/* Cohesive extension of the sage / paper training room. */
.mobile-course-picker{display:none}.nav-stage{border-bottom:1px solid #dce5d6;padding:8px 0}.nav-stage>summary{font-size:11px;cursor:pointer;color:#6c8161;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 6px}.nav-stage>summary::after{content:'+';font:16px Consolas}.nav-stage[open]>summary::after{content:'−'}.nav-stage summary small{margin-left:auto;font-size:9px;color:#8c9d80}.nav-stage[open]>summary{color:#2d6046;font-weight:600}.nav-stage>div{display:grid;gap:3px}.nav-stage .lesson-link{padding:10px 8px}.nav-stage .lesson-link strong{font-size:12px}.nav-stage .lesson-link small{font-size:9px}.nav-stage .lesson-link .num{font-size:14px}.sidebar-label{margin-top:22px}.sidebar .side-note{display:none}.offline{margin-top:auto}.catalog-button{margin-top:14px}.code-lines{position:relative;max-height:580px;overflow:auto;scrollbar-width:thin;scrollbar-color:#c2d2b4 transparent}.code-line{flex-shrink:0}.lab{overflow:clip}.lab-controls{position:sticky;bottom:0;z-index:3;background:#fffffff2;backdrop-filter:blur(8px);box-shadow:0 -5px 18px #3b59300a}.variable-details{width:100%;font-size:11px;color:#778a68}.variable-details summary{cursor:pointer;padding:8px 0;line-height:1.8}.variable-details>div{display:flex;gap:6px;flex-wrap:wrap;padding:8px 0}.scene[data-kind=algorithm]{padding:18px 19px 10px;min-height:280px}.algo-title{display:flex;flex-direction:column;gap:6px;margin-bottom:17px}.algo-title>span{font:9px Consolas,monospace;color:#8a9c70;letter-spacing:1.6px}.algo-title>b{font-size:13px;font-weight:550;color:#4b6840;line-height:1.7}.algo-empty{padding:19px 10px;border:1px dashed #cbdac0;border-radius:10px;text-align:center;font-size:11px;line-height:1.8;color:#87977a;flex:1 1 100%}.algo-array{margin:16px 0;min-width:0}.algo-row-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;font-size:12px;color:#4d703c}.algo-row-heading small{color:#8b9d79;font-size:9px;font-weight:400}.algo-cells{display:flex;gap:6px;flex-wrap:wrap;align-items:stretch}.algo-cell{position:relative;min-width:41px;max-width:100%;padding:22px 9px 6px;border:1px solid #d8e2ce;border-radius:8px;text-align:center;background:#fff;min-height:68px;overflow-wrap:anywhere}.algo-cell strong{display:block;font:550 15px/1.7 Consolas,monospace;color:#557243;max-width:100%;overflow-wrap:anywhere}.algo-cell>small{display:block;font:9px Consolas,monospace;color:#a1ad92;margin-top:5px;border-top:1px solid #edf2e7;padding-top:4px}.pointer-label{position:absolute;top:6px;left:2px;right:2px;font:8px Consolas,monospace;color:#7c9551;white-space:normal}.algo-cell.pointed{border-color:#a2c270;box-shadow:0 0 0 2px #e8f2d9}.algo-cell.in-window{background:#ecf6d9}.algo-cell.updated{background:#fff2dc;border-color:#d6b77e}.algo-cell.source-cell{border-color:#94b3c6;background:#eef5f8}.algo-metrics{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 5px}.algo-metric{border:1px solid #dce5d0;background:#fff;border-radius:9px;padding:10px 12px;min-width:77px;max-width:100%;display:flex;flex-direction:column;gap:5px;overflow-wrap:anywhere}.algo-metric code{font-size:10px;color:#8c9e79}.algo-metric strong{font:600 18px/1.5 Consolas,monospace;overflow-wrap:anywhere;color:#4d713a}.algo-metric