.studio-views{display:flex;gap:8px;flex-wrap:wrap;padding-bottom:24px}
.studio-views button{border:1px solid var(--studio-line);background:#fff;padding:13px 19px;min-height:46px;border-radius:4px;color:var(--ink);font-size:16px;font-weight:700}
.studio-views button[aria-pressed=true]{background:var(--studio-blue);color:#fff;border-color:var(--studio-blue)}
.catalog-section,.planner-section{padding-bottom:55px;scroll-margin-top:16px}
.catalog-heading{display:flex;gap:32px;justify-content:space-between;align-items:center;margin:6px 0 24px}
.catalog-heading>div{max-width:760px}.catalog-heading h2,.planner-section>h2{font-size:clamp(27px,3vw,38px);letter-spacing:-.035em;margin:0 0 14px;line-height:1.2}
.catalog-heading p,.planner-section>p{font-size:17px;line-height:1.6;margin:0}
.catalog-counts{color:var(--studio-muted);line-height:1.9!important;font-size:15px!important;flex-shrink:0}.catalog-counts strong{color:var(--studio-blue);font-size:20px}
.skill-map{background:#eaf0ff;border:1px solid #c8d1e9;padding:17px 21px;margin-bottom:25px;border-radius:5px}
.skill-map>summary{font-size:17px;font-weight:700;color:var(--studio-blue);cursor:pointer;min-height:30px}
.skill-map>p{font-size:15px;color:var(--studio-muted);margin:14px 0 20px;line-height:1.5}
.skill-map-lanes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;align-items:start}
.skill-lane h3{font-size:17px;margin:0 0 6px}.skill-lane-label{display:block;color:var(--studio-muted);font-size:14px;margin-bottom:14px}
.skill-lane{position:relative}.skill-lane:not(:last-child)::after{content:"→";position:absolute;top:0;right:-14px;color:var(--studio-blue);font-weight:700}
.skill-lane button{display:block;width:100%;text-align:left;border:1px solid var(--studio-line);border-radius:4px;padding:12px 13px;margin-bottom:8px;background:#fff;color:var(--ink);font-size:15px;line-height:1.4;min-height:48px}
.skill-lane button[aria-pressed=true]{background:var(--studio-blue);color:#fff;border-color:var(--studio-blue)}
.catalog-controls{display:grid;grid-template-columns:2fr 1.3fr 1fr 1fr;gap:15px;background:#fff;padding:21px;border:1px solid var(--studio-line);border-radius:5px}
.catalog-controls label,.planner-section>label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.catalog-controls input,.catalog-controls select,.planner-section>select{width:100%;min-width:0;font:inherit;font-size:16px;padding:11px 12px;min-height:46px;border:1px solid #a7b4be;background:#fcfdff;color:var(--ink);border-radius:4px}
.catalog-controls input:focus-visible{outline:3px solid var(--studio-blue);outline-offset:3px}
.catalog-result-heading{display:flex;gap:18px;justify-content:space-between;align-items:center;margin:22px 0 15px}
.catalog-result-heading p{font-size:15px;color:var(--studio-muted);margin:0}.catalog-result-heading button{border:0;background:none;color:var(--studio-blue);padding:10px 0;text-decoration:underline;text-underline-offset:4px;min-height:44px;font-size:15px}
.catalog-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.catalog-card{background:#fff;border:1px solid var(--studio-line);border-top:3px solid var(--studio-blue);border-radius:4px;padding:22px;min-width:0;display:flex;flex-direction:column}
.catalog-card .studio-eyebrow{font-size:13px;line-height:1.6;margin:0 0 12px}
.catalog-card h3{font-size:22px;line-height:1.3;letter-spacing:-.025em;margin:0 0 12px}.catalog-card h3 a{text-decoration:none}.catalog-card h3 a:hover{text-decoration:underline;text-underline-offset:4px}
