.source-browser { max-width: 1360px; margin: auto; }
.source-browser nav { flex-wrap: wrap; }
.source-tabs { border-bottom: 1px solid #d6dce5; padding-bottom: 12px; }
.source-files { display: flex; flex-wrap: wrap; gap: 10px 18px; list-style: none; padding: 0; }
.source-files:empty { display: none; }
.source-browser a[aria-current="page"] { font-weight: 700; text-decoration-thickness: 2px; }
.source-panel { min-width: 0; }
.source-panel h1 { font-size: 18px; }
.source-path { overflow-wrap: anywhere; color: #546174; font-size: 13px; }
#source-code { overflow: auto; background: #fff; border: 1px solid #d6dce5; border-radius: 4px; padding: 16px; tab-size: 4; font: 13px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; }

body { background: #fcfdff; padding: 18px; }
.source-panel h1 { font-size: 14px; }
.source-tabs { gap: 20px; }
.cm-editor { min-height: 140px; border: 1px solid #e5eaf2; border-radius: 6px; overflow: hidden; }
.cm-scroller { overflow: auto; }
.lab-controls { display: flex; gap: 8px; margin-top: 12px; }
.lab-controls button { border: 1px solid #cbd5e5; border-radius: 5px; background: white; color: #1643c5; padding: 6px 14px; font: inherit; cursor: pointer; }
.lab-controls button:first-child { background: #1643c5; color: white; border-color: #1643c5; }
[role=status] { font-size: 12px; color: #58657a; }