.docs-hero { padding: clamp(4rem, 9vw, 7rem) 0; border-bottom: 1px solid var(--ink); }
.docs-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.42fr); gap: clamp(2rem, 7vw, 6rem); align-items: end; }
.docs-hero h1 { max-width: 12ch; margin: 0; font-family: "Newsreader", Georgia, serif; font-size: clamp(3.6rem, 8vw, 7rem); font-weight: 500; line-height: 0.88; letter-spacing: -0.065em; }
.docs-hero .lede { max-width: 47rem; margin: 1.6rem 0 0; color: var(--soft); font-size: clamp(1rem, 2vw, 1.2rem); line-height: 1.7; }
.docs-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 2rem; }
.docs-button { display: inline-flex; min-height: 3rem; align-items: center; justify-content: center; border: 1px solid var(--ink); padding: 0.75rem 1rem; background: var(--raised); box-shadow: 3px 3px 0 var(--ink); font-size: 0.75rem; font-weight: 800; text-decoration: none; }
.docs-button-primary { background: var(--signal); color: var(--ink); }
.boundary-card { border: 1px solid var(--ink); padding: 1.5rem; background: var(--raised); box-shadow: 7px 7px 0 var(--ink); }
.boundary-card span, .section-number { color: var(--signal-dark); font: 600 0.66rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.boundary-card strong { display: block; margin: 1.3rem 0 0.6rem; font-family: "Newsreader", Georgia, serif; font-size: 2rem; font-weight: 500; }
.boundary-card p { margin: 0; color: var(--soft); font-size: 0.82rem; line-height: 1.65; }
.boundary-card code { color: var(--ink); font-family: var(--mono); font-size: 0.75rem; }

.docs-layout { display: grid; grid-template-columns: minmax(12rem, 0.28fr) minmax(0, 0.72fr); gap: clamp(2rem, 7vw, 6rem); padding-block: clamp(3rem, 7vw, 6rem); }
.docs-toc { align-self: start; position: sticky; top: 2rem; border-left: 1px solid var(--line); padding-left: 1rem; }
.docs-toc strong { display: block; margin-bottom: 0.7rem; color: var(--signal-dark); font: 600 0.62rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.docs-toc a { display: block; padding: 0.5rem 0; color: var(--soft); font-size: 0.75rem; font-weight: 700; text-decoration: none; }
.docs-toc a:hover { color: var(--signal-dark); }
.docs-copy { min-width: 0; }
.docs-copy section { scroll-margin-top: 2rem; padding: 0 0 3.5rem; }
.docs-copy section + section { padding-top: 3.5rem; border-top: 1px solid var(--line); }
.docs-copy h2 { max-width: 18ch; margin: 0.4rem 0 1rem; font-family: "Newsreader", Georgia, serif; font-size: clamp(2.3rem, 5vw, 4.2rem); font-weight: 500; line-height: 0.98; letter-spacing: -0.055em; }
.docs-copy p, .docs-copy li { color: var(--soft); font-size: 0.9rem; line-height: 1.78; }
.docs-copy p { margin: 0.85rem 0; }
.docs-copy strong { color: var(--ink); }
.docs-copy code { font-family: var(--mono); font-size: 0.82em; }
.docs-copy pre { overflow: auto; margin: 1.4rem 0; border: 1px solid var(--ink); padding: 1.3rem; background: #202421; color: #f8f3e8; box-shadow: 5px 5px 0 var(--signal); white-space: pre; }
.docs-copy pre code { font-size: 0.74rem; line-height: 1.75; }
.callout { margin: 1.4rem 0; border-left: 4px solid var(--signal); padding: 1rem 1.1rem; background: var(--raised); }
.callout p { margin: 0.25rem 0 0; }
.docs-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.8rem; margin: 1.4rem 0; }
.docs-grid > div { border: 1px solid var(--line); padding: 1rem; background: var(--raised); }
.docs-grid p { margin-bottom: 0; font-size: 0.78rem; }
.docs-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; font-size: 0.8rem; font-weight: 700; }
.error-panel { margin: 1.5rem 0; border: 1px solid var(--ink); padding: clamp(1.1rem, 3vw, 1.65rem); background: var(--raised); box-shadow: 5px 5px 0 var(--signal); }
.error-panel-label { color: var(--signal-dark); font: 600 0.66rem var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.error-panel h3 { margin: 0.65rem 0 0.45rem; font-family: "Newsreader", Georgia, serif; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 500; line-height: 1.1; }
.error-panel p { margin: 0.4rem 0; }
.error-panel .error-next { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: 1rem; color: var(--ink); }

@media (max-width: 52rem) {
  .docs-hero-grid, .docs-layout { grid-template-columns: 1fr; }
  .docs-hero { padding-block: 3.25rem; }
  .docs-hero-grid { gap: 1.5rem; }
  .docs-toc { position: static; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .docs-toc strong { grid-column: 1 / -1; }
  .docs-grid { grid-template-columns: 1fr; }
}

@media (max-width: 32rem) {
  .docs-hero { padding-block: 2.75rem; }
  .docs-hero h1 { font-size: clamp(2.75rem, 12vw, 3.4rem); }
  .docs-actions, .docs-button { width: 100%; }
  .docs-layout { gap: 2.5rem; padding-top: 2.5rem; }
  .docs-toc { column-gap: 1rem; }
  .docs-toc a { padding-block: 0.4rem; }
  .docs-copy pre { margin-inline: -0.25rem; padding: 1rem 0.8rem; }
}