/* ============================================================
   MARTIN HENSLEY — CARTOGRAPHIC FUTURISM
   Aesthetic: Topographic contour lines meet LiDAR point clouds.
   Urban forestry meets autonomous sensing.
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --bg-deep:       #060a12;
  --bg-surface:    #0c1220;
  --bg-elevated:   #121a2e;
  --bg-card:       #0f1626;
  
  --text-primary:  #e8e4db;
  --text-secondary:#8a9ab5;
  --text-muted:    #4a5a78;
  
  --green:         #2dd4a8;
  --green-dim:     #1a7a62;
  --amber:         #f0a030;
  --amber-dim:     #8a5c1a;
  --blue:          #4a9eff;
  --blue-dim:      #2a5a9a;
  --red:           #f06050;
  --red-dim:       #8a3028;
  
  --topo-line:     rgba(45, 212, 168, 0.06);
  --topo-line-bright: rgba(45, 212, 168, 0.12);

  --font-display:  'Instrument Serif', Georgia, serif;
  --font-body:     'DM Sans', -apple-system, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;
  
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  8rem;
  --space-2xl: 6rem;
  
  --container:     min(72rem, 90vw);
  --container-narrow: min(52rem, 90vw);

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --duration-slow: 1s;
  --duration-med:  0.6s;
  --duration-fast: 0.3s;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--green);
  color: var(--bg-deep);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* --- Topographic Background Canvas --- */
#topo-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem clamp(1.5rem, 4vw, 3rem);
  transition: background var(--duration-fast) ease, backdrop-filter var(--duration-fast) ease;
}

.nav.scrolled {
  background: rgba(6, 10, 18, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid rgba(45, 212, 168, 0.08);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--green);
  position: relative;
  z-index: 101;
}

.nav__logo-short,
.nav__logo-full {
  transition: opacity 0.4s ease, max-width 0.4s ease;
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
}

.nav__logo-full {
  opacity: 0;
  max-width: 0;
  position: absolute;
}

.nav__logo-short {
  opacity: 1;
}

.nav__logo.expanded .nav__logo-short {
  opacity: 0;
  max-width: 0;
  position: absolute;
}

.nav__logo.expanded .nav__logo-full {
  opacity: 1;
  max-width: 20rem;
  position: relative;
}

.nav__links { display: flex; gap: 2.5rem; }

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--green);
  transition: width var(--duration-med) var(--ease-out-expo);
}

.nav__link:hover { color: var(--text-primary); }
.nav__link:hover::after { width: 100%; }

.nav__menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  z-index: 101;
}

.nav__menu span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--duration-fast) ease;
  position: absolute;
  left: 0;
}

.nav__menu span:first-child { top: 0; }
.nav__menu span:last-child { bottom: 0; }

.nav__menu.active span:first-child { top: 50%; transform: translateY(-50%) rotate(45deg); }
.nav__menu.active span:last-child { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(6, 10, 18, 0.97);
  backdrop-filter: blur(40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-med) ease;
}

.mobile-nav.active { opacity: 1; pointer-events: all; }

.mobile-nav__link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
}

.mobile-nav__link:hover { color: var(--green); }

/* --- Hero --- */
.hero {
  position: relative;
  z-index: 1;
  min-height: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-lg) clamp(1.5rem, 4vw, 3rem) var(--space-md);
}

.hero__content { max-width: var(--container); margin: 0 auto; width: 100%; }

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.hero__coordinates {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--green);
}

.hero__divider { color: var(--text-muted); font-weight: 200; }

.hero__role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 9rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.hero__title span { display: inline-block; }
.hero__title span:last-child { font-style: italic; color: var(--text-secondary); margin-left: 0.15em; }

.hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 36rem;
  margin-bottom: var(--space-lg);
}

.hero__subtitle em {
  font-style: normal;
  color: var(--green);
  font-weight: 500;
}

.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--duration-fast) ease;
}

.btn--primary {
  background: var(--green);
  color: var(--bg-deep);
  border-color: var(--green);
}

.btn--primary:hover {
  background: transparent;
  color: var(--green);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--text-muted);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

/* Scroll indicator */
.hero__scroll-indicator {
  position: relative;
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.hero__scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--green), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* --- Sections (shared) --- */
.section {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) 0;
}

