/* ===== Block Entrance Animations ===== */
.hero-label, .hero-uaii, .hero-line1, .hero-line2,
.block-label, .ui-big, .ui-line, .b2f-prep, .b2f-word, .b2f-statement, .b2f-bottom,
.phi-intro-line1, .phi-arrow-row, .phi-intro-line2, .phi-line,
.themes-intro-block,
.b4v2-card,
.cell {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}


.anim-in {
  opacity: 1 !important;
  transform: translate(0, 0) !important;
}

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

:root {
  /* UAII brand colors — based on urban.kaist.ac.kr */
  --uaii-bg: #2d3a4a;
  --uaii-fg: #111111;
  --uaii-muted: #6b7280;
  --uaii-brand: #1e3a8a;
  --uaii-accent: #2563eb;
  --uaii-card: #ffffff;
  --uaii-border: #e2e8f0;
  --uaii-nav-bg: rgba(252, 252, 252, 0.9);
  --uaii-nav-border: #e2e5eb;
  /* Layout */
  --nav-header-height: 56px;
  --nav-footer-height: 0px;
  /* Legacy compat for community/dashboard */
  --bs-secondary: #1e293b;
  --bs-fcl-dark: #1e3a8a;
  --bs-fcl-light: #eff6ff;
  --bs-black: #111111;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: 'Inter', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  color: var(--uaii-fg);
  overflow: hidden;
  background: var(--uaii-bg);
}

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

/* ===== Globe Background (landingmap) ===== */
#landingmap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  background: var(--uaii-bg);
  pointer-events: none;
}

#landingmap .scene-container {
  pointer-events: none !important;
}

/* ===== #landing - scroll-snap container ===== */
body.home #landing,
#landing {
  scroll-snap-type: y mandatory !important;
  height: calc(100vh - var(--nav-footer-height) - var(--nav-header-height));
  scroll-behavior: smooth;
  overflow-y: overlay;
  margin-right: 0;
  scrollbar-width: none;
  position: relative;
  z-index: 1;
  margin-top: var(--nav-header-height);
}

#landing::-webkit-scrollbar {
  display: none;
}

/* ===== Scroll Blocks ===== */
.scroll-block {
  height: calc(100vh - var(--nav-footer-height) - var(--nav-header-height));
  position: relative;
  z-index: 4;
  scroll-snap-align: start;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

/* ===== Navbar ===== */
.submenu.bg-secondary {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: var(--nav-header-height);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(252, 252, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e2e5eb;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: #1e3a8a;
}

.navbar-brand-sub {
  font-weight: 300;
  color: #94a3b8;
  margin-left: 6px;
}

.navbar-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.navbar-links a {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #64748b;
  transition: color 0.2s;
}

.navbar-links a:hover {
  color: #2563eb;
}

.navbar-links a.active {
  color: #2563eb;
}

/* ===== Block label (shared) ===== */
.block-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 48px;
}

/* ===== Hero Section (Block 1) ===== */
.hero-content {
  text-align: center;
  max-width: 860px;
}

.hero-eyebrow {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.3);
  margin-bottom: 16px;
}

.hero-content > h1 {
  display: none;
}

.hero-uaii {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -1px;
  text-align: center;
  margin-top: 16px;
  margin-bottom: 48px;
  white-space: nowrap;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.35), 0 0 60px rgba(255, 255, 255, 0.12);
}

.hero-headline {
  margin-bottom: 10px;
  text-align: center;
  width: 100%;
}


.hero-line1 {
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
  white-space: nowrap;
  display: inline-block;
}


.hero-from {
  font-weight: 300;
  font-size: 0.65em;
  vertical-align: middle;
}

.hero-ui-word {
  font-weight: 300;
  color: #ffffff;
  text-shadow: 0 0 24px rgba(180, 180, 180, 0.7);
}

.hero-mission {
  font-size: clamp(0.9rem, 1.3vw, 1.1rem);
  line-height: 1.6;
  color: #ffffff;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ===== Philosophy Section (Block 3) ===== */
.philosophy-content {
  max-width: 1100px;
  width: 100%;
  text-align: center;
}

