:root {
  --understory: #07100c;
  --wet-bark: #102219;
  --moss: #536b54;
  --leaf: #93a486;
  --lichen: #e3e9dd;
  --pulse: #e2be67;
  --muted: rgba(227, 233, 221, 0.66);
  --line: rgba(147, 164, 134, 0.2);
  --line-strong: rgba(147, 164, 134, 0.42);
  --clearing-about: #0a1912;
  --clearing-agent: #0e2017;
  --clearing-node: #0b1c14;
  --clearing-how: #0d1f16;
  --display: Optima, Candara, "Noto Sans", "Avenir Next", sans-serif;
  --serif: Optima, Candara, "Noto Sans", "Avenir Next", sans-serif;
  --sans: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --page: min(74rem, calc(100vw - 3rem));
}

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

html {
  color: var(--lichen);
  background: var(--understory);
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  background:
    radial-gradient(circle at 78% 18%, rgba(83, 107, 84, 0.1), transparent 29rem),
    var(--understory);
}

body:not(.home-page)::before {
  position: fixed;
  z-index: -2;
  inset: 0;
  content: "";
  background:
    linear-gradient(180deg, rgba(7, 16, 12, 0.8), rgba(7, 16, 12, 0.97)),
    url("./fig/shade-tree-banner.webp") center / cover no-repeat;
  filter: saturate(0.72) contrast(1.05);
  transform: scale(1.02);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

::selection {
  color: var(--understory);
  background: var(--pulse);
}

:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 50;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  color: var(--understory);
  background: var(--lichen);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-nav {
  position: relative;
  z-index: 12;
  display: flex;
  width: var(--page);
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.home-hero .site-nav {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  border-bottom-color: rgba(227, 233, 221, 0.12);
}

.wordmark {
  display: inline-flex;
  flex-shrink: 0;
  min-height: 2.75rem;
  gap: 0.7rem;
  align-items: center;
  font-family: var(--display);
  font-weight: 620;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.tree-mark {
  position: relative;
  display: inline-flex;
  width: 1.65rem;
  height: 1.3rem;
  align-items: flex-end;
}

.tree-mark i {
  position: absolute;
  bottom: 0.37rem;
  width: 0.68rem;
  height: 0.68rem;
  background: var(--leaf);
  border-radius: 50% 42% 48% 44%;
}

.tree-mark i::after {
  position: absolute;
  top: 0.54rem;
  left: 50%;
  width: 1px;
  height: 0.5rem;
  content: "";
  background: var(--pulse);
}

.tree-mark i:nth-child(1) { left: 0; transform: scale(0.78); }
.tree-mark i:nth-child(2) { bottom: 0.5rem; left: 0.48rem; }
.tree-mark i:nth-child(3) { right: 0; transform: scale(0.68); }

.nav-links {
  display: flex;
  gap: clamp(1rem, 3vw, 2.4rem);
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
}

.nav-links a,
.site-footer a,
.role-link {
  transition: color 160ms ease;
}

.nav-links a {
  display: inline-flex;
  min-width: 2.75rem;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
}

.nav-links a:hover,
.site-footer a:hover,
.role-link:hover {
  color: var(--pulse);
}

.home-hero {
  position: relative;
  min-height: clamp(43rem, 92svh, 56rem);
  overflow: hidden;
  isolation: isolate;
  background: #101d16;
}

.home-hero::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(7, 16, 12, 0.93) 0%, rgba(7, 16, 12, 0.7) 29%, rgba(7, 16, 12, 0.18) 52%, transparent 72%),
    linear-gradient(0deg, var(--understory) 0%, transparent 28%),
    radial-gradient(circle at 73% 48%, transparent 0 28%, rgba(7, 16, 12, 0.1) 72%);
}

.grove-stage {
  position: absolute;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 47%, rgba(83, 107, 84, 0.26), transparent 32%),
    linear-gradient(135deg, #17271c, #07100c 78%);
}

.grove-stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 700ms ease;
}

.grove-stage.is-live canvas { opacity: 1; }

.forest-fallback {
  position: absolute;
  inset: 5% -3% 0 36%;
  opacity: 0.84;
  transition: opacity 500ms ease;
}

.forest-fallback::before {
  position: absolute;
  inset: 12% 2% 3% 6%;
  content: "";
  background: radial-gradient(ellipse at center, rgba(3, 9, 6, 0.68), rgba(7, 16, 12, 0.42) 44%, rgba(7, 16, 12, 0.14) 72%, transparent 100%);
  transform: rotate(-8deg);
}

