:root{--ink:#171924;--blue:#2250f1;--orange:#ff763b;--pink:#f5a2c4;--paper:#f8f3e8;--line:#c4c1bb;--white:#fff;--muted:#555663}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.65}a{color:inherit;text-underline-offset:5px}a:hover{text-decoration-thickness:3px}button,input,select,textarea{font:inherit}button,.btn{cursor:pointer}button:disabled{cursor:default;opacity:.55}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0 0 1rem}h1,h2,h3{line-height:1.05;letter-spacing:-.045em}h1{font-size:clamp(2.8rem,7.3vw,6.7rem);max-width:1050px}h2{font-size:clamp(2rem,4vw,3.7rem)}h3{font-size:1.55rem}[hidden]{display:none!important}.wrap{width:min(1200px,calc(100% - 48px));margin:auto}.skip{position:absolute;top:-80px;left:12px;z-index:20;background:white;padding:12px}.skip:focus{top:10px}:focus-visible{outline:3px solid var(--blue);outline-offset:5px}header{border-bottom:2px solid var(--ink);background:var(--paper)}.header{display:flex;align-items:center;justify-content:space-between;min-height:92px;gap:20px}.logo{font-weight:900;font-size:2rem;letter-spacing:-.07em;text-decoration:none;white-space:nowrap}.logo span{color:var(--blue)}nav{display:flex;gap:26px;align-items:center}nav a{font-size:.93rem;font-weight:700;text-decoration:none}nav a[aria-current]{text-decoration:underline}.menu{display:none;padding:7px 14px;border:2px solid var(--ink);background:transparent}.eyebrow,.mono{font-family:'Courier New',monospace;font-size:.78rem;letter-spacing:.07em;font-weight:bold;text-transform:uppercase}.hero{display:grid;grid-template-columns:1.06fr 1fr;gap:38px;align-items:center;padding:58px 0 68px}.hero h1{font-size:clamp(3.7rem,7.1vw,6rem);line-height:.9;letter-spacing:-.075em}.hero h1 em{font-style:normal;color:var(--blue)}.deck{font-size:1.17rem;max-width:680px;line-height:1.6}.hero .deck{margin-top:24px}.hero-art{border:2px solid var(--ink);box-shadow:9px 9px 0 var(--ink);width:100%}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.btn{display:inline-block;text-decoration:none;padding:13px 21px;background:var(--ink);color:white;border:2px solid var(--ink);font-weight:bold;font-size:.94rem;line-height:1.35;min-height:48px}.btn:hover{background:var(--blue);border-color:var(--blue);color:#fff}.btn.light{background:transparent;color:var(--ink)}.btn.light:hover{background:var(--pink)}.ribbon{background:var(--orange);border-block:2px solid var(--ink);padding:14px 0}.ribbon .wrap{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}.section{padding:72px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}.section-head h2{max-width:750px;margin-bottom:0}.section-head a{white-space:nowrap}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.card{border:1px solid var(--ink);background:white;display:flex;flex-direction:column;position:relative}.card .art{background:var(--pink);padding:20px;text-align:center;border-bottom:1px solid var(--ink)}.card:nth-child(3n+2) .art{background:#ffb48c}.card:nth-child(3n+3) .art{background:#c9d3ff}.card .art img{height:135px;width:155px}.card .inside{padding:25px;flex:1;display:flex;flex-direction:column}.card .inside a:last-child{margin-top:auto;padding-top:12px;font-weight:700}.card p{font-size:.96rem}.card h3 a{text-decoration:none}.card:hover h3 a{text-decoration:underline}.fine{font-size:.82rem;color:var(--muted)}.blue{background:var(--blue);color:white}.blue .btn{background:var(--orange);color:var(--ink)}.blue :focus-visible{outline-color:var(--orange)}.lab-list{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid #809af7}.lab-item{padding:32px 22px;border-bottom:1px solid #809af7;display:grid;grid-template-columns:55px 1fr;gap:16px}.lab-item .number{font:24px 'Courier New',monospace;color:#ffba95}.lab-item h3{font-size:1.8rem}.lab-item a{text-decoration:none}.lab-item p{color:#edf0ff;margin:12px 0 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}.feature{background:var(--pink);padding:46px;border:2px solid var(--ink)}.feature h2{font-size:3rem}.intro{padding:55px 0 38px}.intro .deck{margin-top:23px}.breadcrumb{font:12px 'Courier New',monospace;margin-bottom:24px}.article-layout{display:grid;grid-template-columns:240px minmax(0,730px);gap:65px;padding-bottom:76px}.article-layout aside{padding-top:12px}.article-layout aside img{width:180px}.article-body{font-size:1.09rem}.article-body h2{font-size:2rem;line-height:1.17;margin-top:32px}.note{padding:24px;border-left:5px solid var(--blue);background:#fff;margin:25px 