.phi-quote {
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 300;
  font-style: italic;
  line-height: 1.75;
  color: #ffffff;
  letter-spacing: -0.2px;
  margin: 0 0 40px 0;
  padding: 0;
  border: none;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
}

.phi-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  overflow: hidden;
}

.phi-pillar {
  background: rgba(255, 255, 255, 0.02);
  padding: 24px 20px;
  text-align: left;
  transition: background 0.2s;
}

.phi-pillar:hover {
  background: rgba(255, 255, 255, 0.06);
}

.phi-pillar-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #93c5fd;
  margin-bottom: 10px;
}

.phi-pillar p {
  font-size: 0.82rem;
  line-height: 1.7;
  color: #cbd5e1;
  font-weight: 400;
}

.phi-intro {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  text-align: center;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.phi-intro-line1 {
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  font-weight: 400;
  color: #ffffff;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

.phi-intro-line2 {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  font-weight: 400;
  color: #ffffff;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

.phi-intro-line2 .ui-accent {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: #93c5fd;
  letter-spacing: -0.02em;
  line-height: 1.2;
  display: block;
  margin-top: 4px;
}

.phi-arrow-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 20px 0;
}

.phi-arrow-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.4);
}

.phi-arrow-label.ui-accent {
  color: #93c5fd;
  text-shadow: 0 0 20px rgba(96, 165, 250, 0.6);
  font-size: 0.75rem;
}

.phi-arrow-line {
  flex: 1;
  max-width: 200px;
  height: 1px;
  background: linear-gradient(to right, rgba(255,255,255,0.15), #93c5fd);
  position: relative;
  overflow: visible;
}

.phi-arrow-line::after {
  content: '';
  position: absolute;
  right: -1px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 5px solid #93c5fd;
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
}

.phi-arrow-dot {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #93c5fd;
  top: 50%;
  transform: translateY(-50%);
  animation: dotSlide 2s ease-in-out infinite;
}

@keyframes dotSlide {
  0%   { left: 0; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: calc(100% - 5px); opacity: 0; }
}

.phi-lines {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  width: fit-content;
  margin: 28px auto 0;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.phi-line {
  font-size: clamp(0.85rem, 1.15vw, 0.95rem);
  line-height: 1.8;
  color: #cbd5e1;
  font-weight: 400;
  padding-left: 16px;
  border-left: 2px solid rgba(255, 255, 255, 0.15);
}

.phi-line.highlight {
  color: #ffffff;
  border-left-color: #93c5fd;
}

.phi-line-gap {
  margin-top: 16px;
}

/* ===== Urban Intelligence Section (Block 2) ===== */
.urban-intel-content {
  max-width: 1300px;
  width: 100%;
  text-align: left;
  padding: 0 40px;
}

/* ── Block-2 F-layout ── */
.b2f-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0 60px;
  align-items: center;
  width: 100%;
}

.b2f-left {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.b2f-prep {
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  padding-left: 3px;
  line-height: 1.8;
}

.b2f-word {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -1.5px;
  color: rgba(255,255,255,0.55);
}

.b2f-glow {
  color: #93c5fd;
  text-shadow: 0 0 30px rgba(96,165,250,0.5), 0 0 60px rgba(96,165,250,0.2);
}

.b2f-statement {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  line-height: 1.6;
  color: #93c5fd;
  font-weight: 500;
  letter-spacing: -0.3px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(96,165,250,0.15);
  margin-bottom: 4px;
}

.b2f-right {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-left: 40px;
}

.b2f-bottom {
  margin-top: 56px;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.6;
  color: #ffffff;
  font-weight: 400;
  text-align: left;
  text-shadow: 0 0 20px rgba(255,255,255,0.3), 0 0 40px rgba(255,255,255,0.1);
  padding-top: 0;
}

.b2f-bottom-mobile {
  display: none;
}

.urban-intel-split {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: center;
}

.ui-big {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -2px;
  white-space: nowrap;
}

.ui-big .d1 { color: rgba(255, 255, 255, 0.75); }
.ui-big .d2 { color: rgba(255, 255, 255, 0.75); }

