBold.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('assets/fonts/IBMPlexMono-Regular.ttf') format('truetype');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('assets/fonts/IBMPlexMono-Medium.ttf') format('truetype');font-weight:500;font-style:normal;font-display:swap}
:root{--font-sans:Manrope,Arial,sans-serif;--font-mono:'IBM Plex Mono',monospace;--charcoal:#2a3842;--petrol:#284456;--white:#f3f4f2;--muted:#d0d7dc;--ink:var(--white)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--charcoal);color:var(--ink);font-family:var(--font-sans);font-weight:400}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid currentColor;outline-offset:5px}h1:focus,h2:focus{outline:none}button,summary{cursor:pointer}p{font-size:1rem;line-height:1.65;margin:0 0 1.2rem;max-width:42ch}h1,h2,h3{font-weight:300;letter-spacing:.02em;margin:0;line-height:1.2}h1{font-size:clamp(3rem,4.5vw,5rem)}h2{font-size:clamp(2.6rem,3.8vw,4.3rem)}h3{font-size:1.7rem}.eyebrow{font-size:.8125rem;letter-spacing:.13em;font-weight:600;margin-bottom:1.2rem;max-width:none}.lead{font-size:clamp(1.1rem,1.5vw,1.4rem);line-height:1.55;letter-spacing:0}.small{font-size:.8125rem;opacity:.85}
.masthead{position:fixed;z-index:20;top:0;left:0;width:100%;padding:30px 4.3vw;display:flex;justify-content:space-between;align-items:center;color:var(--ink);transition:color .2s;pointer-events:none}.masthead a{pointer-events:auto}.wordmark{font-weight:500;font-size:1.0625rem;letter-spacing:.22em;display:flex;align-items:center;gap:20px}.brand-symbol{display:grid;width:32px;height:33px}.brand-symbol img{grid-area:1/1}.mark-petrol{opacity:0}body[data-active=why] .mark-petrol,body[data-active=fit] .mark-petrol,body[data-active=development] .mark-petrol{opacity:1}body[data-active=why] .mark-white,body[data-active=fit] .mark-white,body[data-active=development] .mark-white{opacity:0}.header-cta{font-size:.8125rem}.header-cta span{margin-left:1.3rem}
.rail{position:fixed;z-index:20;right:2.5vw;top:50%;transform:translateY(-50%);display:grid;gap:3px;color:var(--ink)}.rail a{display:flex;gap:9px;align-items:center;min-height:36px;font-size:.75rem;opacity:.72;transition:opacity .3s}.rail a span{font-size:.8125rem}.rail a[aria-current=true],.rail a:hover{opacity:1}.rail a:before{content:'';width:6px;height:6px;border:1px solid currentColor;border-radius:50%;opacity:.55}.rail a[aria-current=true]:before{background:currentColor;opacity:1;box-shadow:0 0 0 4px #ffffff22}
.chapter{position:relative;min-height:100svh;padding:130px 19vw 105px 7.5vw;display:flex;align-items:center;isolation:isolate;overflow:clip;--ink:var(--white);color:var(--ink)}.light{background:var(--white);--ink:var(--charcoal)}.content{width:100%;max-width:1200px}.chapter-foot{position:absolute;bottom:32px;left:7.5vw;right:19vw;display:flex;align-items:center;gap:30px;justify-content:space-between;font-size:.6875rem;letter-spacing:.12em;line-height:1.6}.chapter-foot>span:last-child{text-align:right;max-width:26ch}.scene{position:absolute;inset:0;margin:0;z-index:-2;overflow:hidden}.scene img{width:100%;height:100%;object-fit:cover;display:block}.scene:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,21,29,.9),rgba(15,26,35,.52) 47%,rgba(15,26,35,.15) 75%,rgba(15,26,35,.7))}.hero-image img{object-position:center center}.hero-image:after{background:linear-gradient(90deg,rgba(10,21,29,.55),rgba(10,21,29,.1) 65%,rgba(10,21,29,.6)),linear-gradient(0deg,rgba(10,21,29,.55),transparent 60%)}.hero-content{position:relative;z-index:1}.hero-subtitle{font-size:clamp(1.25rem,2vw,1.9rem);margin:1rem 0 1.4rem;max-width:40ch;line-height:1.4}.intro{margin-bottom:1.8rem;font-size:1.0625rem}.text-link{display:inline-flex;align-items:center;justify-content:space-between;gap:35px;font-size:.875rem;padding:12px 0;border-bottom:1px solid currentColor}.button-link{border:1px solid #ffffffc0;padding:14px 18px;transition:background .2s}.button-link:hover{background:#ffffff16}
