/* ForgeHash documentation site — laboratory ledger under forge light */

:root {
  --paper: #d4dce6;
  --paper-deep: #c5ced9;
  --ink: #1a222c;
  --ink-muted: #4a5564;
  --ink-faint: #6b7785;
  --rule: #8e9bab;
  --rule-soft: rgba(26, 34, 44, 0.14);
  --slag: #a34d22;
  --slag-deep: #6e3214;
  --slag-wash: rgba(163, 77, 34, 0.12);
  --slag-edge: rgba(163, 77, 34, 0.55);
  --code-bg: #e8eef4;
  --warn-bg: rgba(163, 77, 34, 0.08);
  --surface: rgba(255, 255, 255, 0.38);
  --surface-strong: rgba(255, 255, 255, 0.55);
  --font-display: "Fraunces", "Literata", Georgia, serif;
  --font-body: "Literata", "Fraunces", Georgia, serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;
  --max: 68rem;
  --content: 44rem;
  --nav-w: 13.5rem;
  --pad: 1.25rem;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background-color: var(--paper);
  background-image:
    linear-gradient(
      165deg,
      rgba(212, 220, 230, 0.88) 0%,
      rgba(197, 206, 217, 0.94) 42%,
      rgba(188, 198, 210, 0.97) 100%
    ),
    url("forge-wash.png"),
    url("paper-grain.png");
  background-size: auto, 640px 640px, 420px 420px;
  background-attachment: fixed, fixed, fixed;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(
      -32deg,
      transparent,
      transparent 11px,
      rgba(26, 34, 44, 0.55) 11px,
      rgba(26, 34, 44, 0.55) 12px
    );
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 45% at 12% -8%, var(--slag-wash), transparent 58%),
    radial-gradient(ellipse 50% 40% at 100% 100%, rgba(26, 34, 44, 0.06), transparent 55%);
}

a {
  color: var(--slag-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}

a:hover {
  color: var(--slag);
}

a:focus-visible {
  outline: 2px solid var(--slag);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: var(--pad);
  top: -3rem;
  z-index: 100;
  padding: 0.4rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
}

.site-wrap {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad) 3.5rem;
}

/* —— Header —— */

.site-header {
  padding: 1.35rem 0 0.85rem;
  border-bottom: 1px solid var(--rule);
  animation: fade-in 0.55s var(--ease) both;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.brand-mark {
  width: 1.85rem;
  height: 1.85rem;
  object-fit: contain;
  flex-shrink: 0;
  filter: saturate(0.9) contrast(1.05);
}

.brand {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.45rem);
  font-weight: 650;
  font-variation-settings: "SOFT" 40, "WONK" 0.4;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
  text-decoration: none;
  margin: 0;
}

.brand:hover {
  color: var(--ink);
}

.brand-meta {
  margin: 0.35rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--rule);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.nav-toggle:hover {
  background: var(--surface-strong);
  border-color: var(--slag-edge);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--slag);
  outline-offset: 2px;
}

.site-nav {
  margin-top: 0.9rem;
}

.site-nav > ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.1rem 0.05rem;
}

.site-nav a {
  display: inline-block;
  padding: 0.35rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.01em;
  color: var(--ink-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.2s var(--ease);
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--slag);
}

.nav-cluster {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  margin: 0 0.15rem;
  padding: 0.1rem 0.2rem 0.1rem 0.35rem;
  border: 1px solid transparent;
}

.nav-cluster.is-active {
  border-color: var(--rule-soft);
  background: var(--surface);
}

.nav-cluster-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  padding: 0.2rem 0.15rem;
  user-select: none;
}

.nav-cluster-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  gap: 0;
}

.nav-cluster-list a {
  padding: 0.3rem 0.45rem;
}

/* —— Layout —— */

.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  margin-top: 1.5rem;
}

main {
  min-width: 0;
  max-width: var(--content);
  animation: fade-up 0.6s var(--ease) 0.08s both;
}

.page-lede {
  margin: 0 0 1.25rem;
  font-size: 1.12rem;
  color: var(--ink-muted);
  max-width: 38rem;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.8vw, 2.1rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.65rem;
}

h2 {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 2rem 0 0.65rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--rule-soft);
}

h2:first-of-type {
  border-top: 0;
  padding-top: 0;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 1.4rem 0 0.45rem;
}

p {
  margin: 0 0 1rem;
}

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}

li > ul,
li > ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 1.75rem 0;
}

/* —— Callouts —— */

.callout {
  margin: 1.15rem 0 1.5rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--slag);
  background: var(--warn-bg);
  animation: warn-edge 1.1s var(--ease) 0.2s both;
}