.ui-accent {
  color: #93c5fd;
  text-shadow: 0 0 20px rgba(96, 165, 250, 0.6);
}

.ui-accent-alt {
  color: #67e8f9;
  text-shadow: 0 0 20px rgba(103, 232, 249, 0.5);
}

.ui-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ui-line {
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  line-height: 1.8;
  color: #cbd5e1;
  font-weight: 400;
  padding-left: 16px;
  border-left: 2px solid rgba(255, 255, 255, 0.25);
}

.ui-line.highlight {
  color: #ffffff;
  border-left-color: #93c5fd;
}

.ui-line-nowrap {
  white-space: nowrap;
}

.ui-big-sub {
  font-size: clamp(1.4rem, 2.8vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -1px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Core Research Themes (Block 4) ===== */
.research-themes-content {
  max-width: 900px;
  width: 100%;
  text-align: left;
}

.themes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  text-align: left;
}

.theme-card {
  display: block;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  padding: 28px;
  text-decoration: none;
  color: inherit;
  transition: background 0.25s, transform 0.25s, border-color 0.25s;
}

.theme-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
}

.theme-header {
  margin-bottom: 14px;
}

.theme-badge {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.25);
  margin-bottom: 8px;
}

.theme-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.theme-subtitle {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.35);
  font-weight: 400;
}

.theme-desc {
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 16px;
}

.theme-pipeline {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
}

.theme-pipeline span {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 4px 10px;
}

.pipe-arr {
  background: none !important;
  border: none !important;
  color: rgba(255, 255, 255, 0.2) !important;
  padding: 0 !important;
  font-size: 0.8rem !important;
}

.theme-projects {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.proj-chip {
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 20px;
  padding: 4px 10px;
}

.proj-chip.real {
  background: rgba(147, 197, 253, 0.1);
  border: 1px solid rgba(147, 197, 253, 0.22);
  color: #93c5fd;
}

.proj-chip.dummy {
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.2);
}

.theme-arrow {
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.25);
  transition: color 0.2s;
}

.theme-card:hover .theme-arrow {
  color: rgba(255, 255, 255, 0.7);
}

/* ===== Research Themes layout (Block 4) ===== */
.themes-intro-block {
  margin-bottom: 28px;
  text-align: left;
}

.themes-intro {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  font-weight: 600;
  color: #ffffff;
  line-height: 1.65;
  margin-bottom: 6px;
}

.themes-intro-sub {
  font-size: clamp(0.8rem, 1vw, 0.88rem);
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.6;
}

.theme-row-desc {
  font-size: 0.82rem;
  line-height: 1.7;
  color: #fff;
  margin-bottom: 12px;
}

.theme-row-desc strong {
  color: #93c5fd;
}

.theme-row-pipeline {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
}

.theme-row-pipeline span {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 5px 10px;
  white-space: nowrap;
}

.theme-row-pipeline .pipe-arr {
  background: none !important;
  border: none !important;
  color: rgba(255, 255, 255, 0.3) !important;
  padding: 0 !important;
  font-size: 0.9rem !important;
}

.theme-row-chips {
  margin-top: 8px;
}

.see-projects-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: border-color 0.2s, color 0.2s;
}

.see-projects-btn:hover {
  border-color: rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.7);
}

.see-projects-sub {
  color: rgba(255, 255, 255, 0.25);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.see-projects-arrow {
  transition: transform 0.2s;
  display: inline-block;
}

.see-projects-btn.open .see-projects-arrow {
  transform: rotate(90deg);
}

.see-projects-list {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.see-projects-list.visible {
  display: flex;
}

.themes-rows {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  row-gap: 12px;
  width: 100%;
  max-width: 860px;
  background: transparent;
  border-radius: 14px;
  overflow: hidden;
}

.theme-row {
  display: contents;
}

.theme-row-left,
.theme-row-right {
  background: rgba(255, 255, 255, 0.25);
  transition: background 0.2s, opacity 0.65s ease, transform 0.65s ease;
}

.theme-row-1-left,
.theme-row-1-right {
  opacity: 0;
  transform: translateX(-40px);
}

.theme-row-2-left,
.theme-row-2-right {
  opacity: 0;
  transform: translateX(40px);
}