.catalog-card>p{font-size:16px;line-height:1.6;color:var(--studio-muted);margin:0 0 20px}.catalog-card p.catalog-card-foot{font-size:14px;color:var(--studio-blue);margin:auto 0 0;padding-top:10px;font-weight:650}
.catalog-more{text-align:center;margin-top:22px}.catalog-directory{font-size:15px;color:var(--studio-muted);line-height:1.7;margin:24px 0}
.catalog-empty{background:#fff;padding:24px;border:1px solid var(--studio-line)}
.library-help{padding:19px 0;border-top:1px solid var(--studio-line)}.library-help:last-child{border-bottom:1px solid var(--studio-line)}
.library-help>summary{cursor:pointer;font-size:17px;font-weight:700;padding:5px 0;color:var(--studio-blue);min-height:34px}
.library-help h3{font-size:18px;margin:18px 0 9px}.library-help p,.library-help li{font-size:16px;line-height:1.7}.library-help li+li{margin-top:9px}
.starting-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 30px}.starting-paths p{line-height:2}.starting-paths a{white-space:normal}
.planner-section>p{max-width:960px;margin-bottom:22px}.planner-section>select{max-width:460px;margin:0 0 27px}
.argument-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px;margin:4px 0 25px}
.argument-flow>div{background:#fff;border:1px solid var(--studio-line);padding:17px 15px;border-radius:4px;position:relative;min-width:0}
.argument-flow>div:not(:last-child)::after{content:"→";position:absolute;right:-17px;top:45%;font-size:22px;color:var(--studio-blue)}
.argument-flow span{display:block;font-size:14px;color:var(--studio-blue);font-weight:700;margin-bottom:12px}
.argument-flow label{font-size:15px;font-weight:650;display:block;line-height:1.5;min-height:70px;margin-bottom:10px}
.argument-flow textarea{min-height:175px;padding:10px;font-size:16px}
.argument-preview{padding:23px 26px;border-left:4px solid var(--studio-blue);background:#eaf0ff;margin-bottom:24px}
.argument-preview h3{font-size:20px;margin:0 0 16px}.argument-preview>p{font-size:17px;line-height:1.7;white-space:pre-line;margin:0}.argument-preview>p:last-child{font-size:14px;color:var(--studio-muted);margin-top:17px}
.reader{padding-top:28px;padding-bottom:55px}.reader-breadcrumb{font-size:15px;line-height:1.7;color:var(--studio-muted);margin:0 0 27px}
.reader-title{max-width:1000px;padding-bottom:30px}.reader-title h1{font-size:clamp(34px,4vw,54px);letter-spacing:-.04em;line-height:1.12;margin:0 0 18px}
.reader-title>p:not(.studio-eyebrow){font-size:19px;color:var(--studio-muted);line-height:1.6;max-width:780px;margin:0 0 23px}
.reader-actions{display:flex;gap:12px 24px;align-items:center;flex-wrap:wrap;font-size:15px}.reader-actions a{padding:8px 0;min-height:40px}.reader-actions button{background:#fff;border:1px solid var(--studio-line);border-radius:4px;padding:10px 14px;min-height:44px;color:var(--studio-blue)}
.reader-layout{display:grid;grid-template-columns:minmax(0,850px) 280px;gap:55px;justify-content:space-between;align-items:start}
.reader-content{min-width:0;background:#fff;border:1px solid var(--studio-line);padding:6px 34px 26px;border-radius:5px}
.reader-content>section{padding-top:29px;padding-bottom:27px;scroll-margin-top:20px;border-bottom:1px solid var(--studio-line)}.reader-content>section:last-child{border-bottom:0;padding-bottom:10px}
.reader-content h2{font-size:25px;letter-spacing:-.025em;margin:0 0 17px;line-height:1.3}.reader-content h3{font-size:19px;line-height:1.4;margin:0 0 13px}.reader-content h4{font-size:17px;margin:19px 0 9px}
.reader-content p,.reader-content li{font-size:17px;line-height:1.75}.reader-content p{margin:0 0 17px}.reader-content li+li{margin-top:9px}
