.bb-shell[data-astro-cid-nsahqfcm]{background:#f8fafc;color:#172033}.bb-hero[data-astro-cid-nsahqfcm]{display:flex;align-items:center;background:linear-gradient(180deg,#fff,#f8fafc);border-bottom:1px solid #dbe3ec}.bb-hero-inner[data-astro-cid-nsahqfcm]{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:72px 0 44px}.bb-eyebrow[data-astro-cid-nsahqfcm],.bb-level[data-astro-cid-nsahqfcm]{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.78rem;font-weight:800;text-transform:uppercase;color:#1e3a8a}.bb-eyebrow[data-astro-cid-nsahqfcm]{display:inline-flex;margin:0;padding:4px 10px;border-radius:6px;background-color:#1e3a8a1a;line-height:1.1;letter-spacing:0}.bb-hero[data-astro-cid-nsahqfcm] h1[data-astro-cid-nsahqfcm]{max-width:860px;margin:18px 0 22px;color:#1f4e79;font-size:clamp(2.25rem,5.4vw,4.15rem);line-height:1.02;font-weight:900}.bb-dek[data-astro-cid-nsahqfcm]{max-width:820px;color:#334155;font-size:1.2rem;line-height:1.65}.bb-hero-note[data-astro-cid-nsahqfcm]{display:inline-flex;margin-top:32px;padding:10px 14px;border:1px solid #fbbf24;border-radius:999px;color:#92400e;background:#fffbeb;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.9rem;font-weight:700}.bb-stats[data-astro-cid-nsahqfcm]{width:min(1120px,calc(100% - 32px));margin:24px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.bb-stats[data-astro-cid-nsahqfcm] div[data-astro-cid-nsahqfcm],.g00-panel[data-astro-cid-nsahqfcm],.interval-demo[data-astro-cid-nsahqfcm]{background:#fff;border:1px solid #dbe3ec;border-radius:8px;box-shadow:0 12px 28px #0f172a14}.bb-stats[data-astro-cid-nsahqfcm] div[data-astro-cid-nsahqfcm]{padding:18px}.bb-stats[data-astro-cid-nsahqfcm] 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h2[data-astro-cid-nsahqfcm],.plain-copy[data-astro-cid-nsahqfcm] h2[data-astro-cid-nsahqfcm],.bb-copy[data-astro-cid-nsahqfcm] h2[data-astro-cid-nsahqfcm],.section-intro[data-astro-cid-nsahqfcm] h2[data-astro-cid-nsahqfcm]{margin:8px 0 14px;color:#1f4e79;font-size:clamp(1.55rem,3vw,2.15rem);line-height:1.12;font-weight:900}.copy-stack[data-astro-cid-nsahqfcm]{display:grid;gap:10px}.copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.bb-copy[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.section-intro[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{margin:0;color:#475569;line-height:1.7;font-size:1.04rem}.guide-copy[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.plain-copy[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{max-width:none}.bb-copy[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm]{grid-template-columns:1fr;row-gap:12px}.section-intro[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm]{grid-template-columns:repeat(2,minmax(0,1fr));-moz-column-gap:34px;column-gap:34px;row-gap:12px}.bb-copy[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.section-intro[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{max-width:none}.guide-grid[data-astro-cid-nsahqfcm],.plain-checks[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.guide-grid[data-astro-cid-nsahqfcm] article[data-astro-cid-nsahqfcm],.plain-checks[data-astro-cid-nsahqfcm] article[data-astro-cid-nsahqfcm],.proof-steps[data-astro-cid-nsahqfcm] article[data-astro-cid-nsahqfcm]{border:1px solid #dbe3ec;border-radius:8px;padding:16px 18px 17px;background:#ffffffd1;box-shadow:0 10px 22px #0f172a0b}.guide-grid[data-astro-cid-nsahqfcm] h3[data-astro-cid-nsahqfcm],.plain-checks[data-astro-cid-nsahqfcm] h3[data-astro-cid-nsahqfcm],.proof-steps[data-astro-cid-nsahqfcm] h3[data-astro-cid-nsahqfcm]{margin:0 0 10px;color:#0f172a;font-size:1rem;font-weight:900;line-height:1.2}.guide-grid[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.plain-checks[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm],.proof-steps[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{margin:0;color:#475569;font-size:.94rem;line-height:1.55}.time-emergence[data-astro-cid-nsahqfcm]{width:min(1120px,calc(100% - 