/* Reading layout shared with the exam desk: restrained navigation, visible content. */
:root{--paper:#fff;--white:#fff;--ink:#242a2e;--muted:#666e74;--line:#e1e5e7;--accent:#246b5b;--pale:#eef5f1;--shadow:none}
.app{grid-template-columns:204px minmax(0,1fr)}
aside{background:#f7f8f8;color:var(--ink);border-right:1px solid var(--line);padding:28px 16px}
.brand{font-size:21px;letter-spacing:0;margin:0 8px 28px}.brand small{color:var(--muted);letter-spacing:0;font-size:12px}
.nav button{color:#50585f;border-radius:5px;font-size:14px}.nav button.active{background:#e9efec;color:#215d4f;font-weight:600}.nav button:hover{background:#edf1ef}.nav button span{display:none}
.exam-link{color:var(--accent)!important;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:10px 14px 20px;margin-bottom:8px;font-size:14px}
.side-note{color:var(--muted);font-size:12px;line-height:1.9;padding:24px 12px 0}
.topbar{background:#ffffffed;backdrop-filter:blur(10px);padding:16px 36px}.topbar input,.topbar select,button{border-radius:5px}
main{max-width:1240px;padding:32px 36px 60px}h1{font-size:28px;letter-spacing:0;margin:4px 0 8px}h2{font-size:22px}.eyebrow{letter-spacing:0;color:var(--muted)}
.handbook-note{font-size:13px;color:var(--muted);margin:12px 0}.toolbar{margin:20px 0 24px}
.chap-grid{grid-template-columns:1fr;gap:0;border-top:1px solid var(--line)}
.chapter-tile{display:flex;align-items:center;gap:20px;padding:18px 12px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:#fff;box-shadow:none;width:100%}
.chapter-tile:hover{background:#f7f9f8}.chapter-tile .n{color:#7c858a;font-size:15px;min-width:26px}.chapter-copy{flex:1}.chapter-tile h3{font-size:17px;margin:0 0 5px;font-weight:600}.chapter-copy>span{font-size:13px;color:var(--muted)}.chapter-arrow{font-size:18px;color:#788980}
.handbook-resources{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0}.handbook-resources button{font-size:13px;background:#fff}
.handbook-settings{border-top:1px solid var(--line);padding-top:20px;font-size:13px;color:var(--muted)}.handbook-settings summary{cursor:pointer}.handbook-settings .toolbar{margin-bottom:0}
.topic,.panel,.deck-card{border-radius:6px;box-shadow:none}.topic summary h3{font-size:18px}.tag{border-radius:3px}.trap,.version-note,.deck-card .answer{border-radius:4px}.table-wrap{border-radius:4px}.topic summary p{color:#46535b}.topic-body{line-height:1.9}
@media(max-width:1000px){.app{grid-template-columns:180px minmax(0,1fr)}main{padding:28px 26px 50px}.topbar{padding:14px 26px}}
@media(max-width:700px){.app{display:block}aside{height:auto;padding:16px 16px 8px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:20px;margin:0 0 12px}.brand small{font-size:12px}.nav{gap:6px}.nav button,.exam-link{padding:8px 10px;min-height:40px;white-space:nowrap;border:0;margin:0;font-size:14px}.topbar{padding:12px 16px;position:static}main{padding:24px 18px 40px}h1{font-size:25px}.chapter-tile{padding:17px 2px;gap:12px}.chapter-tile h3{font-size:16px}.chapter-copy>span{font-size:12px}.handbook-settings input{display:block;max-width:100%!important}.topic summary{padding:16px}.topic-body{padding:0 16px 18px}.handbook-note{line-height:1.8}}
@media print{.app{display:block}main{padding:0}.handbook-resources,.handbook-settings{display:none}.chapter-tile{break-inside:avoid}}