/* Product entry points: usage, diagnosis, then the supporting evidence. */
.hero { max-width: 1120px; padding-top: calc(var(--nav-height) + 48px); padding-bottom: 64px; }
.hero__identity { margin-bottom: 24px; gap: 14px; }
.hero__logo { width: 56px; }
.hero__brand { font-size: 2.25rem; }
.hero__title { max-width: 25ch; font-size: clamp(2.1rem, 4.8vw, 3.6rem); }
.hero__actions { margin-bottom: 16px; }
.hero__open-source { max-width: 42em; font-size: .8125rem; color: var(--text-secondary); }
.hero__stats { margin-top: 28px; }
.hero__proof { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 16px 24px; margin-top: 28px; }
.hero__proof .hero__badge, .hero__proof .hero__partners { margin: 0; }
.hero__proof .hero__partners { background: none; border: 0; padding: 0; gap: 12px; }
.hero__proof .hero__partner-logo { width: 88px; height: 30px; border-radius: 4px; }
.hero__proof .hero__partner-logo--bytedance { width: 116px; }
.hero__proof .hero__badge { padding: 7px 12px; }
.hero__proof .hero__badge-award { font-size: .8125rem; }
.quickstart, .rootcause { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 64px 24px 80px; scroll-margin-top: 70px; }
.quickstart .section-header, .rootcause .section-header { margin-bottom: 32px; }
.quickstart__deck { border: 1px solid var(--border); border-radius: 18px; background: var(--bg-surface); overflow: hidden; box-shadow: var(--card-shadow); }
.quickstart__panels { display: grid; }
.quickstart__panel { grid-area: 1 / 1; min-width: 0; padding: 32px; min-height: 520px; animation: quickstart-in .18s ease-out; }
.quickstart__panel[hidden] { display: block; visibility: hidden; pointer-events: none; animation: none; }
.quickstart__panel-heading { margin-bottom: 24px; }
.quickstart__eyebrow { display: block; margin-bottom: 12px; font: 500 12px var(--font-mono); color: var(--blue-400); }
.quickstart__panel-heading h3 { margin-bottom: 10px; font-size: clamp(23px, 3vw, 30px); letter-spacing: -.025em; line-height: 1.25; color: var(--text-heading); }
.quickstart__panel-heading p { color: var(--text-secondary); font-size: 15px; line-height: 1.65; }
.quickstart__code { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--bg-surface-alt); margin-bottom: 16px; }
.quickstart__code-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 12px; color: var(--text-secondary); }
.quickstart__code-header button { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; color: var(--text-heading); background: var(--bg-surface); font: 500 12px var(--font-sans); cursor: pointer; min-height: 32px; }
.quickstart__code-header button:hover { border-color: var(--blue-400); }
.quickstart__code pre { padding: 18px; white-space: pre-wrap; overflow-wrap: anywhere; font: 13px/1.9 var(--font-mono); color: var(--text-body); }
.quickstart__code--prompt pre { font-size: 15px; line-height: 1.8; }
.quickstart__hint { font-size: 13px; line-height: 1.75; color: var(--text-secondary); margin-bottom: 12px; }
.quickstart__link { color: var(--blue-400); font-size: 14px; font-weight: 600; text-underline-offset: 4px; }
.quickstart__report-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; margin-bottom: 24px; }
.quickstart__finding-label { display: block; color: var(--green-500); font: 600 13px var(--font-sans); margin-bottom: 12px; }
.quickstart__finding h4 { color: var(--text-heading); font-size: clamp(23px, 2.6vw, 30px); line-height: 1.25; letter-spacing: -.025em; margin-bottom: 14px; }
.quickstart__finding p { font-size: 14px; line-height: 1.75; color: var(--text-secondary); }
.quickstart__validation { margin-top: 20px; padding-left: 16px; border-left: 2px solid var(--green-500); }
.quickstart__validation strong { display: block; color: var(--text-heading); font-size: 13px; margin-bottom: 5px; }
.quickstart__evidence { min-width: 0; padding: 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-surface-alt); }
.quickstart__evidence h4 { color: var(--text-heading); font-size: 14px; margin-bottom: 16px; }
.quickstart__evidence ol { list-style: none; display: grid; gap: 16px; }
.quickstart__evidence a { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px; color: var(--text-secondary); font-size: 12px; text-decoration: none; }
.quickstart__evidence a span { color: var(--blue-400); }
.quickstart__evidence a:hover { text-decoration: underline; }
.quickstart__evidence code { display: block; margin-top: 6px; font: 12px/1.7 var(--font-mono); color: var(--text-heading); overflow-wrap: anywhere; }
.quickstart__evidence mark { color: var(--text-heading); background: color-mix(in srgb, var(--green-500) 18%, transparent); border-radius: 3px; padding: 2px 4px; }
.quickstart__evidence > p { font-size: 12px; line-height: 1.6; color: var(--text-secondary); margin-top: 18px; }
.quickstart__controls { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; gap: 16px; align-items: center; border-top: 1px solid var(--border); padding: 16px 20px; }
.quickstart__tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.quickstart__controls button { border: 1px solid var(--border); border-radius: 8px; background: transparent; color: var(--text-secondary); cursor: pointer; min-height: 44px; padding: 10px 12px; font: 500 13px/1.4 var(--font-sans); }
.quickstart__controls button:hover { background: var(--glass-hover); color: var(--text-heading); }
.quickstart__tabs button { border-color: transparent; }
.quickstart__tabs button span { margin-right: 6px; font: 500 11px var(--font-mono); }
.quickstart__tabs button[aria-selected="true"] { color: var(--text-heading); border-color: var(--blue-400); background: color-mix(in srgb, var(--blue-500) 12%, transparent); }
.quickstart__sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@keyframes quickstart-in { from { opacity: .5; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.quickstart__copy-status { min-height: 1.5em; margin-top: 10px; color: var(--text-secondary); font-size: 13px; }
.quickstart :is(button, a, [role="tabpanel"]):focus-visible, .rootcause__next a:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 4px; }
.rootcause__card-intro { padding: 14px 22px; color: var(--text-secondary); font-size: 13px; line-height: 1.6; }
.rootcause__next { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin: 28px 0 20px; }
.rootcause__next p { color: var(--text-heading); font-size: 15px; }
.rootcause__note { max-width: 85ch; line-height: 1.7; }
.trace-section, .impact, .bitwise-section, .workflow { scroll-margin-top: 90px; }
.impact__inner { grid-template-columns: minmax(0, 1fr); }
.impact__inner > * { min-width: 0; }
@media (max-width: 700px) {
  .quickstart__report-grid { grid-template-columns: 1fr; gap: 16px; }
  .quickstart, .rootcause { padding: 40px 18px 48px; }
  .quickstart__panel { padding: 22px 18px; min-height: 0; }
  .quickstart__code--prompt pre { font-size: 13px; }
  .quickstart__controls { grid-template-columns: 1fr auto 1fr; gap: 12px; padding: 14px; }
  .quickstart__tabs { grid-column: 1 / -1; grid-row: 1; gap: 4px; }
  .quickstart__tabs button { padding: 10px 5px; font-size: 12px; }
  .quickstart__tabs button span { display: block; margin: 0 0 4px; }
  .hero { padding: calc(var(--nav-height) + 32px) 20px 40px; }
  .hero__title { font-size: clamp(2rem, 7vw, 3rem); }
  .hero__proof { gap: 20px; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { padding: 12px 18px; }
  .rootcause__next { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .quickstart__panel { animation: none; }
}