:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#f3f5f8;color:#0d1117}a{color:inherit;text-decoration:none}.app-shell{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,#0f172a,#111827);color:#e2e8f0;padding:20px}.sidebar h1{font-size:18px;margin:0 0 8px}.sidebar-subtitle{margin:0 0 16px;opacity:.8;font-size:13px;line-height:1.4}.sidebar nav{display:flex;flex-direction:column;gap:8px}.nav-link{padding:10px;border-radius:8px;background:hsla(0,0%,100%,.04);transition:background .15s ease}.nav-link:hover{background:hsla(0,0%,100%,.1)}.nav-link.active{background:rgba(37,99,235,.45)}.content{padding:24px}.card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 8px 24px rgba(15,23,42,.08)}.grid{display:grid;grid-gap:16px;gap:16px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}button,input,select,textarea{width:100%;padding:10px;border-radius:8px;border:1px solid #cbd5e1;font:inherit}button{background:#2563eb;color:#fff;border:0;cursor:pointer}button:disabled{opacity:.65;cursor:not-allowed}.ghost-btn{background:hsla(0,0%,100%,.08)}.quick-start-card ol{margin-top:8px;margin-bottom:12px;padding-left:20px;line-height:1.6}.quick-actions{display:flex;gap:10px;flex-wrap:wrap}.inline-action{display:inline-flex;align-items:center;justify-content:center;padding:8px 12px;border-radius:8px;border:1px solid #cbd5e1;background:#f8fafc}.table{width:100%;border-collapse:collapse}.table td,.table th{text-align:left;border-bottom:1px solid #e5e7eb;padding:10px;vertical-align:top}.table pre{margin:0;max-width:100%;white-space:pre-wrap;word-break:break-word;font-size:12px;line-height:1.45}.editor-surface{border:1px solid #cbd5e1;border-radius:8px;min-height:140px;padding:10px;background:#fff}.editor-surface-body{min-height:280px}.editor-surface:focus{outline:2px solid #93c5fd;outline-offset:0}details>summary{cursor:pointer}@media (max-width:1100px){.grid-3{grid-template-columns:1fr}}@media (max-width:900px){.app-shell{grid-template-columns:1fr}}