.lab-intro{padding:28px 32px;background:var(--brand-ink);color:white;border-left:5px solid var(--secondary);border-radius:8px;margin-bottom:25px}.lab-intro h2{font-size:clamp(1.6rem,3vw,2.2rem);max-width:800px;margin:12px 0}.lab-intro p{color:#e7e5dd;max-width:860px}.lab-intro .help-text{margin-bottom:0;color:#d2d8cb}.lab-badge{font:12px Consolas,monospace;letter-spacing:.13em;color:#e0c29b}.lab-toolbar{padding:20px;background:white;border:1px solid var(--line);border-radius:8px}.lab-section-title{display:flex;align-items:baseline;justify-content:space-between;gap:15px;flex-wrap:wrap}.lab-selected td,.lab-selected th{background:#f0eadc!important}.lab-exception{color:#9d342a;font-weight:700}.lab-trace{scroll-margin-top:120px}.interval-row{display:grid;grid-template-columns:160px 1fr 80px;align-items:center;gap:15px;font-size:.78rem;margin:18px 0}.interval-row strong{text-align:right}.interval-track{height:28px;background:repeating-linear-gradient(90deg,#eeeae2 0%,#eeeae2 calc(25% - 1px),#c5c0b5 calc(25% - 1px),#c5c0b5 25%);position:relative;border-radius:3px}.interval-track i{position:absolute;height:100%;display:block;min-width:1px;border-radius:3px}.interval-rental{background:#9d4238}.interval-maintenance{background:#667248}.interval-either{background:#42352f}.interval-axis{display:flex;justify-content:space-between;gap:14px;font-size:.7rem;color:#645e53;margin-top:20px}.lab-trace details{margin-top:18px}.lab-trace summary{cursor:pointer;font-weight:600;color:var(--accent)}.lab-trace details p{margin-top:15px}.lab-code-layout{display:grid;grid-template-columns:minmax(0,2.3fr) minmax(250px,1fr);gap:24px;margin-top:24px;align-items:start}.lab-code-tabs,.lab-code-actions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.lab-code-tabs button[aria-pressed=true]{background:var(--accent);color:white}.lab-code-panel .lab-sql{max-height:680px;overflow:auto;white-space:pre;font:12px/1.7 Consolas,monospace;padding:20px 14px;background:#202a2e;color:#e9ede9;tab-size:4}.sql-number{display:inline-block;width:35px;text-align:right;margin-right:18px;color:#8d9d98;user-select:none}.sql-comment{color:#b0c5a3}.lab-walkthrough{padding:20px 0}.lab-walkthrough h2{font-size:1.25rem}.lab-walkthrough article{border-left:3px solid var(--secondary);padding-left:18px;margin-top:24px}.lab-walkthrough h3{font-size:.95rem;margin-bottom:9px}.lab-walkthrough p{font-size:.86rem;line-height:1.7}.lab-engineering .schema-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.lab-engineering .schema-table ul{overflow-wrap:anywhere;font-size:.73rem}.lab-engineering h3{margin-top:15px}.lab-engineering .schema-table h3{margin-top:0}.lab-code-panel .help-text{font-size:.8rem}.lab-code-actions{margin-bottom:0}
@media(max-width:1000px){.lab-code-layout{grid-template-columns:1fr}.lab-walkthrough{display:grid;grid-template-columns:1fr 1fr;gap:20px}.lab-walkthrough h2{grid-column:1/-1}.lab-walkthrough article{margin:0}.lab-engineering .schema-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.lab-intro{padding:22px}.interval-row{grid-template-columns:1fr 65px;gap:8px}.interval-row>span{grid-column:1/-1}.interval-axis{flex-direction:column;gap:4px}.lab-walkthrough,.lab-engineering .schema-grid{grid-template-columns:1fr}.lab-code-panel .lab-sql{font-size:11px;max-height:480px}.sql-number{width:25px;margin-right:10px}.lab-trace{scroll-margin-top:160px}}
@media print{.lab-code-layout{display:block}.lab-code-panel .lab-sql{max-height:none;overflow:visible;white-space:pre-wrap}.lab-code-tabs,.lab-code-actions{display:none}}
