:root{--paper:#faf8f3;--ink:#111410;--green:#0a4823;--line:#858a82;--soft:#e7eadc;--mono:ui-monospace,'SFMono-Regular',Consolas,'Liberation Mono',monospace;--sans:Arial,Helvetica,sans-serif;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:1.5rem}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.42;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:6px}a:hover{color:var(--green)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:5px}button{font:inherit}img{display:block;max-width:100%;height:auto}.wrap{width:min(1120px,calc(100% - 80px));margin-inline:auto}.skip{position:absolute;top:-100px;left:20px;z-index:10;padding:12px;background:var(--green);color:white}.skip:focus{top:12px}.header{display:flex;align-items:center;justify-content:space-between;gap:25px;min-height:84px;border-bottom:1px solid var(--line)}.identity{display:flex;align-items:center;gap:21px;text-decoration:none;white-space:nowrap;font-size:21px;font-weight:700;letter-spacing:-.7px}.identity img{width:48px;height:auto}.identity span{border-left:1px solid var(--line);padding-left:21px}.nav{display:flex;align-items:center;gap:32px}.nav>a{text-decoration:none;font-size:16px}.header-actions{display:flex;align-items:center;gap:23px}.languages{display:flex;border:1px solid var(--line);border-radius:4px;overflow:hidden;font-family:var(--mono);font-size:13px;line-height:1}.languages a{padding:5px 8px;text-decoration:none}.languages [aria-current]{color:white;background:var(--green)}.header-actions>.button{border-left-width:1px}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:1px solid var(--green);border-radius:4px;background:transparent;color:var(--green);padding:9px 21px;font-weight:700;text-decoration:none;line-height:1.2;cursor:pointer}.button:hover{background:#e6ebdf}.button.primary{background:var(--green);color:white;padding:12px 22px}.button.primary:hover{background:#123c22}.button:disabled{cursor:default;opacity:1}.header .button{font-size:15px;padding:7px 14px}.eyebrow{font:700 14px/1.4 var(--mono);letter-spacing:.025em;color:var(--green);text-transform:uppercase;margin:0 0 15px}.hero{display:grid;grid-template-columns:1fr 1.12fr;gap:24px;align-items:center;padding-block:34px 30px}.hero h1{font-size:clamp(40px,4.8vw,62px);line-height:1.01;letter-spacing:-2.8px;margin:0 0 19px;max-width:540px}.hero-copy>p:not(.eyebrow){font-size:20px;line-height:1.35;margin:0;max-width:480px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:24px;margin-top:23px}.text-link{color:var(--green);font-weight:700;text-decoration:none;border-bottom:1px solid var(--green);padding-bottom:3px;display:inline-block}.hero-actions .text-link{font-weight:400;color:var(--ink);white-space:nowrap}.hero-art{margin:0 -21px 0 -5px}.hero-art img{width:100%}.expertise{display:flex;justify-content:space-around;list-style:none;margin:0;padding:13px 0;border-block:1px solid var(--line);font:16px/1.4 var(--mono)}.expertise li{text-align:center;padding:0 23px;flex:1}.expertise li+li{border-left:1px solid var(--line)}.services{padding-block:25px 34px}.section-title{font-size:clamp(30px,3.8vw,46px);line-height:1.12;letter-spacing:-1.6px;margin:0 0 24px}.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.service{display:flex;flex-direction:column;align-items:flex-start}.service+.service{border-left:1px solid var(--line);padding-left:30px}.service h3{font-size:23px;line-height:1.2;letter-spacing:-.8px;margin:0 0 10px}.service>p{margin:0 0 16px;line-height:1.35}.service .deliverable{background:var(--soft);border-radius:4px;padding:7px 11px;font:14px/1.4 var(--mono);margin-top:auto;width:100%}.deliverable strong{color:var(--green)}.service .text-link{margin-top:3px}.open-source{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;border-top:1px solid var(--line);padding-block:22px 28px;align-items:center}.open-source .section-title{font-size:40px;margin-bottom:10px;max-width:350px}.open-source