:root{--ink:#203b48;--muted:#536a76;--paper:#f8fafb;--surface:#fff;--blue:#e5eef3;--accent:#ecd184;--line:#c8d6dd;--danger:#a02c2c;--success:#255e47;--radius:12px;--display:'Bahnschrift','Arial Narrow','Segoe UI',sans-serif;--body:'Segoe UI',Arial,sans-serif;--mono:Consolas,'Courier New',monospace;--page:1180px;scrollbar-color:#8197a2 var(--blue);scrollbar-width:thin}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--body)}a{color:inherit;text-underline-offset:4px;cursor:pointer}a:hover{color:#426b80}button,select,summary{cursor:pointer}button,input,select{font:inherit}button:disabled{cursor:default;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #357798;outline-offset:4px}button:active,.button:active{transform:translateY(1px)}::selection{background:var(--accent)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#8197a2;border:2px solid var(--blue);border-radius:8px}::-webkit-scrollbar-thumb:hover{background:var(--muted)}::-webkit-scrollbar-thumb:active{background:var(--ink)}::-webkit-scrollbar-track{background:var(--blue)}
.wrap{max-width:var(--page);margin:auto;padding:0 28px}.skip{position:absolute;left:12px;top:-80px;z-index:20;background:var(--accent);padding:12px}.skip:focus{top:12px}.preview{padding:7px 20px;background:var(--accent);text-align:center;font-size:12px;color:var(--ink)}header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:91px}.brand{display:flex;align-items:center;gap:10px;font:600 24px/1.1 var(--display);text-decoration:none;letter-spacing:-.7px;white-space:nowrap}.brand svg{width:32px;height:38px}.brand small{display:block;font:10px/1.4 var(--mono);text-transform:uppercase;letter-spacing:2px;margin-top:6px}.nav{display:flex;align-items:center;gap:27px;flex-wrap:wrap;font-size:14px;font-weight:600}.nav a{text-decoration:none;padding:10px 0}.nav a[aria-current=page]{box-shadow:0 2px var(--ink)}.eyebrow{font:12px/1.5 var(--mono);letter-spacing:1.4px;text-transform:uppercase;color:var(--muted)}.hero{display:grid;grid-template-columns:1fr 1.03fr;align-items:center;gap:38px;padding-top:65px;padding-bottom:72px}.hero h1{font:500 clamp(42px,5.3vw,68px)/1.03 var(--display);letter-spacing:-2px;margin:22px 0}.hero p{max-width:440px;color:var(--muted);font-size:18px}.button,button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:46px;padding:12px 20px;border:1px solid var(--ink);border-radius:6px;background:var(--ink);color:white;font-size:14px;font-weight:600;text-decoration:none;line-height:1.4}.button:hover,button:hover{background:#315566;color:white}.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.secondary:hover{background:var(--blue);color:var(--ink)}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:25px}.hero-note{font-size:12px!important;margin-top:21px}.draft{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--blue);box-shadow:10px 12px 0 #dae4e930}.draft-top{display:flex;justify-content:space-between;gap:12px;padding:15px 20px;font:11px var(--mono);border-bottom:1px solid var(--line)}.draft svg{display:block;width:100%;height:auto}.draft-bottom{padding:15px 20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;font-size:12px}.draft-bottom strong{font:600 18px var(--display)}.ruler{height:12px;background:repeating-linear-gradient(90deg,var(--line) 0,var(--line) 1px,transparent 1px,transparent 20px);border-top:1px solid var(--line)}.section{padding-top:50px;padding-bottom:55px;border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section h2,.section-head h2{font:500 35px/1.15 var(--display);letter-spacing:-.8px;margin:8px 0}.section-head p{margin:0;max-width:340px;color:var(--muted);font-size:15px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);display:flex;flex-direction:column}.card-art{background:var(--blue);height:190px;border-bottom:1px solid var(--line);padding:15px;display:flex;align-items:center;justify-content:center}.card-art svg{width:100%;height:100%}.card-body{padding:24px;display:flex;flex-direction:column;flex:1}.card h3{font:500 25px/1.2 var(--display);margin:7px 0 12px}.card p{font-size:14px;color:var(--muted);margin:0 0 22px}.card a{margin-top:auto;font-size:14px;font-weight:600}.card .eyebrow{font-size:10px}.feature-band{display:grid;grid-template-columns:1fr 1fr;gap:65px;background:var(--blue);border-radius:var(--radius);padding:44px;margin:25px 0 55px}.feature-band h2{font:500 38px/1.15 var(--display);margin:12px 0}.feature-band ol{padding-left:23px;margin:8px 0}.feature-band li{padding:8px 0;font-size:15px}.