/* ============================================================
   spatialllm.org — global stylesheet
   Light, professional palette inspired by maps & data.
   ============================================================ */

:root {
  --bg:            #f7f9fc;
  --surface:       #ffffff;
  --surface-muted: #eef2f7;
  --ink:           #0e1b2c;
  --ink-soft:      #3a4a63;
  --ink-faint:     #6b7a90;
  --primary:       #1f7ae0;
  --primary-strong:#1a63ba;
  --accent:        #10b981;
  --accent-strong: #0a8d63;
  --secondary:     #f59e0b;
  --violet:        #7c3aed;
  --rose:          #e11d48;
  --border:        #dbe3ee;
  --border-soft:   #e6ecf4;
  --code-bg:       #f1f5fa;
  --code-inline-bg:#eaf0f7;
  --code-ink:      #1c2a3d;
  --shadow-sm:     0 2px 6px rgba(15, 23, 42, 0.05);
  --shadow:        0 6px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg:     0 16px 40px rgba(15, 23, 42, 0.10);
  --radius-sm:     6px;
  --radius:        12px;
  --radius-lg:     18px;
  --header-h:      64px;
  --container-max: 1280px;
  --container-wide:1440px;
  --transition:    180ms cubic-bezier(.4,.2,.2,1);
  --gradient-brand: linear-gradient(135deg, #1f7ae0 0%, #7c3aed 60%, #f59e0b 110%);
  --gradient-soft:  linear-gradient(160deg, #eaf2ff 0%, #f0f7ff 40%, #fdf6ec 100%);
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Footer-pinning */
body > main { flex: 1 0 auto; }

/* -------------- Layout helpers -------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: clamp(16px, 4vw, 32px);
}
.container-wide {
  max-width: var(--container-wide);
}

/* -------------- Skip link -------------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 8px 12px;
  border-radius: var(--radius-sm); z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* -------------- Site header -------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--ink);
}
.brand__mark {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--gradient-brand);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.brand__mark img { display: block; width: 32px; height: 32px; filter: drop-shadow(0 1px 2px rgba(0,0,0,.18)); }
.brand:hover .brand__mark { transform: rotate(-4deg) scale(1.04); box-shadow: var(--shadow); }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__title { font-weight: 700; font-size: 16px; }
.brand__sub { font-size: 11px; color: var(--ink-faint); letter-spacing: 0.02em; }

.primary-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; align-items: center; gap: 4px;
}
.primary-nav a {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--ink-soft);
  padding: 8px 14px; border-radius: 999px;
  font-weight: 600; font-size: 14.5px;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.primary-nav a:hover { background: var(--surface-muted); color: var(--ink); transform: translateY(-1px); }
.primary-nav a[aria-current="page"] {
  background: linear-gradient(180deg, rgba(31,122,224,0.10), rgba(31,122,224,0.04));
  color: var(--primary-strong);
}
.primary-nav .icon { color: var(--primary); }
.primary-nav a[aria-current="page"] .icon { color: var(--primary-strong); }

.nav-toggle {
  display: none;
  background: transparent; border: none; cursor: pointer;
  color: var(--ink); padding: 8px; border-radius: 10px;
}
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: inline-block; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-grid; place-items: center; }
  .primary-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: var(--shadow);
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
  }
  .primary-nav[data-open="true"] {
    transform: translateY(0); opacity: 1; pointer-events: auto;
  }
  .primary-nav ul {
    flex-direction: column; align-items: stretch; padding: 12px 16px; gap: 4px;
  }
  .primary-nav a { padding: 12px 14px; }
}

/* -------------- Hero & homepage -------------- */
.hero {
  position: relative;
  padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 64px);
  background: var(--gradient-soft);
  border-bottom: 1px solid var(--border-soft);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: -60px;
  background: radial-gradient(60% 50% at 20% 10%, rgba(31,122,224,0.18) 0%, transparent 60%),
              radial-gradient(50% 40% at 80% 20%, rgba(124,58,237,0.18) 0%, transparent 60%),
              radial-gradient(50% 50% at 50% 100%, rgba(245,158,11,0.14) 0%, transparent 60%);
  pointer-events: none;
}
.hero__inner { position: relative; text-align: center; }
.hero__logo {
  display: block; margin: 0 auto 24px;
  width: clamp(110px, 16vw, 168px); height: auto;
  filter: drop-shadow(0 12px 28px rgba(31, 122, 224, 0.28));
  animation: floaty 7s ease-in-out infinite;
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__logo { animation: none; }
}
.hero__title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  margin: 0 0 12px;
  line-height: 1.1; font-weight: 800; letter-spacing: -0.02em;
}
.hero__tagline {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 64ch; margin: 0 auto 32px;
}
.hero__ctas {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px;
  margin-top: 28px;
}

