/* The study desk brings decisions, evidence and practice into one flow. */
.desk-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:58px;align-items:center;padding:8px 0 35px;border-bottom:1px solid var(--line)}
.desk-hero h1{font-size:clamp(36px,4.1vw,58px);line-height:1.1;margin:20px 0}.desk-hero h1 em{font-weight:400;color:var(--copper)}
.desk-hero>div>p{max-width:520px;font-size:16px;line-height:1.8}.desk-hero .row{margin:24px 0}.desk-hero .desk-caption{font-size:12px;color:var(--muted)}
.desk-next{padding:28px;background:var(--tint);border:1px solid #c8d2c1;border-top:3px solid var(--green);position:relative}.desk-next h2{font-size:30px;max-width:300px;margin:24px 0 12px}.desk-next p{line-height:1.75;font-size:14px}.desk-next .button{margin:8px 0 18px}.desk-next details{font-size:12px;border-top:1px solid #cad0c0;padding-top:14px}.desk-next summary{cursor:pointer;font-weight:600}.desk-next details p{font-size:12px}
.desk-orbit{float:right;position:relative;border:1px solid #a6bba5;border-radius:50%;width:62px;height:62px;margin:12px 0 0 12px;color:var(--green);font:italic 21px Georgia,serif;display:grid;place-items:center}.desk-orbit i,.desk-orbit b{position:absolute;font-size:14px;font-weight:400;background:var(--tint);padding:3px}.desk-orbit i{top:-10px;left:3px}.desk-orbit b{bottom:-8px;right:-2px}
.desk-resume{display:flex;gap:25px;align-items:center;justify-content:space-between;background:#f2eadd;border-left:3px solid var(--copper);padding:22px 25px;margin-top:25px}.desk-resume h2{font-size:24px;margin:8px 0}.desk-resume p{font-size:13px;margin:0}
.desk-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-bottom:1px solid var(--line);padding:26px 0;margin-bottom:32px}.desk-stats>a{padding:0 22px;border-right:1px solid var(--line);color:var(--ink)}.desk-stats>a:first-child{padding-left:0}.desk-stats>a:last-child{border:0}.desk-stats b{font:34px Georgia,serif;display:block;margin-bottom:9px}.desk-stats b small{font:16px Georgia,serif;color:var(--muted)}.desk-stats span{font-size:12px;line-height:1.6}
.desk-session{margin:0 0 38px;padding:28px}.session-times{display:flex;gap:6px}.session-times button{padding:8px 13px;white-space:nowrap}.session-times button[aria-pressed=true]{background:var(--green);color:white;border-color:var(--green)}.desk-session label{display:block;font-size:12px;font-weight:600}.desk-session select{display:block;margin-top:9px;width:100%;max-width:600px}.session-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:22px 0}.session-steps>a{border:1px solid var(--line);padding:18px;display:grid;grid-template-columns:26px minmax(0,1fr) 14px;gap:10px;color:var(--ink)}.session-steps>a:hover{background:var(--tint)}.session-number{font:22px Georgia,serif;color:var(--copper)}.session-steps h3{font-size:14px;margin:2px 0 9px}.session-steps p{font-size:12px;line-height:1.6;margin:0}
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:35px}.topic-card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);padding:22px}.topic-top{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}.topic-status{font-size:10px;padding:5px 8px;background:var(--tint);color:var(--green)}.topic-status.wrong,.topic-status.unanswered{background:#f6e5d9;color:#893c28}.topic-status.assisted,.topic-status.due{background:#f0ead8;color:#716026}.topic-card h3{font:23px/1.25 Georgia,serif;margin:22px 0 10px}.topic-card>p{font-size:13px;line-height:1.75;flex:1}.topic-meter{height:4px;background:#e8e7df;margin:15px 0 10px}.topic-meter span{display:block;height:100%;background:var(--green)}.topic-card>small{font-size:11px;color:var(--muted);line-height:1.7}.topic-card .row{justify-content:space-between;gap:10px;margin-top:20px;font-size:12px}.topic-card .button{padding:9px 12px;min-height:38px}
