/* ============================================================
   Pajamas-aligned tokens
   Reference: design.gitlab.com (foundations: color, typography,
   spacing). Names mirror Pajamas where practical.
   ============================================================ */

:root {
  /* Neutrals */
  --gl-gray-10:  #fbfafd;
  --gl-gray-50:  #ececef;
  --gl-gray-100: #dcdcde;
  --gl-gray-200: #bfbfc3;
  --gl-gray-300: #a4a3a8;
  --gl-gray-400: #89888d;
  --gl-gray-500: #737278;
  --gl-gray-600: #5e5e62;
  --gl-gray-700: #525158;
  --gl-gray-800: #3a383f;
  --gl-gray-900: #28272d;
  --gl-gray-950: #18171d;

  /* Brand */
  --gl-tanzanite-50:  #f4f0ff;
  --gl-tanzanite-100: #e1d8f9;
  --gl-tanzanite-500: #6e49cb;
  --gl-tanzanite-600: #5e3bbf;
  --gl-tanzanite-700: #41277e;
  --gl-tanzanite-800: #2c1a55;
  --gl-tanzanite-900: #1f1245;

  --gl-tanuki-100: #ffe1cc;
  --gl-tanuki-200: #fcb494;
  --gl-tanuki-300: #f29263;
  --gl-tanuki-500: #fc6d26;
  --gl-tanuki-700: #b34f10;

  /* Semantic */
  --gl-blue-50:    #ebf3fc;
  --gl-blue-100:   #cbe2f9;
  --gl-blue-500:   #1f75cb;
  --gl-blue-700:   #0b5cad;
  --gl-green-50:   #ecf4ee;
  --gl-green-100:  #c5e1c8;
  --gl-green-500:  #108548;
  --gl-green-700:  #066535;
  --gl-orange-50:  #fdf1dd;
  --gl-orange-100: #f5d9a8;
  --gl-orange-500: #c17d10;
  --gl-orange-700: #8f4700;

  /* Surfaces / text / borders */
  --color-bg:             #ffffff;
  --color-surface:        var(--gl-gray-10);
  --color-surface-strong: var(--gl-gray-50);
  --color-text:           var(--gl-gray-900);
  --color-text-muted:     var(--gl-gray-700);
  --color-text-subtle:    var(--gl-gray-500);
  --color-border:         var(--gl-gray-100);
  --color-border-strong:  var(--gl-gray-200);
  --color-link:           var(--gl-blue-700);
  --color-link-hover:     var(--gl-blue-500);
  --color-accent:         var(--gl-tanzanite-500);
  --color-accent-strong:  var(--gl-tanzanite-700);

  /* Typography */
  --font-sans: 'GitLab Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'GitLab Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

  /* Spacing scale (4px base, Pajamas) */
  --gl-spacing-1: 0.25rem;  /*  4px */
  --gl-spacing-2: 0.5rem;   /*  8px */
  --gl-spacing-3: 0.75rem;  /* 12px */
  --gl-spacing-4: 1rem;     /* 16px */
  --gl-spacing-5: 1.25rem;  /* 20px */
  --gl-spacing-6: 1.5rem;   /* 24px */
  --gl-spacing-7: 2rem;     /* 32px */
  --gl-spacing-8: 3rem;     /* 48px */
  --gl-spacing-9: 4rem;     /* 64px */

  /* Layout */
  --content-width: 56rem;   /* ~896px */
  --measure: 70ch;          /* prose width */

  /* Radius (Pajamas: small, flat) */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;

  /* Code surface */
  --color-code-bg:   var(--gl-gray-950);
  --color-code-text: #e5e7eb;
}

/* ============================================================
   Reset
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--color-link-hover); }
a:focus-visible {
  outline: 2px solid var(--gl-blue-500);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  left: var(--gl-spacing-4);
  top: var(--gl-spacing-4);
  width: auto;
  height: auto;
  padding: var(--gl-spacing-2) var(--gl-spacing-3);
  background: var(--color-text);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: 1000;
}

/* ============================================================
   Layout chrome
   ============================================================ */

.wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--gl-spacing-6);
}

/* Site header — flat white with Tanzanite hairline. The brand statement
   on the index lives in .page-hero; deep pages get this minimal chrome. */
.site-header {
  background: var(--color-bg);
  color: var(--color-text);
  padding: var(--gl-spacing-6) 0;
  border-bottom: 1px solid var(--color-accent);
}
.site-header .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--gl-spacing-4);
  flex-wrap: wrap;
}
.site-title {
  display: inline-block;
  color: var(--color-text);
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-title:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.site-title:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.site-subtitle {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  flex-basis: 100%;
}

/* Index: the hero IS the brand statement, suppress the site-header. */
body.is-index .site-header { display: none; }

.site-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--gl-spacing-6);
  margin: 0;
  padding: var(--gl-spacing-2) 0;
}
.site-nav a {
  display: inline-block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: var(--gl-spacing-2) 0;
  border-bottom: 3px solid transparent;
}
.site-nav a:hover { color: var(--color-text); }
.site-nav a.is-active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.site-main { padding: var(--gl-spacing-9) 0; }

/* Index: hero butts against the nav, post-hero content gets its own breathing room. */
body.is-index .site-main { padding-top: 0; }
body.is-index .page-hero + .wrap { padding-top: var(--gl-spacing-9); }

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 0;
  padding: var(--gl-spacing-6) 0;
  color: var(--color-text-subtle);
  font-size: 0.88rem;
}
.site-footer p { margin: var(--gl-spacing-1) 0; }
.site-footer a { color: var(--color-text-muted); text-decoration: none; }
.site-footer a:hover { color: var(--color-text); text-decoration: underline; }

/* ============================================================
   Page header (Pajamas page meta strip + h1 + lede)
   ============================================================ */

.page-header {
  margin-bottom: var(--gl-spacing-8);
  padding-bottom: var(--gl-spacing-6);
  border-bottom: 1px solid var(--color-border);
}
.page-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--gl-spacing-3);
  margin: 0 0 var(--gl-spacing-4);
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}
.page-meta-item { color: var(--color-text-subtle); }
.page-header h1 {
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--gl-spacing-2);
  color: var(--color-text);
}
.page-lede {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: var(--measure);
}

/* ============================================================
   Page body — prose constrained, full-width components allowed
   ============================================================ */

.page-body { max-width: 100%; }

/* Prose elements respect a comfortable reading measure */
.page-body > p,
.page-body > ul,
.page-body > ol,
.page-body > h2,
.page-body > h3,
.page-body > h4,
.page-body > blockquote {
  max-width: var(--measure);
}

/* Headings — DESIGN.md hierarchy: weight + scale carry it, never decoration.
   Vertical rhythm uses {16, 24, 48} so heading top/bottom margins stack predictably. */
.page-body h2 {
  font-size: clamp(1.5rem, 2.2vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: var(--gl-spacing-8) 0 var(--gl-spacing-4);
  color: var(--color-text);
  scroll-margin-top: var(--gl-spacing-8);
}
.page-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.3;
  margin: var(--gl-spacing-6) 0 var(--gl-spacing-2);
  color: var(--color-text);
  scroll-margin-top: var(--gl-spacing-8);
}
.page-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: var(--gl-spacing-6) 0 var(--gl-spacing-2);
  color: var(--color-text);
  scroll-margin-top: var(--gl-spacing-8);
}
.page-body h2:first-child,
.page-body h3:first-child { margin-top: 0; }

.page-body p { margin: 0 0 var(--gl-spacing-4); }
.page-body ul,
.page-body ol {
  margin: 0 0 var(--gl-spacing-4);
  padding-left: var(--gl-spacing-5);
}
.page-body li { margin: var(--gl-spacing-1) 0; }
.page-body li > p { margin: var(--gl-spacing-1) 0; }
.page-body li > ul,
.page-body li > ol { margin: var(--gl-spacing-1) 0; }

.page-body strong { color: var(--color-text); font-weight: 600; }

/* Inline code */
.page-body code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.08em 0.35em;
  color: var(--color-text);
}