small{font-size:8px;color:#a1ad94}.algo-metric.fresh{background:#f1f8e0;border-color:#b9d393}.algo-fine{font-size:10px;line-height:1.8;color:#859574;margin:10px 0;overflow-wrap:anywhere}.dependency-note{padding:11px 12px;border-left:3px solid #94b3c6;background:#f0f5f7;border-radius:0 7px 7px 0;font-size:11px;color:#6d8797;line-height:1.8;margin-top:10px}.dp-board{margin:18px 0}.dp-scroll{max-width:100%;overflow-x:auto;scrollbar-width:thin}.dp-matrix{border-collapse:separate;border-spacing:4px;width:100%;min-width:0;table-layout:fixed;font-family:Consolas,monospace;text-align:center}.dp-matrix th{font-size:10px;color:#8a9d74;height:23px;font-weight:400}.dp-matrix th:first-child{width:23px}.dp-matrix td{background:#f8faf3;border:1px solid #dce5d0;border-radius:6px;height:35px;font-size:13px;color:#567441;overflow-wrap:anywhere;padding:2px}.dp-matrix td.dp-current{border-color:#83a64d;box-shadow:0 0 0 1px #99b864}.dp-matrix td.dp-updated{background:#fff0d7;border-color:#d3ab6b;color:#a1682e}.network-svg,.heap-svg,.linked-svg,.answer-axis{width:100%;height:auto;display:block;max-height:290px}.network-frame{background:#fcfdf9;border:1px solid #e3ecd9;border-radius:13px;padding:6px;margin-bottom:12px}.network-frame>.algo-fine{padding:0 10px;font-size:9px;margin:0 0 6px}.network-edge path{fill:none;stroke:#c1d2b5;stroke-width:2}.network-edge rect{fill:#fcfdf9}.network-edge text{text-anchor:middle;font:15px Consolas,monospace;fill:#8b9978}.network-edge.chosen path{stroke:#497b42;stroke-width:4}.network-edge.chosen text{fill:#39662f;font-weight:600}.network-node circle{fill:#fff;stroke:#c1d3ad;stroke-width:2}.network-node.reached circle{fill:#e5f0cf;stroke:#9bbb65}.network-node.current circle{fill:#ffedcf;stroke:#c18c45;stroke-width:3}.network-node text{text-anchor:middle;font:20px Consolas,monospace;fill:#52723d}.network-node text.node-distance{font-size:13px;fill:#839b6a}.heap-svg circle{fill:#f4f9e9;stroke:#a4c179;stroke-width:2}.heap-svg circle.heap-root{fill:#dfeebe;stroke:#85a548}.heap-edge{stroke:#c0d2a8;fill:none;stroke-width:2}.heap-svg text,.linked-svg text{font:18px Consolas,monospace;text-anchor:middle;fill:#52763a}.heap-svg text.heap-index,.linked-svg text.heap-index{font-size:11px;fill:#8ba074}.linked-svg rect{fill:#f5f9ed;stroke:#b8cf9a;stroke-width:1.5}.linked-svg .linked-current rect{fill:#fff0da;stroke:#bf9559;stroke-width:2}.link-edge{fill:none;stroke:#98b878;stroke-width:2}.linked-svg text.null-label{font-size:12px;fill:#a99a7b}.timeline-board svg{width:100%;display:block}.timeline-grid{stroke:#e2e9d9;stroke-width:1;stroke-dasharray:3 4}.timeline-tick{font:11px Consolas;text-anchor:middle;fill:#9dab8b}.timeline-index{font:11px Consolas;fill:#a1af90}.timeline-bar{fill:#e5efd5;stroke:#bbcf9e}.timeline-bar.picked{fill:#79a05b;stroke:#668d48}.timeline-value{fill:#426a33;font:12px Consolas;text-anchor:middle}.timeline-bar.picked+.timeline-value{fill:white}.call-tower{display:flex;flex-direction:column;gap:8px;margin:14px 0}.call-frame{border:1px solid #dae5cd;border-left:3px solid #bacd9f;border-radius:7px;background:#fff;padding:10px 12px}.call-frame.active{border-color:#9cbb69;background:#f0f7e3}.call-frame>div{display:flex;justify-content:space-between;gap:9px;color:#5e7e43;align-items:center}.call-frame>div