.gradient-title {
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* Two-column lede block on desktop, full-width on mobile.
   Used on the homepage intro so it tracks the full container width
   instead of collapsing to a narrow column. */
.lede-grid {
  display: grid;
  gap: 18px 40px;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: none;
}
.lede-grid > p { margin: 0; }
.lede-grid p strong { color: var(--ink); }
@media (max-width: 720px) {
  .lede-grid { gap: 14px; }
}

/* Compact "what's in this card" list — used on the homepage inventory cards. */
.article-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.article-list > li {
  position: relative;
  padding: 4px 0 4px 22px;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.4;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}
.article-list > li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--gradient-brand);
  transform: translateY(-50%) rotate(45deg);
  box-shadow: 0 0 0 3px rgba(31, 122, 224, 0.10);
  transition: background var(--transition), transform var(--transition);
}
.card:hover .article-list > li { color: var(--ink); }
.card:hover .article-list > li::before { transform: translateY(-50%) rotate(135deg); }

/* -------------- Buttons -------------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 999px;
  text-decoration: none; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid rgba(31, 122, 224, 0.35); outline-offset: 2px; }

.btn--primary {
  color: #fff; background: var(--gradient-brand); box-shadow: var(--shadow);
}
.btn--primary:hover { box-shadow: var(--shadow-lg); }

.btn--ghost {
  background: var(--surface); color: var(--ink); border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.btn--ghost:hover { border-color: var(--primary); color: var(--primary-strong); }

.btn .icon { width: 20px; height: 20px; }
.btn--primary .icon { color: #fff; }
.btn--icon-arch { color: #fff; }
.btn-icon {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: rgba(255,255,255,0.18);
}
.btn--ghost .btn-icon { background: rgba(31,122,224,0.10); color: var(--primary-strong); }
.btn--ghost .btn-icon.icon-route-bg { background: rgba(124,58,237,0.10); color: var(--violet); }
.btn--ghost .btn-icon.icon-globe-bg { background: rgba(16,185,129,0.12); color: var(--accent-strong); }

/* -------------- Section structure -------------- */
.section { padding: clamp(40px, 6vw, 80px) 0; }
.section + .section { border-top: 1px solid var(--border-soft); }
.section__head { text-align: center; max-width: 64ch; margin: 0 auto 32px; }
.section__title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 700; margin: 0 0 12px;
}
.section__lede { color: var(--ink-soft); margin: 0; }

.section-title {
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  font-weight: 700;
  margin: 0 0 20px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}

/* -------------- Cards & grids -------------- */
.card-grid {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card-grid--three {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border); }
.card > a {
  display: block; padding: 22px 22px;
  text-decoration: none; color: var(--ink);
  height: 100%;
}
.card__eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 8px;
}
.card__title {
  display: block; font-size: 1.15rem; font-weight: 700; margin: 4px 0 12px;
  line-height: 1.3;
}
.card__desc { color: var(--ink-soft); display: block; }
.card__icon {
  display: inline-grid; place-items: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(31,122,224,0.12), rgba(124,58,237,0.12));
  color: var(--primary); margin-bottom: 14px;
  transition: transform var(--transition);
}
.card:hover .card__icon { transform: rotate(-3deg) scale(1.05); }
.card__cta {
  display: inline-block; margin-top: 12px;
  color: var(--primary-strong); font-weight: 600;
}
.card:hover .card__cta { color: var(--violet); }

.card--featured a { padding: 28px; }
.card--featured .card__title { font-size: 1.35rem; }

/* -------------- Pillar layout -------------- */
.pillar__hero {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: clamp(28px, 4vw, 56px) 0 clamp(20px, 3vw, 36px);
}
.pillar__hero-icon {
  display: inline-grid; place-items: center;
  width: 80px; height: 80px; border-radius: 22px;
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.pillar__hero-icon .icon { width: 44px; height: 44px; }
.pillar__title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 12px;
  line-height: 1.15; letter-spacing: -0.01em; font-weight: 800;
}
.pillar__lede {
  color: var(--ink-soft); max-width: 70ch; margin: 0 auto;
  font-size: 1.05rem;
}
.pillar__grid { padding: 16px 0 40px; }
.pillar__body { padding-top: 16px; }