32px));margin:28px auto 0;display:grid;grid-template-columns:1fr;gap:22px;align-items:center;padding:22px;border:1px solid #dbe3ec;border-radius:8px;background:linear-gradient(135deg,#0f172afa,#1f4e79f0),radial-gradient(circle at 8% 0%,rgba(251,191,36,.24),transparent 32%);box-shadow:0 16px 34px #0f172a21}.time-emergence[data-astro-cid-nsahqfcm] .bb-level[data-astro-cid-nsahqfcm]{color:#fbbf24}.time-emergence[data-astro-cid-nsahqfcm] h2[data-astro-cid-nsahqfcm]{margin:8px 0 12px;color:#fff;font-size:clamp(1.45rem,2.3vw,1.95rem);line-height:1.08;font-weight:900}.time-emergence[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{margin:0;color:#dbeafe;line-height:1.68;font-size:1rem}.time-emergence[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm]{grid-template-columns:1fr;row-gap:12px}.time-flow[data-astro-cid-nsahqfcm]{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.time-flow[data-astro-cid-nsahqfcm] span[data-astro-cid-nsahqfcm],.time-flow[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{border-radius:999px;padding:9px 12px;line-height:1}.time-flow[data-astro-cid-nsahqfcm] span[data-astro-cid-nsahqfcm]{border:1px solid rgba(219,234,254,.25);color:#dbeafe;background:#ffffff0f;font-size:.78rem;font-weight:850;text-transform:uppercase}.time-flow[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{color:#0f172a;background:#fde68a;font-size:.96rem;font-weight:950}.time-flow[data-astro-cid-nsahqfcm] i[data-astro-cid-nsahqfcm]{color:#38bdf8;font-style:normal;font-weight:950}.bb-band[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:.82fr 1.18fr;gap:32px;align-items:center}.bb-band-alt[data-astro-cid-nsahqfcm]{align-items:start}.g00-panel[data-astro-cid-nsahqfcm]{margin:0;padding:16px}.g00-panel[data-astro-cid-nsahqfcm] svg[data-astro-cid-nsahqfcm]{display:block;width:100%;height:auto}.g00-panel[data-astro-cid-nsahqfcm] figcaption[data-astro-cid-nsahqfcm]{margin-top:12px;color:#475569;font-size:.92rem;line-height:1.55}.svg-muted[data-astro-cid-nsahqfcm],.svg-small[data-astro-cid-nsahqfcm],.svg-blue[data-astro-cid-nsahqfcm],.svg-orange[data-astro-cid-nsahqfcm],.svg-green[data-astro-cid-nsahqfcm]{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.svg-muted[data-astro-cid-nsahqfcm]{fill:#475569;font-size:16px}.svg-small[data-astro-cid-nsahqfcm]{fill:#64748b;font-size:13px}.svg-blue[data-astro-cid-nsahqfcm]{fill:#1f4e79;font-size:13px;font-weight:800}.svg-orange[data-astro-cid-nsahqfcm]{fill:#d97706;font-size:18px;font-weight:800}.svg-orange[data-astro-cid-nsahqfcm].small{font-size:14px}.svg-green[data-astro-cid-nsahqfcm]{fill:#15803d;font-size:18px;font-weight:800}.interval-demo[data-astro-cid-nsahqfcm]{padding:20px}.sliders[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.sliders[data-astro-cid-nsahqfcm] label[data-astro-cid-nsahqfcm] span[data-astro-cid-nsahqfcm]{display:block;margin-bottom:8px;color:#64748b;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.78rem;font-weight:850;text-transform:uppercase}.sliders[data-astro-cid-nsahqfcm] input[data-astro-cid-nsahqfcm]{width:100%}.interval-cards[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.interval-cards[data-astro-cid-nsahqfcm] div[data-astro-cid-nsahqfcm]{padding:14px;border:1px solid #dbe3ec;border-radius:8px;background:#f8fafc}.interval-cards[data-astro-cid-nsahqfcm] span[data-astro-cid-nsahqfcm],.interval-cards[data-astro-cid-nsahqfcm] em[data-astro-cid-nsahqfcm]{display:block;color:#64748b;font-size:.78rem;font-weight:800;text-transform:uppercase;font-style:normal}.interval-cards[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{display:block;margin:8px 