.theme-row-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 28px 20px 28px 32px;
}

.theme-row-right {
  padding: 28px 32px 28px 20px;
}

.theme-row:hover .theme-row-left,
.theme-row:hover .theme-row-right {
  background: rgba(255, 255, 255, 0.07);
}

.theme-row-badge {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #93c5fd;
  text-shadow: 0 0 12px rgba(96,165,250,0.6), 0 0 24px rgba(96,165,250,0.3);
}

.theme-row-name {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 800;
  color: #93c5fd;
  letter-spacing: -1px;
  text-decoration: none;
  text-shadow: 0 0 20px rgba(96, 165, 250, 0.6);
  transition: color 0.2s, text-shadow 0.2s;
}

.theme-row-name:hover {
  color: #ffffff;
  text-shadow: none;
}

.theme-row-sub {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.4;
}

.theme-visual {
  width: 100%;
  height: 56px;
  margin-top: 16px;
  overflow: hidden;
  display: block;
}

/* ECG — light travels along line */
.ecg-visual {
  overflow: visible;
}

.ecg-base {
  fill: none;
  stroke: rgba(147, 197, 253, 0.2);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ecg-bright {
  fill: none;
  stroke: rgba(147, 197, 253, 0.9);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ecg-glow-rect {
  x: -60;
}

.theme-row-1-left.anim-in .ecg-glow-rect {
  animation: ecgLight 2.4s ease-in-out infinite;
}

@keyframes ecgLight {
  0%   { x: -60; }
  100% { x: 260; }
}

/* CityFWD — spinning wheel */
.fwd-road-base {
  fill: none;
  stroke: rgba(147, 197, 253, 0.2);
  stroke-width: 1.5;
  stroke-linecap: round;
}
.fwd-road-bright-rect {
  fill: rgba(147, 197, 253, 0.9);
}
.fwd-road-glow-rect {
  x: -60;
}
.theme-row-2-left.anim-in .fwd-road-glow-rect {
  animation: fwdRoadLight 2.4s ease-in-out infinite;
}
@keyframes fwdRoadLight {
  0%   { x: -60; }
  100% { x: 260; }
}
.fwd-tyre-ring {
  fill: none;
  stroke: rgba(147, 197, 253, 0.3);
  stroke-width: 1.4;
}
.fwd-tyre-inner-line {
  fill: none;
  stroke: rgba(147, 197, 253, 0.14);
  stroke-width: 1;
}
.fwd-spoke5 {
  stroke: rgba(147, 197, 253, 0.28);
  stroke-width: 1.1;
  stroke-linecap: round;
}
.fwd-wheel-hub {
  fill: rgba(147, 197, 253, 0.4);
  stroke: none;
}

.theme-row-2-left.anim-in .fwd-wheel-spin {
  animation: wheelSpin 4s linear infinite;
  transform-origin: 0px 0px;
}
@keyframes wheelSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.theme-row-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
}

.tree-leaf {
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 20px;
  padding: 4px 14px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.tree-leaf.real {
  background: rgba(147, 197, 253, 0.1);
  border: 1px solid rgba(147, 197, 253, 0.22);
  color: #93c5fd;
}

.tree-leaf.dummy {
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.2);
}

.tree-leaf:hover {
  opacity: 0.75;
}

/* ===== Stats wrap (Block 5) ===== */
.stats-wrap {
  text-align: center;
}

.stats-headline {
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin-bottom: 40px;
  letter-spacing: -0.2px;
}

/* ===== Types Grid (Stats - Block 3) ===== */
.types-grid {
  display: grid;
  grid-template-columns: repeat(6, auto);
  gap: 8px;
  justify-content: center;
}

.types-grid .cell {
  padding: 0;
  opacity: 0.95;
}

.types-grid .types-cell {
  margin: 0.25rem;
  border-radius: 14px;
  width: auto;
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 2rem;
  cursor: pointer;
  box-shadow: none;
}

.types-grid .types-cell h1,
.types-grid .types-cell .h1 {
  text-shadow: none;
  line-height: 0.8;
  font-weight: 700;
  color: #93c5fd;
  font-size: 2.25rem;
  margin-bottom: 0.25rem;
}