.why .content{display:grid;grid-template-columns:1.05fr 1fr;gap:0 9%}.why .eyebrow{grid-column:1/-1}.why h2{font-size:clamp(3rem,4.6vw,5.4rem)}.why-copy{align-self:end;max-width:390px;border-top:1px solid #84939d;padding-top:24px}.why-copy p:first-child{font-size:1.3rem}.editorial-copy{max-width:470px;width:53%}.editorial h2{margin-bottom:1.5rem}.editorial p{max-width:38ch}.editorial .lead{margin-bottom:1rem}.principles{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:14px}.principles li{font-size:.75rem;letter-spacing:.11em;text-transform:uppercase;padding-left:24px;position:relative}.principles li:before{content:'—';position:absolute;left:0}.training-image img{object-position:72% center;transform:none}.training-image:after{background:linear-gradient(90deg,rgba(10,21,29,.95),rgba(10,21,29,.65) 48%,rgba(10,21,29,.18) 75%,rgba(10,21,29,.7))}.life-image:after{background:linear-gradient(90deg,#f3f4f2 .5%,rgba(243,244,242,.94) 22%,rgba(243,244,242,.8) 39%,rgba(243,244,242,0) 65%,rgba(243,244,242,.65))}.life-image img{object-position:center}#life .chapter-foot>span:last-child{color:var(--charcoal);background:#f3f4f2d9;padding:8px 12px}
.fit .content{display:grid;grid-template-columns:1fr 1.4fr;column-gap:7%}.fit .eyebrow,.fit h2,.fit>.content>.lead{grid-column:1}.fit h2{margin-bottom:1.2rem}.fit-grid{display:contents}.fit-copy{grid-column:1}.proportions{grid-column:2;grid-row:1/6;align-self:center;display:grid;grid-template-columns:1fr 1fr;gap:24px;text-align:center}.proportions .eyebrow{display:block;margin:0}.proportions svg{height:280px;width:100%;fill:none;stroke:var(--petrol);stroke-width:1.5}.proportions svg .guide{stroke-width:.7;stroke-dasharray:3 5;opacity:.5}.proportions p{font-size:.8125rem;max-width:none}.proportions .diagram-note{grid-column:1/-1;font-size:.6875rem;letter-spacing:.1em}.engineering{background:var(--petrol)}.engineering-grid{display:grid;grid-template-columns:1fr 1fr;gap:7%;margin-top:2.5rem}.process{display:grid;grid-template-columns:repeat(5,1fr);list-style:none;padding:0;margin:3rem 0 0;gap:20px}.process li{border-top:1px solid #9aadb9;font-size:.875rem;padding-top:15px}.process span{display:block;font-size:.75rem;margin-bottom:20px;opacity:.8}
.development-intro{margin-top:1.5rem;max-width:52ch}.journal-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px;margin-top:2rem;max-width:860px}.journal-entry{border-bottom:1px solid #c2cacf;align-self:start}.journal-entry summary{display:block;list-style:none}.journal-entry summary::-webkit-details-marker{display:none}.journal-entry summary>img{display:block;width:100%;height:140px;object-fit:cover}.journal-entry:nth-child(2) summary>img{object-position:center 60%}.journal-text{display:grid;gap:6px;position:relative;padding:17px 35px 20px 0}.journal-number{font-size:1.3rem}.journal-title{font-size:1.1rem}.journal-caption{font-size:.8125rem;line-height:1.5}.journal-toggle{position:absolute;right:5px;top:50%;font-size:1.5rem;transition:transform .2s}.journal-entry[open] .journal-toggle{transform:rotate(45deg)}.journal-body p{font-size:.9375rem}.journal-body{padding:5px 12px 20px 0}
.follow h2{margin-bottom:1.3rem}.follow .content{max-width:740px}.follow-image:after{background:linear-gradient(90deg,rgba(8,22,33,.7),rgba(8,22,33,.4)),linear-gradient(0deg,rgba(8,22,33,.7),transparent 90%)}.follow .lead{color:var(--white)}form{max-width:600px;margin-top:2rem}form>label{display:block;font-size:.875rem;margin-bottom:.8rem}.email-row{display:flex;background:var(--white);color:var(--charcoal);gap:10px;padding:5px}.email-row input{min-width:0;flex:1;border:0;background:none;color:var(--charcoal);padding:12px;font-size:1rem;border-radius:0}.email-row input::placeholder{color:#4c5e6a}.email-row button{border:0;background:var(--petrol);color:var(--white);padding:12px 16px;font-size:.875rem;white-space:nowrap}.email-row button span{margin-left:12px}.consent{display:flex;gap:10px;align-items:flex-start;margin:18px 0 10px}.consent input{margin:3px 0;width:17px;height:17px;flex-shrink:0;accent-color:var(--white)}.consent label{font-size:.8125rem;line-height:1.5}#form-status{font-size:.8125rem;max-width:none;color:var(--muted)}.footer-brand{display:flex;align-items:center;gap:8px}.footer-brand img{margin-right:10px}.mobile-nav{display:none}.skip{position:fixed;z-index:100;top:-100px;left:20px;padding:12px;background:var(--white);color:var(--charcoal)}.skip:focus{top:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1150px) and (min-width:1000px){.rail a span{display:none}.rail{right:4vw}.chapter{padding-right:12vw}.chapter-foot{right:12vw}.editorial-copy{width:57%}}
