:root{--ink:#161616;--muted:#626262;--line:#d6d6d6;--surface:#f5f5f5}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font:16px/1.65 Arial,Helvetica,sans-serif}a{color:inherit;text-underline-offset:5px}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #555;outline-offset:5px}.skip{position:absolute;top:-60px;left:20px;background:#111;color:#fff;z-index:20;padding:10px}.skip:focus{top:10px}header{height:88px;padding:0 5%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{font-family:'Comic Sans MS','Chalkboard SE',cursive;font-weight:700;font-size:29px;text-decoration:none}nav{display:flex;gap:32px;font-size:14px}nav a{text-decoration:none}nav a[aria-current]{text-decoration:underline;text-decoration-thickness:2px}.wrap{max-width:1260px;margin:0 auto;padding:34px 42px 64px}.crumb{font-size:13px;color:var(--muted);margin:0 0 34px}.crumb a{text-decoration:none}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center;padding-bottom:48px}.hero h1{font-size:clamp(38px,4.55vw,68px);line-height:1.05;letter-spacing:-2.6px;margin:0 0 26px}.lead{font-size:20px;line-height:1.5;max-width:620px}.meta{font-size:14px;color:var(--muted);margin:25px 0}.actions{display:flex;gap:24px;align-items:center;flex-wrap:wrap}.button{border:1px solid #111;background:#111;color:#fff;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:16px;padding:13px 21px;border-radius:2px;font-weight:600;font-size:14px;line-height:1.6}.button:hover{background:#333}.button.secondary{color:#111;background:#fff;border-color:#aaa}.text-link{font-size:14px;background:none;border:0;border-bottom:1px solid #111;padding:0 0 3px;text-decoration:none}.cover{background:var(--surface);padding:30px 36px 32px;min-height:350px;display:flex;flex-direction:column;justify-content:center}.cover-number{font:100px/1 Georgia,serif;letter-spacing:-7px;margin-bottom:20px}.cover-row{display:flex;gap:30px;padding:9px 0;border-bottom:1px solid #888;font-size:15px}.section{border-top:1px solid var(--line);padding:28px 0}.section h2{font-size:30px;letter-spacing:-.8px;line-height:1.2;margin:0 0 22px}details{border-bottom:1px solid var(--line)}summary{display:flex;align-items:center;gap:28px;padding:20px 0;cursor:pointer;list-style:none;font-size:18px}summary::-webkit-details-marker{display:none}summary:after{content:'+';margin-left:auto;font-size:23px;font-weight:400}details[open]>summary:after{content:'−'}.num{color:var(--muted);font-size:15px}.module-content{padding:0 0 22px 50px;color:var(--muted)}.module-content a{display:block;color:var(--ink);padding:8px 0;font-size:15px}.split{display:grid;grid-template-columns:1fr 1.4fr;gap:40px}.split p{margin-top:0}.footer{border-top:1px solid var(--line);padding-top:25px;font-size:12px;display:flex;justify-content:space-between;gap:24px;color:var(--muted)}.notice{font-size:13px;color:var(--muted)}.catalog-title{font-size:62px;line-height:1.1;letter-spacing:-2px;margin:30px 0 20px}.catalog-course{display:grid;grid-template-columns:320px 1fr;gap:54px;padding:40px 0;border-top:1px solid var(--line);margin-top:48px}.catalog-course h2{font-size:38px;line-height:1.15;letter-spacing:-1px;margin:12px 0 20px}.catalog-course .cover{min-height:290px}.catalog-course .cover-number{font-size:78px}.tagline{font-size:13px;color:var(--muted)}
.reader-layout{display:grid;grid-template-columns:290px minmax(0,1fr);max-width:1440px;margin:auto}.sidebar{padding:30px 26px;border-right:1px solid var(--line);align-self:start;position:sticky;top:0;max-height:100vh;overflow:auto}.sidebar h2{font-size:19px;margin:0 0 20px}.progress-label{font-size:13px;color:var(--muted);margin:6px 0 15px}progress{display:block;width:100%;height:7px;border:0;border-radius:0;background:#e8e8e8;appearance:none}progress::-webkit-progress-bar{background:#e8e8e8}progress::-webkit-progress-value{background:#111}progress::-moz-progress-bar{background:#111}.sidebar summary{font-size:14px;font-weight:600;gap:9px;padding:18px 0}.sidebar summary:after{font-size:18px}.lesson-nav a{display:flex;align-items:start;gap:10px;text-decoration:none;font-size:13px;line-height:1.5;padding:10px 9px;margin:2px 0}.lesson-nav a[aria-current]{background:#eee;font-weight:600}.lesson-nav .status{font-size:12px;min-width:13px}.sidebar-bottom{display:grid;gap:14px;margin-top:26px;font-size:14px}.sidebar-bottom a{text-decoration:none}.reading{width:100%;max-width:920px;padding:36px 56px 70px;min-width:0}.reading h1{font-size:44px;line-height:1.12;letter-spacing:-1.4px;margin:0 0 28px}.reading h2{font-size:24px;line-height:1.3;letter-spacing:-.4px;margin:34px 0 10px}.reading p{margin:0 0 19px}.reading .crumb{margin-bottom:26px}.reading .meta{font-size:12px;margin-bottom:12px}.goal{font-size:17px;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:30px}.goal strong{display:block;margin-bottom:5px}.example{background:var(--surface);padding:24px 27px;margin:30px 0}.example h2{margin:0 0 10px;font-size:19px}.example