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.umbrella-branches span{background:color-mix(in srgb, var(--l-blue) 8%, var(--surface));border:1px solid var(--line);border-radius:12px;padding:14px;display:block}.prose .concept-sequence{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:24px 0;display:grid}.prose .concept-sequence section{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}.prose .concept-sequence b{color:var(--l-green);margin-bottom:7px;display:block}.prose .concept-sequence span{color:var(--muted);font-size:.94rem;display:block}.prose .flow-diagram,.prose .agent-loop{border:1px solid var(--line);border-radius:var(--l-radius);background:var(--surface);flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin:24px 0;padding:24px;display:flex}.prose .flow-diagram span,.prose .agent-loop span{background:color-mix(in srgb, var(--l-green2) 12%, var(--surface));border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-weight:600}.prose .agent-loop 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11px;font-size:.84rem;font-weight:700;list-style:none;display:inline-block}:root[data-theme=dark] .prose .quiz-card summary{color:var(--cyprus-deep)}.prose .quiz-card summary::-webkit-details-marker{display:none}.prose .recap-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.prose .recap-grid section,.prose .recap-grid>div{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px;padding:18px}.prose .recap-grid h3,.prose .recap-grid h4{color:var(--l-green);margin-top:0}.prose .classification-list{gap:14px;display:grid}.prose .classification-card{background:var(--surface);border:1px solid var(--line);border-radius:15px;grid-template-columns:42px minmax(0,1fr);gap:14px;padding:16px;display:grid}.prose .classification-number{background:color-mix(in srgb, var(--l-blue) 13%, var(--surface));width:34px;height:34px;color:var(--l-blue);border-radius:50%;place-items:center;font-weight:700;display:grid}@media (width<=900px){.prose 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var(--line);vertical-align:top;text-align:left;padding:11px 13px}.prose th:last-child,.prose td:last-child{border-right:0}.prose th{background:color-mix(in srgb, var(--l-green) 9%, var(--surface));color:var(--l-green);font-weight:700;font-family:var(--font-body);letter-spacing:0;text-transform:none;white-space:normal;font-size:.92rem}.prose tbody tr:nth-child(2n){background:color-mix(in srgb, var(--sand) 12%, var(--surface))}:root[data-theme=dark] .prose tbody tr:nth-child(2n){background:color-mix(in srgb, var(--sand) 6%, var(--surface))}.prose tbody tr:last-child td{border-bottom:0}.prose pre{color:#e9f0f2;background:#101820;border:0;border-radius:14px;margin:18px 0 28px;padding:22px;font-size:.88rem;line-height:1.5;position:relative;overflow:auto;box-shadow:inset 0 0 0 1px #ffffff0f}.prose pre code{color:inherit;font-size:inherit;background:0 0;padding:0}:root[data-theme=dark] .prose pre{color:#16201e;background:#f3efe4;box-shadow:inset 0 0 0 1px #00000014}:root[data-theme=dark] .prose pre .astro-code,:root[data-theme=dark] .prose pre.astro-code,:root[data-theme=dark] .prose pre.astro-code span{color:var(--shiki-light)!important;background-color:#0000!important}.prose p code,.prose li code,.prose td code{background:color-mix(in srgb, var(--l-purple) 12%, var(--surface));color:var(--ink);border-radius:5px;padding:.15em .35em}.prose .copy-btn{color:#e9f0f2;background:#ffffff1f;border-color:#ffffff40}:root[data-theme=dark] .prose .copy-btn{color:#16201e;background:#00000014;border-color:#0003}.lesson[data-kind=exercise] .lesson__head,.lesson[data-kind=exercise] .prose .hero{background:linear-gradient(145deg,#162c46,#245a78)}.prose .tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin:22px 0;display:grid}.prose .tool-grid section{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px;padding:16px}.prose .tool-grid h3,.prose .tool-grid h4{color:var(--l-green);border:0;margin:.05rem 0 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.command-explainer,:root[data-theme=dark] .prose .code-map,:root[data-theme=dark] .prose .beginner-note{background:color-mix(in srgb, #f0fdf4 8%, var(--surface))}.prose .download-lab{border:1px solid color-mix(in srgb, var(--l-green2) 45%, var(--line));border-left:6px solid var(--l-green2);background:color-mix(in srgb, var(--l-green2) 8%, var(--surface));box-shadow:var(--shadow);border-radius:16px;margin:34px 0;padding:22px 24px}.prose .download-lab h2,.prose .download-lab h3{color:var(--ink);border:0;margin:0 0 10px;padding:0;font-size:1.25rem}.prose .download-lab a[download],.prose .download-lab a[href$=\.zip]{background:var(--l-green);color:#fff;border-radius:10px;align-items:center;gap:8px;margin-top:8px;padding:10px 18px;font-weight:700;text-decoration:none;display:inline-flex}:root[data-theme=dark] .prose .download-lab a[download]{color:var(--cyprus-deep)}.prose img.zoomable{cursor:zoom-in}.lightbox{z-index:200;background:#071e1cc7;place-items:center;padding:4vmin;display:grid;position:fixed;inset:0}.lightbox[hidden]{display:none}.lightbox__img{cursor:default;background:#fff;border-radius:10px;width:auto;max-width:96vw;height:auto;max-height:92vh;box-shadow:0 24px 70px -20px #000000b3}.lightbox__close{color:#fff;cursor:pointer;background:#ffffff1f;border:1px solid #fff6;border-radius:50%;width:42px;height:42px;font-size:1.1rem;position:fixed;top:18px;right:22px}.lightbox__close:hover{background:#ffffff3d}:root.lightbox-open{overflow:hidden}@media (width<=980px){.prose .tool-grid,.prose .folder-map{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=560px){.prose .tool-grid,.prose .folder-map{grid-template-columns:minmax(0,1fr)}}@media (width<=900px){.prose table{-webkit-overflow-scrolling:touch;max-width:100%;display:block;overflow-x:auto}.prose .table-wrap{overflow-x:visible}.prose p code,.prose li code,.prose td code,.prose 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