.types-grid .types-cell h4,
.types-grid .types-cell .h4 {
  text-transform: uppercase;
  font-weight: 600;
  color: #fff;
  font-size: 0.8rem;
  margin: 0;
  letter-spacing: 0.08em;
}

.types-grid .types-cell .type-icon {
  margin-bottom: 0.75rem;
}

.types-grid .types-cell:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.types-grid .types-cell:hover h1,
.types-grid .types-cell:hover .h1,
.types-grid .types-cell:hover h4,
.types-grid .types-cell:hover .h4 {
  color: #ffffff;
}

/* ===== About Section ===== */
.about-content {
  max-width: 600px;
  text-align: center;
}

.about-content h2 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--uaii-fg);
  text-shadow: none;
}

.about-content p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--uaii-muted);
}

/* ===== Scroll Height Button ===== */
a.scroll-height {
  display: none;
}

.scroll-nav-btns {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

#scroll-up {
  top: calc(var(--nav-header-height) + 12px);
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
}

#scroll-down {
  bottom: calc(var(--nav-footer-height) + 8px);
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
}

.scroll-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.3);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s, opacity 0.3s;
}

.scroll-btn:hover {
  color: rgba(255, 255, 255, 0.7);
}

.rotate-180 {
  transform: rotate(180deg);
}

/* ===== Footer ===== */
.home-footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  height: var(--nav-footer-height);
  background: rgba(252, 252, 252, 0.92);
  border-top: 1px solid #e2e5eb;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 40px;
}

.home-footer span {
  font-size: 12px;
  color: #9ca3af;
}

/* ===== Community Page ===== */
body.community {
  background: #2d3a4a;
  color: #fff;
}

.section.p-0 {
  padding: 0;
}

#map-widget {
  padding-top: var(--nav-header-height);
}

#fcl-map-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 24 / 9;
  min-height: 300px;
}

#fcl-map {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

#fcl-map-sidebar {
  position: absolute;
  display: block;
  top: 0;
  bottom: 0;
  left: 0;
  width: 400px;
  max-width: calc(100vw - 40px);
  transition-property: left;
  transition-duration: 1s;
  z-index: 9;
  height: 100%;
  overflow-y: scroll;
  background: var(--bs-secondary);
  padding: 1rem;
  color: #fff;
}

#fcl-map-sidebar.tucked {
  left: -400px;
  display: none;
}

#fcl-map-sidebar-close-button {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

#fcl-map-sidebar-close-button:hover {
  color: #fff;
}

#fcl-map-sidebar h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  padding-right: 30px;
}

#fcl-map-sidebar .sidebar-meta {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 0.25rem;
}

#fcl-map-sidebar .sidebar-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin: 1rem 0;
}

#fcl-map-sidebar .sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1rem;
}

#fcl-map-sidebar .sidebar-tags span {
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

#fcl-map-sidebar .sidebar-link {
  display: inline-block;
  padding: 8px 16px;
  background: var(--uaii-accent);
  color: #fff;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s;
}

#fcl-map-sidebar .sidebar-link:hover {
  background: var(--uaii-brand);
}

/* Cluster sidebar items */
.sidebar-cluster-item {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
  margin-top: 1rem;
}

.sidebar-cluster-item:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0.5rem;
}

.sidebar-cluster-name {
  font-size: 1rem;
}

.map-hint {
  font-size: 0.8rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  padding: 0.5rem 0;
  margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }

  .hero-uaii {
    white-space: normal;
    font-size: clamp(2.2rem, 7vw, 3.5rem);
    margin-bottom: 32px;
  }

  .b2f-word {
    font-size: clamp(2.2rem, 7vw, 3.5rem) !important;
  }

  .b3-title {
    font-size: clamp(2.2rem, 7vw, 3.5rem) !important;
  }

  .hero-content {
    padding: 0 8px;
  }

  .mission-content p {
    font-size: 0.95rem;
  }

  /* Stats: 3 columns on tablet */
  .types-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
    width: 100% !important;
  }