p{margin:0}.takeaway{border-left:3px solid #111;padding-left:20px;margin:30px 0}.takeaway strong{display:block}.exercise{border-top:1px solid var(--line);padding-top:8px}.exercise label{display:block;font-size:14px;font-weight:600;margin:18px 0 7px}textarea{display:block;width:100%;min-height:160px;resize:vertical;border:1px solid #aaa;border-radius:2px;padding:14px;font-size:15px;line-height:1.6;background:#fff;color:#111}.saved{min-height:22px;font-size:12px;color:var(--muted);margin:8px 0 25px!important}.lesson-actions{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:25px;margin-top:30px}.mobile-menu{display:none}.quiz-question{border:0;border-top:1px solid var(--line);padding:24px 0;margin:0}.quiz-question legend{float:left;width:100%;font-weight:600;margin-bottom:16px}.quiz-question label{display:flex;gap:12px;align-items:flex-start;padding:12px;border:1px solid var(--line);margin:8px 0;clear:both;cursor:pointer;font-size:15px}.quiz-question input{margin-top:7px;accent-color:#111}.feedback{clear:both;background:var(--surface);padding:15px;margin:16px 0;font-size:14px}.quiz-result{border:1px solid #999;padding:22px;margin:25px 0}.quiz-result h2{margin-top:0}.workbook-entry{padding:22px 0;border-top:1px solid var(--line)}.workbook-entry h3{font-size:18px;margin:0 0 12px}.workbook-entry p{font-size:14px}.workbook-entry textarea{min-height:115px}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field label{display:block;font-size:13px;margin-bottom:6px}.field input,.field select{width:100%;border:1px solid #aaa;border-radius:2px;background:white;padding:10px;color:#111}.calc-result{background:var(--surface);padding:22px;margin:20px 0}.calc-result p{margin:5px 0}.resource-list{padding-left:20px}.resource-list li{margin:12px 0;font-size:15px}.glossary dt{font-weight:600;margin-top:20px}.glossary dd{margin:5px 0 18px;color:var(--muted)}.checklist label{display:flex;align-items:flex-start;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}.checklist input{margin-top:7px;accent-color:#111}.owner-panel{border:1px solid #aaa;padding:25px;margin:25px 0}.owner-panel h2{margin:0 0 16px}.owner-preview{border-left:3px solid #111;padding:20px;margin:22px 0;background:var(--surface)}.error{color:#9b2525}.owner-tools{font-size:12px;color:var(--muted)}.print-only{display:none}.completed-summary{padding:30px;background:var(--surface);margin-bottom:25px}.completed-summary h2{margin:0 0 12px}.source-note{font-size:12px;color:var(--muted);margin-top:28px!important}.hidden{display:none!important}@media(min-width:1500px){.hero h1{font-size:68px}}@media(max-width:1000px){.hero{gap:32px;grid-template-columns:1.2fr 1fr}.cover{padding:26px;min-height:320px}.cover-number{font-size:84px}.reader-layout{grid-template-columns:245px minmax(0,1fr)}.sidebar{padding:26px 20px}.reading{padding:32px}.reading h1{font-size:36px}.hero h1{font-size:46px;letter-spacing:-1.8px}.catalog-course{grid-template-columns:260px 1fr;gap:32px}}@media(max-width:720px){header{height:76px;padding:0 20px}.brand{font-size:23px}nav{gap:19px;font-size:12px}.wrap{padding:25px 22px 45px}.crumb{margin-bottom:26px}.hero{grid-template-columns:1fr;gap:28px;padding-bottom:30px}.hero h1{font-size:43px;letter-spacing:-1.6px}.lead{font-size:18px}.cover{min-height:0;padding:24px}.cover-number{font-size:76px}.cover-row{font-size:14px;padding:7px 0}.actions{gap:18px}.section{padding:26px 0}.section h2{font-size:26px}.split{grid-template-columns:1fr;gap:3px}summary{font-size:16px;gap:16px}.module-content{padding-left:33px}.footer{flex-direction:column;gap:6px}.catalog-title{font-size:45px}.catalog-course{grid-template-columns:1fr;gap:24px;margin-top:30px;padding-top:25px}.catalog-course .cover{display:none}.catalog-course h2{font-size:33px}.reader-layout{display:block}.sidebar{display:none;position:static;border-right:0;border-bottom:1px solid var(--line);max-height:none}.sidebar.open{display:block}.mobile-menu{display:block;background:#f5f5f5;padding:12px 22px;border-bottom:1px solid var(--line)}.mobile-menu button{background:none;border:0;padding:0;font-size:14px;display:flex;align-items:center;gap:12px}.reading{padding:25px 22px 45px;max-width:none}.reading h1{font-size:35px;letter-spacing:-1px}.reading h2{font-size:23px}.reading .crumb{font-size:12px}.example{padding:22px}.tool-grid{grid-template-columns:1fr}.lesson-actions{align-items:stretch;gap:18px}.lesson-actions .button{width:100%}.owner-panel{padding:20px}.goal{font-size:16px}}@media print{header,.sidebar,.mobile-menu,.skip,.footer,.actions,.lesson-actions,.owner-tools,button{display:none!important}.wrap,.reading{max-width:none;padding:0}.reader-layout{display:block}.print-only{display:block}body{font-size:11pt}.reading h1{font-size:25pt}.workbook-entry{break-inside:avoid}textarea{border:1px solid #bbb;min-height:80px}.cover{display:none}a{text-decoration:none}.resource-list a{overflow-wrap:anywhere}}
