:root{--paper:#f8fafc;--white:#fff;--ink:#142c48;--navy:#133559;--muted:#506178;--line:#c8d4e1;--blue:#17519c;--soft:#e8eff8;--danger:#9b2335;--green:#176043;--radius:4px;font-family:'Segoe UI',Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;color-scheme:light}
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.masthead{min-height:91px;padding:22px 36px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:var(--navy);color:#f4f7fc}.brand{display:flex;align-items:center;gap:19px;text-decoration:none;color:inherit}.unit-mark{border-left:3px solid #a7c9ef;font:20px Consolas,monospace;padding:8px 14px}.brand small{display:block;font-size:11px;letter-spacing:.13em;margin-bottom:5px}.brand strong{font-size:15px;letter-spacing:.09em}.masthead-label{font-size:11px;letter-spacing:.1em;line-height:1.8}.masthead-label span{display:block;text-align:right;color:#c2d5ee}.app-shell{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:calc(100vh - 91px)}.sidebar{padding:34px 22px 24px;background:var(--soft);display:flex;flex-direction:column}.sidebar-label,.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--muted)}.sidebar-title{font:500 30px/1.2 Bahnschrift,'Arial Narrow',sans-serif;margin:17px 0 30px}.nav-link{display:flex;gap:10px;align-items:center;text-decoration:none;padding:12px 10px;margin-bottom:5px;color:var(--ink);font-size:14px;min-height:46px}.nav-link.active{background:var(--blue);color:var(--white)}.nav-link .icon{width:17px}.nav-section-label{display:block;margin:22px 10px 8px;color:var(--muted);font-size:11px;letter-spacing:.1em}.sidebar-bottom{margin-top:auto;padding-top:50px;font-size:12px;color:var(--muted)}.sidebar-bottom .text-button{font-size:12px;text-align:left;margin-top:10px}.workspace{min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:14px 40px;border-bottom:1px solid var(--line)}.breadcrumb{font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--muted)}.topbar .text-button{font-size:12px}main{max-width:1160px;margin:0 auto;padding:36px 40px 48px;min-width:0;overflow-wrap:anywhere}main:focus{outline:none}.footer{display:flex;justify-content:space-between;gap:18px;padding:22px 40px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);letter-spacing:.03em}.saving-warning{padding:14px 40px;background:#fff1d7;border-bottom:1px solid #ce9f44;font-size:14px;color:#654211}.saving-warning[hidden]{display:none}
.page-heading{margin-bottom:30px}.page-heading .eyebrow{display:block;margin-bottom:12px}.page-heading h1{margin-bottom:14px}.page-heading p{font-size:16px;color:var(--muted);max-width:720px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.section-heading h2{margin-top:5px}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:1px solid var(--blue);padding:11px 17px;min-height:46px;background:var(--blue);color:var(--white);font-size:15px;font-weight:600;text-decoration:none}.button.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.button.dark{background:var(--navy);border-color:var(--navy)}.text-button{display:inline-flex;gap:8px;align-items:center;border:0;background:none;padding:6px 0;min-height:44px;color:var(--blue);font-size:14px;text-decoration:underline;text-underline-offset:4px}.icon-button{display:grid;place-items:center;width:42px;min-height:42px;border:1px solid var(--line);background:var(--white);font-size:22px}.notice{padding:16px 18px;margin:18px 0;background:#fff1d7;border-left:3px solid #b57a26;font-size:14px;line-height:1.8}.muted,.fine-print{color:var(--muted)}.fine-print{font-size:13px;line-height:1.8}.accent-dot{color:var(--blue)}
.handbook-intro{border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:30px}.handbook-chapters{display:grid;gap:0;margin-bottom:38px;border-top:1px solid var(--line)}.handbook-chapter{display:grid;grid-template-columns:46px minmax(0,1fr) auto;gap:18px;padding:25px 0;border-bottom:1px solid var(--line);align-items:center}.chapter-number{font:16px Consolas,monospace;color:var(--muted);align-self:start;padding-top:6px}.handbook-chapter h2{margin-bottom:6px}.handbook-chapter h2 a{color:var(--ink);text-decoration:none}.handbook-chapter p{font-size:14px;color:var(--muted);max-width:600px}.chapter-source{display:block;margin-top:9px;font-size:12px;color:var(--muted)}.book-topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;border-top:1px solid var(--line)}.book-topic{padding:18px 0;border-bottom:1px solid var(--line)}.book-topic h3{font-size:18px;margin-bottom:5px}.book-topic p{font-size:13px;color:var(--muted)}.book-topic-links{display:flex;gap:18px;flex-wrap:wrap}.book-topic a{font-size:14px;min-height:44px;display:inline-flex;align-items:center}.home-note{margin-top:28px;border-left:3px solid var(--blue);padding-left:17px;font-size:14px;color:var(--muted)}
