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.4rem}.bt-eyebrow-key{color:var(--color-primary);letter-spacing:.22em}.bt-eyebrow-pair{display:inline-flex;gap:.4rem;align-items:baseline}.bt-eyebrow-k{color:color-mix(in oklab,var(--color-base-content) 50%,transparent)}.bt-eyebrow-v{color:var(--color-base-content);letter-spacing:.04em;text-transform:none;font-size:.78rem;font-variant-numeric:tabular-nums}.bt-trace{position:relative;height:76px;margin:.2rem 0 0}.bt-trace-svg{width:100%;height:100%;overflow:visible}.bt-lane{stroke:color-mix(in oklab,var(--color-base-content) 14%,transparent);stroke-width:1;stroke-dasharray:2 4}.bt-priv{stroke:color-mix(in oklab,var(--color-primary) 55%,var(--color-base-content));stroke-width:2.5;stroke-linecap:square}.bt-priv-riser{stroke:color-mix(in oklab,var(--color-primary) 55%,var(--color-base-content));stroke-width:1.5;stroke-dasharray:1 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color-mix(in oklab,var(--color-base-content) 14%,transparent)}.bt-tick{position:absolute;top:0;transform:translate(-50%);text-align:center;font-family:var(--font-mono);font-size:.62rem;color:color-mix(in oklab,var(--color-base-content) 55%,transparent);font-variant-numeric:tabular-nums}.bt-tick-line{display:block;width:1px;height:6px;background:color-mix(in oklab,var(--color-base-content) 35%,transparent);margin:0 auto .18rem}.bt-zoom{margin:.6rem 0 0;padding:.55rem .4rem;border:1px dashed color-mix(in oklab,var(--color-base-content) 18%,transparent);background:linear-gradient(180deg,color-mix(in oklab,var(--color-primary) 4%,transparent),transparent 80%)}.bt-zoom-meta{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin:0 0 .45rem;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase}.bt-zoom-key{color:var(--color-primary)}.bt-zoom-range{color:color-mix(in oklab,var(--color-base-content) 65%,transparent);font-variant-numeric:tabular-nums;text-transform:none;letter-spacing:.04em;font-size:.74rem}.bt-zoom-track{position:relative;height:64px;border-top:1px solid color-mix(in oklab,var(--color-base-content) 18%,transparent);border-bottom:1px solid color-mix(in oklab,var(--color-base-content) 18%,transparent)}.bt-zoom-phase{position:absolute;top:0;bottom:0;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:.3rem .5rem;text-decoration:none;color:color-mix(in oklab,var(--color-base-content) 80%,transparent);border-left:1px solid color-mix(in oklab,var(--color-base-content) 18%,transparent);transition:background .14s ease;overflow:hidden;gap:.18rem}.bt-zoom-phase-p0{background:color-mix(in oklab,var(--color-base-content) 4%,transparent)}.bt-zoom-phase-p1{background:color-mix(in oklab,var(--color-base-content) 9%,transparent)}.bt-zoom-phase:hover{background:color-mix(in oklab,var(--color-primary) 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oklab,var(--color-primary) 18%,transparent)!important}.bt-zoom-phase-hi .bt-zoom-phase-label{color:var(--color-primary)}.bt-cards{list-style:none;margin:1.5rem 0 0;padding:0;display:grid;gap:1.2rem}.bt-card{display:grid;grid-template-columns:4.2rem minmax(0,1fr);align-items:start;gap:1.1rem;padding:1rem .4rem 1.1rem;border-top:1px solid color-mix(in oklab,var(--color-base-content) 12%,transparent);scroll-margin-top:5.2rem}.bt-card:first-child{border-top:0;padding-top:.4rem}.bt-card-rail{display:flex;flex-direction:column;gap:.55rem;align-items:center;padding-top:.3rem}.bt-card-num{font-family:var(--font-serif);font-style:italic;font-weight:500;font-size:1.7rem;line-height:1;color:var(--color-primary);font-variant-numeric:tabular-nums}.bt-card-priv{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;padding:.18rem .45rem;border:1px solid color-mix(in oklab,var(--color-base-content) 22%,transparent);border-radius:999px;color:color-mix(in oklab,var(--color-base-content) 65%,transparent);background:color-mix(in oklab,var(--color-base-100) 70%,transparent)}.bt-card[data-priv=U] .bt-card-priv{color:var(--color-primary);border-color:color-mix(in oklab,var(--color-primary) 55%,transparent);background:color-mix(in oklab,var(--color-primary) 8%,transparent)}.bt-card-body{display:grid;gap:.55rem;min-width:0}.bt-card-eye{margin:0;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:color-mix(in oklab,var(--color-base-content) 60%,transparent)}.bt-card-title{margin:0;font-family:var(--font-serif);font-style:italic;font-weight:500;font-size:1.4rem;line-height:1.15;letter-spacing:-.005em}.bt-card-hi .bt-card-title{color:var(--color-primary)}.bt-card-range{margin:0;font-family:var(--font-mono);font-size:.74rem;color:color-mix(in oklab,var(--color-base-content) 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solid color-mix(in oklab,var(--color-primary) 22%,transparent);border-radius:2px;color:color-mix(in oklab,var(--color-primary) 60%,var(--color-base-content))}.bt-card-uart{margin:.2rem 0 0;padding:.7rem .85rem;border:1px solid color-mix(in oklab,var(--color-base-content) 14%,transparent);border-left:2px solid color-mix(in oklab,var(--color-primary) 55%,transparent);background:linear-gradient(180deg,color-mix(in oklab,var(--color-base-content) 4%,transparent),transparent);font-family:var(--font-mono);font-size:.74rem;line-height:1.55;color:color-mix(in oklab,var(--color-base-content) 88%,transparent);overflow-x:auto;white-space:pre-wrap;letter-spacing:.005em}.bt-card-uart code{background:transparent;border:0;padding:0;font-size:inherit;color:inherit}.bt-card-hi .bt-card-uart{border-left:2px solid var(--color-primary);background:linear-gradient(180deg,color-mix(in oklab,var(--color-primary) 6%,transparent),transparent);color:var(--color-base-content);font-size:.78rem}.bt-card-silent{margin:.2rem 0 0;padding:.5rem .7rem;font-family:var(--font-serif);font-size:.95rem;color:color-mix(in oklab,var(--color-base-content) 60%,transparent);border-left:2px dashed color-mix(in oklab,var(--color-base-content) 22%,transparent)}@media(max-width:760px){.article-prose>.boot-timeline{margin-left:-.5rem;margin-right:-.5rem}.boot-timeline{padding:1rem .4rem 1.1rem}.bt-trace{display:none}.bt-phasebar{height:30px;overflow-x:auto;overflow-y:hidden}.bt-card{grid-template-columns:3rem minmax(0,1fr);gap:.75rem}.bt-card-num{font-size:1.4rem}}