.callout p {
  margin: 0;
  font-size: 0.98rem;
}

.callout strong {
  font-weight: 650;
}

.callout + .callout {
  margin-top: 0.75rem;
}

/* —— Tables —— */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.25rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.18);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.65rem;
  vertical-align: top;
  border-bottom: 1px solid var(--rule-soft);
}

th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  background: rgba(255, 255, 255, 0.28);
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr {
  transition: background 0.15s var(--ease);
}

tbody tr:hover {
  background: rgba(163, 77, 34, 0.04);
}

td code {
  font-size: 0.82em;
}

/* —— Code —— */

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.86em;
}

:not(pre) > code {
  padding: 0.1em 0.28em;
  background: var(--code-bg);
  border: 1px solid var(--rule-soft);
}

pre {
  margin: 0 0 1.25rem;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
}

pre code {
  padding: 0;
  background: none;
  border: 0;
  font-size: inherit;
}

/* —— Identity / meta blocks —— */

.meta-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.meta-list li {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.75rem;
  margin: 0;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 0.95rem;
}

.meta-list li:last-child {
  border-bottom: 0;
}

.meta-list .k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  padding-top: 0.15rem;
}

.digest {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  word-break: break-all;
  line-height: 1.45;
}

.toc {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  columns: 1;
  gap: 1.5rem;
}

.toc li {
  margin: 0 0 0.4rem;
  break-inside: avoid;
}

.toc a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--ink-muted);
}

.toc a:hover {
  color: var(--slag);
}

.toc .sec {
  display: block;
  margin-top: 0.75rem;
  margin-bottom: 0.25rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
}

.toc li:first-child .sec {
  margin-top: 0;
}

.doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 1rem 0 1.5rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.note {
  font-size: 0.92rem;
  color: var(--ink-muted);
}

.footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: space-between;
}

.footer a {
  color: var(--ink-muted);
  text-decoration: none;
}

.footer a:hover {
  color: var(--slag);
}

/* —— Home: first viewport —— */

.page-home main {
  max-width: min(52rem, 100%);
  animation: none;
}

@media (min-width: 1200px) {
  .page-home .home-stage {
    max-width: 40rem;
  }
}

.home-stage {
  position: relative;
  min-height: min(72vh, 32rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem 0 2.25rem;
  margin: 0 0 0.5rem;
}

.home-stage::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8%;
  bottom: 12%;
  width: 3px;
  background: linear-gradient(180deg, transparent, var(--slag) 18%, var(--slag-deep) 72%, transparent);
  opacity: 0;
  animation: slag-rise 0.9s var(--ease-out) 0.15s both;
}

.home-stage::after {
  content: "";
  position: absolute;
  right: 0;
  top: 18%;
  width: min(28%, 11rem);
  height: 42%;
  pointer-events: none;
  opacity: 0.14;
  background:
    radial-gradient(ellipse at 70% 40%, rgba(163, 77, 34, 0.35), transparent 68%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 13px,
      rgba(26, 34, 44, 0.12) 13px,
      rgba(26, 34, 44, 0.12) 14px
    );
  mask-image: linear-gradient(90deg, transparent, #000 35%);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 35%);
}


.home-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
  padding-left: 1rem;
  animation: fade-up 0.7s var(--ease-out) 0.05s both;
}

.home-lede,
.hero-cta,
.hero-edge {
  padding-left: 1rem;
}


.home-mark {
  width: clamp(3.4rem, 8vw, 4.5rem);
  height: clamp(3.4rem, 8vw, 4.5rem);
  object-fit: contain;
  flex-shrink: 0;
  filter: saturate(0.95) contrast(1.08);
  animation: mark-settle 0.85s var(--ease-out) 0.12s both;
}

.home-stage h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4rem);
  font-weight: 650;
  font-variation-settings: "SOFT" 35, "WONK" 0.55;
  letter-spacing: -0.035em;
  line-height: 0.95;
  margin: 0;
  color: var(--ink);
}