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.bank-controls{display:flex;gap:18px;align-items:center}.search-field{display:flex;gap:10px;align-items:center;flex:1;border:1px solid var(--line);padding:0 12px;background:var(--white)}.search-field input{flex:1;min-width:0;border:0;padding:13px 0;background:none}.bank-count{font-size:13px;color:var(--muted);margin:18px 0}.knowledge-item{border-bottom:1px solid var(--line)}.knowledge-item summary{display:flex;align-items:center;gap:15px;padding:17px 0;cursor:pointer}.knowledge-item summary small{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}.knowledge-item summary strong{font-size:16px;font-weight:500;line-height:1.6}.bank-topic-icon{align-self:flex-start;padding-top:5px}.expand-symbol{margin-left:auto;font-size:24px}.knowledge-item[open] .expand-symbol{transform:rotate(45deg)}.knowledge-answer{padding:10px 15px 25px 35px}.knowledge-answer>p{font-size:16px;line-height:1.9;margin:12px 0 18px;white-space:pre-wrap}.bank-template,.content-note{color:var(--muted)}.bank-practice{display:flex;margin-top:15px}.bank-image{max-width:100%;max-height:260px;object-fit:contain}.bank-disclaimer{margin-top:25px;font-size:13px;line-height:1.8;color:var(--muted)}.empty-state{padding:40px 0}.empty-state h2{margin-bottom:10px}.empty-state p{color:var(--muted)}
dialog{border:1px solid var(--line);border-radius:5px;padding:34px;max-width:620px;width:calc(100% - 32px);max-height:90vh;overflow:auto;color:var(--ink)}dialog::backdrop{background:#0c203bb0}.dialog-close{position:absolute;right:15px;top:15px}dialog h2{margin:14px 0}dialog h3{margin:25px 0 10px}dialog p{font-size:14px;color:var(--muted);line-height:1.9}.dialog-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:25px}.danger{color:var(--danger)}.danger-button{background:var(--danger);border-color:var(--danger);color:var(--white)}
@media(max-width:900px){.app-shell{grid-template-columns:190px minmax(0,1fr)}.sidebar{padding:30px 16px}.sidebar-title{font-size:26px}.topbar{padding:12px 26px}main{padding:30px 26px 40px}.footer{padding:20px 26px}.handbook-chapter{grid-template-columns:32px minmax(0,1fr)}.handbook-chapter>.button{grid-column:2;justify-self:start}.book-topic-list{grid-template-columns:1fr}.setup-help{align-items:flex-start;flex-direction:column}}
@media(max-width:700px){.masthead{padding:18px 20px;min-height:83px;gap:14px}.brand{gap:10px}.unit-mark{padding:6px 9px;font-size:17px}.brand strong{font-size:12px}.brand small{font-size:10px}.masthead-label{font-size:10px;max-width:95px}.app-shell{display:block}.sidebar{padding:12px 20px 0;background:var(--soft)}.sidebar-label,.sidebar-title,.sidebar-bottom,.nav-section-label{display:none}#navigation{display:flex;gap:5px;flex-wrap:wrap}.nav-link{font-size:12px;min-height:44px;padding:10px 8px;margin:0}.nav-link .icon{display:none}.topbar{padding:10px 20px;min-height:52px}.breadcrumb{font-size:10px;max-width:180px}.topbar .text-button{font-size:11px}main{padding:27px 20px 35px}.page-heading{margin-bottom:25px}.page-heading p{font-size:15px}.eyebrow{font-size:11px}.footer{font-size:10px;flex-direction:column;gap:7px;padding:18px 20px}.saving-warning{padding:13px 20px}.handbook-chapter{gap:10px;padding:22px 0}.handbook-chapter h2{font-size:23px}.handbook-chapter p{font-size:14px}.section-heading{align-items:flex-start;flex-direction:column;gap:10px}.setup-card .section-heading{gap:15px}.session-options{gap:14px}.session-options label{width:100%}.session-options select{width:100%}.topic-pills{gap:7px}.topic-pill{font-size:13px}.question-title{font-size:24px}.question-card{padding:20px 0}.answer-actions{gap:12px}.answer-actions .button{width:100%}.answer-actions .text-button{font-size:13px}.blank-passage{font-size:17px;padding:12px}.feedback{padding:17px}.feedback h2{font-size:21px}.summary-stats{gap:22px}.summary-actions{flex-direction:column}.bank-controls{flex-direction:column;align-items:stretch}.knowledge-item summary{gap:10px}.knowledge-item summary strong{font-size:15px}.knowledge-answer{padding-left:0}.bank-topic-icon{display:none}.book-topic-list{gap:0}.button{font-size:14px}dialog{padding:28px 22px}.dialog-actions{align-items:stretch;flex-direction:column}.sidebar nav a.active{border-bottom:2px solid var(--blue);background:transparent;color:var(--blue)}}
@media(max-width:370px){.masthead-label{display:none}.handbook-chapter{grid-template-columns:23px minmax(0,1fr)}main{padding-inline:16px}.topbar{padding-inline:16px}.nav-link{font-size:11px}.sidebar{padding-inline:16px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.practice-return{padding:16px 42px 0}.practice-return a{display:inline-flex;align-items:center;min-height:44px;font-size:14px}@media(max-width:900px){.practice-return{padding-inline:26px}}@media(max-width:700px){.practice-return{padding-inline:20px}}@media(max-width:370px){.practice-return{padding-inline:16px}}
.masthead-meta{display:flex;align-items:center;gap:16px}.release-label{display:inline-block;flex-shrink:0;padding:5px 10px;border-radius:2px;background:#ffe1a6;color:#3b2c16;font-size:12px;font-weight:600;letter-spacing:.08em;line-height:1.4;text-transform:uppercase}@media(max-width:700px){.masthead-meta{flex-direction:column;align-items:flex-end;gap:5px}}

/* Compact headings after removing introductory copy. */
.sidebar{padding-top:22px}.page-heading{margin-bottom:22px}.page-heading h1{margin-bottom:0}.handbook-intro{border:0;padding-bottom:0;margin-bottom:22px}.handbook-chapter{padding:20px 0}.handbook-chapter h2{margin-bottom:3px}.handbook-chapters{margin-bottom:30px}.reference-link{margin:0 0 18px;font-size:14px}.setup-card{padding-top:18px}.topic-pills{margin:16px 0}.footer{padding-top:16px;padding-bottom:16px}
@media(max-width:700px){.sidebar{padding-top:12px}.handbook-chapter{padding:18px 0}.page-heading{margin-bottom:20px}}