/* Code blocks */
.page-body pre {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  border-radius: var(--radius-md);
  padding: var(--gl-spacing-4) var(--gl-spacing-5);
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0 0 var(--gl-spacing-4);
}
.page-body pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
  white-space: pre;
}

/* Tables */
.page-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 var(--gl-spacing-4);
  font-size: 0.92rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-body th,
.page-body td {
  text-align: left;
  padding: var(--gl-spacing-3) var(--gl-spacing-4);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.page-body tr:last-child td { border-bottom: 0; }
.page-body th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  border-bottom-color: var(--color-border-strong);
  font-size: 0.88rem;
  letter-spacing: 0.01em;
}

.page-body blockquote {
  border-left: 3px solid var(--color-border-strong);
  margin: 0 0 var(--gl-spacing-4);
  padding: var(--gl-spacing-1) 0 var(--gl-spacing-1) var(--gl-spacing-4);
  color: var(--color-text-muted);
}

.page-body hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--gl-spacing-7) 0;
}

/* ============================================================
   Pajamas components: badge, alert, card
   ============================================================ */

/* Badge — small pill for metadata. */
.gl-badge {
  display: inline-flex;
  align-items: center;
  height: 1.4rem;
  padding: 0 var(--gl-spacing-2);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--gl-gray-50);
  color: var(--gl-gray-800);
  border: 1px solid var(--color-border);
  white-space: nowrap;
}
.gl-badge-info {
  background: var(--gl-blue-50);
  color: var(--gl-blue-700);
  border-color: var(--gl-blue-100);
}
.gl-badge-success {
  background: var(--gl-green-50);
  color: var(--gl-green-700);
  border-color: var(--gl-green-100);
}
.gl-badge-warning {
  background: var(--gl-orange-50);
  color: var(--gl-orange-700);
  border-color: var(--gl-orange-100);
}
.gl-badge-neutral {
  background: var(--gl-gray-50);
  color: var(--gl-gray-700);
  border-color: var(--color-border);
}
.gl-badge-brand {
  background: var(--gl-tanzanite-50);
  color: var(--gl-tanzanite-700);
  border-color: var(--gl-tanzanite-100);
}

/* Alert / callout — full 1px border + tinted background.
   No side-stripe. Type signaled by tinted background and heading color. */
.gl-alert {
  margin: var(--gl-spacing-6) 0;
  padding: var(--gl-spacing-4) var(--gl-spacing-6);
  background: var(--gl-blue-50);
  border: 1px solid var(--gl-blue-100);
  border-radius: var(--radius-md);
  color: var(--color-text);
  max-width: var(--measure);
}
.gl-alert-warning {
  background: var(--gl-orange-50);
  border-color: var(--gl-orange-100);
}
.gl-alert-success {
  background: var(--gl-green-50);
  border-color: var(--gl-green-100);
}
.gl-alert-title,
.gl-alert > h3,
.gl-alert > h4 {
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  margin: 0 0 var(--gl-spacing-2);
  color: var(--gl-blue-700);
}
.gl-alert-warning > h3,
.gl-alert-warning > h4,
.gl-alert-warning .gl-alert-title { color: var(--gl-orange-700); }
.gl-alert-success > h3,
.gl-alert-success > h4,
.gl-alert-success .gl-alert-title { color: var(--gl-green-700); }
.gl-alert > p,
.gl-alert > ul,
.gl-alert > ol {
  margin: 0;
  color: var(--color-text-muted);
}
.gl-alert > ul,
.gl-alert > ol { padding-left: var(--gl-spacing-5); }
.gl-alert > * + * { margin-top: var(--gl-spacing-2); }
.gl-alert li { margin: var(--gl-spacing-1) 0; color: inherit; }
.gl-alert strong { color: var(--color-text); }