.desk-tools{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0 0 35px}.desk-tools>a{padding:26px;border:1px solid var(--line);color:var(--ink)}.desk-tools>a:first-child{background:#e8eddf}.desk-tools>a:last-child{background:#eee6d8}.desk-tools h2{font-size:27px;line-height:1.2}.desk-tools p{line-height:1.7;font-size:14px}.desk-paths{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:30px}.desk-paths>a{padding:22px;border:1px solid var(--line);background:var(--paper);color:var(--ink)}.desk-paths h3{font:22px Georgia,serif}.desk-paths p{font-size:12px;line-height:1.7}.desk-paths>a>span:last-child{font-size:11px;color:var(--muted)}
.desk-history{margin:30px 0 40px}.desk-history>a{display:flex;gap:20px;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:20px 4px;color:var(--ink)}.desk-history small{display:block;font-size:11px;color:var(--muted);margin-top:7px}.desk-history strong{font:21px Georgia,serif;white-space:nowrap}.desk-history b{font-size:14px}.topic-filters{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:18px;padding:22px}.topic-filters label{font-size:12px;font-weight:600;min-width:0}.topic-filters input,.topic-filters select{display:block;width:100%;margin-top:9px}.topic-count{font-size:13px;color:var(--muted);margin:20px 0 35px}.study-rules{padding:22px;font-size:13px;line-height:1.8}.study-rules summary{cursor:pointer;font-weight:600}
.practice-mode-links{display:flex;gap:10px;margin-bottom:24px}.practice-mode-links a{padding:13px 20px;border:1px solid var(--line);font-size:13px}.practice-mode-links a[aria-current=page]{background:var(--green);border-color:var(--green);color:white}.test-lesson-select{display:block;margin-top:22px;font-size:13px}.test-lesson-select select{display:block;width:100%;margin-top:8px}.guided-support{padding-top:22px}.guided-feedback:empty{display:none}.guided-feedback p{white-space:pre-line}.guided-feedback small{display:block;line-height:1.7}.guided-controls{margin:15px 0}.guided-help-row{display:flex;align-items:start;gap:20px;justify-content:space-between;border-top:1px solid var(--line);padding-top:18px}.guided-hint{flex:1}.guided-hint summary,.guided-solution summary{cursor:pointer;font-size:14px;font-weight:600;color:var(--green);padding:10px 0}.guided-hint p{line-height:1.8;font-size:14px}.guided-solution{border-top:1px solid var(--line);padding:10px 0;margin-top:12px}.guided-help-row .exercise-help-button{margin:0}.guided-session-note{background:#f1ecdf;border-left:3px solid var(--copper);padding:18px 22px;font-size:13px;line-height:1.8;margin-bottom:20px}.guided-session-note p{margin:0}.guided-session-note strong{display:block;margin-bottom:7px}
@media(min-width:1500px){.desk-hero h1{font-size:58px}}
@media(max-width:1150px){.desk-hero{gap:28px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.session-steps{grid-template-columns:1fr}.desk-paths{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.desk-hero{grid-template-columns:1fr;gap:24px}.desk-hero h1{font-size:40px}.desk-next{padding:24px}.desk-next h2{font-size:28px}.desk-stats{grid-template-columns:1fr 1fr;gap:24px 0}.desk-stats>a{padding:0 12px}.desk-stats>a:nth-child(odd){padding-left:0}.desk-stats>a:nth-child(even){border:0}.desk-stats b{font-size:30px}.desk-stats b small{font-size:14px}.desk-resume{display:block}.desk-resume .button{margin-top:18px}.desk-session{padding:20px}.desk-session .section-heading{display:block}.session-times{margin:16px 0 22px}.session-times button{flex:1}.topic-grid,.desk-tools,.topic-filters{grid-template-columns:1fr}.topic-card{padding:21px}.desk-paths{gap:10px}.desk-paths>a{padding:17px}.desk-paths h3{font-size:20px}.desk-history>a{gap:12px}.desk-history strong{font-size:18px}.practice-mode-links a{flex:1;text-align:center;padding:12px 8px}.guided-help-row{display:block}.guided-help-row>div{margin:12px 0}.topic-chapters>.section-heading{align-items:start}.desk-hero .row{flex-wrap:wrap}.guided-session-note{padding:17px}.topic-filters{padding:20px;gap:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.session-launch{padding:26px 30px;border:1px solid #cad7c5;background:#edf3e9;border-radius:18px;margin-bottom:25px}.session-launch .row{margin-top:16px}