:root{--ink:#101114;--paper:#f1efe8;--raised:#f8f7f2;--muted:#5f646d;--line:#cbc8be;--blue:#3977ff;--blue-dark:#1554df;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;--sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0}a{color:inherit}.skip{background:white;left:-999px;padding:12px;position:absolute;top:8px;z-index:100}.skip:focus{left:8px}.masthead{align-items:center;background:var(--ink);border-bottom:1px solid #2b2e34;color:white;display:flex;height:74px;justify-content:space-between;padding:0 4.5vw;position:sticky;top:0;z-index:30}.identity{align-items:center;display:flex;gap:12px;text-decoration:none}.identity>b{align-items:center;background:var(--blue);display:flex;font:850 16px var(--mono);height:39px;justify-content:center;width:39px}.identity strong,.identity small{display:block}.identity strong{font-size:15px}.identity small{color:#a4a9b2;font:10px var(--mono);letter-spacing:.08em;margin-top:4px;text-transform:uppercase}.masthead nav{display:flex;gap:30px}.masthead nav a,.mast-action{color:#b7bbc3;font-size:12px;font-weight:750;text-decoration:none;text-transform:uppercase}.masthead nav a:hover,.mast-action:hover{color:white}.mast-action{border-bottom:1px solid var(--blue);color:#b8ccff;padding-bottom:7px}
.hero{background:var(--ink);color:white;display:grid;grid-template-columns:.87fr 1.13fr;min-height:calc(100svh - 74px);overflow:hidden}.hero-copy{align-self:center;max-width:720px;padding:70px 3vw 70px 6vw}.hero-copy>p:first-child,.library-head>div>p,.method>div>p,.closing>p{color:#78a2ff;font:750 11px var(--mono);letter-spacing:.12em;text-transform:uppercase}.hero h1{font-size:clamp(58px,7vw,110px);font-weight:720;letter-spacing:-.075em;line-height:.86;margin:27px 0 35px}.hero h1 span{color:#fff}.hero h1 br+*{font-weight:280}.lede{color:#b9bdc5;font-size:16px;line-height:1.75;max-width:570px}.hero-action{display:inline-flex;font-size:12px;font-weight:800;gap:55px;margin-top:30px;padding:15px 0;text-decoration:none;text-transform:uppercase}.hero-action i{color:var(--blue);font-style:normal}.shelf-visual{align-self:stretch;background:#181a1f;border-left:1px solid #30333a;display:grid;grid-template-rows:auto 1fr auto;margin:32px 3vw 32px 0;min-height:600px;padding:26px 28px}.shelf-label,.shelf-rule{color:#a2a7b0;display:flex;font:10px var(--mono);justify-content:space-between;letter-spacing:.08em}.spines{align-items:end;border-bottom:5px solid #333740;display:flex;gap:8px;justify-content:center;padding:45px 1vw 0}.spines span{animation:spine-in .65s both;animation-delay:calc(var(--i)*55ms);background:#202329;border:1px solid #3a3e47;border-bottom:0;display:flex;flex-direction:column;height:var(--h);justify-content:space-between;max-width:60px;padding:16px 10px 13px;transform-origin:bottom;width:9%}.spines span:nth-child(9){background:var(--blue);border-color:#78a2ff;color:white}.spines b{font:700 10px var(--mono);letter-spacing:.08em;writing-mode:vertical-rl}.spines small{color:#a4a9b3;font:9px var(--mono)}.spines span:nth-child(9) small{color:#d9e4ff}.shelf-rule{padding-top:14px}
.library{padding:105px 5.5vw}.library-head{align-items:end;display:grid;gap:8vw;grid-template-columns:1fr .72fr}.library-head h2{font-size:clamp(48px,6.5vw,92px);letter-spacing:-.07em;line-height:.9;margin:17px 0 0}.search{display:block;position:relative}.search span{color:var(--muted);display:block;font-size:12px;font-weight:700;margin-bottom:10px}.search input{background:transparent;border:0;border-bottom:1px solid #939187;border-radius:0;font:16px var(--sans);outline:0;padding:12px 38px 12px 0;width:100%}.search input:focus{border-color:var(--blue);box-shadow:0 2px 0 -1px var(--blue)}kbd{background:#e5e2d9;border:1px solid #c7c3b9;border-radius:3px;font:10px var(--mono);padding:3px 5px}.search kbd{position:absolute;right:0;top:32px}.library-tools{align-items:center;display:flex;justify-content:space-between;margin:60px 0 20px}.filters{display:flex;gap:22px}.filters button{background:transparent;border:0;border-bottom:1px solid transparent;color:var(--muted);cursor:pointer;font:750 12px var(--sans);padding:9px 0;text-transform:uppercase}.filters button.active,.filters button:hover{border-color:var(--blue);color:var(--ink)}.library-tools>p{color:var(--muted);font:11px var(--mono);text-transform:uppercase}.library-tools strong{color:var(--ink)}.list-head,.book-row{display:grid;grid-template-columns:55px