span{font:9px Consolas;color:#94a77d}.call-frame>div code{font-size:12px}.call-frame p{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;font:10px Consolas;line-height:1.7;color:#859575}.call-frame b{color:#56743e}.return-ticket{font-size:13px;padding:12px;background:#fff4df;color:#a5824b;border-radius:8px;text-align:center;overflow-wrap:anywhere}.axis-base{stroke:#d9e4cc;stroke-width:8;stroke-linecap:round}.axis-range{stroke:#a1be6c;stroke-width:8;stroke-linecap:round}.answer-axis circle{fill:#547a39;stroke:#fff;stroke-width:2}.answer-axis circle.axis-mid{fill:#c69751}.answer-axis text{font:13px Consolas;text-anchor:middle;fill:#718956}.euclid-chain{display:grid;gap:9px}.euclid-chain>div{display:flex;align-items:center;justify-content:center;gap:12px;padding:15px;background:#f7faef;border:1px solid #dae6c9;border-radius:9px;font:16px Consolas;color:#93a47a}.euclid-chain b{color:#608145}.euclid-chain strong{background:#e9f2d3;border-radius:5px;padding:5px 8px;color:#65853f}.binary-exponent{text-align:center;background:#f2f7e9;border-radius:12px;padding:18px;margin:12px 0}.binary-exponent>small{font-size:10px;color:#8d9d79}.binary-exponent>div{display:flex;justify-content:center;gap:9px;margin:17px 0}.binary-exponent span{font:29px Consolas;color:#577c39;padding:7px 14px;border:1px solid #bfd39c;background:#fff;border-radius:8px}.binary-exponent p{font-size:11px;color:#83976d}.mod-contrast{display:flex;flex-direction:column;align-items:center;gap:13px;padding:25px;background:#fff8ec;border:1px solid #edd9b6;border-radius:12px}.mod-contrast span{font:14px Consolas;color:#af9367}.mod-contrast strong{font:30px Consolas;color:#ac7c42}.math-symbol{font:24px Georgia;color:#b1c197;text-align:center;padding:22px 0}.sieve-board{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px;margin:15px 0}.sieve-cell{border:1px solid #dce5d2;background:#f0f5e6;border-radius:8px;text-align:center;padding:10px 3px}.sieve-cell strong{display:block;font:19px Consolas;color:#6b8a4d}.sieve-cell small{font-size:8px;color:#9aa98b;margin-top:5px;display:block}.sieve-cell.eliminated{background:#f7f7f3;border-color:#e8ebe2}.sieve-cell.eliminated strong{color:#b8bfae;text-decoration:line-through;text-decoration-thickness:1px}.sieve-cell.prime-focus{border-color:#d0a265;background:#fff4df}.pipeline-track{display:flex;align-items:stretch;justify-content:space-between;gap:7px;margin:17px 0 23px}.pipeline-track>span{flex:1;border:1px solid #d9e4cf;border-radius:9px;background:#f8faf3;padding:13px 8px;text-align:center;font-size:13px;color:#9bad86}.pipeline-track>span.done{background:#eaf3d9;border-color:#abc77c;color:#678a42}.pipeline-track small{display:block;font-size:8px;margin-top:9px;color:#97a784;line-height:1.8}.pipeline-track i{align-self:center;color:#b9c9a3;font-style:normal}.discipline-label{font:600 15px Consolas;color:#648548;background:#f0f6e5;text-align:center;border-radius:9px;padding:15px;margin:14px 0}.training-clock{display:flex;gap:16px;align-items:center;padding:20px;border:1px solid #d2debf;background:#edf4e1;border-radius:13px;margin-bottom:25px;flex-wrap:wrap}.training-clock>div{flex:1;min-width:180px}.training-clock span{font-size:13px;color:#56743d}.training-clock p{font-size:10px;color:#8b9c76;margin-top:6px}.training-clock output{font:26px Consolas;color:#5e7e42}.training-clock .text-button{font-size:11px}