.home-lede {
  margin: 0 0 1.35rem;
  max-width: 28rem;
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  line-height: 1.5;
  color: var(--ink-muted);
  animation: fade-up 0.7s var(--ease-out) 0.18s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.65rem;
  margin: 0 0 1.15rem;
  animation: fade-up 0.7s var(--ease-out) 0.28s both;
}

.hero-cta .cta {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
  background: var(--surface-strong);
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-bottom-color: var(--slag);
  transition:
    color 0.15s var(--ease),
    background 0.15s var(--ease),
    border-color 0.15s var(--ease),
    transform 0.2s var(--ease);
}

.hero-cta .cta:hover {
  color: var(--slag-deep);
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--slag-edge);
  transform: translateY(-1px);
}

.hero-cta .cta:active {
  transform: translateY(0);
}

.hero-cta .cta-quiet {
  background: rgba(255, 255, 255, 0.28);
  color: var(--ink-muted);
  border-bottom-color: var(--rule);
}

.hero-cta .cta-quiet:hover {
  color: var(--slag-deep);
  border-bottom-color: var(--slag);
}


.hero-edge {
  margin: 0;
  padding: 0.35rem 0 0.35rem 1rem;
  max-width: 28rem;

  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  color: var(--ink-faint);
  border-left: 2px solid var(--slag);
  animation: fade-up 0.65s var(--ease-out) 0.38s both, warn-edge 1s var(--ease) 0.35s both;
}

/* —— Home: tracks —— */

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin: 0 0 1rem;
  padding: 0;
  border: 0;
}

.tracks {
  margin: 0.5rem 0 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
}

.track-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.track {
  padding: 0 0 1.5rem;
}

.track-x {
  padding-top: 1.35rem;
  border-top: 1px dashed var(--rule);
}

.track-kicker {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--slag);
}

.track-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.65rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 0.45rem;
}

.track-lede {
  margin: 0 0 0.85rem;
  font-size: 0.98rem;
  color: var(--ink-muted);
  max-width: 22rem;
}

.track-meta {
  list-style: none;
  margin: 0 0 0.85rem;
  padding: 0;
  border-top: 1px solid var(--rule-soft);
}

.track-meta li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.5rem;
  margin: 0;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 0.9rem;
}

.track-meta .k {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  padding-top: 0.15rem;
}

.track-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.track-links a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease);
}

.track-links a:hover {
  border-bottom-color: var(--slag);
}

.track-note {
  margin-top: 0.5rem;
}

.profiles h2,
.explore h2 {
  margin-top: 2.25rem;
}

/* —— Audience hubs —— */

.audience-kicker {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slag);
}

.audience-split {
  margin: 0.25rem 0 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.audience-panel {
  padding: 0 0 1.35rem;
}

.audience-panel-alt {
  padding-top: 1.25rem;
  border-top: 1px dashed var(--rule);
}

.audience-panel .track-title a {
  color: inherit;
  text-decoration: none;
}

.audience-panel .track-title a:hover {
  color: var(--slag-deep);
}

.path-steps {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.path-steps > li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.85rem;
  margin: 0;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.path-steps .path-n {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--slag);
  padding-top: 0.15rem;
}

.path-steps p {
  margin: 0.25rem 0 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.path-steps a {
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}

.path-steps a:hover {
  color: var(--slag-deep);
  border-bottom-color: var(--slag);
}

.link-list {
  margin: 0 0 1.5rem;
  padding-left: 1.15rem;
}

.link-list li {
  margin-bottom: 0.45rem;
}

@media (min-width: 720px) {
  .audience-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0 2rem;
  }

  .audience-panel-alt {
    padding-top: 0;
    border-top: 0;
    border-left: 1px dashed var(--rule);
    padding-left: 2rem;
  }
}



/* —— Home explore list —— */

.home-nav-grid {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.home-nav-grid li {
  margin: 0;
  border-bottom: 1px solid var(--rule-soft);
}

.home-nav-grid .hn-sec {
  border-bottom: 0;
  padding: 1.1rem 0 0.2rem;
}

.home-nav-grid .hn-sec .sec {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-faint);
}

.home-nav-grid a {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 0.75rem 1rem;
  padding: 0.65rem 0;
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.2s var(--ease);
}

