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

/* ── Custom Properties ── */
:root {
  --bg-primary: #0B0F14;
  --bg-secondary: #11161C;
  --text-primary: #E6EDF3;
  --text-secondary: #9AA4AF;
  --text-muted: #6B7280;
  --accent: #2BC4A5;
  --divider: rgba(255,255,255,0.06);
  --radius: 12px;
  --container: 1200px;
  --space: 8px;
}

/* ── Base ── */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Red Hat Display', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ── */
h1 {
  font-size: 56px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
}

h3 {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.2;
}

small, .text-small {
  font-size: 14px;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: calc(var(--space) * 3);
  padding-right: calc(var(--space) * 3);
}

.section {
  padding: 100px 0;
  border-bottom: 1px solid var(--divider);
}

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Focus ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Links ── */
a {
  color: inherit;
  text-decoration: none;
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: calc(var(--space) * 1.5) calc(var(--space) * 4);
  font-family: 'Red Hat Display', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background-color: #24a68c;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.12);
}

.btn-secondary:hover {
  border-color: rgba(255,255,255,0.28);
  background-color: rgba(255,255,255,0.04);
}

/* ═══════════════════════════════
   HEADER / NAV
   ═══════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(11,15,20,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 1.25);
}

.logo-img {
  display: block;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: calc(var(--space) * 4);
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* ═══════════════════════════════
   HERO
   ═══════════════════════════════ */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--divider);
  padding-top: 64px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 48%, rgba(43,196,165,0.12), transparent 30%),
    linear-gradient(90deg, rgba(11,15,20,0) 0%, rgba(43,196,165,0.035) 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  gap: calc(var(--space) * 8);
  align-items: center;
  width: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-content h1 {
  margin-bottom: calc(var(--space) * 3);
}

.hero-content > p:not(.eyebrow) {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: calc(var(--space) * 5);
}

.hero-buttons {
  display: flex;
  gap: calc(var(--space) * 2);
}

.hero-text-link {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space) * 1);
  margin-top: calc(var(--space) * 3);
  color: var(--accent);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.hero-text-link span {
  transition: transform 0.2s ease;
}

.hero-text-link:hover {
  color: #72dfc9;
}

.hero-text-link:hover span {
  transform: translateX(3px);
}

/* ═══════════════════════════════
   HERO SIGNAL VISUAL
   ═══════════════════════════════ */
.hero-visual {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.signal-visual {
  --signal-size: clamp(360px, 43vw, 540px);
  position: relative;
  width: min(var(--signal-size), 100%);
  aspect-ratio: 1 / 1;
  flex: 0 0 auto;
  isolation: isolate;
  transform-style: preserve-3d;
}

.signal-visual::before {
  content: '';
  position: absolute;
  inset: -8%;
  background:
    radial-gradient(ellipse at 54% 48%, rgba(43,196,165,0.08), rgba(43,196,165,0.025) 36%, transparent 72%),
    radial-gradient(ellipse at 62% 38%, rgba(126,231,255,0.055), transparent 42%);
  opacity: 0.72;
}

.signal-canvas {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: block;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 24px rgba(43,196,165,0.14));
}

/* ═══════════════════════════════
   ABOUT
   ═══════════════════════════════ */
.about {
  background-color: var(--bg-secondary);
}

.about-inner {
  width: min(100%, 780px);
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.about-inner h2 {
  margin-bottom: calc(var(--space) * 3);
}

.about-inner p {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.75;
}

/* ═══════════════════════════════
   WORKSPACE OVERVIEW
   ═══════════════════════════════ */
.workspace-overview {
  background:
    radial-gradient(circle at 50% 0%, rgba(43,196,165,0.06), transparent 38%),
    var(--bg-primary);
}

.workspace-overview-heading {
  max-width: 760px;
}

.workspace-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--space) * 3);
  margin-top: calc(var(--space) * 6);
}