@media(max-width:1150px) and (min-width:941px){.scene[data-kind=algorithm]{padding:15px 12px}.algo-cell{min-width:34px;padding-left:6px;padding-right:6px}.algo-cell strong{font-size:13px}.algo-metric{min-width:65px;padding:9px}.algo-metric strong{font-size:16px}.dp-matrix{border-spacing:2px}.dp-matrix td{font-size:11px}}
@media(max-width:700px){.mobile-course-picker{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:11px;color:#789365}.mobile-course-picker select{flex:1;min-width:0;max-width:100%;border:1px solid #d6e0ca;border-radius:8px;background:#fff;padding:12px 8px;color:#466b37;font-size:12px}.sidebar #lesson-nav{display:none}.sidebar .catalog-button{margin-top:8px}.scene[data-kind=algorithm]{padding:17px 14px 8px}.code-lines{max-height:390px}.algo-cell{min-width:34px;min-height:62px;padding:19px 7px 5px}.algo-cell strong{font-size:13px}.algo-title>b{font-size:12px}.algo-cells{gap:5px}.pointer-label{font-size:7px}.algo-metric{min-width:67px;padding:9px}.algo-metric strong{font-size:16px}.algo-fine{font-size:9px}.dp-matrix{border-spacing:3px}.dp-matrix td{font-size:11px;height:29px}.dp-matrix th{font-size:9px}.dp-matrix th:first-child{width:17px}.network-node text{font-size:24px}.network-node text.node-distance{font-size:17px}.network-edge text{font-size:20px}.heap-svg text,.linked-svg text{font-size:22px}.heap-svg text.heap-index,.linked-svg text.heap-index{font-size:15px}.timeline-value{font-size:16px}.timeline-tick,.timeline-index{font-size:13px}.sieve-board{grid-template-columns:repeat(5,minmax(0,1fr));gap:5px}.sieve-cell strong{font-size:16px}.euclid-chain>div{font-size:13px;gap:7px}.answer-axis text{font-size:17px}.pipeline-track{gap:5px}.pipeline-track>span{padding:12px 4px;font-size:12px}.training-clock{padding:16px;gap:12px}.lab-controls{backdrop-filter:none;background:#fff}}
@media(prefers-reduced-motion:reduce){.algo-cell,.dp-matrix td{transition:none}}
@media print{.mobile-course-picker,.training-clock{display:none!important}.lab-controls{position:static}}
.reading-section{margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}.reading-section h2{margin:8px 0 12px}.reading-intro{color:var(--muted);line-height:1.8}.reading-card{padding:24px;background:linear-gradient(130deg,#f1f5ed,#fcfcf8);border:1px solid #dce5d4;border-radius:18px;margin:20px 0}.reading-meta{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#536e40;font-size:12px}.reading-meta span{padding:4px 9px;background:#e1ead8;border-radius:5px}.reading-card h3{font-size:23px;margin:16px 0 10px}.reading-card p{line-height:1.85;color:#5d6658}.reading-card .reading-topic{color:#36452d}.reading-transfer{margin:20px 0;padding:16px;border-left:3px solid #829c6b;background:#ffffffa8;border-radius:0 10px 10px 0}.reading-transfer b{font-size:12px;letter-spacing:.08em}.reading-transfer p{margin:8px 0 0}.reading-card a{display:inline-block;text-decoration:none}.reading-section .algo-fine{line-height:1.8}
.lab-controls{grid-row:1;top:0;bottom:auto;align-self:start;border-top:0;border-bottom:1px solid var(--line)}