.method-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:0;list-style:none;margin:20px 0 0}
.method-flow li{background:#eaf0ff;padding:15px;position:relative;margin:0!important}.method-flow li:not(:last-child)::after{content:"→";position:absolute;right:-16px;top:46%;color:var(--studio-blue);font-size:20px}
.method-flow span{color:var(--studio-blue);font-size:14px;font-weight:700}.method-flow li p{font-size:16px;margin:8px 0 0;line-height:1.6}
.attempt-box{background:#f3f5f8;padding:19px 21px;margin:21px 0}.attempt-box p{margin:0}
.draft-label{display:block;font-size:15px;font-weight:700;margin:19px 0 9px}.draft-label span{font-weight:400;color:var(--studio-muted)}
.hint-box,.answer-box{padding:15px 0;border-bottom:1px solid var(--studio-line)}.hint-box summary,.answer-box summary{cursor:pointer;font-weight:700;color:var(--studio-blue);padding:5px 0;min-height:32px;font-size:16px}.hint-box p,.answer-box p{margin-top:15px}
.answer-box h3{margin-top:22px}.answer-box{background:#f1f7f2;padding:17px 21px;border:1px solid #b8cbbc;border-radius:4px;margin-top:14px}
.repair-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.repair-grid>div{padding:18px;background:#f3f5f8}.repair-grid p{margin:0}
.reader-grade-buttons{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}
.reader-grade-buttons button{border:1px solid var(--studio-line);padding:11px 14px;background:#fff;color:var(--ink);min-height:44px;border-radius:4px;font-size:15px}.reader-grade-buttons button[aria-pressed=true]{background:var(--studio-blue);color:#fff;border-color:var(--studio-blue)}
.age-exercise{border-left:3px solid var(--studio-blue);padding:17px 21px;background:#eaf0ff;margin:16px 0}.age-exercise p.focus-observe{font-size:16px;border-top:1px solid #c3ceeb;padding-top:13px;margin-bottom:0}.age-exercise p.studio-eyebrow{font-size:14px;margin-bottom:9px}
.prompt-deck{background:#f2f6e2;padding:22px;margin:20px 0}.prompt-deck>p{font-size:20px;line-height:1.6;margin:14px 0 17px}.prompt-deck button{background:var(--studio-blue);color:#fff;padding:11px 15px;min-height:44px;border:0;border-radius:4px;font-size:15px}.prompt-deck>span:last-child{font-size:14px;color:var(--studio-muted);margin-left:15px}
.planning-frame{background:#f3f5f8;border-left:3px solid var(--studio-blue);padding:20px}.reader-content p.studio-note{font-size:14px;line-height:1.6;margin:12px 0}
.reader-checks{display:grid;gap:12px;margin:22px 0}.reader-checks label{display:flex;align-items:flex-start;gap:10px;background:#f3f5f8;padding:13px;font-size:16px;line-height:1.6}.reader-checks input{width:19px;height:19px;flex-shrink:0;margin:4px 0;accent-color:var(--studio-blue)}
#observation-status{font-size:15px;color:var(--studio-muted)}.feedback-frame{border-left:3px solid #7c9227;background:#f2f6e2;padding:20px}.feedback-frame strong{font-size:16px}.feedback-frame p{font-size:16px;margin:10px 0 0}
.reader-sidebar{position:sticky;top:25px;color:var(--studio-muted)}.reader-sidebar h2{font-size:16px;color:var(--ink);margin:0 0 14px}.reader-sidebar nav{margin-bottom:30px}
.reader-sidebar nav a{display:block;padding:9px 0;font-size:15px}.reader-sidebar ul{padding-left:20px;margin:0 0 28px}.reader-sidebar li{font-size:15px;line-height:1.7;margin-bottom:11px}.reader-sidebar .studio-button{font-size:15px}
.directory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.directory-grid>section{background:#fff;border:1px solid var(--studio-line);padding:25px}.directory-grid h2{font-size:23px;margin:0 0 13px;line-height:1.3}.directory-grid p,.directory-grid li{font-size:16px;line-height:1.7}.directory-grid ul{padding-left:19px}.directory-grid li+li{margin-top:10px}