0}.note h2,.note h3{font-size:1.3rem;margin-top:0}.note ul{padding-left:20px}.tool{max-width:850px;margin:0 auto 76px;background:#fff;padding:35px;border:2px solid var(--ink);box-shadow:7px 7px 0 var(--pink)}.tool h2{font-size:2rem}.tool label{display:block;font-weight:700;margin:18px 0 7px}.tool input,.tool textarea,.tool select{width:100%;padding:12px;border:1px solid #676772;background:#fff;min-height:48px;border-radius:0}.tool textarea{min-height:92px;resize:vertical}.fields{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.result{padding:24px;background:var(--paper);margin:23px 0;min-height:75px;border:1px solid var(--line)}.result strong{font-size:1.5rem}.error{color:#a52031;font-weight:bold}.choices{display:grid;gap:12px;margin:24px 0}.choice{text-align:left;background:var(--paper);border:1px solid var(--ink);padding:16px}.choice:hover:enabled{background:var(--pink)}.choice.correct{border:3px solid #176d49}.choice.wrong{border:3px solid #a52031}.filterbar{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 28px}.filterbar button{padding:9px 17px;background:white;border:1px solid var(--ink)}.filterbar button[aria-pressed=true]{background:var(--ink);color:white}.product{display:grid;grid-template-columns:300px 1fr;gap:36px;border-top:2px solid var(--ink);padding:42px 0}.product .cover{width:240px;border:1px solid var(--line)}.preview{max-width:500px;width:100%;margin:20px 0;border:1px solid var(--line)}.price{font-size:1.8rem;font-weight:bold}.free{background:var(--pink);padding:35px;margin-bottom:36px;border:2px solid var(--ink)}.coming{display:inline-block;border:1px solid var(--ink);padding:12px 19px;background:var(--paper);font-weight:bold}.check-sheet{margin-top:35px;border-top:3px solid var(--ink);padding-top:25px}.check-sheet h2{font-size:2.1rem}.check-sheet h3{font-size:1.1rem;margin-top:22px}.check-sheet p{white-space:pre-wrap;overflow-wrap:anywhere;min-height:30px}.shelf-note{max-width:780px;margin-bottom:32px}.card.shop .inside .btn{padding:13px 16px;margin-top:20px}.card.shop h3{font-size:1.5rem}.card.shop .fine{margin-bottom:14px}.quick-table{width:100%;border-collapse:collapse;font-size:.92rem}.quick-table th,.quick-table td{padding:11px;border:1px solid var(--line);text-align:left}.body-copy{max-width:780px;padding-bottom:65px;font-size:1.06rem}.body-copy h2{font-size:2rem;margin-top:28px}.sources li{margin-bottom:18px}footer{background:var(--ink);color:#fff;padding:44px 0}.footer-top{display:grid;grid-template-columns:1fr 1fr;gap:35px}.footer-links{display:flex;justify-content:end;flex-wrap:wrap;gap:14px 22px;align-content:start}.disclosure{border-top:1px solid #686976;margin-top:27px;padding-top:24px;font-size:.8rem;line-height:1.65;color:#e4e4eb}.print-only{display:none}noscript p{padding:20px;background:#fff;border:1px solid var(--ink)}
@media(max-width:900px){nav{gap:16px}.hero{gap:28px}.hero h1{font-size:4.5rem}.grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:180px 1fr;gap:30px}.feature{padding:30px}.feature h2{font-size:2.4rem}}
@media(max-width:650px){.wrap{width:calc(100% - 32px)}.header{min-height:78px;flex-wrap:wrap;padding:14px 0;gap:12px}nav{width:100%;flex-wrap:wrap;gap:12px 25px;padding-bottom:10px}header.js .menu{display:block}header.js nav{display:none}header.js nav.open{display:flex}.hero{grid-template-columns:1fr;padding:40px 0 50px}.hero h1{font-size:clamp(3.4rem,14vw,5.7rem)}.hero-art{max-width:540px}.section{padding:45px 0}.grid,.split,.lab-list,.footer-top,.fields{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column;gap:16px}.article-layout{display:block}.article-layout aside{display:none}.article-body{font-size:1.04rem}.tool{padding:22px;margin-bottom:45px;box-shadow:4px 4px 0 var(--pink)}.product{grid-template-columns:1fr;gap:25px}.product .cover{width:200px}.intro{padding-top:36px}.footer-links{justify-content:start}.quick-table{font-size:.85rem}.lab-item{padding:25px 5px}.feature,.free{padding:25px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{body{background:white;color:black}header,footer,.intro,.no-print,.tool>p,.tool form,.tool>.actions{display:none!important}.wrap{width:100%}.tool{border:0;box-shadow:none;margin:0;padding:0;max-width:none}.check-sheet{border:0;margin:0;padding:0}.check-sheet h2{font-size:24pt}.check-sheet h3{break-after:avoid}.check-sheet p{font-size:11pt}.print-only{display:block}.check-sheet section{break-inside:avoid}a{color:black}@page{margin:18mm}}