.forest-fallback::after {
  position: absolute;
  right: 8%;
  bottom: 26%;
  left: -18%;
  height: 4px;
  content: "";
  background: repeating-linear-gradient(90deg, var(--pulse) 0 9px, transparent 9px 17px);
  filter: drop-shadow(0 0 8px rgba(226, 190, 103, 0.42));
  opacity: 0.72;
  transform: rotate(-17deg);
  transform-origin: right;
}

.grove-stage.is-live .forest-fallback { opacity: 0; }

.forest-fallback i {
  position: absolute;
  top: var(--y);
  left: var(--x);
  width: var(--s);
  aspect-ratio: 1.14;
  background:
    radial-gradient(circle at 34% 25%, rgba(147, 164, 134, 0.86), transparent 22%),
    radial-gradient(circle at 54% 55%, #436247 0 42%, #263f30 73%);
  border-radius: 52% 40% 55% 42%;
  filter: drop-shadow(1.2rem 1.6rem 1rem rgba(0, 0, 0, 0.42));
  transform: rotate(var(--r));
}

.forest-fallback i::after {
  position: absolute;
  right: -18%;
  bottom: -8%;
  width: 62%;
  aspect-ratio: 1;
  content: "";
  background: #36523c;
  border-radius: 48% 55% 42% 56%;
}

.forest-fallback i:nth-child(1) { --x: 4%; --y: 11%; --s: 16%; --r: -8deg; }
.forest-fallback i:nth-child(2) { --x: 20%; --y: 3%; --s: 19%; --r: 12deg; }
.forest-fallback i:nth-child(3) { --x: 42%; --y: 9%; --s: 15%; --r: -4deg; }
.forest-fallback i:nth-child(4) { --x: 62%; --y: 2%; --s: 21%; --r: 8deg; }
.forest-fallback i:nth-child(5) { --x: 82%; --y: 17%; --s: 16%; --r: -14deg; }
.forest-fallback i:nth-child(6) { --x: 3%; --y: 35%; --s: 19%; --r: 7deg; }
.forest-fallback i:nth-child(7) { --x: 29%; --y: 29%; --s: 17%; --r: -9deg; }
.forest-fallback i:nth-child(8) { --x: 51%; --y: 34%; --s: 22%; --r: 4deg; }
.forest-fallback i:nth-child(9) { --x: 76%; --y: 41%; --s: 17%; --r: 14deg; }
.forest-fallback i:nth-child(10) { --x: 12%; --y: 61%; --s: 17%; --r: -6deg; }
.forest-fallback i:nth-child(11) { --x: 34%; --y: 59%; --s: 21%; --r: 10deg; }
.forest-fallback i:nth-child(12) { --x: 61%; --y: 66%; --s: 18%; --r: -13deg; }
.forest-fallback i:nth-child(13) { --x: 82%; --y: 69%; --s: 15%; --r: 5deg; }
.forest-fallback i:nth-child(14) { --x: 48%; --y: 80%; --s: 15%; --r: -4deg; }

.home-copy {
  position: absolute;
  z-index: 5;
  top: 49%;
  left: max(1.5rem, calc((100vw - 74rem) / 2));
  width: min(37rem, 46vw);
  transform: translateY(-38%);
}

.home-copy h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4.2rem, 6.5vw, 6.6rem);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.home-copy h1 span { display: block; }

.home-hero .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 2rem;
  margin-top: 2.6rem;
}

.home-hero .hero-actions a {
  display: inline-flex;
  gap: 0.65rem;
  align-items: center;
  padding: 0.65rem 0.05rem 0.55rem;
  color: var(--lichen);
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.86rem;
  font-weight: 620;
  min-height: 2.75rem;
  transition: color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.home-hero .hero-actions a:nth-child(n + 2) { color: var(--muted); }

.home-hero .hero-actions a:hover {
  color: var(--pulse);
  border-color: var(--pulse);
  transform: translateY(-2px);
}

.home-main {
  width: 100%;
  --section-gutter: max(1.5rem, calc((100% - 74rem) / 2));
}

.about-panel {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
  gap: clamp(2rem, 7vw, 7rem);
  margin-top: clamp(3.5rem, 7vw, 6.5rem);
  padding: clamp(2.5rem, 5vw, 4.5rem) var(--section-gutter);
  background: var(--clearing-about);
  border-top: 1px solid var(--line);
}

.about-panel h2 {
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.about-panel p {
  max-width: 22ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2rem, 3.6vw, 3.5rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.about-panel a {
  color: var(--lichen);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.16em;
  white-space: nowrap;
  transition: color 160ms ease, text-decoration-color 160ms ease;
}