@media(max-width:1150px){.catalog-heading{align-items:flex-start}.catalog-counts{max-width:245px;flex-shrink:1}.catalog-controls{grid-template-columns:repeat(3,minmax(0,1fr))}.catalog-search{grid-column:1/-1}.reader-layout{grid-template-columns:minmax(0,1fr) 240px;gap:30px}.argument-flow{grid-template-columns:repeat(3,minmax(0,1fr))}.argument-flow>div:nth-child(3)::after{display:none}.argument-flow label{min-height:50px}}
@media(max-width:860px){.catalog-heading{display:block}.catalog-counts{max-width:none;margin-top:19px!important}.catalog-results,.directory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.skill-map-lanes{grid-template-columns:repeat(2,minmax(0,1fr))}.skill-lane:nth-child(2)::after{display:none}.reader-layout{grid-template-columns:1fr;gap:26px}.reader-sidebar{position:static}.reader-sidebar nav{display:none}.reader-sidebar{padding:24px;background:#fff;border:1px solid var(--studio-line)}.argument-flow{grid-template-columns:repeat(2,minmax(0,1fr))}.argument-flow>div::after{display:none}}
@media(max-width:560px){.studio-views{gap:7px}.studio-views button{font-size:14px;padding:11px 12px}.catalog-section,.planner-section{padding-bottom:35px}.catalog-controls{grid-template-columns:1fr;padding:17px}.catalog-search{grid-column:auto}.catalog-results,.directory-grid{grid-template-columns:1fr}.catalog-card{padding:20px}.catalog-heading h2{font-size:29px}.catalog-heading>div>p{font-size:16px}.catalog-counts{font-size:14px!important}.skill-map{padding:16px}.skill-map-lanes{grid-template-columns:1fr;gap:20px}.skill-lane::after{display:none}.starting-paths{grid-template-columns:1fr}.argument-flow{grid-template-columns:1fr;gap:25px}.argument-flow>div:not(:last-child)::after{content:"↓";display:block;right:48%;top:auto;bottom:-26px}.argument-flow label{min-height:0}.argument-flow textarea{min-height:100px}.argument-preview{padding:20px}.reader{padding-top:22px}.reader-title h1{font-size:34px}.reader-title>p:not(.studio-eyebrow){font-size:17px}.reader-content{padding:3px 19px 20px}.reader-content p,.reader-content li{font-size:16px}.reader-content h2{font-size:23px}.method-flow{grid-template-columns:1fr;gap:23px}.method-flow li:not(:last-child)::after{content:"↓";right:48%;top:auto;bottom:-26px}.repair-grid{grid-template-columns:1fr}.reader-grade-buttons{gap:7px}.reader-grade-buttons button{padding:10px 11px;font-size:14px}.prompt-deck,.age-exercise{padding:18px}.reader-title{padding-bottom:24px}.reader-actions{gap:6px 17px}}
@media print{.site-header,.site-footer,.studio-skip,.reader-actions,.reader-sidebar,.reader-grade-buttons,.prompt-deck,.studio-views{display:none!important}.studio-page{background:white}.reader,.studio-page .shell{width:100%;padding:0}.reader-layout{display:block}.reader-content{border:0;padding:0}.reader-content>section{break-inside:avoid;padding:14px 0}.reader-title h1{font-size:30px}.reader-content p,.reader-content li{font-size:12pt}.studio-page .age-exercise[hidden],.studio-page .age-exercise ul[hidden],.studio-page .age-exercise h4[hidden]{display:block!important}.age-exercise{background:none}.hint-box,.answer-box{display:block}.answer-box:not([open])>*,.hint-box:not([open])>*{display:block}.reader-breadcrumb{font-size:11pt}.method-flow{grid-template-columns:repeat(3,1fr)}textarea{min-height:70px!important}a{color:inherit}}

@media print{.reader-static-checks[hidden]{display:block!important}.reader-static-checks .fixed-check{break-inside:avoid}}