:root{--bg:#f3f0e9;--paper:#faf8f2;--ink:#171717;--muted:#6f6b63;--line:#d8d2c6;--accent:#ff5a36;--dark:#171717;--serif:Georgia,"Times New Roman",serif;--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6}a{color:inherit;text-decoration:none}.container{width:min(1160px,calc(100% - 40px));margin:auto}.site-header{height:76px;border-bottom:1px solid var(--line);background:rgba(243,240,233,.92);backdrop-filter:blur(12px);position:sticky;top:0;z-index:10}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;gap:11px;align-items:center;font-size:12px;font-weight:800;letter-spacing:.08em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:var(--bg);font-size:10px}.muted{color:#928e85;font-weight:500}nav{display:flex;gap:27px;font-size:13px;font-weight:650}nav a{padding:27px 0;border-bottom:2px solid transparent}nav a:hover,nav .active{border-color:var(--accent)}.menu-btn{display:none;background:none;border:0;font-size:25px}
.hero{min-height:690px;display:grid;align-items:center;border-bottom:1px solid var(--line);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}.eyebrow{font-size:11px;letter-spacing:.18em;font-weight:800;color:var(--accent);margin:0 0 16px}.hero h1,.page-hero h1{font-size:clamp(48px,7vw,88px);line-height:.94;letter-spacing:-.055em;margin:0 0 28px;font-weight:750}.hero h1 em,.page-hero h1 em{font-family:var(--serif);font-weight:400}.lead{font-size:18px;max-width:650px;color:#56524b}.actions{display:flex;gap:12px;margin-top:34px}.btn{padding:13px 19px;border:1px solid var(--ink);font-size:13px;font-weight:700}.btn.primary{background:var(--ink);color:var(--paper)}.btn.ghost:hover{background:#fff}.hero-art{height:470px;position:relative;display:grid;place-items:center}.chip{width:210px;height:210px;border:1px solid #918b80;background:linear-gradient(135deg,#eee9dd,#d7d0c1);box-shadow:20px 20px 0 #d3cdbf;display:grid;place-items:center;position:relative;z-index:2}.chip:before,.chip:after{content:"";position:absolute;inset:20px;border:1px dashed #9d978b}.chip span{font-family:var(--serif);font-size:80px}.chip small{position:absolute;bottom:32px;letter-spacing:.25em;font-size:9px}.orbit{position:absolute;border:1px solid #b9b2a6;border-radius:50%;width:420px;height:170px;transform:rotate(-28deg)}.o2{width:360px;height:430px;transform:rotate(30deg)}.year-tag{position:absolute;font-size:10px;letter-spacing:.12em;background:var(--paper);border:1px solid var(--line);padding:7px 10px}.y1{top:80px;left:8%}.y2{right:5%;top:48%}.y3{bottom:55px;left:27%}
.section{padding:100px 0}.section-head{display:grid;grid-template-columns:1fr 1fr;gap:80px;margin-bottom:45px}.section h2,.dark-section h2{font-size:44px;line-height:1.05;letter-spacing:-.04em;margin:0}.section-head>p{color:var(--muted);max-width:470px}.era-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.era-card{min-height:240px;padding:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:.2s}.era-card:hover{background:var(--paper);transform:translateY(-3px)}.era-card span,.era-card b{font-size:10px;color:var(--accent);letter-spacing:.14em}.era-card h3{font-size:25px;margin:35px 0 8px}.era-card p{color:var(--muted);font-size:14px}.era-card b{display:block;margin-top:28px;color:#8b867d}
.dark-section{background:var(--dark);color:#eeeae1;padding:90px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:80px}.dark-section p{color:#b9b5ac}.text-link{display:inline-block;margin-top:18px;color:#fff;border-bottom:1px solid var(--accent);padding-bottom:4px}.quote{max-width:900px}.quote>span{font-family:var(--serif);font-size:80px;color:var(--accent);line-height:.5}.quote blockquote{font-family:var(--serif);font-size:38px;line-height:1.2;margin:20px 0}.quote p{color:var(--muted);font-size:12px}
.page-hero{padding:115px 0 90px;border-bottom:1px solid var(--line)}.page-hero p:last-child{max-width:650px;color:var(--muted);font-size:17px}.timeline{position:relative;max-width:900px}.timeline:before{content:"";position:absolute;left:128px;top:0;bottom:0;width:1px;background:var(--line)}.event{display:grid;grid-template-columns:190px 1fr;gap:55px;padding:55px 0;border-bottom:1px solid var(--line)}.event:last-child{border-bottom:0}.date{font-family:var(--serif);font-size:25px;text-align:right;padding-right:35px}.event h2{font-size:31px;margin:9px 0}.event p{color:var(--muted);margin:0 0 20px}.event-tag{font-size:9px;letter-spacing:.17em;color:var(--accent);font-weight:800}.mini-card{display:grid;grid-template-columns:110px 1fr;gap:20px;border-left:2px solid var(--accent);padding:13px 18px;background:var(--paper);font-size:13px}.mini-card span{color:var(--muted)}