.workspace-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--space) * 4.5);
  border: 1px solid rgba(43,196,165,0.16);
  border-radius: calc(var(--radius) * 1.25);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.025), transparent 55%),
    rgba(255,255,255,0.012);
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.workspace-card:hover {
  transform: translateY(-3px);
  border-color: rgba(43,196,165,0.34);
  background-color: rgba(43,196,165,0.025);
}

.workspace-card-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.workspace-card-copy > strong {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.2;
}

.workspace-card-copy > span:not(.workspace-card-action) {
  max-width: 480px;
  margin-top: calc(var(--space) * 2);
  color: var(--text-secondary);
  line-height: 1.7;
}

.workspace-card-action {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space) * 1);
  margin-top: calc(var(--space) * 3);
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.workspace-card-action span {
  transition: transform 0.2s ease;
}

.workspace-card:hover .workspace-card-action span {
  transform: translateX(3px);
}

/* ═══════════════════════════════
   TRACKER
   ═══════════════════════════════ */
.tracker-section {
  position: relative;
  overflow: hidden;
}

.tracker-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: -12%;
  width: 54%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(43,196,165,0.08), transparent 68%);
  pointer-events: none;
}

.tracker-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(480px, 1.16fr);
  gap: calc(var(--space) * 9);
  align-items: center;
}

.tracker-content {
  max-width: 510px;
}

.tracker-content h2 {
  max-width: 480px;
  font-size: 40px;
}

.tracker-content > p:not(.eyebrow) {
  margin-top: calc(var(--space) * 3);
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
}

.tracker-features {
  display: grid;
  gap: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 4) 0;
  list-style: none;
  color: var(--text-primary);
}

.tracker-features li {
  position: relative;
  padding-left: calc(var(--space) * 3);
}

.tracker-features li::before {
  content: '';
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(43,196,165,0.1);
}

.tracker-preview {
  position: relative;
  padding: calc(var(--space) * 4);
  border: 1px solid rgba(43,196,165,0.18);
  border-radius: calc(var(--radius) * 1.5);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.025), transparent 52%),
    #0E141A;
  box-shadow: 0 28px 80px rgba(0,0,0,0.28);
}

.tracker-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.035);
  pointer-events: none;
}

.tracker-preview-header {
  padding-bottom: calc(var(--space) * 2);
  border-bottom: 1px solid var(--divider);
}

.tracker-preview-header strong {
  display: block;
  font-size: 20px;
  font-weight: 500;
}

.tracker-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(var(--space) * 1.5);
  margin-top: calc(var(--space) * 2.5);
}

.tracker-metric {
  display: grid;
  align-content: space-between;
  min-height: 105px;
  padding: calc(var(--space) * 2);
  border: 1px solid var(--divider);
  border-radius: calc(var(--radius) * 0.8);
  background-color: rgba(255,255,255,0.018);
}

.tracker-metric span {
  color: var(--text-muted);
  font-size: 12px;
}

.tracker-metric strong {
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.25;
}

.tracker-chart {
  margin-top: calc(var(--space) * 2);
  padding: calc(var(--space) * 2.5);
  border: 1px solid var(--divider);
  border-radius: calc(var(--radius) * 0.8);
  background-color: rgba(255,255,255,0.018);
}

.tracker-chart-heading {
  display: flex;
  justify-content: space-between;
  gap: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 2.5);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
}

.tracker-chart-heading span:last-child {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 400;
}

.chart-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: calc(var(--space) * 2);
  align-items: center;
}

.chart-row + .chart-row {
  margin-top: calc(var(--space) * 1.5);
}

.chart-row > span {
  color: var(--text-secondary);
  font-size: 12px;
}

.chart-track {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background-color: rgba(255,255,255,0.055);
}

.chart-track span {
  display: block;
  width: var(--bar-width);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #218e78, var(--accent));
}