.section__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.section__label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--space-md);
}

.section__number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--green);
  letter-spacing: 0.15em;
}

.section__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section__heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.accent-green { color: var(--green); }
.accent-amber { color: var(--amber); }
.accent-blue { color: var(--blue); }

.section__lede {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 48rem;
  margin-bottom: var(--space-md);
}

.section__lede em {
  font-style: normal;
  color: var(--text-primary);
  font-weight: 500;
}

/* --- NRMTech --- */
.nrmtech { border-top: 1px solid var(--topo-line-bright); }

.nrmtech__manifesto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(20rem, 100%), 1fr));
  gap: 1.5rem;
}

.manifesto__card {
  background: var(--bg-card);
  border: 1px solid rgba(45, 212, 168, 0.08);
  padding: var(--space-md);
  transition: border-color var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.manifesto__card:hover {
  border-color: rgba(45, 212, 168, 0.2);
  transform: translateY(-2px);
}

.manifesto__icon {
  width: 48px;
  height: 48px;
  color: var(--green);
  margin-bottom: var(--space-sm);
  opacity: 0.7;
}

.manifesto__card h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.manifesto__card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.domains__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.domains__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(14rem, 100%), 1fr));
  gap: 1px;
  background: rgba(45, 212, 168, 0.06);
}

.domain__item {
  background: var(--bg-surface);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: background var(--duration-fast) ease;
}

.domain__item:hover { background: var(--bg-elevated); }

.domain__name {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.domain__detail {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* --- Silvibot --- */
.silvibot { border-top: 1px solid rgba(240, 160, 48, 0.1); }

.silvi__viz {
  position: relative;
  width: 100%;
  height: clamp(300px, 40vw, 500px);
  margin-bottom: var(--space-xl);
  overflow: hidden;
  border: 1px solid rgba(240, 160, 48, 0.1);
  background: var(--bg-surface);
}

#lidar-canvas { width: 100%; height: 100%; display: block; }

.silvi__viz-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  display: flex;
  gap: 2.5rem;
  background: linear-gradient(to top, rgba(6, 10, 18, 0.9), transparent);
  flex-wrap: wrap;
}

.silvi__stat { display: flex; flex-direction: column; gap: 0.15rem; }

.silvi__stat-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--amber);
}

.silvi__stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.silvi__columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(22rem, 100%), 1fr));
  gap: 2rem;
  margin-bottom: var(--space-xl);
}

.silvi__block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 0.75rem;
}

.silvi__block strong { color: var(--amber); font-weight: 500; }

.label-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border: 1px solid;
}

.label-badge--red { color: var(--red); border-color: var(--red-dim); background: rgba(240, 96, 80, 0.06); }
.label-badge--green { color: var(--green); border-color: var(--green-dim); background: rgba(45, 212, 168, 0.06); }

.silvi__arch-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.silvi__arch-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.arch__node {
  background: var(--bg-card);
  border: 1px solid rgba(240, 160, 48, 0.08);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color var(--duration-fast) ease;
}

.arch__node:hover { border-color: rgba(240, 160, 48, 0.25); }

.arch__node-icon { width: 32px; height: 32px; color: var(--amber); opacity: 0.8; }

.arch__node-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
}

.arch__node-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.silvi__market h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.silvi__market-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.market__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 0.4rem 1rem;
  background: var(--bg-card);
  border: 1px solid rgba(240, 160, 48, 0.1);
  color: var(--text-secondary);
  transition: all var(--duration-fast) ease;
}

.market__tag:hover { border-color: var(--amber); color: var(--amber); }

/* --- Roadmap --- */
.silvi__roadmap {
  margin-top: var(--space-xl);
}

.roadmap__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.roadmap__track::before {
  content: '';
  position: absolute;
  top: 11px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber), var(--amber-dim) 50%, var(--text-muted));
}

.roadmap__phase {
  position: relative;
  padding-top: 2rem;
}

.roadmap__phase:not(:last-child) {
  border-right: 1px solid rgba(240, 160, 48, 0.08);
}

.roadmap__phase:not(:first-child) .roadmap__content {
  padding-left: 1.5rem;
}

.roadmap__marker {
  position: absolute;
  top: 4px;
  left: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  background: var(--bg-deep);
  transition: all var(--duration-fast) ease;
}