  .types-grid .types-cell {
    padding: 0.7rem 0.8rem;
  }

  .types-grid .types-cell h1,
  .types-grid .types-cell .h1 {
    font-size: 1.5rem;
  }

  .types-grid .types-cell h4,
  .types-grid .types-cell .h4 {
    font-size: 0.6rem;
  }

  .submenu.bg-secondary {
    padding: 0 20px;
  }

  .scroll-block {
    padding: 40px 16px;
  }

  /* Block 2: stack columns */
  .b2f-layout {
    grid-template-columns: 1fr;
    gap: 28px 0;
  }

  .b2f-right {
    padding-left: 0;
  }

  .urban-intel-content {
    display: flex;
    flex-direction: column;
  }

  .b2f-bottom-desktop {
    display: none;
  }

  .b2f-bottom-mobile {
    display: block;
    margin-top: 20px;
    margin-bottom: 0;
  }

  .b2f-bottom {
    margin-top: 32px;
    font-size: 0.9rem;
  }

  .ui-line {
    font-size: 0.88rem;
    padding-left: 12px;
  }

  .urban-intel-content {
    padding: 0 16px;
  }

  /* Block 3: stack theme cards */
  .b4v2-cols {
    flex-direction: column;
  }

  .b3-cards {
    flex-direction: column;
    gap: 16px;
  }

  .b3-card {
    padding: 32px 20px;
  }

  .b3-title {
    margin-bottom: 32px;
  }

  .b3-card-name {
    font-size: clamp(1.4rem, 5vw, 2rem);
    margin-bottom: 24px;
  }

  /* Arrow steps: smaller on mobile */
  .b3-arrow-steps {
    flex-wrap: wrap;
    justify-content: center;
    gap: 3px;
  }

  .b3-arrow-step {
    font-size: 0.65rem;
    padding: 5px 10px 5px 16px;
  }

  .b3-arrow-step:first-child {
    padding-left: 10px;
  }

  /* Pipeline pills: smaller */
  .b3-step {
    font-size: 0.7rem;
    padding: 5px 10px;
  }

  .theme-row-pipeline {
    flex-wrap: wrap !important;
    justify-content: center !important;
  }

  .theme-row-pipeline span {
    font-size: 0.65rem;
    padding: 3px 6px;
  }

  /* ECG/road line */
  .b3-card-name-wrap .ecg-visual {
    height: 30px;
  }

  /* Theme rows (projects page) */
  .themes-rows {
    grid-template-columns: 1fr;
  }

  #fcl-map-wrap {
    aspect-ratio: 1 / 1;
  }

  #fcl-map-sidebar {
    width: 100vw;
    max-width: 100vw;
  }
}

@media (max-width: 480px) {
  .scroll-block {
    padding: 24px 12px;
  }

  .hero-uaii {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    margin-bottom: 24px;
  }

  .b2f-word {
    font-size: clamp(1.8rem, 6vw, 2.5rem) !important;
  }

  .b3-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem) !important;
  }

  /* Stats: 2 columns on phone */
  .types-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 5px !important;
  }

  .types-grid .types-cell {
    padding: 0.5rem 0.6rem;
  }

  .types-grid .types-cell h1,
  .types-grid .types-cell .h1 {
    font-size: 1.2rem;
  }

  .types-grid .types-cell h4,
  .types-grid .types-cell .h4 {
    font-size: 0.55rem;
  }


  .b2f-prep {
    font-size: 0.75rem;
  }

  .b2f-bottom {
    font-size: 0.82rem;
    margin-top: 24px;
  }

  .ui-line {
    font-size: 0.8rem;
    gap: 16px;
  }

  .b3-card {
    padding: 24px 16px;
  }

  .b3-title {
    margin-bottom: 24px;
  }

  .b3-card-name {
    font-size: 1.3rem;
    margin-bottom: 20px;
  }

  .b3-arrow-step {
    font-size: 0.58rem;
    padding: 4px 8px 4px 14px;
  }

  .b3-step {
    font-size: 0.62rem;
    padding: 4px 8px;
  }

  .b4v2-card-inner {
    padding: 16px;
  }

  .b4v2-top {
    flex-direction: column;
  }

  .b4v2-visual-wrap {
    width: 100%;
  }
}

/* ===== Hero v1_1 ===== */

.h11-block {
  justify-content: center;
  align-items: flex-start;
  text-align: left;
  padding: 0 8vw;
  flex-direction: column;
}