/* -------------- Article layout -------------- */
.article {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(40px, 6vw, 80px);
}
.article__header { margin-bottom: 24px; }
.article__title {
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
  margin: 12px 0 8px;
  font-weight: 800; line-height: 1.18; letter-spacing: -0.01em;
}
.article__lede { color: var(--ink-soft); font-size: 1.1rem; }

/* -------------- Prose / markdown content -------------- */
.prose { font-size: 1.04rem; }
.prose p, .prose ul, .prose ol, .prose blockquote { margin: 0 0 1.2em; }
.prose h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  margin: 2.2em 0 0.6em;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.3;
  font-weight: 700;
}
.prose h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.35rem);
  margin: 1.8em 0 0.5em;
  font-weight: 700; color: var(--ink);
}
.prose h4 {
  font-size: 1.05rem;
  margin: 1.4em 0 0.4em;
  font-weight: 700; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.06em;
}
/* Custom-styled bullets / numbers (skip when this list is a task-list or article-list). */
.prose ul:not(.contains-task-list):not(.article-list),
.prose ol:not(.contains-task-list) {
  list-style: none;
  padding-left: 0;
  margin-left: 0;
}
.prose ul:not(.contains-task-list):not(.article-list) > li,
.prose ol:not(.contains-task-list) > li {
  position: relative;
  padding-left: 1.75em;
  margin: 0.4em 0;
}
.prose ul:not(.contains-task-list):not(.article-list) > li::before {
  content: "";
  position: absolute;
  left: 0.45em;
  top: 0.72em;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 0 3px rgba(31, 122, 224, 0.08);
}
.prose ol:not(.contains-task-list) {
  counter-reset: prose-ol;
}
.prose ol:not(.contains-task-list) > li {
  counter-increment: prose-ol;
}
.prose ol:not(.contains-task-list) > li::before {
  content: counter(prose-ol);
  position: absolute;
  left: 0;
  top: 0.05em;
  display: inline-grid;
  place-items: center;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(31,122,224,0.12), rgba(124,58,237,0.12));
  color: var(--primary-strong);
  font-size: 0.78em;
  font-weight: 700;
  font-feature-settings: "tnum";
}
.prose ul ul,
.prose ol ol,
.prose ul ol,
.prose ol ul { margin: 0.3em 0 0.4em; }
.prose ul:not(.contains-task-list):not(.article-list) ul > li::before {
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.10);
}

.prose a {
  color: var(--primary-strong);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1.5px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size var(--transition), color var(--transition);
}
.prose a:hover { color: var(--violet); background-size: 100% 1.5px; }

/* Inline code */
.prose :not(pre) > code,
.prose code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--code-inline-bg);
  color: var(--ink);
  border: 0;
  white-space: nowrap;
}

/* Code blocks */
.code-block {
  position: relative;
  margin: 1.4em 0;
  border-radius: var(--radius);
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.code-block pre {
  margin: 0;
  padding: 20px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--code-ink);
  background: transparent;
}
.code-block code { font-family: inherit; color: inherit; background: transparent; padding: 0; border: 0; white-space: pre; }
.copy-btn {
  position: absolute; top: 10px; right: 10px;
  padding: 6px 12px;
  font-size: 12px; font-weight: 600;
  color: var(--ink-soft); background: var(--surface);
  border: 1px solid var(--border); border-radius: 999px;
  cursor: pointer; box-shadow: var(--shadow-sm);
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
  z-index: 1;
}
.copy-btn:hover { color: var(--primary-strong); border-color: var(--primary); transform: translateY(-1px); }
.copy-btn[data-state="copied"] { color: var(--accent-strong); border-color: var(--accent); }

/* Prism light theme overrides */
.code-block .token.comment,
.code-block .token.prolog,
.code-block .token.doctype,
.code-block .token.cdata { color: #6b7a90; font-style: italic; }
.code-block .token.punctuation { color: #3a4a63; }
.code-block .token.property,
.code-block .token.tag,
.code-block .token.constant,
.code-block .token.symbol,
.code-block .token.deleted { color: #c2410c; }
.code-block .token.boolean,
.code-block .token.number { color: #b45309; }
.code-block .token.selector,
.code-block .token.attr-name,
.code-block .token.string,
.code-block .token.char,
.code-block .token.builtin,
.code-block .token.inserted { color: #0f7d4f; }
.code-block .token.operator,
.code-block .token.entity,
.code-block .token.url,
.code-block .token.variable { color: #1a63ba; }
.code-block .token.atrule,
.code-block .token.attr-value,
.code-block .token.keyword { color: #6d28d9; font-weight: 600; }
.code-block .token.function,
.code-block .token.class-name { color: #1f7ae0; font-weight: 600; }
.code-block .token.regex,
.code-block .token.important { color: #be185d; }

