/* Scoped additions only. Existing Delta Arc navigation and articles are unchanged. */
.da-lab{padding:58px 0;scroll-margin-top:88px;border-top:1px solid #273349;border-bottom:1px solid #273349;background:linear-gradient(135deg,#111b2f,#0d111b 72%)}
.da-lab h2{max-width:800px;font-size:clamp(26px,4vw,38px)}
.da-lab .da-lab-intro{max-width:790px;margin:0 0 28px;font-size:17px;line-height:1.65}
.da-lab-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.da-lab-card{min-width:0;display:flex;flex-direction:column;padding:26px;border:1px solid #31405b;border-radius:16px;background:#111725}
.da-lab-number{display:block;color:#92b8ff;font-size:14px;letter-spacing:.12em;font-weight:800;margin-bottom:18px}
.da-lab-card h3{font-size:23px;line-height:1.2;color:#fff;margin:0 0 14px}
.da-lab-card p{font-size:15.5px;line-height:1.65;margin:0 0 18px}
.da-lab-card>a{margin-top:auto;min-height:44px;display:flex;align-items:center;gap:8px;color:#9fc1ff;font-weight:750;line-height:1.5}
.da-lab a:hover{color:#fff;text-decoration:underline}
.da-lab a:focus-visible,.da-lab-entry:focus-visible{outline:3px solid #b9d2ff;outline-offset:5px;border-radius:3px}
.da-lab .da-lab-note{font-size:13px;line-height:1.65;color:#b6bece;max-width:900px;margin:22px 0 0}
.da-lab-downloads{display:flex;gap:8px 26px;flex-wrap:wrap;margin-top:12px}
.da-lab-downloads a{display:inline-flex;align-items:center;min-height:44px;color:#9fc1ff;font-size:15px;font-weight:700;gap:8px}
.da-lab-compact{padding:30px 0;background:none;border:0}
.da-lab-panel{padding:28px;border:1px solid #31405b;border-radius:16px;background:linear-gradient(135deg,#18243b,#111725)}
.da-lab-panel>p{max-width:870px;margin-bottom:12px}
.da-lab-panel .da-lab-note{margin:12px 0 0}
.da-lab-panel h2{font-size:clamp(24px,3.5vw,32px)}
.card .da-lab-inline{margin-top:18px;padding-top:18px;border-top:1px solid #31405b;font-size:14px}
@media(max-width:760px){.da-lab-grid{grid-template-columns:1fr}.da-lab{padding:38px 0}.da-lab-card{padding:22px}.da-lab-compact{padding:20px 0}.da-lab-panel{padding:22px}.da-lab-downloads{gap:6px 20px}}
@media(prefers-reduced-motion:reduce){.da-lab a{transition:none}}