:root{--ink:#12233f;--muted:#58708f;--paper:#f5f8fc;--blue:#1266d8;--blue-deep:#093b82;--teal:#00a992;--amber:#f7b844;--red:#c54242;--line:#dbe5f2;--shadow:0 18px 45px rgba(18,35,63,.12)}*{box-sizing:border-box}body{margin:0;background:linear-gradient(160deg,#f5f8fc 0,#eef6fb 45%,#fdfbf6 100%);color:var(--ink);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}.site-header{padding:36px max(5vw,24px);background:var(--ink);color:white;display:flex;justify-content:space-between;gap:32px;align-items:end}.site-header h1{font-size:clamp(1.9rem,4vw,3rem);margin:0}.header-copy{max-width:420px;margin:0;color:#d6e5ff}.eyebrow{font-size:.73rem;font-weight:800;letter-spacing:.13em;margin:0 0 6px;color:var(--blue);text-transform:uppercase}.site-header .eyebrow{color:#7fcbff}main{max-width:1240px;margin:0 auto;padding:34px 24px 60px}.tabs{display:flex;gap:8px;margin-bottom:26px;border-bottom:1px solid 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0}.exam-question:first-child{border-top:0;padding-top:0}.result-table{width:100%;border-collapse:collapse;margin-top:15px}.result-table td,.result-table th{border-bottom:1px solid var(--line);text-align:left;padding:8px}.good{color:#08796a}.bad{color:var(--red)}footer{text-align:center;padding:25px;color:var(--muted);font-size:.88rem}@media(max-width:800px){.site-header,.section-heading{align-items:flex-start;flex-direction:column}.build-layout,.test-layout{grid-template-columns:1fr}.instruction-card{order:-1}.lab-image-wrap{overflow-x:auto}.lab-image-wrap img{min-width:550px}.hotspot{display:none}}