/* Tables */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
}
.prose .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}
.prose table th,
.prose table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  vertical-align: top;
}
.prose table thead th {
  background: var(--surface-muted);
  font-weight: 700; color: var(--ink);
  position: sticky; top: 0;
}
.prose table tbody tr:nth-child(2n) { background: rgba(238, 242, 247, 0.45); }

/* Blockquotes */
.prose blockquote {
  margin-left: 0;
  padding: 0.6em 1em;
  border-left: 4px solid var(--accent);
  background: rgba(16, 185, 129, 0.06);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-soft);
}

/* Task list checkboxes */
.prose .task-list-item { list-style: none; margin-left: -1.4em; padding-left: 0; }
.prose .task-list-item input[type="checkbox"] {
  appearance: none; -webkit-appearance: none;
  width: 18px; height: 18px;
  border: 2px solid var(--primary);
  border-radius: 5px;
  margin-right: 10px;
  vertical-align: -3px;
  cursor: pointer;
  background: var(--surface);
  transition: background var(--transition), border-color var(--transition);
}
.prose .task-list-item input[type="checkbox"]:checked {
  background: var(--primary);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='m5 12 5 5 9-11'/></svg>");
  background-repeat: no-repeat; background-position: center; background-size: 14px;
  border-color: var(--primary);
}
.prose .task-list-item.is-checked,
.prose .task-list-item input[type="checkbox"]:checked ~ * {
  /* targeted by JS via class on <li> for older browsers */
}
.prose .task-list-item.is-checked {
  color: var(--ink-faint);
  text-decoration: line-through;
}

/* FAQ accordion */
.prose details {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 0;
  margin: 12px 0;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.prose details + details { margin-top: 8px; }
.prose details > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  color: var(--ink);
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  transition: background var(--transition);
}
.prose details > summary::-webkit-details-marker { display: none; }
.prose details > summary::after {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(-45deg);
  transition: transform var(--transition);
}
.prose details[open] > summary::after { transform: rotate(45deg); }
.prose details[open] > summary { background: var(--surface-muted); }
.prose details > *:not(summary) { padding: 0 18px 16px; }

/* Mermaid */
.mermaid-wrap {
  margin: 1.4em 0;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}
.mermaid-wrap .mermaid { display: block; text-align: center; min-width: 100%; }

/* KaTeX small tweaks */
.katex { font-size: 1.05em; }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 0.25em 0; }

/* -------------- Breadcrumbs -------------- */
.breadcrumbs {
  margin: 14px 0 8px;
  font-size: 13.5px;
  color: var(--ink-faint);
}
.breadcrumbs ol {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: 6px; }
.breadcrumbs li + li::before {
  content: "›"; color: var(--ink-faint); padding: 0 2px;
}
.breadcrumbs a {
  color: var(--ink-soft); text-decoration: none;
  padding: 2px 8px; border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}
.breadcrumbs a:hover { background: var(--surface-muted); color: var(--primary-strong); }
.breadcrumbs [aria-current="page"] { color: var(--ink); font-weight: 600; }

/* -------------- Related block -------------- */
.related {
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
}
.related h2 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.card--related a { display: flex; flex-direction: column; gap: 6px; }

/* -------------- Footer -------------- */
.site-footer {
  background: linear-gradient(180deg, #f3f6fb 0%, #ebf0f7 100%);
  border-top: 1px solid var(--border-soft);
  margin-top: 64px;
}
.site-footer__inner {
  display: grid; gap: 32px;
  grid-template-columns: 1.2fr 2fr;
  padding: clamp(28px, 4vw, 48px) 0;
}
.site-footer__brand {
  display: flex; gap: 14px; align-items: flex-start;
}
.site-footer__title { font-weight: 700; font-size: 1.05rem; }
.site-footer__tagline { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; max-width: 36ch; }
.site-footer__cols {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.site-footer__cols h2 {
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 12px;
}
.site-footer__cols ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 8px;
}
.site-footer__cols a {
  text-decoration: none; color: var(--ink); font-weight: 500;
  transition: color var(--transition);
}
.site-footer__cols a:hover { color: var(--primary-strong); }
.site-footer__bottom {
  border-top: 1px solid var(--border-soft);
  padding: 16px 0; color: var(--ink-faint); font-size: 13px;
}
@media (max-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr; }
}

/* -------------- Misc -------------- */
::selection { background: rgba(31, 122, 224, 0.20); color: var(--ink); }

img, svg { max-width: 100%; height: auto; }

.icon { display: inline-block; vertical-align: -3px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}