/* ═══════════════════════════════
   RESEARCH LAB
   ═══════════════════════════════ */
.research-section {
  background-color: var(--bg-secondary);
}

.research-section::before {
  right: auto;
  left: -12%;
}

.research-grid .research-content {
  grid-column: 2;
  grid-row: 1;
}

.research-grid .research-preview {
  grid-column: 1;
  grid-row: 1;
}

.research-preview-title span {
  display: block;
  margin-bottom: calc(var(--space) * 0.75);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-preview-title strong {
  font-size: 18px;
}

.research-evidence {
  display: grid;
  grid-template-columns: 1.25fr repeat(2, minmax(0, 0.75fr));
  gap: calc(var(--space) * 1.5);
  margin-top: calc(var(--space) * 2.5);
}

.evidence-summary,
.evidence-stat {
  display: flex;
  min-height: 112px;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--space) * 2);
  border: 1px solid var(--divider);
  border-radius: calc(var(--radius) * 0.8);
  background-color: rgba(255,255,255,0.018);
}

.evidence-summary > span:first-child,
.evidence-stat span {
  color: var(--text-muted);
  font-size: 12px;
}

.evidence-summary strong,
.evidence-stat strong {
  font-size: 18px;
  font-weight: 500;
}

.evidence-indicator {
  display: flex;
  gap: 4px;
}

.evidence-indicator i {
  width: 18%;
  height: 4px;
  border-radius: 999px;
  background-color: rgba(255,255,255,0.08);
}

.evidence-indicator i:nth-child(-n+3) {
  background-color: var(--accent);
}

.condition-comparison {
  margin-top: calc(var(--space) * 2);
  padding: calc(var(--space) * 2.5);
  border: 1px solid var(--divider);
  border-radius: calc(var(--radius) * 0.8);
  background-color: rgba(255,255,255,0.018);
}

.distribution-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: calc(var(--space) * 2);
  align-items: center;
}

.distribution-row + .distribution-row {
  margin-top: calc(var(--space) * 2);
}

.distribution-row > span {
  color: var(--text-secondary);
  font-size: 12px;
}

.distribution-track {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background-color: rgba(255,255,255,0.055);
}

.distribution-track i {
  position: absolute;
  top: 0;
  left: var(--range-start);
  width: var(--range-width);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(43,196,165,0.28), rgba(43,196,165,0.72));
}

.distribution-track i::after {
  content: '';
  position: absolute;
  top: 50%;
  left: var(--mean);
  width: 9px;
  height: 9px;
  border: 2px solid #0E141A;
  border-radius: 50%;
  background-color: #8be7d4;
  transform: translate(-50%, -50%);
}

@media (min-width: 901px) {
  .tracker-metric {
    align-content: start;
    row-gap: calc(var(--space) * 0.75);
  }
}

/* ═══════════════════════════════
   FOCUS ACCORDION
   ═══════════════════════════════ */
.focus-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: calc(var(--space) * 6);
}

.focus-accordion {
  border-bottom: 1px solid var(--divider);
}

.focus-accordion:first-child {
  border-top: 1px solid var(--divider);
}

.focus-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--space) * 3) 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}

.focus-accordion summary::-webkit-details-marker {
  display: none;
}

.focus-accordion summary::marker {
  display: none;
  content: '';
}

.focus-accordion summary h3 {
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.focus-accordion summary:hover h3 {
  color: var(--accent);
}

.accordion-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-left: calc(var(--space) * 2);
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  background-color: var(--text-muted);
  transition: transform 0.25s ease;
}

.accordion-icon::before {
  top: 50%;
  left: 0;
  width: 16px;
  height: 1.5px;
  transform: translateY(-50%);
}

.accordion-icon::after {
  top: 0;
  left: 50%;
  width: 1.5px;
  height: 16px;
  transform: translateX(-50%);
}

.focus-accordion[open] .accordion-icon::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.focus-accordion p {
  padding: 0 0 calc(var(--space) * 3) 0;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.6;
}