.roadmap__phase--active .roadmap__marker {
  border-color: var(--amber);
  background: var(--amber);
  box-shadow: 0 0 12px rgba(240, 160, 48, 0.4), 0 0 24px rgba(240, 160, 48, 0.15);
}

.roadmap__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.roadmap__label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--amber-dim);
}

.roadmap__phase--active .roadmap__label {
  background: rgba(240, 160, 48, 0.1);
}

.roadmap__timeline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.roadmap__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.roadmap__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
  padding-right: 1rem;
}

.roadmap__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.roadmap__metric {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.6rem 0.8rem;
  background: rgba(240, 160, 48, 0.04);
  border: 1px solid rgba(240, 160, 48, 0.1);
  transition: border-color var(--duration-fast) ease;
}

.roadmap__metric:hover {
  border-color: rgba(240, 160, 48, 0.3);
}

.roadmap__metric-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--amber);
}

.roadmap__metric-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* --- Papers --- */
.papers { border-top: 1px solid var(--topo-line-bright); }

.papers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(20rem, 100%), 1fr));
  gap: 1rem;
}

.paper__card {
  background: var(--bg-card);
  border: 1px solid rgba(45, 212, 168, 0.06);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.paper__card:hover {
  border-color: rgba(45, 212, 168, 0.15);
  transform: translateY(-2px);
}

.paper__status {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  width: fit-content;
  padding: 0.2rem 0.6rem;
  border: 1px solid;
}

.paper__status--published { color: var(--green); border-color: var(--green-dim); background: rgba(45, 212, 168, 0.06); }
.paper__status--active { color: var(--green); border-color: var(--green-dim); }
.paper__status--concept { color: var(--green); border-color: var(--green-dim); }

.paper__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  text-decoration: none;
  margin-top: auto;
  padding-top: 0.5rem;
  transition: color var(--duration-fast) ease;
}
.paper__link:hover { color: var(--text-primary); }
.paper__link svg { width: 14px; height: 14px; }

.paper__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--text-primary);
}

.paper__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.paper__target {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* --- About --- */
.about { border-top: 1px solid var(--topo-line-bright); }

.about__content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about__lead {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-style: italic;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.about__bio p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.credential__timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-md);
}

.credential__item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(45, 212, 168, 0.06);
}

.credential__item:last-child { border-bottom: none; }

.credential__period {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
}

.credential__role {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.credential__org {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.credential__education {
  border-top: 1px solid rgba(45, 212, 168, 0.06);
  padding-top: var(--space-sm);
}

/* --- Contact --- */
.about__contact {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.about__contact-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
}

.about__contact-email {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

/* --- Footer --- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--topo-line-bright);
  padding: var(--space-lg) 0;
}

.footer__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
}

.footer__tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.footer__links { display: flex; gap: 1.5rem; }

.footer__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  transition: color var(--duration-fast) ease;
}

.footer__link:hover { color: var(--green); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy,
.footer__note {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer__note a { color: var(--green-dim); transition: color var(--duration-fast) ease; }
.footer__note a:hover { color: var(--green); }

/* --- Reveal Animations --- */
.reveal-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  transition-delay: var(--delay, 0s);
}

.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__menu { display: block; }

  .about__content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .silvi__arch-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roadmap__track {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-left: 2rem;
  }

  .roadmap__track::before {
    top: 0;
    bottom: 0;
    left: 7px;
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--amber), var(--amber-dim) 50%, var(--text-muted));
  }

  .roadmap__phase { padding-top: 0; }
  .roadmap__phase:not(:last-child) { border-right: none; }
  .roadmap__phase:not(:first-child) .roadmap__content { padding-left: 0; }

  .roadmap__marker {
    top: 0;
    left: -2rem;
  }

  .section { padding: var(--space-xl) 0; }
}

@media (max-width: 480px) {
  .hero__eyebrow { flex-direction: column; gap: 0.35rem; }
  .hero__divider { display: none; }
  .hero__cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-up { opacity: 1; transform: none; transition: none; }
  .hero__scroll-line { animation: none; }
  #topo-canvas, #lidar-canvas { display: none; }
}