.people-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.person{background:var(--paper);border:1px solid var(--line);padding:28px;display:grid;grid-template-columns:92px 1fr;gap:22px}.portrait{width:92px;height:92px;display:grid;place-items:center;background:#d9d3c6;font-family:var(--serif);font-size:22px}.person>div:nth-child(2)>span{font-size:10px;color:var(--accent);letter-spacing:.12em}.person h2{font-size:24px;margin:5px 0}.person p{font-size:13px;color:var(--muted)}.person a{font-size:12px;border-bottom:1px solid var(--accent)}
.machine-list{display:grid;gap:22px}.machine{display:grid;grid-template-columns:330px 1fr;min-height:280px;border:1px solid var(--line);background:var(--paper)}.machine-visual{background:#ded8cb;display:grid;place-items:center;position:relative;overflow:hidden}.machine-visual small{position:absolute;bottom:15px;left:18px;font-size:10px;letter-spacing:.12em}.gear{width:130px;height:130px;border:28px dotted var(--ink);border-radius:50%}.cards{width:130px;height:170px;border:2px solid var(--ink);transform:rotate(-7deg);box-shadow:35px 18px 0 -2px #ded8cb,35px 18px 0 0 var(--ink)}.vacuum{width:210px;height:110px;border:3px solid var(--ink);border-radius:50% 50% 12px 12px}.transistor{width:100px;height:130px;border:3px solid var(--ink);position:relative}.transistor:before,.transistor:after{content:"";position:absolute;width:3px;height:170px;background:var(--ink);top:-22px}.transistor:before{left:-32px}.transistor:after{right:-32px}.micro{width:150px;height:150px;border:18px solid var(--ink);outline:2px dashed #ded8cb;outline-offset:-35px}.machine>div:last-child{padding:45px}.machine h2{font-size:34px;margin:10px 0}.machine p{color:var(--muted)}
.concept-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}.concept{background:var(--paper);min-height:300px;padding:35px}.concept .num{font-size:11px;color:var(--accent);font-weight:800;letter-spacing:.15em}.concept h2{font-size:29px;margin:35px 0 12px}.concept p{color:var(--muted);font-size:14px}.concept code{display:block;margin-top:25px;padding:10px;background:#e9e4d9;font-size:12px;overflow:auto}
.source-list{max-width:900px}.source{display:grid;grid-template-columns:80px 1fr 25px;gap:25px;align-items:center;padding:27px 0;border-bottom:1px solid var(--line)}.source>span{font-weight:800;color:var(--accent);font-size:12px}.source h2{font-size:22px;margin:0}.source p{font-size:13px;color:var(--muted);margin:4px 0 0}.source>b{font-size:20px}.source:hover h2{color:var(--accent)}.note{border-top:1px solid var(--line)}.note p{max-width:750px;color:var(--muted)}
footer{background:#e4dfd4;border-top:1px solid var(--line);padding:50px 0 25px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.footer-grid b{font-size:11px;letter-spacing:.12em}.footer-grid p{font-size:12px;color:var(--muted);max-width:300px}.footer-grid div:not(:first-child){display:flex;flex-direction:column;gap:7px;font-size:12px}.footer-grid a:hover{color:var(--accent)}.copyright{margin-top:40px;padding-top:15px;border-top:1px solid var(--line);font-size:10px;color:#8b867d}

@media(max-width:800px){.container{width:min(100% - 28px,1160px)}nav{display:none;position:absolute;top:76px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:15px 20px;flex-direction:column;gap:0}nav.open{display:flex}nav a{padding:10px 0}.menu-btn{display:block}.hero{min-height:auto;padding:80px 0}.hero-grid,.section-head,.split{grid-template-columns:1fr;gap:35px}.hero-art{height:330px}.hero h1,.page-hero h1{font-size:52px}.section{padding:70px 0}.era-grid,.people-grid,.concept-grid{grid-template-columns:1fr}.timeline:before{display:none}.event{grid-template-columns:1fr;gap:12px;padding:40px 0}.date{text-align:left;padding:0}.machine{grid-template-columns:1fr}.machine-visual{min-height:230px}.machine>div:last-child{padding:30px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}