@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');
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25px;max-width:700px;margin:auto}.loading .brand-symbol{color:var(--accent);background:var(--tint);margin-bottom:25px}.loading h1{font-size:32px}.loading p{margin-top:20px;color:var(--muted)}.reader-layout{max-width:1250px;margin:auto;display:grid;grid-template-columns:240px 1fr}.reader-nav{padding:30px 20px;border-right:1px solid var(--line);position:sticky;top:0;height:100vh;overflow:auto}.reader-nav select{margin:13px 0}.reader-nav .section-link{display:block;font-size:11px;line-height:1.6;color:var(--muted);padding:9px;border-radius:6px}.reader-nav .section-link.active{background:var(--tint);color:var(--accent)}.reader-main{padding:38px 5vw 70px;min-width:0}.reader-main h1{font-size:32px;margin:13px 0 20px}.reader-main .source-text{font-family:Georgia,serif;white-space:pre-wrap;background:#fff;border:1px solid var(--line);border-radius:10px;padding:30px;font-size:15px;line-height:1.9;overflow-wrap:anywhere;margin:25px 0}.reader-tools{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.reader-tools label{font-size:11px;color:var(--muted)}.reader-tools input{width:95px}.spec-main{max-width:900px;margin:auto;padding:50px 30px}.spec-main h1{font-size:46px;margin-bottom:20px}.spec-main h2{font-size:25px;margin:35px 0 15px}.spec-main p,.spec-main li{color:var(--muted);font-size:14px;line-height:1.9}.spec-main li{margin-bottom:9px}.spec-main strong{color:var(--ink)}
@media(min-width:1500px){.bench{padding-left:75px;padding-right:75px}}@media(max-width:1000px){.workspace{grid-template-columns:190px 1fr}.sidebar{padding-left:15px;padding-right:12px}.hero{gap:25px}.chapters{grid-template-columns:repeat(2,1fr)}.bench{padding-left:30px;padding-right:30px}.bench-top{align-items:flex-start;flex-direction:column}.pips{max-width:100%}.topbar{padding:0 25px}.reader-layout{grid-template-columns:200px 1fr}}@media(max-width:700px){body{font-size:14px}.topbar{height:69px;padding:0 18px;gap:8px}.brand-symbol{width:31px;height:31px;font-size:18px}.brand-name{font-size:10px;letter-spacing:1.3px}.brand-name small{font-size:8px;letter-spacing:1px}.brand{gap:9px}.top-links{gap:1px}.top-links a,.top-links button{padding:9px 7px;font-size:11px}.top-links .book-label{display:none}.home{padding:26px 22px 40px}.hero{grid-template-columns:1fr;gap:29px;padding-bottom:32px}.hero h1{font-size:45px;margin-top:12px}.hero-chart{padding:20px 22px 14px}.hero-chart svg{max-height:230px}.lede{font-size:14px}.hero .actions{margin-top:22px}.back-link{margin-bottom:25px}.chapters{grid-template-columns:1fr 1fr;gap:10px}.chapter-card{padding:17px 15px;min-height:220px}.chapter-card h3{font-size:18px}.chapter-card p{font-size:11px}.chapter-card .card-top{margin-bottom:17px}.chapter-icon{width:27px}.card-progress{font-size:9px}.book-summary{gap:10px 19px}.book-summary strong{font-size:17px}.book-summary .flex-end{margin-left:0}.book-footer{flex-direction:column;font-size:10px}.workspace{display:block}.sidebar{display:none}.bench{padding:20px 21px 45px}.mobile-nav{display:flex;justify-content:space-between;margin-bottom:22px}.mobile-nav button{font-size:11px;padding:0}.bench-top{gap:13px;margin-bottom:20px}.activity-title{font-size:31px;margin:16px 0}.prompt{font-size:16px;line-height:1.8}.term-chips{gap:6px;margin-bottom:19px}.term-chip{font-size:10px;padding:5px 9px}.choice{font-size:13px;padding:14px;gap:11px}.panel-content{padding:15px}.panel-head{padding:12px 15px;font-size:8px}.classify-row{grid-template-columns:1fr;gap:11px;padding:15px}.classify-row select{font-size:13px}.activity-actions{gap:6px}.activity-actions .primary{width:100%;padding:14px}.activity-actions .secondary{font-size:12px}.activity-actions .skip{margin-left:auto}.source-line{flex-direction:column;gap:8px}.source-line a{max-width:100%}.hint,.knowledge{font-size:13px;padding:15px 17px}.feedback{padding:18px}.feedback h3{font-size:17px}.feedback p{font-size:13px}.fit-controls{gap:17px}.lab-readout{gap:7px}.lab-readout span{padding:10px 12px;min-width:90px}.lab-readout b{font-size:18px}.sample-grid{gap:3px}.dialog-head{padding:18px 20px}.dialog-body{padding:20px}.dialog-head h2{font-size:21px}.compare-selects,.comparison{gap:15px}.comparison h3{font-size:18px}.comparison p{font-size:12px}.comparison .example{padding:11px}.reader-layout{display:block}.reader-nav{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:20px}.reader-nav .section-links{display:none}.reader-main{padding:26px 20px 45px}.reader-main h1{font-size:28px}.reader-main .source-text{font-size:13px;padding:18px}.reader-tools .secondary,.reader-tools .primary{font-size:11px;padding:9px 11px}.completion{margin:20px 0}.completion h1{font-size:35px}.spec-main{padding:35px 22px}.spec-main h1{font-size:35px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media(max-width:365px){.chapters{grid-template-columns:1fr}.comparison{grid-template-columns:1fr}.top-links a{display:none}.topbar{padding:0 12px}.brand-name{font-size:9px}}
@media(max-width:365px){.top-links button{font-size:10px;padding:8px 5px}.brand-name small{font-size:7px;letter-spacing:.7px}}