.home-nav-grid a:hover {
  padding-left: 0.25rem;
}

.home-nav-grid a:hover .hn-label {
  color: var(--slag);
}

.hn-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink);
  transition: color 0.15s var(--ease);
}

.hn-desc {
  font-size: 0.95rem;
  color: var(--ink-muted);
}

/* —— 404 —— */

.not-found {
  padding: 3rem 0 2rem;
  max-width: 28rem;
}

.not-found h1 {
  font-size: 2.4rem;
}

/* —— Motion —— */

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(0.55rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes warn-edge {
  from { border-left-color: transparent; }
  to { border-left-color: var(--slag); }
}

@keyframes slag-rise {
  from {
    opacity: 0;
    transform: scaleY(0.4);
    transform-origin: top;
  }
  to {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
  }
}

@keyframes mark-settle {
  from {
    opacity: 0;
    transform: translateY(-0.35rem) rotate(-4deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .home-nav-grid a:hover {
    padding-left: 0;
  }

  .hero-cta .cta:hover {
    transform: none;
  }
}

/* —— Responsive —— */

@media (max-width: 899px) {
  .home-stage::after {
    display: none;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 1rem;
  }

  .home-stage::before {
    left: 0.15rem;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    margin-top: 0.65rem;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav > ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--rule-soft);
    background: var(--surface);
  }

  .site-nav a {
    display: block;
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--rule-soft);
    border-left: 3px solid transparent;
  }

  .site-nav a[aria-current="page"] {
    border-bottom-color: var(--rule-soft);
    border-left-color: var(--slag);
  }

  .nav-cluster {
    display: block;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
  }

  .nav-cluster.is-active {
    background: none;
    border: 0;
  }

  .nav-cluster-label {
    display: block;
    padding: 0.55rem 0.75rem 0.2rem;
    border-bottom: 1px solid var(--rule-soft);
  }

  .nav-cluster-list {
    display: block;
  }

  .nav-cluster-list a {
    padding-left: 1.25rem;
  }

  .meta-list li,
  .home-nav-grid a,
  .track-meta li {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .hn-label {
    color: var(--slag-deep);
  }

  .home-stage {
    min-height: 0;
    padding: 1.1rem 0 1.75rem;
  }

  .home-stage::before {
    left: -0.85rem;
  }

  .home-brand {
    flex-wrap: wrap;
  }
}

@media (min-width: 760px) {
  .track-split {
    grid-template-columns: 1fr 1fr;
    gap: 0 2rem;
    align-items: start;
  }

  .track {
    padding: 0;
  }

  .track-x {
    padding-top: 0;
    padding-left: 1.75rem;
    border-top: 0;
    border-left: 1px solid var(--rule);
  }

  .audience-grid {
    align-items: start;
  }
}


@media (min-width: 900px) {
  .layout {
    grid-template-columns: var(--nav-w) minmax(0, 1fr);
    gap: 2.25rem;
  }

  .side-nav {
    position: sticky;
    top: 1.25rem;
    align-self: start;
    padding-top: 0.25rem;
  }

  .side-nav > h2 {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-faint);
    margin: 0 0 0.55rem;
    padding: 0;
    border: 0;
  }

  .side-nav-tree {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .side-nav-tree > .nav-group {
    margin: 0 0 1rem;
  }

  .side-nav-tree > .nav-group:last-child {
    margin-bottom: 0;
  }

  .nav-group-label {
    display: block;
    margin: 0 0 0.3rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--ink-faint);
  }

  .nav-group ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .side-nav a {
    display: block;
    padding: 0.28rem 0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--ink-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 0.55rem;
    margin-left: -0.55rem;
    transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
  }

  .side-nav a:hover {
    color: var(--ink);
  }

  .side-nav a[aria-current="page"] {
    color: var(--ink);
    border-left-color: var(--slag);
  }

  .page-home .home-stage {
    min-height: min(68vh, 30rem);
  }
}

@media (max-width: 899px) {
  .side-nav {
    display: none;
  }
}

/* —— Print —— */

@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  body::before,
  body::after,
  .site-nav,
  .side-nav,
  .nav-toggle,
  .skip-link,
  .home-stage::before {
    display: none !important;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .callout {
    border: 1px solid #000;
    background: none;
  }

  pre {
    border: 1px solid #999;
    white-space: pre-wrap;
  }

  .hero-cta .cta {
    border: 1px solid #000;
    background: none;
  }
}