minmax(190px,.72fr) minmax(240px,.95fr) minmax(380px,1.65fr)}.list-head{border-bottom:1px solid var(--ink);color:#737780;font:10px var(--mono);letter-spacing:.1em;padding:13px 0;text-transform:uppercase}.library-list{border-bottom:1px solid var(--ink)}.book-row{border-bottom:1px solid var(--line);min-height:210px;opacity:.12;padding:31px 0;transform:translateY(12px);transition:background .25s,opacity .45s,transform .45s}.book-row.is-visible{opacity:1;transform:none}.book-row:hover{background:var(--raised)}.book-row:hover .book-number{color:var(--blue)}.book-number{color:#7d8189;font:700 12px var(--mono);padding-top:7px;transition:color .2s}.book-title{padding-right:24px}.book-title>span{color:var(--blue-dark);font:750 10px var(--mono);letter-spacing:.09em;text-transform:uppercase}.book-title h3{font-size:clamp(25px,2.4vw,38px);letter-spacing:-.045em;line-height:1.05;margin:12px 0}.book-title h3 a{text-decoration:none}.book-row>p{color:var(--muted);font-size:14px;line-height:1.6;margin:3px 35px 0 0}.resources{align-content:start;display:flex;flex-wrap:wrap;gap:0}.resources a{align-items:center;border-bottom:1px solid var(--line);display:flex;font-size:12px;font-weight:700;justify-content:space-between;line-height:1.25;min-height:48px;min-width:31%;padding:11px 12px;text-decoration:none;transition:background .15s,color .15s}.resources a i{color:#777c85;font-style:normal;margin-left:15px;transition:transform .15s}.resources a:hover,.resources .primary-link{background:var(--ink);color:white}.resources a:hover i{color:#78a2ff;transform:translate(2px,-2px)}.empty{border-bottom:1px solid var(--ink);color:var(--muted);font-size:14px;padding:70px 0}.noscript-list{line-height:2}
.method{background:var(--ink);color:white;display:grid;gap:9vw;grid-template-columns:.8fr 1.2fr;padding:100px 7vw}.method h2{font-size:clamp(48px,6.5vw,90px);letter-spacing:-.07em;line-height:.91;margin:20px 0}.method ol{list-style:none;margin:0;padding:0}.method li{align-items:center;border-top:1px solid #34373e;display:grid;grid-template-columns:50px 1fr;padding:22px 0}.method li:last-child{border-bottom:1px solid #34373e}.method li>b{color:#78a2ff;font:700 13px var(--mono)}.method strong,.method small{display:block}.method strong{font-size:18px}.method small{color:#a8adb6;font-size:13px;margin-top:6px}.closing{background:var(--blue);padding:100px 7vw}.closing>p{color:#0d337e}.closing h2{font-size:clamp(55px,8vw,116px);letter-spacing:-.075em;line-height:.86;margin:24px 0 50px}.closing a{border-bottom:1px solid #164aa9;font-size:12px;font-weight:800;padding-bottom:8px;text-decoration:none;text-transform:uppercase}.closing a span{margin-left:30px}footer{align-items:center;background:var(--ink);color:#a5a9b1;display:flex;font:10px var(--mono);justify-content:space-between;padding:25px 5vw;text-transform:uppercase}footer a{color:#b8ccff;text-decoration:none}
@keyframes spine-in{from{opacity:0;transform:scaleY(.15)}}@media(max-width:1050px){.hero{grid-template-columns:1fr}.hero-copy{padding-bottom:30px}.shelf-visual{height:620px;margin:0 5vw 55px}.library-head{grid-template-columns:1fr}.list-head{display:none}.book-row{grid-template-columns:45px .7fr 1.3fr}.resources{grid-column:2/-1;margin-top:22px}.method{grid-template-columns:1fr}}@media(max-width:680px){.masthead{height:66px;padding:0 18px}.masthead nav,.mast-action{display:none}.hero{min-height:auto}.hero-copy{padding:60px 20px 35px}.hero h1{font-size:54px}.shelf-visual{height:430px;margin:0 20px 40px;min-height:0;padding:18px 15px}.spines{gap:4px;padding-top:30px}.spines span{padding:10px 5px}.library{padding:75px 20px}.library-head h2{font-size:52px}.library-tools{align-items:flex-start;display:block;margin-top:40px}.filters{gap:14px;overflow-x:auto;padding-bottom:8px}.filters button{flex:0 0 auto}.library-tools>p{margin-top:20px}.book-row{display:grid;grid-template-columns:38px 1fr;padding:25px 0}.book-title{padding-right:0}.book-row>p,.resources{grid-column:2}.book-row>p{margin:10px 0 18px}.resources a{min-width:50%}.method{padding:80px 20px}.closing{padding:80px 20px}footer{align-items:flex-start;flex-direction:column;gap:12px;padding:25px 20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.spines span,.book-row{animation:none;opacity:1;transform:none;transition:none}}
.resources a{min-height:44px}