.h11-eyebrow {
  position: absolute !important;
  top: 52px;
  left: 8vw;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.22em !important;
  color: rgba(255,255,255,0.5) !important;
  margin: 0 !important;
}

.h11-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 900px;
}

.h11-uaii {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.65rem, 0.9vw, 0.8rem) !important;
  font-weight: 800 !important;
  letter-spacing: 0.35em !important;
  text-transform: uppercase !important;
  color: #60a5fa !important;
  text-align: left !important;
  text-shadow: none !important;
  margin: 0 !important;
}

.h11-headline {
  font-family: 'Cormorant Garamond', Georgia, serif !important;
  font-size: clamp(3rem, 7vw, 6.8rem) !important;
  font-weight: 300 !important;
  color: #ffffff !important;
  line-height: 1.08 !important;
  letter-spacing: -0.01em !important;
  margin: 0 !important;
  white-space: normal !important;
  text-align: left !important;
  display: block !important;
  text-shadow: 0 2px 40px rgba(0,0,0,0.6) !important;
}

.h11-headline em {
  font-style: italic;
  font-weight: 300;
  color: #93c5fd;
}

.h11-mission {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.9rem, 1.3vw, 1.05rem) !important;
  font-weight: 400 !important;
  color: rgba(255,255,255,0.72) !important;
  line-height: 1.72 !important;
  letter-spacing: 0.005em !important;
  margin: 0 !important;
  max-width: 580px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* ===== Hero v1_2 — Libre Baskerville ===== */

.h12-block {
  justify-content: center;
  align-items: flex-start;
  text-align: left;
  padding: 0 8vw;
  flex-direction: column;
}

.h12-eyebrow {
  position: absolute !important;
  top: 52px;
  left: 8vw;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.22em !important;
  color: rgba(255,255,255,0.5) !important;
  margin: 0 !important;
}

.h12-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 860px;
}

.h12-uaii {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.65rem, 0.9vw, 0.8rem) !important;
  font-weight: 800 !important;
  letter-spacing: 0.35em !important;
  text-transform: uppercase !important;
  color: #60a5fa !important;
  text-align: left !important;
  text-shadow: none !important;
  margin: 0 !important;
}

.h12-headline {
  font-family: 'Libre Baskerville', Georgia, serif !important;
  font-size: clamp(2.2rem, 5vw, 5rem) !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  line-height: 1.18 !important;
  letter-spacing: -0.01em !important;
  margin: 0 !important;
  white-space: normal !important;
  text-align: left !important;
  display: block !important;
  text-shadow: 0 2px 40px rgba(0,0,0,0.6) !important;
}

.h12-headline em {
  font-style: italic;
  color: #93c5fd;
}

.h12-mission {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.9rem, 1.3vw, 1.05rem) !important;
  font-weight: 400 !important;
  color: rgba(255,255,255,0.72) !important;
  line-height: 1.72 !important;
  letter-spacing: 0.005em !important;
  margin: 0 !important;
  max-width: 580px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* ===== Hero v1_3 — Bebas Neue ===== */

.h13-block {
  justify-content: center;
  align-items: flex-start;
  text-align: left;
  padding: 0 8vw;
  flex-direction: column;
}

.h13-eyebrow {
  position: absolute !important;
  top: 52px;
  left: 8vw;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.22em !important;
  color: rgba(255,255,255,0.5) !important;
  margin: 0 !important;
}

.h13-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1000px;
}

.h13-uaii {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.65rem, 0.9vw, 0.8rem) !important;
  font-weight: 800 !important;
  letter-spacing: 0.35em !important;
  text-transform: uppercase !important;
  color: #60a5fa !important;
  text-align: left !important;
  text-shadow: none !important;
  margin: 0 !important;
}