/* Card — grouping container. Flat, bordered, no shadow. */
.gl-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--gl-spacing-6);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.gl-card[href]:hover {
  border-color: var(--color-accent);
  background: var(--gl-tanzanite-50);
}
.gl-card[href]:focus-visible {
  outline: 2px solid var(--gl-blue-500);
  outline-offset: 2px;
}
.gl-card-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin: 0 0 var(--gl-spacing-2);
}
.gl-card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 var(--gl-spacing-2);
  color: var(--color-text);
  letter-spacing: -0.005em;
}
.gl-card-body {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin: 0;
}
.gl-card-footer {
  margin-top: var(--gl-spacing-4);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-link);
}
.gl-card[href]:hover .gl-card-footer { color: var(--color-accent); }
.gl-card .gl-badge { align-self: flex-start; margin-bottom: var(--gl-spacing-3); }

/* Card grid — two-column at narrow, three-column at wider.
   Gap rhythm uses --gl-spacing-6 (24px) — matches in-card padding for consistency. */
.gl-card-grid {
  display: grid;
  gap: var(--gl-spacing-6);
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  margin: var(--gl-spacing-6) 0;
}
.gl-card-grid-2 { grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); }
.gl-card-grid-3 { grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); }

/* Feature grid — one emphasized card on top, two equal below.
   Breaks the SaaS-cliche identical-card grid by varying weight. */
.gl-card-grid-feature {
  display: grid;
  gap: var(--gl-spacing-6);
  grid-template-columns: 1fr 1fr;
  margin: var(--gl-spacing-6) 0;
}
.gl-card-grid-feature > .gl-card-feature {
  grid-column: 1 / -1;
}

.gl-card-feature {
  padding: var(--gl-spacing-7);
  border-color: var(--color-border-strong);
  border-radius: var(--radius-lg);
}
.gl-card-feature .gl-card-title {
  font-size: 1.375rem;
  letter-spacing: -0.01em;
}
.gl-card-feature .gl-card-body {
  font-size: 1rem;
  max-width: 56ch;
}
.gl-card-meta {
  margin: var(--gl-spacing-3) 0 0;
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}
.gl-card-meta a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 2px;
}
.gl-card-feature[href]:hover .gl-card-meta a {
  text-decoration-color: var(--color-accent);
}

/* Page context strip — the compact "FOR / COVERS / NOT" row that sits
   below the index cards. Definition list semantics; label-typography
   on dt, body voice on dd. Replaces what used to be h2 sections. */
.page-context-strip {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: var(--gl-spacing-6);
  row-gap: var(--gl-spacing-4);
  margin: var(--gl-spacing-8) 0 0;
  padding: var(--gl-spacing-6) 0 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.92rem;
  max-width: var(--measure);
}
.page-context-strip dt {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  align-self: baseline;
  padding-top: 0.18rem;
}
.page-context-strip dd {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ============================================================
   Page hero — index only. The ONE sanctioned gradient.
   Tanzanite to Tanuki on a wide diagonal so most reads Tanzanite
   and Tanuki only catches the bottom-right corner.
   ============================================================ */

.page-hero {
  position: relative;
  background: var(--gl-tanzanite-700);
  background-image: linear-gradient(135deg, var(--gl-tanzanite-800) 0%, var(--gl-tanzanite-500) 65%, var(--gl-tanzanite-600) 100%);
  color: #fff;
  padding: var(--gl-spacing-9) 0 var(--gl-spacing-9);
  border-bottom: 1px solid var(--gl-tanzanite-900);
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 35%;
  height: 70%;
  background: radial-gradient(closest-side, rgba(252, 109, 38, 0.5) 0%, rgba(252, 109, 38, 0) 100%);
  pointer-events: none;
  z-index: 0;
}
.page-hero > .wrap { position: relative; z-index: 1; }
.page-hero-meta {
  display: flex;
  align-items: center;
  gap: var(--gl-spacing-3);
  margin: 0 0 var(--gl-spacing-6);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}
.page-hero-headline {
  margin: 0 0 var(--gl-spacing-4);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 22ch;
}
.page-hero-intro {
  margin: 0 0 var(--gl-spacing-6);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.9);
  max-width: 56ch;
}
.page-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gl-spacing-4);
  align-items: center;
  margin-bottom: var(--gl-spacing-6);
}
.page-hero-cues {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gl-spacing-3);
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.72);
}
.page-hero-cues span[aria-hidden] { color: rgba(255, 255, 255, 0.4); }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--gl-spacing-2);
  padding: var(--gl-spacing-3) var(--gl-spacing-5);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
}