0;color:#0f172a;font-size:1.25rem}.interval-cards[data-astro-cid-nsahqfcm] i[data-astro-cid-nsahqfcm]{display:block;height:8px;overflow:hidden;border-radius:999px;background:#e2e8f0;font-style:normal}.interval-cards[data-astro-cid-nsahqfcm] b[data-astro-cid-nsahqfcm]{display:block;height:100%;border-radius:inherit;background:#1f4e79}.interval-cards[data-astro-cid-nsahqfcm] div[data-astro-cid-nsahqfcm]:nth-child(2) b[data-astro-cid-nsahqfcm]{background:#d97706}.interval-formula[data-astro-cid-nsahqfcm]{margin:16px 0 0;padding:10px 12px;border:1px solid #dbe3ec;border-radius:8px;background:#fff;color:#1f4e79;font-weight:850;text-align:center}.interval-reading[data-astro-cid-nsahqfcm]{margin:12px 0 0;color:#475569;line-height:1.58}.section-intro[data-astro-cid-nsahqfcm]{max-width:none;margin-bottom:20px}.proof-steps[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.proof-steps[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{display:inline-flex;margin-bottom:12px;padding:6px 9px;border-radius:999px;background:#eff6ff;color:#1f4e79;font-size:.82rem}.equation-panel[data-astro-cid-nsahqfcm]{margin-top:18px;padding:20px;border:1px solid #dbe3ec;border-radius:8px;background:#fff;box-shadow:0 12px 28px #0f172a0f}.equation-panel[data-astro-cid-nsahqfcm] h3[data-astro-cid-nsahqfcm]{margin:0 0 14px;color:#1f4e79;font-size:1.15rem;font-weight:900}.equation-grid[data-astro-cid-nsahqfcm]{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.equation-grid[data-astro-cid-nsahqfcm] article[data-astro-cid-nsahqfcm]{padding:14px;border:1px solid #dbe3ec;border-radius:8px;background:#f8fafc}.equation-grid[data-astro-cid-nsahqfcm] span[data-astro-cid-nsahqfcm]{display:block;margin-bottom:8px;color:#64748b;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.74rem;font-weight:850;text-transform:uppercase}.equation-grid[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{display:block;color:#0f172a;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.98rem;line-height:1.45}.equation-grid[data-astro-cid-nsahqfcm] p[data-astro-cid-nsahqfcm]{margin:8px 0 0;color:#475569;font-size:.9rem;line-height:1.55}.status-band[data-astro-cid-nsahqfcm]{align-items:start;padding:24px;border:1px solid #dbe3ec;border-radius:8px;background:#fff;box-shadow:0 12px 28px #0f172a0f}.source-links[data-astro-cid-nsahqfcm]{display:grid;gap:10px}.source-links[data-astro-cid-nsahqfcm] h3[data-astro-cid-nsahqfcm]{margin:0 0 4px;color:#0f172a;font-size:1rem;font-weight:900}.source-links[data-astro-cid-nsahqfcm] a[data-astro-cid-nsahqfcm]{display:block;padding:12px 14px;border:1px solid #dbe3ec;border-radius:8px;color:#1f4e79;background:#f8fafc;font-weight:800;text-decoration:none}.source-links[data-astro-cid-nsahqfcm] a[data-astro-cid-nsahqfcm]:hover{border-color:#1f4e79}@media(max-width:900px){.bb-stats[data-astro-cid-nsahqfcm],.guide-grid[data-astro-cid-nsahqfcm],.plain-checks[data-astro-cid-nsahqfcm],.time-emergence[data-astro-cid-nsahqfcm],.bb-band[data-astro-cid-nsahqfcm],.proof-steps[data-astro-cid-nsahqfcm],.equation-grid[data-astro-cid-nsahqfcm]{grid-template-columns:1fr}.time-flow[data-astro-cid-nsahqfcm]{justify-content:flex-start}.bb-copy[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm],.section-intro[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm],.time-emergence[data-astro-cid-nsahqfcm] .copy-stack[data-astro-cid-nsahqfcm],.interval-cards[data-astro-cid-nsahqfcm],.sliders[data-astro-cid-nsahqfcm]{grid-template-columns:1fr}}@media(max-width:640px){.bb-hero-inner[data-astro-cid-nsahqfcm]{padding:48px 0 34px}.bb-stats[data-astro-cid-nsahqfcm] strong[data-astro-cid-nsahqfcm]{font-size:1.2rem}.bb-band[data-astro-cid-nsahqfcm],.time-emergence[data-astro-cid-nsahqfcm],.status-band[data-astro-cid-nsahqfcm]{gap:20px;padding:18px}}