:root{--bg:#050908;--panel:#0b1210;--panel2:#101916;--text:#e8efec;--muted:#93a69d;--green:#75e6a5;--cyan:#62d4e9;--orange:#e4a65d;--line:#20332b;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 70% -10%,#14271e 0,transparent 31%),linear-gradient(rgba(80,130,103,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(80,130,103,.035) 1px,transparent 1px),var(--bg);background-size:auto,34px 34px,34px 34px,auto;color:var(--text);font:16px/1.62 Inter,Segoe UI,Arial,sans-serif}.wrap{width:min(var(--max),calc(100% - 42px));margin:auto}.nav{position:sticky;top:0;z-index:50;background:rgba(5,9,8,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.navin{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{color:var(--text);text-decoration:none;letter-spacing:.08em;font-size:12px}.brand b{color:var(--green);font-size:15px}.links{display:flex;gap:18px;align-items:center}.links a{color:var(--muted);text-decoration:none;font-size:12px}.links a:hover{color:var(--green)}.hero,.pagehead{display:grid;align-items:center;border-bottom:1px solid var(--line)}.hero{min-height:72vh;padding:70px 0}.homehero{min-height:78vh;text-align:center}.pagehead{padding:70px 0 55px}.abe-mark{width:min(460px,70vw);height:auto;max-height:270px;object-fit:contain;margin:0 auto 14px;display:block;filter:drop-shadow(0 0 24px rgba(117,230,165,.1))}.eyebrow,.kicker,.tag{font:700 11px/1.25 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--green)}.orange{color:var(--orange)!important}.cyan{color:var(--cyan)!important}h1{font-size:clamp(44px,7.5vw,94px);line-height:.94;letter-spacing:-.05em;margin:16px 0 22px}h1 span{color:var(--green)}h2{font-size:clamp(29px,4vw,50px);line-height:1.05;letter-spacing:-.035em;margin:8px 0 18px}h3{font-size:20px;line-height:1.25;margin:9px 0}.lead,.section-intro{max-width:820px;color:#c0cdc7;font-size:18px}.homehero .lead,.center{margin-left:auto;margin-right:auto}.microline{font:600 11px/1.4 ui-monospace,monospace;letter-spacing:.13em;color:var(--muted);margin:18px 0}.section{padding:72px 0;border-bottom:1px solid var(--line)}.compact{padding:55px 0}.grid2,.grid3,.grid4{display:grid;gap:16px;margin-top:26px}.grid2{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:repeat(3,1fr)}.grid4{grid-template-columns:repeat(4,1fr)}.card,.project{background:linear-gradient(145deg,rgba(16,25,21,.95),rgba(8,13,11,.95));border:1px solid var(--line);border-radius:14px;overflow:hidden}.card{padding:22px}.project{display:flex;flex-direction:column}.project img{width:100%;height:205px;object-fit:cover;border-bottom:1px solid var(--line)}.project .inside{padding:20px;display:flex;flex-direction:column;flex:1}.project p,.card p{color:var(--muted)}.project .btn{margin-top:auto;align-self:flex-start}.status{display:inline-block;font:700 10px ui-monospace,monospace;letter-spacing:.08em;padding:6px 9px;border:1px solid var(--line);border-radius:999px;color:var(--green);margin-bottom:5px}.status.concept{color:var(--orange)}.btn{display:inline-block;padding:11px 15px;border:1px solid #39624e;border-radius:7px;color:#07100c;background:var(--green);font:700 11px ui-monospace,monospace;letter-spacing:.06em;text-decoration:none}.btn.alt{background:transparent;color:var(--text);border-color:var(--line)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.homehero .actions{justify-content:center}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center;margin-top:26px}.photo{width:100%;display:block;border:1px solid var(--line);border-radius:14px;object-fit:cover}.widephoto{aspect-ratio:16/9}.quote{margin-top:25px;padding:20px 22px;border-left:3px solid var(--green);background:#0b1210;color:#cbd8d1;font-size:18px}.principle{font-size:21px;color:var(--green);max-width:900px}.