@media(max-width:999px){.masthead{padding:22px 6vw;background:#2a3842f5;color:var(--white)}.wordmark{font-size:.9375rem;gap:12px}.brand-symbol{width:25px;height:26px}.brand-symbol img{width:25px;height:26px}.masthead .mark-white{opacity:1!important}.masthead .mark-petrol{opacity:0!important}.header-cta{font-size:.75rem;max-width:140px;text-align:right}.header-cta span{margin-left:6px}.rail{display:none}.chapter{padding:130px 7vw 140px;min-height:100svh}.chapter-foot{left:7vw;right:7vw;bottom:90px;font-size:.625rem;gap:15px}.mobile-nav{display:flex;align-items:center;justify-content:space-between;position:fixed;bottom:0;left:0;width:100%;z-index:25;background:var(--charcoal);color:var(--white);padding:7px 6vw calc(7px + env(safe-area-inset-bottom));border-top:1px solid #63727c}.mobile-nav button{color:inherit;background:none;border:0;width:44px;height:44px;font-size:1.2rem}.mobile-nav button:disabled{opacity:.3;cursor:default}.mobile-nav select{background:var(--charcoal);color:inherit;border:0;max-width:calc(100% - 100px);font-size:.8125rem;padding:10px}.progress{position:absolute;left:0;top:-2px;width:var(--progress,11.11%);height:2px;background:var(--white);transition:width .3s}.editorial-copy{width:65%}.scene:after{background:linear-gradient(90deg,#0a151deb,#0a151d8a 65%,#0a151d55)}.life-image:after{background:linear-gradient(90deg,#f3f4f2,#f3f4f2ed 45%,#f3f4f244)}.why .content{gap:0 6%}.fit .content{column-gap:4%}.proportions svg{height:220px}.engineering-grid{gap:5%}.process{gap:12px}.process li{font-size:.8125rem}}
@media(max-width:600px){h1{font-size:clamp(2.2rem,9vw,3rem)}h2,.why h2{font-size:clamp(2.2rem,8.5vw,3.2rem)}.chapter{align-items:flex-start;padding-top:128px}.hero{align-items:center}.hero-subtitle{font-size:1.3rem;max-width:24ch}.hero-image img{object-position:54% center}.eyebrow{font-size:.75rem}.why .content{grid-template-columns:1fr}.why-copy{margin-top:2rem}.why-copy p:first-child{font-size:1.15rem}.editorial-copy{width:100%;max-width:none}.editorial{display:flex;flex-direction:column}.editorial .scene{position:relative;inset:auto;order:2;width:100%;height:250px;margin-top:30px;z-index:0}.editorial .scene:after{background:none}.editorial .scene img{object-position:75%}.editorial{background:var(--charcoal)}.editorial.light{background:var(--white)}.life-image img{object-position:78%!important}.principles{gap:12px;margin-top:1.5rem}.chapter-foot>span:last-child{display:none}.fit .content{display:block}.fit-copy{margin-top:1.5rem}.proportions{margin-top:2rem;gap:12px}.proportions svg{height:190px}.proportions .diagram-note{font-size:.625rem}.engineering-grid{grid-template-columns:1fr;margin-top:1.8rem;gap:0}.process{grid-template-columns:1fr 1fr;margin-top:1.5rem;row-gap:20px}.process span{margin-bottom:12px}.journal-grid{grid-template-columns:1fr;gap:25px}.journal-entry summary>img{height:150px}.follow h2{max-width:13ch}.follow .scene:after{background:#0a151db3}.email-row{flex-direction:column}.email-row button{text-align:left;display:flex;justify-content:space-between}.footer-brand{font-size:.6rem;flex-wrap:wrap;gap:5px}.footer-brand img{display:none}.chapter-foot a{font-size:.6rem;max-width:18ch;text-align:right}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Four independently framed hero scenes remain visible at every breakpoint. */
.hero{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:4vw;padding-left:5vw;padding-right:17vw}
.hero .hero-image{opacity:.22}
.hero .hero-image:after{background:rgba(10,21,29,.35)}
.hero h1{font-size:clamp(2.7rem,3.7vw,4.6rem);line-height:1.22;letter-spacing:.045em}
.hero-subtitle{font-size:clamp(1.2rem,1.7vw,1.6rem)}
.hero-panels{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;align-self:center}
.hero-panel{position:relative;aspect-ratio:1/1.05;min-width:0;margin:0;overflow:hidden;background:var(--petrol)}
.hero-panel img{display:block;width:100%;height:100%;object-fit:cover}
.hero-panel:first-child img{object-position:75% center}
.hero-panel figcaption{position:absolute;bottom:0;left:0;right:0;padding:30px 15px 13px;font-size:.6875rem;letter-spacing:.15em;background:linear-gradient(transparent,rgba(9,20,28,.85));color:var(--white)}
@media(min-width:1000px) and (max-width:1150px){.hero{padding-right:12vw;gap:3vw}.hero h1{font-size:2.8rem}}
@media(max-width:999px){.hero{padding-left:7vw;padding-right:7vw;gap:4vw}.hero h1{font-size:2.5rem}.hero .hero-subtitle{font-size:1.2rem}}
@media(max-width:700px){.hero{grid-template-columns:1fr;padding-top:112px;padding-bottom:140px;gap:26px}.hero-panels{grid-row:1;gap:8px}.hero-panel{aspect-ratio:1.35}.hero-content{grid-row:2}.hero .eyebrow{margin-bottom:12px}.hero h1{font-size:clamp(2rem,8vw,3rem)}.hero .hero-subtitle{max-width:none;margin:12px 0;font-size:1.15rem}.hero .intro{margin-bottom:18px}.hero-panel figcaption{padding:24px 10px 9px;font-size:.625rem}.hero .chapter-foot{bottom:88px}}

