:root{color-scheme:light;--paper:#faf8f4;--ink:#282522;--muted:#69615a;--accent:#ad1414;--line:#ded8ce}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Instrument Sans',system-ui,sans-serif;font-size:17px;line-height:1.7}a{color:inherit;text-underline-offset:5px}a:focus-visible{outline:3px solid var(--accent);outline-offset:6px}.shell{max-width:1160px;margin:auto;padding-inline:36px}.masthead{display:flex;justify-content:space-between;align-items:center;padding-block:28px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-weight:700;font-size:22px;letter-spacing:-.6px}.brand span{display:block;font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:1.8px;color:var(--muted)}.back{font-size:14px}.intro{padding:76px 0 32px}.eyebrow{color:var(--accent);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:2px;margin:0 0 22px}.eyebrow span{color:#aaa;margin:0 12px}h1,h2{font-family:'Young Serif',Georgia,serif;font-weight:400}h1{font-size:clamp(48px,7.8vw,96px);line-height:1.07;letter-spacing:-3px;margin:0 0 30px}.lead{font-size:25px;margin:0 0 12px}.summary{max-width:650px;color:var(--muted);margin:0}.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:40px 0 0;padding-top:28px;border-top:1px solid var(--line)}dt{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin-bottom:10px}dd{margin:0;font-size:15px;line-height:1.6}.badge{display:inline-block;border:1px solid #c6b8a6;background:#f0eae0;border-radius:30px;padding:4px 15px;font-size:13px}.archive-note{background:#f0eae0;border-left:3px solid #b29571;padding:18px 22px;font-size:14px;color:#554b40;margin:12px 0 36px}figure{margin:0}figure a{display:block;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;box-shadow:0 14px 40px #30271b0c}img{display:block;width:100%;height:auto}figcaption{color:var(--muted);font-size:13px;margin-top:15px}figcaption span{font-weight:600;color:var(--ink);margin-right:15px}.story{display:grid;grid-template-columns:1fr 2fr;gap:40px;padding:90px 0;border-bottom:1px solid var(--line)}h2{font-size:clamp(30px,3.6vw,43px);line-height:1.25;letter-spacing:-1px;margin:0 0 24px}.story p:not(.eyebrow),.screen-heading>p:last-child,.closing>p:not(.eyebrow){color:var(--muted)}.story p:last-child{margin-bottom:0}.details article{padding-top:70px}.screen-heading{max-width:700px;margin-bottom:30px}.screen-heading .eyebrow{margin-bottom:16px}.closing{max-width:760px;margin:80px auto 0;padding:55px 0 75px;text-align:center;border-top:1px solid var(--line)}.button{display:inline-flex;align-items:center;gap:30px;margin-top:20px;background:var(--accent);color:white;padding:14px 22px;border-radius:6px;text-decoration:none;font-size:15px;font-weight:600}.button:hover{background:#7f0404}.footer{border-top:1px solid var(--line);padding-block:26px;display:flex;justify-content:space-between;gap:20px;font-size:13px;color:var(--muted)}.skip{position:fixed;top:-100px;left:20px;background:white;padding:12px;z-index:10}.skip:focus{top:10px}@media(max-width:640px){.shell{padding-inline:22px}.masthead{padding-block:20px}.brand{font-size:19px}.brand span{font-size:9px}.back{font-size:12px}.intro{padding-top:45px}h1{letter-spacing:-2px}.lead{font-size:21px}.facts{grid-template-columns:1fr 1fr;gap:24px 18px}.story{grid-template-columns:1fr;gap:0;padding:50px 0}.details article{padding-top:48px}.closing{margin-top:50px;padding-bottom:50px}.footer{flex-direction:column;gap:8px}figcaption span{display:block;margin-bottom:4px}}

/* Archived implementation highlights */
.engineering{margin-top:80px;padding-top:60px;border-top:1px solid var(--line)}.engineering-intro{max-width:720px;color:var(--muted)}.feature{margin-top:48px;padding:36px;border:1px solid var(--line);border-radius:12px;background:#fffdf9;min-width:0}.feature h3{font-family:'Young Serif',Georgia,serif;font-size:clamp(25px,3vw,34px);font-weight:400;line-height:1.3;margin:0 0 24px}.feature>p:not(.eyebrow){color:var(--muted)}.feature code{font-size:.88em;overflow-wrap:anywhere}.feature-flow{padding-left:24px}.feature-flow li{padding-left:8px;margin:14px 0}.code-sample{min-width:0;margin:26px 0;border:1px solid #393633;border-radius:8px;overflow:hidden;background:#242321;color:#f4eee5}.code-label{margin:0;padding:12px 18px;background:#302e2b;color:#ddd1bf;font-size:12px;letter-spacing:.5px}.code-sample pre{margin:0;padding:22px;max-width:100%;overflow-x:auto;font-size:13px;line-height:1.8;tab-size:2}.code-sample pre code{font-size:inherit;overflow-wrap:normal}.implementation-note{font-size:14px;border-left:3px solid #b29571;padding:8px 0 8px 18px}.function-list{margin:28px 0}.function-list>div{padding:18px 0;border-top:1px solid var(--line)}.function-list dt{text-transform:none;letter-spacing:0;font-size:17px;color:var(--accent)}.function-list dd{color:var(--muted);font-size:16px}.source-details summary{cursor:pointer;font-weight:600;padding:12px 0;text-underline-offset:5px}.source-details summary:hover{text-decoration:underline}.source-details summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}@media(max-width:640px){.engineering{margin-top:50px;padding-top:40px}.feature{padding:22px 16px;margin-top:30px}.code-sample pre{padding:16px;font-size:12px}.code-label{padding:10px 14px}.feature-flow{padding-left:18px}}

/* Case-study navigation */
.case-toc{margin:12px 0 32px;padding:26px 28px;border:1px solid var(--line);border-radius:10px;background:#fffdf9}.case-toc h2{font-family:inherit;font-size:15px;font-weight:700;letter-spacing:0;margin:0 0 18px}.case-toc ul{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px 24px;padding:0;margin:0}.case-toc a{display:inline-block;font-size:14px;color:var(--muted);padding-block:4px}.case-toc a:hover{color:var(--accent)}[id]{scroll-margin-top:24px}.contents-return{position:fixed;right:22px;bottom:20px;z-index:5;padding:10px 16px;border:1px solid var(--line);border-radius:30px;background:var(--paper);box-shadow:0 4px 18px #28252218;font-size:13px;text-decoration:none}.contents-return:hover{color:var(--accent)}.footer{padding-bottom:90px}@media(max-width:640px){.case-toc{padding:22px}.case-toc ul{grid-template-columns:1fr 1fr;gap:8px 16px}.contents-return{right:14px;bottom:14px}}