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:28px}.timeline div{background:var(--panel);padding:20px}.timeline b{display:block;color:var(--green);font:700 18px ui-monospace,monospace}.timeline span,.small{color:var(--muted);font-size:13px}.footer{padding:40px 0;color:var(--muted)}.footer strong{color:var(--text)}.back{color:var(--green);text-decoration:none;font:700 11px ui-monospace,monospace}.warning{margin-top:24px;padding:18px;border:1px solid #4a3c28;background:#151109;color:#cdbd9f;border-radius:10px}.flow{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:24px 0}.flow span{border:1px solid var(--line);padding:9px 11px;border-radius:8px;font:700 10px ui-monospace,monospace;color:var(--cyan)}.flow i{color:var(--muted)}.metric{display:block;font:700 28px ui-monospace,monospace;color:var(--green)}
/* Chapter navigation: V0.5 avoids endless pages */.chapterbar{position:sticky;top:62px;z-index:40;background:rgba(5,9,8,.94);border-bottom:1px solid var(--line);overflow:auto}.chapterbar .wrap{display:flex;gap:7px;padding-top:9px;padding-bottom:9px}.chapterbar button{white-space:nowrap;border:1px solid var(--line);background:var(--panel);color:var(--muted);padding:9px 12px;border-radius:8px;font:700 10px ui-monospace,monospace;letter-spacing:.05em;cursor:pointer}.chapterbar button.active,.chapterbar button:hover{color:#06100b;background:var(--green);border-color:var(--green)}.chapters .chapter{display:none}.chapters .chapter.active{display:block}.chapter .section:first-child{border-top:0}.chapterhero{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.chapterhero img{max-height:520px}.logo-small{height:36px;width:auto;vertical-align:middle;margin-right:9px}.proofstrip{display:grid;grid-template-columns:1.3fr .7fr;gap:18px;margin-top:28px}.proofstrip img{height:100%;min-height:260px;object-fit:cover}.public-note{color:var(--muted);font-size:12px;margin-top:12px}
@media(max-width:760px){.wrap{width:min(100% - 26px,var(--max))}.navin{min-height:54px}.links{gap:10px}.links a{font-size:10px}.links a:nth-child(n+3){display:none}.hero{min-height:auto;padding:42px 0}.homehero{min-height:auto;padding:48px 0}.pagehead{padding:42px 0 34px}.abe-mark{width:min(270px,76vw);max-height:160px;margin-bottom:8px}h1{font-size:clamp(36px,12vw,56px);margin:12px 0 16px}h2{font-size:clamp(27px,8vw,38px)}.lead,.section-intro{font-size:16px}.section{padding:45px 0}.compact{padding:36px 0}.grid2,.grid3,.grid4,.split,.chapterhero,.proofstrip{grid-template-columns:1fr}.project img{height:175px}.card{padding:18px}.project .inside{padding:18px}.timeline{grid-template-columns:1fr 1fr}.quote{font-size:16px}.microline{font-size:9px}.actions .btn{flex:1;text-align:center}.chapterbar{top:54px}.chapterbar .wrap{width:100%;padding-left:13px;padding-right:13px}.chapterbar button{padding:8px 10px}.widephoto{aspect-ratio:auto}.proofstrip img{min-height:0}.homehero .eyebrow{font-size:9px}.principle{font-size:18px}}
@media(max-width:420px){.wrap{width:calc(100% - 22px)}.brand{font-size:10px}.brand b{font-size:13px}.links a:nth-child(n+2){display:none}.abe-mark{width:220px}.timeline{grid-template-columns:1fr}.project img{height:155px}.flow i{display:none}.flow span{width:100%;text-align:center}.section{padding:38px 0}}

/* V0.5.1 — compact mobile presentation. Desktop intentionally unchanged. */