/* ═══════════════════════════════
   COMMUNITY LINKS
   ═══════════════════════════════ */
.section-intro {
  max-width: 680px;
  margin-top: calc(var(--space) * 2.5);
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(var(--space) * 3);
  margin-top: calc(var(--space) * 6);
}

.community-card {
  display: flex;
  align-items: flex-start;
  gap: calc(var(--space) * 2);
  min-height: 230px;
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  padding: calc(var(--space) * 4);
  background-color: rgba(255,255,255,0.012);
  color: var(--text-primary);
  transition: transform 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.community-card-featured {
  grid-column: span 2;
  border-color: rgba(43,196,165,0.2);
  background:
    radial-gradient(circle at 10% 0%, rgba(43,196,165,0.12), transparent 45%),
    rgba(43,196,165,0.025);
}

.community-icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent);
  opacity: 0.85;
}

.social-section {
  background-color: var(--bg-secondary);
}

.social-mark {
  display: inline-flex;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  border: 1px solid rgba(43,196,165,0.28);
  border-radius: 7px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
}

.community-card:hover {
  transform: translateY(-3px);
  background-color: rgba(255,255,255,0.028);
  border-color: rgba(43,196,165,0.28);
}

.community-card-copy {
  display: flex;
  min-width: 0;
  height: 100%;
  flex-direction: column;
}

.community-card-copy > strong {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.3;
}

.community-card-copy > span:not(.community-card-action) {
  margin-top: calc(var(--space) * 1.5);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.community-card-action {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space) * 1);
  margin-top: auto;
  padding-top: calc(var(--space) * 3);
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
}

.community-card-action span {
  transition: transform 0.2s ease;
}

.community-card:hover .community-card-action span {
  transform: translateX(3px);
}

/* ═══════════════════════════════
   SETUP LIBRARY
   ═══════════════════════════════ */
.library-main {
  min-height: calc(100vh - 64px);
  padding-top: 64px;
}

.library-hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--divider);
}

.library-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 35%, rgba(43,196,165,0.11), transparent 32%),
    linear-gradient(90deg, rgba(11,15,20,0) 0%, rgba(43,196,165,0.025) 100%);
  pointer-events: none;
}

.library-hero .container {
  position: relative;
}

.eyebrow {
  margin-bottom: calc(var(--space) * 2);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.library-hero h1 {
  max-width: 760px;
}

.library-intro {
  max-width: 680px;
  margin-top: calc(var(--space) * 3);
  color: var(--text-secondary);
  font-size: 18px;
}

.library-content {
  padding: 72px 0 100px;
}

.setup-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(var(--space) * 3);
}

.setup-card {
  display: flex;
  min-height: 280px;
  flex-direction: column;
  padding: calc(var(--space) * 4);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  background-color: var(--bg-secondary);
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.setup-card:hover {
  transform: translateY(-3px);
  border-color: rgba(43,196,165,0.35);
  background-color: #131a21;
}

.setup-card-meta,
.setup-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1);
}

.setup-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
}

.setup-tag-accent {
  border-color: rgba(43,196,165,0.25);
  color: var(--accent);
}

.setup-card h2 {
  margin-top: calc(var(--space) * 3);
  font-size: 24px;
}

.setup-card-description {
  margin-top: calc(var(--space) * 2);
  color: var(--text-secondary);
}

.setup-card-link {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space) * 1);
  margin-top: auto;
  padding-top: calc(var(--space) * 4);
  color: var(--accent);
  font-weight: 500;
}

.setup-card-link::after {
  content: '\2192';
  transition: transform 0.2s ease;
}

.setup-card:hover .setup-card-link::after {
  transform: translateX(3px);
}

.library-status {
  padding: calc(var(--space) * 6);
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-align: center;
}

.library-status h2 {
  margin-bottom: calc(var(--space) * 2);
  color: var(--text-primary);
}

