:root{color-scheme:light;--bg:#f5f7fb;--panel:#fff;--ink:#172033;--muted:#647084;--line:#d8dee9;--primary:#1662d4;--primary-dark:#0f4fae;--danger:#b42318}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.button,button{display:inline-flex;min-height:40px;align-items:center;justify-content:center;border:0;border-radius:6px;background:var(--primary);color:#fff;padding:0 16px;font-weight:700;cursor:pointer}.button:hover,button:hover{background:var(--primary-dark)}.compact{min-height:32px;padding:0 10px;font-size:13px}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-panel{width:min(420px,100%);display:grid;grid-gap:18px;gap:18px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:28px;box-shadow:0 18px 50px rgba(28,41,61,.12)}.login-panel h1,.session-header h1,.topbar h1{margin:0}label{display:grid;grid-gap:8px;gap:8px;color:var(--muted);font-weight:650}input{height:42px;border:1px solid var(--line);border-radius:6px;padding:0 12px;font:inherit}.error{margin:0;color:var(--danger);font-weight:700}.page{width:min(1180px,calc(100% - 48px));margin:0 auto;padding:32px 0}.session-header,.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.topbar nav{display:flex;gap:10px}.topbar nav a{border:1px solid var(--line);border-radius:6px;padding:9px 12px;background:var(--panel)}.eyebrow{margin:0 0 6px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:0;text-transform:uppercase}.lab-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:16px;gap:16px}.lab-card,.table-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:20px}.lab-card{display:grid;grid-gap:28px;gap:28px}.lab-card h2{margin:0 0 8px}.lab-card p:last-child{color:var(--muted)}table{width:100%;border-collapse:collapse}td,th{border-bottom:1px solid var(--line);padding:12px;text-align:left}th{font-size:12px;text-transform:uppercase}.empty,th{color:var(--muted)}.workspace-layout{height:100vh;display:grid;grid-template-columns:minmax(360px,34vw) 1fr;overflow:hidden}.instructions{height:100vh;overflow:auto;border-right:1px solid var(--line);background:var(--panel);padding:24px}.desktop{min-width:0;background:#101828}.desktop iframe{width:100%;height:100%;border:0;display:block}.markdown{line-height:1.55}.markdown h2{margin-top:28px}.markdown code{border-radius:4px;background:#eef2f7;padding:2px 5px}.metadata{display:grid;grid-template-columns:100px 1fr;grid-gap:8px 12px;gap:8px 12px;margin:0 0 20px}.metadata dt{color:var(--muted);font-weight:800}.metadata dd{margin:0}@media (max-width:900px){.workspace-layout{grid-template-columns:1fr;grid-template-rows:42vh 58vh}.instructions{height:42vh;border-right:0;border-bottom:1px solid var(--line)}}