/* Soft image joins without sacrificing the responsive four-scene composition. */
.hero-panels{gap:0;isolation:isolate;padding:8px}
.hero-panel{overflow:visible}
.hero-panel img{position:absolute;width:calc(100% + 28px);height:calc(100% + 28px);left:-14px;top:-14px;
-webkit-mask-image:linear-gradient(to right,transparent,#000 9%,#000 91%,transparent),linear-gradient(to bottom,transparent,#000 9%,#000 91%,transparent);
-webkit-mask-composite:source-in;
mask-image:linear-gradient(to right,transparent,#000 9%,#000 91%,transparent),linear-gradient(to bottom,transparent,#000 9%,#000 91%,transparent);mask-composite:intersect}
.hero-panel{background:transparent}
@media(max-width:700px){.hero-panels{gap:0;padding:6px}.hero-panel img{width:calc(100% + 20px);height:calc(100% + 20px);left:-10px;top:-10px}}

.hero-promise{font-size:clamp(1.5rem,2.3vw,2rem);letter-spacing:.02em;line-height:1.3;margin:1.8rem 0 1rem}.hero-mission{max-width:43ch;line-height:1.75;color:var(--muted)}
@media(max-width:700px){.hero-promise{margin:1.4rem 0 .8rem}.hero-mission{margin-bottom:0}}
@media(max-width:700px){.hero .chapter-foot>span:last-child{display:block;max-width:18ch}}