.library-status-error {
  border-color: rgba(255,112,112,0.25);
}

.setup-detail {
  width: 100%;
  max-width: 820px;
  min-width: 0;
}

.setup-detail-header {
  padding-bottom: calc(var(--space) * 6);
  border-bottom: 1px solid var(--divider);
}

.back-link {
  display: inline-flex;
  margin-bottom: calc(var(--space) * 4);
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--text-primary);
}

.setup-detail-header h1 {
  margin-top: calc(var(--space) * 3);
}

.setup-section {
  padding: calc(var(--space) * 6) 0;
  border-bottom: 1px solid var(--divider);
}

.setup-section h2 {
  margin-bottom: calc(var(--space) * 3);
  font-size: 24px;
}

.portable-text {
  color: var(--text-secondary);
}

.portable-text > * + * {
  margin-top: calc(var(--space) * 2);
}

.portable-text h3 {
  margin-top: calc(var(--space) * 4);
  color: var(--text-primary);
}

.portable-text ul,
.portable-text ol {
  padding-left: calc(var(--space) * 3);
}

.portable-text li + li {
  margin-top: calc(var(--space) * 1);
}

.portable-text li::marker {
  color: var(--accent);
}

.portable-text strong {
  color: var(--text-primary);
}

.setup-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--space) * 3);
}

.setup-figure {
  overflow: hidden;
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  background-color: var(--bg-secondary);
}

.setup-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.setup-figure figcaption {
  padding: calc(var(--space) * 2);
  color: var(--text-muted);
  font-size: 13px;
}

/* ═══════════════════════════════
   FOOTER
   ═══════════════════════════════ */
.site-footer {
  padding: calc(var(--space) * 5) 0;
  border-top: 1px solid var(--divider);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: calc(var(--space) * 4);
}

.footer-left {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.footer-left p + p {
  margin-top: calc(var(--space) * 0.75);
  font-size: 13px;
  font-weight: 400;
}

.footer-left a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.footer-right {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 480px;
  text-align: right;
  line-height: 1.5;
}

/* ═══════════════════════════════
   RESPONSIVE — TABLET
   ═══════════════════════════════ */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .setup-library-page .nav-links {
    display: flex;
    gap: calc(var(--space) * 3);
  }

  .setup-library-page .setup-nav-secondary {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 4);
  }

  .hero-content {
    max-width: 680px;
  }

  .hero-visual {
    min-height: 360px;
  }

  .signal-visual {
    --signal-size: min(72vw, 430px);
  }

  .tracker-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 6);
  }

  .research-grid .research-content,
  .research-grid .research-preview {
    grid-column: auto;
    grid-row: auto;
  }

  .research-grid .research-content {
    order: 1;
  }

  .research-grid .research-preview {
    order: 2;
  }

  .tracker-content {
    max-width: 680px;
  }

  .tracker-preview {
    max-width: 720px;
  }

  .community-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace-pair {
    grid-template-columns: 1fr;
  }

  .community-card-featured {
    grid-column: span 2;
  }

  .setup-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .setup-detail {
    max-width: 720px;
  }
}

/* ═══════════════════════════════
   RESPONSIVE — MOBILE
   ═══════════════════════════════ */
@media (max-width: 640px) {
  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 24px;
  }

  .section {
    padding: 60px 0;
  }

  .container {
    padding-left: calc(var(--space) * 2.5);
    padding-right: calc(var(--space) * 2.5);
  }

  .hero {
    min-height: auto;
    padding-top: calc(64px + 60px);
    padding-bottom: 60px;
  }

  .hero-grid {
    display: block;
  }

  .hero-visual {
    display: none;
  }

  .hero::before {
    opacity: 0.45;
  }

  .hero-content h1 {
    max-width: 330px;
  }

  .hero-content > p:not(.eyebrow) {
    font-size: 16px;
    max-width: 330px;
  }

  .hero-buttons {
    flex-direction: column;
    max-width: 340px;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero-text-link {
    margin-top: calc(var(--space) * 2.5);
  }