.engineering-process{width:100%;max-height:680px;object-fit:cover;object-position:center}
@media(max-width:760px){
  body{font-size:14px;line-height:1.48;background-size:auto,24px 24px,24px 24px,auto}
  .wrap{width:calc(100% - 24px)}
  .navin{min-height:48px;gap:8px}.brand{font-size:9px}.brand b{font-size:12px}.links{gap:7px}.links a{font-size:9px}
  .hero,.homehero{padding:28px 0}.pagehead{padding:28px 0 24px}
  .abe-mark{width:min(190px,58vw);max-height:110px;margin-bottom:4px}
  h1{font-size:clamp(28px,8.5vw,40px);line-height:.98;margin:9px 0 12px}
  h2{font-size:clamp(23px,6.5vw,31px);margin:6px 0 12px}h3{font-size:17px}
  .lead,.section-intro{font-size:14px;line-height:1.5}.eyebrow,.kicker,.tag{font-size:9px}.microline{margin:10px 0;font-size:8px}
  .section{padding:30px 0}.compact{padding:26px 0}.grid2,.grid3,.grid4,.split,.chapterhero,.proofstrip{gap:12px;margin-top:16px}
  .card{padding:14px;border-radius:10px}.project{border-radius:10px}.project img{height:130px}.project .inside{padding:14px}.project p,.card p{margin:.45em 0;font-size:13px}
  .btn{padding:9px 11px;font-size:9px}.actions{margin-top:15px;gap:7px}
  .quote{margin-top:15px;padding:13px 14px;font-size:14px}.principle{font-size:16px}
  .timeline{margin-top:17px}.timeline div{padding:13px}.timeline b{font-size:15px}.timeline span,.small{font-size:11px}
  .chapterbar{top:48px}.chapterbar .wrap{gap:5px;padding:6px 10px}.chapterbar button{padding:6px 8px;font-size:8px;border-radius:6px}
  .chapterhero img,.photo{max-height:330px;object-fit:cover}.engineering-process{max-height:250px;object-fit:cover}
  .proofstrip img{height:190px;object-fit:cover}.widephoto{max-height:260px;object-fit:cover}
  .flow{margin:14px 0;gap:5px}.flow span{padding:7px 8px;font-size:8px}.metric{font-size:22px}
  .footer{padding:25px 0;font-size:12px}.public-note{font-size:10px}
}
@media(max-width:430px){
  .wrap{width:calc(100% - 20px)}
  .abe-mark{width:165px}.hero,.homehero{padding:23px 0}.pagehead{padding:24px 0 20px}
  h1{font-size:clamp(26px,8vw,34px)}h2{font-size:clamp(21px,6vw,27px)}
  .section{padding:26px 0}.project img{height:112px}.card,.project .inside{padding:12px}
  .chapterhero img,.photo{max-height:270px}.engineering-process{max-height:210px}.proofstrip img{height:160px}.widephoto{max-height:220px}
}

/* V0.6 — structural revision + genuine mobile layout */
.homehero-v06{text-align:left;min-height:auto;padding:64px 0}.hero-grid-v06{display:grid;grid-template-columns:minmax(0,.82fr) minmax(520px,1.18fr);gap:44px;align-items:center}.hero-copy-v06 .abe-mark{width:230px;max-height:125px;margin:0 0 22px}.hero-copy-v06 h1{font-size:clamp(48px,5.8vw,78px)}.hero-copy-v06 .lead{max-width:600px}.hero-copy-v06 .actions{justify-content:flex-start}.hero-engineering-v06{display:block;position:relative;text-decoration:none;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#08100d;box-shadow:0 28px 80px rgba(0,0,0,.32)}.hero-engineering-v06 img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}.hero-engineering-v06 span{position:absolute;left:18px;bottom:16px;padding:8px 11px;background:rgba(5,9,8,.82);border:1px solid rgba(117,230,165,.38);border-radius:6px;color:var(--green);font:700 9px ui-monospace,monospace;letter-spacing:.08em}.engineering-home-v06{padding-top:58px}.engineering-intro-v06{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:end;margin-bottom:24px}.engineering-intro-v06 p{margin:0;color:var(--muted);max-width:620px}.home-process-v06{max-height:none;aspect-ratio:16/9;object-fit:cover}.engineering-home-v06 a{display:block;text-decoration:none}