/* Technical accents complement the primary Manrope typography. */
.eyebrow,.chapter-foot,.rail a,.process span,.journal-number,.diagram-note{font-family:var(--font-mono);font-weight:400}
.eyebrow{font-weight:500;letter-spacing:.1em}
.rail a span{font-family:var(--font-sans)}
.chapter-foot{letter-spacing:.06em}
.hero h1{letter-spacing:.025em}

/* Mobile chapter navigation uses the same technical voice as section numbers. */
.mobile-nav select,.mobile-nav button{font-family:var(--font-mono);font-weight:400}
@media(max-width:360px){.mobile-nav select{font-size:.75rem;padding-inline:4px}}

/* Longer premise headline keeps a comfortable measure beside its examples. */
.why h2{font-size:clamp(2.4rem,3.5vw,4rem)}
@media(max-width:600px){.why h2{font-size:clamp(1.85rem,7.4vw,2.75rem)}}

.travel-sequence{margin-top:2rem;font-size:1.0625rem;line-height:1.8}.travel-sequence span{display:inline-block;margin-top:.35rem;font-weight:500}

/* Retain the runner and treadmill in the compact editorial image. */
@media(max-width:600px){.editorial .training-image img{object-position:85% center}}

.training-closing{margin-top:2rem;font-size:1.0625rem;line-height:1.8}

.life-closing{margin-top:2rem;font-size:1.0625rem;line-height:1.8}

/* Life returns to the atmospheric material study, including on phones. */
#life .life-image{position:absolute;inset:0;width:100%;height:100%;margin:0;z-index:-2}
#life .life-image img{object-position:80% 30%!important}
#life .life-image:after{background:linear-gradient(90deg,rgba(10,21,29,.88),rgba(10,21,29,.55) 48%,rgba(10,21,29,.2) 75%,rgba(10,21,29,.65))}
#life .chapter-foot>span:last-child{color:inherit;background:none;padding:0}
@media(max-width:600px){#life .life-image:after{background:rgba(10,21,29,.7)}}

/* Human proportion studies and an independent shirt-length study. */
.fit .content{grid-template-columns:1fr 1.5fr;column-gap:5%}
.proportions{grid-template-columns:1fr 1fr;gap:16px 22px}
.proportions svg{stroke-width:1.25;stroke-linecap:round;stroke-linejoin:round}
.proportions .body-study{height:245px;margin-top:12px}
.proportions p{margin:8px 0 0}
.length-study{grid-column:1/-1;border-top:1px solid #28445633;padding-top:18px;display:grid;grid-template-columns:1fr 1fr;align-items:center;text-align:left}
.proportions .length-study .eyebrow{grid-column:2;grid-row:1;align-self:end;margin-bottom:6px}
.proportions .length-study svg{grid-column:1;grid-row:1/3;height:150px}
.proportions .length-study p{grid-column:2;grid-row:2;align-self:start;margin:0}
.length-study .dimension{stroke-width:.8}
.proportions .diagram-note{font-size:.6rem;line-height:1.6;margin-top:0}
@media(max-width:600px){.proportions .body-study{height:220px}.proportions{margin-top:2.5rem}.proportions .length-study svg{height:145px}}

/* Neutral tailoring forms keep attention on proportions. */
.proportions .tailoring-studies{grid-column:1/-1;display:block;width:100%;height:auto;max-height:330px;object-fit:contain}
.proportions>.eyebrow{margin:0;grid-column:auto}
@media(max-width:600px){.proportions .tailoring-studies{max-height:none}}