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}.guide-link{display:block;border-top:1px solid var(--line);padding:24px 0;text-decoration:none}.guide-link h3{font:500 24px/1.2 var(--display);margin:7px 0}.guide-link p{color:var(--muted);font-size:14px;margin:0}.guide-link:hover h3{text-decoration:underline}.page-head{padding:36px 0 30px;max-width:820px}.crumb{font-size:12px;color:var(--muted);margin-bottom:28px}.page-head h1{font:500 clamp(35px,4vw,52px)/1.08 var(--display);letter-spacing:-1.4px;margin:15px 0}.page-head>p{color:var(--muted);font-size:18px;max-width:730px}.tool-layout{display:grid;grid-template-columns:345px minmax(0,1fr);gap:26px;align-items:start;padding-bottom:55px}.controls{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:23px}.controls h2{font:500 24px var(--display);margin:0 0 15px}fieldset{border:0;margin:0;padding:0}legend{font-weight:600;font-size:14px;margin:18px 0 12px;padding:0}.units{display:flex;gap:8px;margin-bottom:20px}.units label{display:flex;gap:6px;align-items:center;background:var(--paper);padding:8px 12px;border:1px solid var(--line);border-radius:5px;font-size:13px;cursor:pointer}.units input{accent-color:var(--ink);width:16px;height:16px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin:0 0 12px;min-width:0}.field label{display:block;font-size:12px;font-weight:600;margin-bottom:5px}.input-wrap{position:relative}.input-wrap input{width:100%;height:43px;border:1px solid #aebfc8;border-radius:5px;padding:9px 37px 9px 10px;background:white;color:var(--ink);font-variant-numeric:tabular-nums;font-size:15px}.input-wrap span{position:absolute;right:10px;top:12px;font:11px var(--mono);color:var(--muted);pointer-events:none}.field input[aria-invalid=true]{border:2px solid var(--danger)}.field 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var(--line)}th{background:var(--blue);font-weight:600}td{font-variant-numeric:tabular-nums}.reading{display:grid;grid-template-columns:minmax(0,740px) 260px;gap:70px;padding:20px 0 70px}.prose{min-width:0}.prose h2{font:500 30px/1.2 var(--display);margin:38px 0 15px;letter-spacing:-.5px}.prose h3{font-size:19px;margin:28px 0 10px}.prose p,.prose li{font-size:16px}.prose p{margin:15px 0}.prose li{margin-bottom:8px}.prose .formula{padding:20px;background:var(--blue);border-radius:8px;font:14px/1.8 var(--mono);overflow-wrap:anywhere}.prose aside{padding:20px;background:var(--blue);border-radius:8px}.toc{font-size:13px;border-top:3px solid var(--ink);padding-top:18px}.toc strong{font:500 22px var(--display)}.toc ul{padding:0;list-style:none}.toc li{margin:15px 0}.toc .button{margin-top:20px}.meta{font-size:12px;color:var(--muted)}details{border-bottom:1px solid var(--line);padding:17px 0}summary{font-weight:600;font-size:15px}footer{background:var(--ink);color:#f5f8fa;padding:45px 0 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@media(max-width:950px){.header-inner{align-items:flex-start;padding-top:20px;padding-bottom:20px}.nav{gap:14px}.hero{gap:25px}.hero h1{font-size:49px}.tool-layout{grid-template-columns:300px minmax(0,1fr);gap:16px}.reading{gap:30px;grid-template-columns:minmax(0,1fr) 220px}.metric{padding:12px}.metric strong{font-size:20px}}
@media(max-width:720px){body{font-size:16px}.wrap{padding:0 20px}.header-inner{display:block}.brand{font-size:23px}.nav{margin-top:20px;gap:8px 20px;font-size:12px}.hero{grid-template-columns:1fr;padding-top:35px;padding-bottom:40px;gap:30px}.hero h1{font-size:49px;max-width:430px}.hero p{font-size:16px}.cards{grid-template-columns:1fr}.card{display:grid;grid-template-columns:35% 1fr}.card-art{height:auto;min-height:180px;border-bottom:0;border-right:1px solid var(--line);padding:8px}.card-body{padding:18px}.card h3{font-size:23px}.card p{font-size:13px}.section-head{display:block}.section-head p{margin-top:15px}.section h2{font-size:30px}.feature-band{grid-template-columns:1fr;padding:26px;gap:10px}.feature-band h2{font-size:31px}.guide-grid{grid-template-columns:1fr}.tool-layout{grid-template-columns:1fr}.controls{padding:20px}.reading{grid-template-columns:1fr;gap:20px}.toc{order:-1}.toc ul{display:flex;flex-wrap:wrap;gap:8px 18px}.toc li{margin:3px 0}.toc .button{margin:0}.page-head{padding-top:25px}.page-head h1{font-size:38px}.page-head>p{font-size:16px}.canvas svg{height:280px}.canvas{min-height:320px}.metrics{gap:8px}.metric{padding:11px}.metric strong{font-size:20px}.footer-top{display:block}.footer-links{margin-top:25px}.fine{display:block}.draft-bottom{font-size:11px}.draft-bottom strong{font-size:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(forced-colors:active){:root{scrollbar-color:auto}.button,button{border:1px solid ButtonText}.card,.metric,.canvas{border:1px solid CanvasText}}
@media print{header,footer,.preview,.controls,.output-actions,.reading,.page-head,.status,.result-copy,.skip,.ad-reserve{display:none!important}.wrap{max-width:100%;padding:0}.tool-layout{display:block}.canvas{background:white;break-inside:avoid}.canvas svg{height:340px}.metrics{break-inside:avoid}.print-heading{display:block;font:24px var(--display)}.table-wrap{overflow:visible;break-inside:auto}tr{break-inside:avoid}.warning{display:block}body{background:white;font-size:12px}.canvas-head{font-size:10px}}