.btn-primary {
  background: #fff;
  color: var(--gl-tanzanite-700);
  border-color: #fff;
}
.btn-primary:hover {
  background: var(--gl-gray-10);
  color: var(--gl-tanzanite-800);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(31, 31, 31, 0.10);
}
.btn-primary:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.btn-ghost-on-dark {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.btn-ghost-on-dark:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.btn-ghost-on-dark:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

/* Solid brand badge for use on the dark hero. */
.gl-badge-brand-solid {
  display: inline-flex;
  align-items: center;
  height: 1.4rem;
  padding: 0 var(--gl-spacing-2);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.28);
  white-space: nowrap;
}

/* ============================================================
   Page TOC — sticky right-rail on deep pages, collapsible on mobile.
   Layout switches to two columns when .has-toc is on the page wrap.
   ============================================================ */

.page-with-toc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--gl-spacing-7);
  align-items: start;
}
.page-with-toc > .page { min-width: 0; }
.page-with-toc > .page-toc { width: 14rem; }
.page-with-toc > .page-toc[hidden] { display: none; }

.page-toc {
  position: sticky;
  top: calc(var(--gl-spacing-7) + 2.5rem);
  font-size: 0.88rem;
  line-height: 1.5;
  border-left: 1px solid var(--color-border);
  padding-left: var(--gl-spacing-4);
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
}
.page-toc-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin: 0 0 var(--gl-spacing-3);
}
.page-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-toc li { margin: var(--gl-spacing-1) 0; }
.page-toc li li {
  margin-left: var(--gl-spacing-3);
  font-size: 0.85rem;
}
.page-toc a {
  color: var(--color-text-muted);
  text-decoration: none;
  display: block;
  padding: 0.15rem 0;
  border-left: 1px solid transparent;
  margin-left: -0.5rem;
  padding-left: 0.5rem;
}
.page-toc a:hover { color: var(--color-accent); }
.page-toc a.is-active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   Copy button — injected by JS on every <pre> with code.
   ============================================================ */

.code-block {
  position: relative;
}
.copy-button {
  position: absolute;
  top: var(--gl-spacing-3);
  right: var(--gl-spacing-3);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-code-text);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font: 600 0.72rem/1 var(--font-sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.code-block:hover .copy-button,
.code-block:focus-within .copy-button { opacity: 1; }
.copy-button:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.28);
}
.copy-button:focus-visible {
  opacity: 1;
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.copy-button[data-state="copied"] {
  background: var(--gl-green-500);
  color: #fff;
  border-color: var(--gl-green-500);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 960px) {
  .page-with-toc {
    grid-template-columns: 1fr;
  }
  .page-toc {
    position: static;
    border-left: 0;
    border-top: 1px solid var(--color-border);
    padding-left: 0;
    padding-top: var(--gl-spacing-3);
    margin-bottom: var(--gl-spacing-6);
    max-height: none;
  }
  .page-toc[open] .page-toc-title::after { content: " \2014 hide"; }
  .page-toc-title {
    cursor: pointer;
    user-select: none;
  }
  .page-toc-title::after {
    content: " \2014 show";
    color: var(--color-text-subtle);
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0;
  }
}

@media (max-width: 640px) {
  .site-header { padding: var(--gl-spacing-4) 0; }
  .site-header .wrap { gap: var(--gl-spacing-2); }
  .site-main { padding: var(--gl-spacing-8) 0; }
  body.is-index .page-hero + .wrap { padding-top: var(--gl-spacing-8); }
  .page-header h1 { font-size: 1.6rem; }
  .page-body pre { padding: var(--gl-spacing-3) var(--gl-spacing-4); font-size: 0.82rem; }
  .gl-card-grid { grid-template-columns: 1fr; }
  .gl-card-grid-feature { grid-template-columns: 1fr; }
  .gl-card { padding: var(--gl-spacing-5); }
  .gl-card-feature { padding: var(--gl-spacing-6); }
  .page-hero { padding: var(--gl-spacing-8) 0; }
  .page-hero-actions .btn { flex: 1 1 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}