p:last-child{margin:0;max-width:350px}.project-card{display:flex;align-items:center;gap:27px;border:1.5px solid var(--green);border-radius:5px;padding:23px 26px;margin-top:18px}.braces{font:54px/1 var(--mono);color:var(--green);border-right:1px solid var(--line);padding-right:25px;white-space:nowrap}.project-card h3{font-size:25px;line-height:1.2;letter-spacing:-.7px;margin:0 0 7px}.project-card .tags{font:14px/1.5 var(--mono);margin-bottom:13px}.writing{background:linear-gradient(110deg,#e7ebdf,#edf0e6 60%,#e6eadc);padding:19px 0 24px}.writing .eyebrow{margin-bottom:8px}.book-grid{display:grid;grid-template-columns:.85fr 1.15fr;align-items:center;gap:48px}.book-image{width:294px;margin:0 auto;filter:drop-shadow(0 18px 12px #17271838) drop-shadow(0 4px 3px #17271826)}.book-copy h2{font-size:clamp(36px,4.7vw,58px);line-height:1.05;letter-spacing:-2px;margin:0 0 10px}.book-copy .tagline{font-size:32px;line-height:1.13;letter-spacing:-.8px;margin:0 0 17px;max-width:470px}.book-copy>p:not(.tagline){font-size:19px;line-height:1.4;max-width:500px;margin:0 0 22px}.book-details{margin-top:14px;max-width:500px}.book-details summary{display:inline-block;list-style:none;cursor:pointer}.book-details summary::-webkit-details-marker{display:none}.book-details[open] summary{margin-bottom:14px}.book-details p{margin:0;font-size:16px}.closing{display:flex;justify-content:space-between;align-items:center;gap:30px;padding-block:28px 16px}.closing h2{font-size:35px;line-height:1.06;letter-spacing:-1.1px;margin:0 0 8px;max-width:620px}.closing p{margin:0;font-size:16px}.closing .button{min-width:180px;flex-shrink:0}.footer{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding-block:12px 18px;font:13px/1.5 var(--mono)}.footer p{margin:0}.footer-links{display:flex;align-items:center;gap:20px}.footer-links span{border-left:1px solid var(--line);padding-left:20px;font-style:italic}.footer a{text-decoration:none}.footer a:hover{text-decoration:underline}
@media(min-width:1400px){.hero{padding-block:40px}.hero h1{font-size:64px}.wrap{width:min(1160px,calc(100% - 100px))}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.header{flex-wrap:wrap;padding-block:16px;gap:18px}.identity{margin-right:auto}.nav{order:3;width:100%;justify-content:center;gap:40px;padding-top:6px}.hero h1{font-size:49px}.hero-actions{gap:15px}.hero-copy>p:not(.eyebrow){font-size:18px}.hero-art{margin:0 -15px}.expertise{font-size:13px}.expertise li{padding-inline:10px}.service-grid{gap:20px}.service+.service{padding-left:20px}.service h3{font-size:21px}.service .text-link{font-size:15px}.open-source{gap:25px}.project-card{padding:20px;gap:20px}.braces{font-size:40px;padding-right:20px}.project-card h3{font-size:22px}.book-grid{gap:25px}.book-image{width:270px}.book-copy .tagline{font-size:28px}.footer-links{gap:12px}.footer-links span{padding-left:12px}}
@media(max-width:680px){.wrap{width:calc(100% - 36px)}.header{gap:15px;min-height:0}.identity{font-size:16px;gap:12px;letter-spacing:-.5px}.identity img{width:35px}.identity span{padding-left:12px}.header-actions{gap:12px}.header-actions>.button{display:none}.nav{justify-content:space-between;gap:12px}.nav>a{font-size:14px}.hero{grid-template-columns:1fr;padding-top:30px;gap:15px}.hero h1{font-size:clamp(42px,9.8vw,60px);max-width:510px;letter-spacing:-2px}.hero-copy>p:not(.eyebrow){max-width:480px;font-size:18px}.eyebrow{font-size:12px}.hero-art{margin:0 -10px}.hero-actions{gap:18px}.hero-actions .button{font-size:15px;padding:11px 16px}.hero-actions .text-link{font-size:15px}.expertise{display:grid;grid-template-columns:1fr 1fr;gap:13px 0;padding:13px 0;font-size:12px}.expertise li:nth-child(3){border:0}.section-title{font-size:34px;letter-spacing:-1.2px}.services{padding-block:25px}.service-grid{grid-template-columns:1fr;gap:23px}.service+.service{padding:23px 0 0;border-left:0;border-top:1px solid #b7bbb2}.service h3{font-size:24px}.service>p{font-size:17px}.service .text-link{font-size:17px}.service .deliverable{margin-bottom:12px;font-size:14px}.open-source{grid-template-columns:1fr;gap:8px;padding-block:24px}.open-source .section-title{font-size:34px;max-width:100%}.project-card{margin-top:10px;padding:20px 17px;gap:17px}.project-card h3{font-size:21px}.project-card .tags{font-size:12px}.braces{font-size:36px;padding-right:17px}.writing{padding-block:22px 30px}.book-grid{grid-template-columns:1fr;gap:23px}.book-image{width:230px;margin-top:12px}.book-copy h2{font-size:40px}.book-copy .tagline{font-size:27px}.book-copy>p:not(.tagline){font-size:17px}.closing{align-items:flex-start;flex-direction:column;padding-block:28px 24px;gap:20px}.closing h2{font-size:32px}.footer{align-items:flex-start;flex-direction:column;gap:12px;font-size:12px}.footer-links{flex-wrap:wrap;gap:18px}.footer-links span{flex-basis:100%;padding:0;border:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Personal introduction */
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;border-top:1px solid var(--line);padding-block:30px 34px;align-items:start}
.about .section-title{font-size:40px;margin-bottom:0;max-width:390px}
.about-copy p{margin:0 0 17px;max-width:610px}
.about-copy .about-intro{font-size:21px;line-height:1.4;letter-spacing:-.3px}
.about-copy .text-link{margin-top:2px}
.nav{gap:24px}
@media(max-width:1000px){.about{gap:25px}.nav{gap:32px}}
@media(max-width:680px){.about{grid-template-columns:1fr;gap:20px;padding-block:25px}.about .section-title{font-size:34px;max-width:100%}.about-copy .about-intro{font-size:20px}.nav{gap:10px}.nav>a{font-size:13px}}

/* Native disclosures keep every FAQ readable without JavaScript. */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;padding-block:34px 36px;border-bottom:1px solid var(--line)}
.faq-heading .section-title{font-size:40px;margin-bottom:0}
.faq-item{border-bottom:1px solid #b7bbb2}
.faq-item:first-child{border-top:1px solid #b7bbb2}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:18px;list-style:none;cursor:pointer;font-weight:700;line-height:1.35}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';color:var(--green);font:24px/1 var(--mono);flex-shrink:0}
.faq-item[open] summary::after{content:'−'}
.faq-item summary:hover{color:var(--green)}
.faq-item p{margin:0;padding:0 30px 20px 0;line-height:1.55}
@media(max-width:1000px){.faq{gap:25px}}
@media(max-width:680px){.faq{grid-template-columns:1fr;gap:22px;padding-block:28px}.faq-heading .section-title{font-size:34px}.faq-item summary{gap:14px;font-size:17px;min-height:58px}.faq-item p{padding-right:0;font-size:16px}}

/* Contact form: the same editorial grid as the introduction and FAQ. */
.contact{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;padding-block:34px 38px;align-items:start}
.contact-intro .section-title{font-size:36px;margin-bottom:16px;letter-spacing:-1.2px}
.contact-intro>p:last-child{margin:0;max-width:370px;line-height:1.5}
.contact-form{display:flex;flex-direction:column;gap:20px;min-width:0}
.contact-fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px;min-width:0}
.form-field label{font-size:15px;font-weight:700}
.form-field input,.form-field textarea{display:block;width:100%;min-width:0;border:1px solid #979e91;border-radius:4px;background:#fffdf8;color:var(--ink);padding:12px 13px;font:16px/1.5 var(--sans)}
.form-field textarea{resize:vertical;min-height:155px}
.form-field input:focus-visible,.form-field textarea:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.form-field .form-hint{margin:0;font-size:13px;line-height:1.4;color:#4e584d}
.contact-form>.button{align-self:flex-start;min-height:46px}
@media(max-width:1000px){.contact{gap:25px}.contact-fields{gap:14px}}
@media(max-width:680px){.contact{grid-template-columns:1fr;gap:25px;padding-block:28px 32px}.contact-intro .section-title{font-size:32px;max-width:100%}.contact-intro>p:last-child{max-width:100%}.contact-fields{grid-template-columns:1fr;gap:20px}.contact-form>.button{width:100%}}