.about-panel a:hover {
  color: var(--pulse);
  text-decoration-color: var(--pulse);
}

.role-trails {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 7fr) clamp(4.5rem, 8vw, 7rem) minmax(16rem, 3fr);
  margin-top: 0;
  padding: 0 var(--section-gutter);
  overflow: hidden;
  background: var(--clearing-agent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.role {
  display: grid;
  min-width: 0;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-content: start;
  padding: clamp(3rem, 5vw, 4.75rem) 0;
  scroll-margin-top: 2rem;
}

.role:first-child {
  padding-right: clamp(2rem, 4vw, 4rem);
  background: var(--clearing-agent);
}

.role:last-child {
  padding-left: clamp(1.5rem, 2.8vw, 2.75rem);
  background: var(--clearing-node);
  box-shadow: 50vw 0 0 var(--clearing-node);
}

.trail-junction {
  display: grid;
  min-width: 0;
  grid-template-rows: 1fr auto 1fr;
  place-items: center;
  color: var(--leaf);
  background: radial-gradient(circle, rgba(83, 107, 84, 0.17), transparent 67%);
}

.trail-junction i {
  width: 1px;
  height: 100%;
  background: rgba(226, 190, 103, 0.72);
}

.trail-junction span {
  padding: 1rem 0;
  font-family: var(--display);
  font-size: 0.82rem;
  line-height: 1.22;
  text-align: center;
}

.role-intro {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
}

.route-label {
  display: flex;
  width: 100%;
  gap: 0.65rem;
  align-items: center;
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.route-label span {
  color: var(--pulse);
}

.route-label::after {
  min-width: 1.5rem;
  height: 1px;
  flex: 1;
  content: "";
  background: var(--line);
}

.role h2 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2rem, 3.3vw, 3.15rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.04;
}

.role-link {
  display: inline-flex;
  min-height: 2.75rem;
  gap: 0.45rem;
  align-items: center;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.role-tools {
  display: grid;
  min-width: 0;
  gap: 1.2rem;
  align-content: start;
}

.tool-label {
  margin: 0 0 -0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.command {
  display: grid;
  width: 100%;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
  color: var(--leaf);
  background: rgba(16, 34, 25, 0.72);
  border-left: 2px solid rgba(226, 190, 103, 0.72);
  font-family: var(--mono);
}

.command code {
  min-width: 0;
  padding: 1rem 1.1rem;
  font-size: 0.78rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
  white-space: normal;
}

.agent-install code {
  overflow-x: auto;
  white-space: nowrap;
}

.role:last-child .command {
  grid-template-columns: 1fr;
}

.role:last-child .copy-command {
  border-top: 1px solid var(--line);
  border-left: 0;
}

.copy-command {
  min-width: 7.6rem;
  min-height: 2.75rem;
  padding: 0.75rem 1rem;
  color: var(--lichen);
  background: transparent;
  border: 0;
  border-left: 1px solid var(--line);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.72rem;
  transition: color 160ms ease, background 160ms ease;
}

.copy-command:hover {
  color: var(--pulse);
  background: rgba(226, 190, 103, 0.05);
}

.handoff {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  justify-content: center;
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem);
  text-align: center;
  background: rgba(226, 190, 103, 0.045);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.handoff-copy {
  display: grid;
  gap: 0.35rem;
  justify-items: center;
}

.handoff .handoff-step {
  margin-bottom: 0.2rem;
  color: var(--pulse);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.handoff strong {
  color: var(--lichen);
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 620;
}

.handoff span {
  color: var(--muted);
  font-size: 0.82rem;
}

.handoff .task-copy {
  flex: 0 0 auto;
  color: var(--understory);
  background: var(--pulse);
  border: 1px solid var(--pulse);
  font-family: var(--sans);
  font-weight: 680;
}

.handoff .task-copy:hover {
  color: var(--lichen);
  background: transparent;
}

.copy-fallback {
  display: block;
  width: 100%;
  padding: 1rem;
  color: var(--muted);
  background: rgba(16, 34, 25, 0.54);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.copy-fallback[hidden] { display: none; }

.common-root {
  display: grid;
  grid-template-columns: auto minmax(16rem, 1fr) minmax(18rem, 1fr) auto;
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: center;
  padding: 1.25rem var(--section-gutter);
  background: #12271c;
  border-bottom: 1px solid var(--line);
}

.common-root > span {
  color: var(--leaf);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.common-root strong {
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 560;
}