  .tracker-content h2 {
    font-size: 28px;
  }

  .tracker-section::before {
    right: 0;
    width: 100%;
    background: radial-gradient(circle at 100% 48%, rgba(43,196,165,0.07), transparent 64%);
  }

  .tracker-content > p:not(.eyebrow),
  .about-inner p,
  .section-intro {
    font-size: 16px;
  }

  .tracker-preview {
    padding: calc(var(--space) * 2.5);
  }

  .workspace-pair {
    gap: calc(var(--space) * 2);
    margin-top: calc(var(--space) * 4);
  }

  .workspace-card {
    min-height: 260px;
    padding: calc(var(--space) * 3);
  }

  .workspace-card-copy > strong {
    font-size: 26px;
  }

  .tracker-metrics {
    grid-template-columns: 1fr;
  }

  .research-evidence {
    grid-template-columns: 1fr 1fr;
  }

  .evidence-summary {
    grid-column: span 2;
  }

  .tracker-metric {
    min-height: 82px;
  }

  .chart-row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: calc(var(--space) * 1.5);
  }

  .community-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 2);
    margin-top: calc(var(--space) * 4);
  }

  .community-card,
  .community-card-featured {
    grid-column: auto;
    min-height: 210px;
    padding: calc(var(--space) * 3);
  }

  .library-hero {
    padding: 48px 0 40px;
  }

  .library-hero::before {
    opacity: 0.7;
  }

  .library-hero h1 {
    overflow-wrap: anywhere;
    line-height: 1.15;
  }

  .library-intro {
    margin-top: calc(var(--space) * 2.5);
    font-size: 16px;
    line-height: 1.7;
  }

  .library-content {
    padding: 32px 0 56px;
  }

  .setup-grid,
  .setup-gallery {
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 2);
  }

  .setup-card {
    min-height: 0;
    padding: calc(var(--space) * 3);
  }

  .setup-card h2 {
    margin-top: calc(var(--space) * 2.5);
    font-size: 22px;
  }

  .setup-card-description {
    margin-top: calc(var(--space) * 1.5);
    line-height: 1.7;
  }

  .setup-card-link {
    width: 100%;
    min-height: 44px;
    margin-top: calc(var(--space) * 2);
    padding-top: calc(var(--space) * 1.5);
  }

  .library-status {
    padding: calc(var(--space) * 3);
  }

  .setup-detail-header {
    padding-bottom: calc(var(--space) * 4);
  }

  .back-link {
    align-items: center;
    min-height: 44px;
    margin-bottom: calc(var(--space) * 2);
  }

  .setup-section {
    padding: calc(var(--space) * 4.5) 0;
  }

  .setup-section h2 {
    margin-bottom: calc(var(--space) * 2);
    font-size: 22px;
    line-height: 1.3;
  }

  .portable-text {
    color: #AAB4BE;
    line-height: 1.7;
  }

  .portable-text > * + * {
    margin-top: calc(var(--space) * 1.5);
  }

  .portable-text ul,
  .portable-text ol {
    padding-left: calc(var(--space) * 2.5);
  }

  .portable-text li + li {
    margin-top: calc(var(--space) * 1.25);
  }

  .setup-figure figcaption {
    padding: calc(var(--space) * 1.5) calc(var(--space) * 2);
    line-height: 1.5;
  }

  .setup-library-page .nav-links {
    gap: calc(var(--space) * 2);
  }

  .setup-library-page .nav-links a {
    font-size: 13px;
  }

  .setup-library-page .site-footer {
    padding: calc(var(--space) * 4) 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: calc(var(--space) * 2);
  }

  .footer-right {
    text-align: left;
  }
}

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

  .fade-in {
    animation: none;
    transition: none;
  }
}