/* Reference-based full-length fit studies. */
.proportions{width:100%;max-width:390px;justify-self:center;gap:10px 16px}
.proportions .tailoring-studies{height:390px;max-height:none;width:100%;object-fit:contain}
.proportions .length-study svg{height:110px}
.proportions>.eyebrow:first-child{padding-left:30px}
.proportions>.eyebrow:nth-child(2){padding-right:30px}
@media(max-width:600px){.proportions{max-width:none}.proportions .tailoring-studies{height:auto;max-height:none}.proportions>.eyebrow:first-child,.proportions>.eyebrow:nth-child(2){padding:0}.proportions .length-study svg{height:135px}}

/* External cut guides are separate from the garment illustration. */
.fit-illustration{grid-column:1/-1;position:relative;width:260px;max-width:100%;aspect-ratio:2/3;justify-self:center}
.proportions .fit-illustration .tailoring-studies{width:100%;height:100%;display:block}
.proportions .fit-illustration .cut-guides{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:var(--petrol);stroke-width:2.5;stroke-dasharray:10 12;stroke-linecap:butt;opacity:.65;pointer-events:none}
@media(max-width:600px){.fit-illustration{width:100%}}

/* Each figure shares a column center with its heading and caption. */
.proportions>.eyebrow:first-child,.proportions>.eyebrow:nth-child(2){padding:0}
.fit-figure{min-width:0;display:flex;justify-content:center}
.proportions .fit-figure svg{display:block;width:130px;max-width:100%;height:390px;stroke:none;overflow:hidden}
.proportions .external-cut-guide{fill:none;stroke:var(--petrol);stroke-width:2.5;stroke-dasharray:10 12;stroke-linecap:butt;opacity:.65}
@media(max-width:600px){.proportions .fit-figure svg{width:100%;height:auto;aspect-ratio:1/3}}

/* Keep the concise proportion and length footer visible on every screen size. */
#fit .chapter-foot>span:last-child{display:block;max-width:48ch;text-align:right}
@media(max-width:600px){#fit .chapter-foot{align-items:flex-end}#fit .chapter-foot>span:last-child{max-width:27ch;line-height:1.5}}

/* Shared length finishing for shirts and trousers. */
.proportions .length-study{display:flex;flex-direction:column;align-items:stretch;text-align:center;padding-top:12px;gap:7px}
.length-drawings{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.proportions .length-study .length-drawings svg{width:100%;height:110px;grid-column:auto;grid-row:auto}
.proportions .length-study .eyebrow{align-self:auto;margin:0}
.proportions .length-study p{align-self:auto;margin:0;line-height:1.55}
.proportions .length-study .length-record{font-size:.75rem;max-width:40ch;margin:0 auto}

/* Engineering principles and the work behind each stage. */
.engineering-grid{align-items:start}
.engineering-grid .lead{font-size:clamp(1.15rem,1.65vw,1.5rem);line-height:1.55;margin:0}
.engineering-grid>div>p:first-child{margin-top:0}
.process h3{font-size:1rem;font-weight:500;line-height:1.4;margin:0 0 .7rem;letter-spacing:0}
.process p{font-size:.8125rem;line-height:1.65;margin:0;opacity:.85}
#engineering .chapter-foot>span:last-child{display:block;text-align:right}
@media(max-width:600px){.engineering-grid{gap:1.25rem}.process{grid-template-columns:1fr;gap:22px}.process li{display:grid;grid-template-columns:2rem 1fr;gap:0 12px}.process span{grid-row:1/3;margin:0;padding-top:3px}.process p{grid-column:2}.process h3{margin-bottom:.5rem}#engineering .chapter-foot{align-items:flex-end}#engineering .chapter-foot>span{max-width:19ch}}