.common-root em {
  color: var(--muted);
  font-size: 0.78rem;
  font-style: normal;
}

.common-root a {
  display: inline-flex;
  min-height: 2.75rem;
  gap: 0.4rem;
  align-items: center;
  color: var(--pulse);
  font-size: 0.78rem;
  white-space: nowrap;
}

.how-panel {
  margin: 0;
  padding: clamp(4.5rem, 8vw, 7rem) var(--section-gutter) clamp(3.5rem, 6vw, 5rem);
  background: var(--clearing-how);
}

.how-panel > h2 {
  margin: 0 0 clamp(2.5rem, 4.5vw, 4rem);
  font-family: var(--display);
  font-size: clamp(2.6rem, 4.4vw, 4.4rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.how-stack {
  display: grid;
}

.how-mechanism {
  padding: 0 0 clamp(3.5rem, 6vw, 5rem);
}

.how-mechanism + .how-mechanism {
  padding-top: clamp(3.5rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
}

.how-copy {
  max-width: 46rem;
}

.how-copy h3 {
  margin: 0;
  color: var(--lichen);
  font-family: var(--display);
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
}

.how-copy p,
.boundary {
  max-width: 62ch;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.72;
}

.how-copy a,
.boundary a {
  color: var(--lichen);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.2em;
  transition: color 160ms ease, text-decoration-color 160ms ease;
}

.how-copy a:hover,
.boundary a:hover {
  color: var(--pulse);
  text-decoration-color: var(--pulse);
}

.how-visual {
  display: block;
  width: 100%;
  margin-top: clamp(2rem, 4vw, 3.5rem);
}

.how-visual img {
  width: 100%;
  border: 0;
  background: transparent;
}

.boundary {
  margin-top: 1.25rem;
}

.protocol-link {
  margin: -2rem 0 0;
  text-align: right;
}

.protocol-link a {
  display: inline-flex;
  min-height: 2.75rem;
  gap: 0.45rem;
  align-items: center;
  color: var(--muted);
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.8rem;
  transition: color 160ms ease, border-color 160ms ease;
}

.protocol-link a:hover {
  color: var(--pulse);
  border-color: var(--pulse);
}

.solid-action,
.line-action {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.05rem;
  border: 1px solid var(--line-strong);
  font-size: 0.82rem;
  font-weight: 650;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease;
}

.solid-action {
  color: var(--understory);
  background: var(--lichen);
  border-color: var(--lichen);
}

.solid-action:hover { color: var(--lichen); background: transparent; }
.line-action:hover { color: var(--pulse); border-color: var(--pulse); }

.guide-main {
  width: min(66rem, calc(100vw - 3rem));
  margin: clamp(3rem, 8vw, 7rem) auto;
}

.guide-intro {
  max-width: 50rem;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.guide-intro h1 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.94;
}

.guide-intro p {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.guide-steps { border-top: 1px solid var(--line); }

.guide-step {
  min-width: 0;
  padding: clamp(2rem, 4vw, 3.5rem);
  background: rgba(16, 34, 25, 0.67);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.guide-step h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.guide-step p,
.guide-step li {
  max-width: 48rem;
  color: var(--muted);
}

.guide-step a:not(.solid-action, .line-action) {
  color: var(--lichen);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.2em;
}

.guide-step ul { padding-left: 1.2rem; }
.guide-step .command { margin: 1.4rem 0; }
.guide-note { border-left: 2px solid var(--pulse); }

.guide-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.site-footer {
  display: flex;
  width: var(--page);
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  padding: 1.6rem 0 2.5rem;
  color: rgba(227, 233, 221, 0.5);
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
}

.footer-signature {
  display: grid;
  gap: 0.45rem;
}

.footer-signature p {
  max-width: 24ch;
  margin: 0;
  color: rgba(227, 233, 221, 0.86);
  font-family: var(--display);
  font-size: clamp(1.05rem, 1.6vw, 1.4rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.footer-signature span {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

.site-footer a {
  display: inline-flex;
  min-width: 2.75rem;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
}

@media (max-width: 900px) {
  :root { --page: min(100% - 2rem, 46rem); }

  .home-main { --section-gutter: 1rem; }

  .home-hero { min-height: 44rem; }

  .home-hero::after {
    background:
      linear-gradient(180deg, rgba(7, 16, 12, 0.9) 0%, rgba(7, 16, 12, 0.6) 36%, rgba(7, 16, 12, 0.05) 58%, rgba(7, 16, 12, 0.9) 100%),
      linear-gradient(0deg, var(--understory), transparent 28%);
  }