@media(max-width:900px){.hero-grid-v06{grid-template-columns:1fr;gap:28px}.hero-copy-v06{text-align:center}.hero-copy-v06 .abe-mark{margin-left:auto;margin-right:auto}.hero-copy-v06 .lead{margin-left:auto;margin-right:auto}.hero-copy-v06 .actions{justify-content:center}.hero-engineering-v06{max-width:760px;margin:auto}.engineering-intro-v06{grid-template-columns:1fr;gap:6px}}
@media(max-width:760px){
  body{font-size:15px;line-height:1.5}.wrap{width:calc(100% - 30px)}
  .nav{position:sticky}.navin{min-height:52px}.brand{font-size:10px;letter-spacing:.06em}.brand b{font-size:13px}.links{display:none}
  .homehero-v06{padding:26px 0 30px}.hero-grid-v06{display:flex;flex-direction:column;gap:20px}.hero-copy-v06{text-align:left;width:100%}.hero-copy-v06 .abe-mark{width:118px;max-height:72px;margin:0 0 18px}.hero-copy-v06 .eyebrow{font-size:8px;line-height:1.4}.hero-copy-v06 h1{font-size:clamp(35px,11.2vw,48px);line-height:.94;margin:10px 0 14px}.hero-copy-v06 .lead{font-size:15px;line-height:1.48;margin:0;max-width:none}.hero-copy-v06 .microline{font-size:7px;margin:13px 0}.hero-copy-v06 .actions{justify-content:flex-start;display:grid;grid-template-columns:1fr;gap:8px;margin-top:15px}.hero-copy-v06 .btn{width:100%;text-align:center;font-size:9px;padding:10px 12px}.hero-copy-v06 .btn.alt{display:none}
  .hero-engineering-v06{order:2;width:100%;border-radius:9px}.hero-engineering-v06 img{aspect-ratio:16/9}.hero-engineering-v06 span{left:9px;bottom:8px;font-size:7px;padding:6px 7px}
  .engineering-home-v06{padding:28px 0}.engineering-intro-v06{display:block;margin-bottom:14px}.engineering-intro-v06 h2{font-size:26px}.engineering-intro-v06 p{font-size:14px}.home-process-v06{max-height:none;aspect-ratio:16/9;border-radius:9px}
  .section{padding:34px 0}.compact{padding:30px 0}.section h2{font-size:28px}.section-intro{font-size:14px}.grid3,.grid2,.grid4{grid-template-columns:1fr;gap:12px}.project{display:grid;grid-template-columns:42% 58%;min-height:145px}.project img{width:100%;height:100%;min-height:145px;border-bottom:0;border-right:1px solid var(--line)}.project .inside{padding:12px}.project h3{font-size:17px;margin:5px 0}.project p{font-size:12px;line-height:1.35;margin:4px 0 10px}.project .status{font-size:7px;padding:4px 6px}.project .btn{font-size:8px;padding:7px 8px}.chapterhero{display:flex;flex-direction:column;gap:18px}.chapterhero .photo{max-height:none;aspect-ratio:16/10}.timeline{grid-template-columns:1fr 1fr}.timeline div{padding:12px}.timeline b{font-size:14px}.timeline span{font-size:10px}.principle{font-size:16px}.footer{padding:24px 0}.footer .wrap{font-size:12px}
  .pagehead{padding:30px 0 24px}.pagehead h1{font-size:34px}.pagehead .lead{font-size:15px}.quote{font-size:14px}.chapterbar{top:52px}.chapterbar .wrap{overflow-x:auto}.chapterbar button{font-size:8px;padding:7px 9px}.chapters .section{padding:30px 0}.engineering-process{max-height:none;aspect-ratio:16/9}.proofstrip{grid-template-columns:1fr;gap:10px}.proofstrip img{height:auto;aspect-ratio:16/9}.flow{gap:5px}.flow span{width:auto;flex:1;min-width:84px}.flow i{display:none}
}
@media(max-width:430px){.wrap{width:calc(100% - 24px)}.homehero-v06{padding-top:22px}.hero-copy-v06 .abe-mark{width:104px}.hero-copy-v06 h1{font-size:38px}.project{grid-template-columns:40% 60%;min-height:132px}.project img{min-height:132px}.project p{font-size:11px}.timeline{grid-template-columns:1fr 1fr}.section h2{font-size:25px}.engineering-intro-v06 h2{font-size:24px}}