/* Compact Development chapter, with optional sourcing detail. */
#development{padding-top:110px;padding-bottom:100px}
#development h2{font-size:clamp(2rem,3.5vw,3.6rem)}
#development h3{font-size:1.1rem;font-weight:500;line-height:1.4;margin:0 0 .6rem}
.development-compact{display:grid;grid-template-columns:1fr 1fr;gap:5%;margin-top:1.8rem}
.development-compact p{font-size:.9rem;line-height:1.6;max-width:none;margin:0 0 1rem}
.development-compact .lead{font-size:1.25rem;line-height:1.5}
.partner-invitation{border-top:1px solid #28445633;padding-top:1.2rem;margin-top:1.4rem}
.partner-invitation .text-link{padding:5px 0}
.sourcing-studies{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.sourcing-studies figure{margin:0;min-width:0}
.sourcing-studies img{width:100%;height:auto;display:block;border:1px solid #28445633;border-radius:4px}
.sourcing-studies figcaption{font-size:.7rem;margin-top:.5rem}
.development-compact .sourcing-note{font-family:var(--font-mono);font-size:.6rem;margin:.8rem 0;opacity:.75}
.sourcing-detail{border-top:1px solid #28445633;padding-top:.8rem}
.sourcing-detail h3{font-size:.8125rem}
.sourcing-detail p{margin:.7rem 0 0;font-size:.8125rem}
@media(min-width:1000px){body[data-active="development"] .masthead{background:var(--white)}}
@media(max-width:600px){#development{padding-top:110px;padding-bottom:125px}.development-compact{grid-template-columns:1fr;gap:1.2rem;margin-top:1.2rem}.development-compact .lead{font-size:1.1rem}.development-compact p{font-size:.8125rem;margin-bottom:.7rem}.development-principle{display:contents}.development-evidence{grid-row:3}.partner-invitation{grid-row:4;margin:0;padding-top:.8rem}.sourcing-studies{max-width:310px}.sourcing-detail h3{font-size:.75rem}#development .eyebrow{margin-bottom:.8rem}}

@media(max-width:600px){#development{padding-top:100px;padding-bottom:105px}#development h2{font-size:1.75rem}.development-compact{gap:.7rem;margin-top:1rem}.development-compact .lead{font-size:1rem}.development-principle>p:not(.lead){display:none}.sourcing-studies{max-width:240px}.development-compact .sourcing-note{margin:.5rem 0}.sourcing-detail{padding-top:.5rem}#development h3{font-size:1rem;margin-bottom:.4rem}}

/* Follow on Instagram while email registration is unavailable. */
.instagram-follow{margin:1.6rem 0 2rem}
.instagram-follow p{margin-bottom:.75rem}
.instagram-follow .button-link{min-width:240px}
.signup-unavailable .email-row{opacity:.4}
.signup-unavailable input,.signup-unavailable button{cursor:not-allowed}
.signup-unavailable .consent,.signup-unavailable>.small{display:none}
.signup-unavailable #form-status{margin-top:.8rem}

/* Initial release: compact laptop chapters without shrinking phone copy. */
@media(min-width:1000px) and (max-height:850px){
 .chapter{padding-top:96px;padding-bottom:76px}
 .chapter-foot{bottom:22px}
 .hero-panels{max-width:390px;justify-self:center}
 .hero h1{font-size:clamp(2.3rem,3.2vw,3.4rem)}
 .hero-promise{margin:1.1rem 0 .7rem}
 .hero-mission{font-size:.9375rem;line-height:1.6}
 .eyebrow{margin-bottom:.9rem}
 .editorial h2{font-size:2.6rem;margin-bottom:1rem}
 .editorial p{font-size:.9375rem;line-height:1.55;margin-bottom:.8rem}
 .editorial .lead{font-size:1.2rem}
 .training-closing,.life-closing,.travel-sequence{margin-top:1rem}
 .proportions{max-width:360px;gap:7px 16px}
 .proportions .fit-figure svg{height:260px;width:87px}
 .proportions .length-study .length-drawings svg{height:70px}
 .proportions .length-study{gap:5px;padding-top:8px}
 .proportions p{margin-top:3px}
 .engineering-grid{margin-top:1.4rem;gap:5%}
 .engineering-grid .lead{font-size:1.2rem}
 .engineering-grid p{font-size:.9375rem;line-height:1.5}
 .process{margin-top:1.4rem;gap:15px}
 .process span{margin-bottom:10px}
 .process p{line-height:1.5}
 #development{padding-top:96px;padding-bottom:76px}
 .development-compact{margin-top:1.2rem}
 .development-compact p{font-size:.875rem;line-height:1.5;margin-bottom:.75rem}
 .development-compact .lead{font-size:1.15rem}
 .sourcing-studies{max-width:330px}
 .partner-invitation{margin-top:1rem;padding-top:.9rem}
 .sourcing-detail p{font-size:.8125rem}
}