.guide-hero {
  position: relative;
  overflow-x: clip;
  padding-top: 72px;
  padding-bottom: 76px;
  border-bottom: 1px solid var(--color-border-soft);
  background:
    radial-gradient(circle at 82% 32%, var(--color-glow-blue), transparent 30rem),
    linear-gradient(180deg, var(--color-canvas), var(--color-canvas-deep));
}

.guide-hero::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(var(--color-border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-soft) 1px, transparent 1px);
  background-size: 54px 54px;
  opacity: 0.16;
  mask-image: linear-gradient(90deg, transparent, var(--color-white) 58%, transparent);
}

.guide-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(430px, 0.78fr);
  gap: 70px;
  align-items: center;
}

.guide-hero-copy {
  max-width: 690px;
}

.guide-hero-copy h1 {
  max-width: 650px;
}

.guide-hero-copy .lead {
  margin-bottom: 0;
}

.guide-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.guide-intro-link {
  max-width: 660px;
  margin: 24px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--color-success);
  font-size: 14px;
}

.guide-intro-link a {
  color: var(--color-success);
  text-decoration: underline;
  text-decoration-color: var(--color-border);
  text-underline-offset: 0.18em;
}

.decision-window {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-window);
}

.decision-window::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  content: "";
  box-shadow: inset 0 1px 0 var(--color-border-soft);
}

.decision-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 54px;
  padding: 0 18px;
  border-bottom: 1px solid var(--color-border-soft);
  background: linear-gradient(90deg, var(--color-panel), var(--color-panel-raised));
}

.decision-chrome strong {
  margin-left: 8px;
  font-size: 13px;
}

.decision-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
}

.decision-dot:first-child {
  background: var(--color-error);
}

.decision-dot:nth-child(2) {
  background: var(--color-warn);
}

.decision-dot:nth-child(3) {
  background: var(--color-success);
}

.decision-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 750;
}

.decision-state::before {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  content: "";
  background: var(--color-success);
  box-shadow: 0 0 12px var(--color-success);
}

.decision-body {
  display: grid;
  gap: 7px;
  padding: 10px;
}

.decision-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  gap: 13px;
  align-items: center;
  min-height: 68px;
  padding: 10px 12px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-sm);
  background: var(--color-panel-subtle);
}

.decision-row.is-active {
  border-color: var(--color-accent-bright);
  background: linear-gradient(90deg, var(--color-panel-selected), var(--color-panel-raised));
  box-shadow: inset 3px 0 0 var(--color-success);
}

.decision-code {
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.05em;
}

.decision-row div {
  display: grid;
  gap: 2px;
}

.decision-row strong {
  font-size: 14px;
}

.decision-row small {
  color: var(--color-text-faint);
  font-size: 11px;
}

.decision-mark {
  padding: 4px 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.decision-footer {
  min-height: 48px;
  padding: 13px 18px;
  border-top: 1px solid var(--color-border-soft);
  color: var(--color-text-muted);
  background: var(--color-panel-subtle);
  font-family: var(--font-mono);
  font-size: 10px;
}

.guide-shell {
  padding-top: 34px;
  padding-bottom: var(--section-space);
}

.guide-shell > .toc-tabs {
  margin-bottom: 0;
}

.guide-article {
  width: 100%;
  max-width: 940px;
  margin-inline: auto;
}

.guide-section {
  padding-top: 90px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border-soft);
}

.guide-section:last-child {
  border-bottom: 0;
}

.guide-section > h2 {
  max-width: 780px;
}

.guide-section > h3 {
  margin-top: 42px;
  font-size: clamp(22px, 2.5vw, 29px);
}

.guide-section > p {
  font-size: 17px;
  line-height: 1.95;
}

.guide-section .table-scroll {
  margin: 34px 0;
}

.guide-section .callout {
  margin-top: 34px;
  margin-bottom: 34px;
}

.guide-section pre {
  margin-top: 30px;
  margin-bottom: 30px;
}

.guide-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 54px;
  padding: 28px;
  border: 1px solid var(--color-accent-bright);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--color-panel-raised), var(--color-panel));
  box-shadow: var(--shadow-card);
}

.guide-actions .mono {
  display: block;
  margin-bottom: 8px;
  color: var(--color-success);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.guide-actions h3 {
  margin-bottom: 8px;
  font-size: clamp(24px, 3vw, 32px);
}

.guide-actions p {
  max-width: 570px;
  margin-bottom: 0;
}

.guide-actions .button-row {
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .guide-hero-layout {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .guide-hero-copy {
    max-width: 760px;
  }

  .decision-window {
    max-width: 720px;
  }
}

@media (max-width: 768px) {
  .guide-hero {
    padding-top: 52px;
    padding-bottom: 58px;
  }

  .guide-section {
    padding-top: 72px;
  }

  .guide-section > p {
    font-size: 16px;
    line-height: 1.88;
  }

  .guide-actions {
    grid-template-columns: 1fr;
  }

  .guide-actions .button-row {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .guide-hero {
    padding-top: 40px;
    padding-bottom: 46px;
  }

  .guide-hero-layout {
    gap: 34px;
  }

  .guide-intro-link {
    padding-left: 14px;
  }

  .decision-row {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .decision-mark {
    display: none;
  }

  .decision-chrome {
    padding-inline: 12px;
  }

  .decision-state {
    font-size: 9px;
  }

  .guide-shell {
    padding-top: 22px;
  }

  .guide-section {
    padding-top: 58px;
  }

  .guide-section > h3 {
    margin-top: 34px;
  }

  .guide-section > p {
    font-size: 15px;
  }

  .guide-actions {
    padding: 22px 18px;
  }

  .guide-actions .button {
    width: 100%;
  }
}