  .forest-fallback { inset: 52% -8% -6% 7%; }

  .home-copy {
    top: 8.7rem;
    right: 1rem;
    left: 1rem;
    width: auto;
    transform: none;
  }

  .home-copy h1 { font-size: clamp(3.8rem, 11vw, 5.2rem); }
  .home-hero .hero-actions { margin-top: 1.8rem; }

  .about-panel { grid-template-columns: 1fr; }

  .how-visual {
    max-width: 45rem;
    margin-right: auto;
    margin-left: auto;
  }

  .role-trails {
    grid-template-columns: minmax(0, 1fr) 4.5rem minmax(15rem, 0.48fr);
  }

  .role { gap: 2rem; }
  .role:first-child { padding-right: 1.5rem; }
  .role:last-child { padding-left: 1.35rem; }

  .handoff {
    align-items: stretch;
    flex-direction: column;
  }

  .common-root {
    grid-template-columns: auto minmax(12rem, 1fr) auto;
  }

  .common-root em { display: none; }

}

@media (max-width: 740px) {
  .role-trails {
    grid-template-columns: 1fr;
    padding: 0;
    overflow: visible;
    background: transparent;
    border: 0;
  }

  .role {
    padding: clamp(2.5rem, 7vw, 4rem) var(--section-gutter);
    border-top: 1px solid var(--line);
  }

  .role:first-child { padding-right: var(--section-gutter); }

  .role:last-child {
    padding-left: var(--section-gutter);
    border-bottom: 1px solid var(--line);
    box-shadow: none;
  }

  .trail-junction {
    min-height: 5rem;
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: auto;
    padding: 0 var(--section-gutter);
  }

  .trail-junction i {
    width: 100%;
    height: 1px;
  }

  .trail-junction span { padding: 0 1rem; }

  .role-intro {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
  }

  .route-label { flex-basis: 100%; }

  .role-link {
    flex: 0 0 auto;
    margin: 0 0 0.35rem 1rem;
  }

  .common-root {
    grid-template-columns: 1fr auto;
  }

  .common-root strong {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

@media (max-width: 600px) {
  .site-nav {
    width: min(100% - 2rem, 46rem);
    align-items: flex-start;
    padding-top: 1.15rem;
  }

  .home-hero .nav-links a:nth-child(-n + 2) { display: none; }
  .wordmark {
    gap: 0.4rem;
    font-size: 0.72rem;
  }

  .tree-mark {
    width: 1.4rem;
    transform: scale(0.84);
    transform-origin: left center;
  }

  .nav-links {
    gap: clamp(0.2rem, 1.4vw, 0.45rem);
    font-size: 0.72rem;
  }
  .home-hero { min-height: 43rem; }
  .grove-stage canvas,
  .forest-fallback { transform: translateY(1.25rem); }
  .home-copy { top: 7.5rem; }

  .home-copy h1 {
    font-size: clamp(3.2rem, 14vw, 4.1rem);
    letter-spacing: -0.06em;
  }

  .home-hero .hero-actions {
    display: grid;
    gap: 0.45rem;
    justify-items: start;
    margin-top: 1.45rem;
  }

  .home-hero .hero-actions a { padding-block: 0.65rem; }

  .about-panel {
    gap: 1.25rem;
    margin-top: 2.5rem;
    padding-block: 2.5rem;
  }

  .role {
    gap: 1.5rem;
    padding-block: 2.5rem;
  }

  .role-intro {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
  }

  .role-link { margin: 0.8rem 0 0; }
  .command { grid-template-columns: 1fr; }

  .command code {
    padding: 0.9rem;
    font-size: 0.74rem;
  }

  .copy-command {
    min-height: 2.9rem;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .handoff {
    align-items: stretch;
    flex-direction: column;
  }

  .handoff .task-copy { width: 100%; }

  .how-panel {
    padding-block: 5rem 3.5rem;
  }

  .how-panel > h2 {
    margin-bottom: 2.75rem;
  }

  .how-mechanism {
    padding-bottom: 3.5rem;
  }

  .how-mechanism + .how-mechanism {
    padding-top: 3.5rem;
  }

  .how-visual { margin-top: 1.75rem; }

  .protocol-link { margin-top: -1.25rem; }

  .guide-main {
    width: min(100% - 1rem, 46rem);
    margin: 2.5rem auto;
  }

  .guide-step { padding: 1.7rem 1rem; }

  .site-footer {
    align-items: flex-start;
    gap: 1rem;
  }

  .site-footer nav {
    display: grid;
    gap: 0.35rem;
    justify-items: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}