:root{--bg:#f6f1e7;--paper:#fffdf8;--ink:#111923;--muted:#596675;--line:#d8cfbd;--navy:#0d1724;--blue:#176b87;--green:#356a54;--amber:#9a6418;--red:#934a42;--soft:#ece3d3;--w:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}a{color:inherit;text-decoration:none}.wrap{width:min(calc(100% - 40px),var(--w));margin:0 auto}.mono{font-family:"JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase}
header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(17,25,35,.12);background:rgba(246,241,231,.94);backdrop-filter:blur(14px)}.nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.03em;white-space:nowrap}.mark{width:12px;height:12px;border-radius:50%;background:var(--blue);box-shadow:15px 0 0 var(--amber),30px 0 0 var(--green);margin-right:30px}nav{display:flex;align-items:center;justify-content:flex-end;gap:3px;flex-wrap:wrap}nav a{color:var(--muted);font-size:.9rem;font-weight:800;padding:9px 10px;border-radius:8px}nav a:hover,nav a:focus-visible,nav a.active{color:var(--ink);background:rgba(17,25,35,.06);outline:none}
.hero{padding:64px 0 34px}.eyebrow{color:var(--blue);font-weight:900;font-size:.74rem;margin-bottom:16px}h1{margin:0 0 18px;font-size:clamp(2.4rem,6vw,4.8rem);line-height:.96;letter-spacing:-.06em;max-width:860px}h2{margin:0 0 14px;font-size:clamp(1.8rem,4vw,3rem);line-height:1;letter-spacing:-.052em}h3{margin:0 0 8px;font-size:1.05rem;letter-spacing:-.01em}p{margin:0;color:var(--muted)}.lead{max-width:760px;color:#314255;font-size:clamp(1.04rem,2vw,1.22rem)}
section{padding:58px 0}.section-head{max-width:780px;margin-bottom:26px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.card{border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:22px;min-height:160px}.tag{display:inline-flex;align-items:center;margin-bottom:13px;border-radius:999px;background:var(--soft);color:#435263;padding:5px 8px;font-size:.68rem;font-weight:900}.dark{background:var(--navy);color:var(--paper)}.dark p,.dark li{color:#c0cad7}.dark .card{background:#121f31;border-color:rgba(255,255,255,.15)}.dark .tag{background:rgba(255,255,255,.09);color:#b9e6ef}.row{display:grid;grid-template-columns:190px 1fr;gap:16px;border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:18px}.row strong{display:block;margin-bottom:4px}.stack{display:grid;gap:12px}.wide{width:100%;overflow-x:auto}.diagram{min-width:980px;width:min(1280px,calc(100vw - 40px));margin:0 auto;border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:18px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:8px;border:1px solid var(--navy);background:var(--navy);color:var(--paper);font-weight:900}.btn.secondary{background:transparent;color:var(--navy);border-color:rgba(17,25,35,.3)}
footer{padding:34px 0;background:var(--navy);color:#c0cad7;font-size:.88rem}footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
@media(max-width:920px){.grid3,.grid2{grid-template-columns:1fr 1fr}.row{grid-template-columns:1fr}}@media(max-width:640px){.wrap{width:min(calc(100% - 28px),var(--w))}.nav{align-items:flex-start;flex-direction:column;padding:12px 0}.grid3,.grid2{grid-template-columns:1fr}section{padding:46px 0}}