.h13-headline {
  font-family: 'Bebas Neue', Impact, sans-serif !important;
  font-size: clamp(4rem, 9.5vw, 9rem) !important;
  font-weight: 400 !important;
  color: #ffffff !important;
  line-height: 0.95 !important;
  letter-spacing: 0.04em !important;
  margin: 0 !important;
  white-space: normal !important;
  text-align: left !important;
  display: block !important;
  text-transform: uppercase !important;
  text-shadow: 0 0 80px rgba(96,165,250,0.25), 0 2px 40px rgba(0,0,0,0.7) !important;
}

.h13-mission {
  font-family: 'Inter', sans-serif !important;
  font-size: clamp(0.9rem, 1.3vw, 1.05rem) !important;
  font-weight: 400 !important;
  color: rgba(255,255,255,0.72) !important;
  line-height: 1.72 !important;
  letter-spacing: 0.005em !important;
  margin: 0 !important;
  max-width: 580px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

/* ===== Block 3 v2 — Sense / Learn / Act ===== */

.b3v2-wrap {
  max-width: 1100px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.b3v2-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.b3v2-statement {
  font-size: clamp(1.5rem, 3vw, 2.6rem) !important;
  font-weight: 300 !important;
  color: #ffffff !important;
  line-height: 1.3 !important;
  letter-spacing: -0.02em !important;
  margin: 0 !important;
  text-align: left !important;
  display: block !important;
}

.b3v2-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.b3v2-pillar {
  padding: 32px 32px 32px 0;
  border-right: 1px solid rgba(255,255,255,0.08);
  border-left: none !important;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.b3v2-pillar:first-child {
  padding-left: 0;
}

.b3v2-pillar:last-child {
  border-right: none;
  padding-right: 0;
}

.b3v2-num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #60a5fa;
  font-family: 'Inter', sans-serif;
}

.b3v2-title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
}

.b3v2-desc {
  font-size: clamp(0.82rem, 1.1vw, 0.92rem);
  font-weight: 400;
  color: rgba(255,255,255,0.55);
  line-height: 1.75;
  margin: 0;
}

/* ===== Block 2b — vertical layout ===== */
.b2v-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.b2v-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 48px;
  text-align: center;
}

.b2v-line {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.b2v-top .b2f-word {
  line-height: 1.1;
}

.b2v-top .b2f-bottom {
  margin-top: 20px;
  text-align: center;
}

.b2v-bottom {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 800px;
  width: 100%;
  text-align: left;
}

/* ===== Block 3 title ===== */
.b3-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -1px;
  margin-bottom: 48px;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.25);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.b3-title.anim-in {
  opacity: 1 !important;
  transform: translate(0, 0) !important;
}

.b3-content {
  display: flex;
  flex-direction: column;
  max-width: 1400px;
  width: 100%;
}

.b3-cards {
  display: flex;
  gap: 20px;
  width: 100%;
  align-items: stretch;
}

.b3-card {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 14px;
  padding: 56px 40px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.b3-card.anim-in {
  opacity: 1 !important;
  transform: translate(0, 0) !important;
}

.b3-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(96,165,250,0.25);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  transform: translateY(-4px) !important;
}

.b3-card-name {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: #93c5fd;
  letter-spacing: -0.5px;
  margin-bottom: 36px;
  display: block;
  text-align: center;
  text-shadow: 0 0 30px rgba(96,165,250,0.5), 0 0 60px rgba(96,165,250,0.2);
}

.b3-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.b3-step {
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(37,99,235,0.45);
  border: 1px solid rgba(37,99,235,0.6);
  border-radius: 20px;
  padding: 7px 16px;
  margin: 0;
  transition: all 0.2s ease;
}

.b3-step::after {
  content: none;
}

.b3-arr {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
}

.b3-card:hover .b3-step {
  background: rgba(96,165,250,0.35);
  border-color: rgba(96,165,250,0.5);
}

.b3-card:hover .b3-arr {
  color: rgba(255,255,255,0.6);
}

/* Style 3: JC vertical pipeline */
.b3-vert-pipeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.b3-vert-step {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  padding: 6px 0;
}
.b3-vert-arr {
  font-size: 0.75rem;
  color: rgba(147,197,253,0.4);
  transform: rotate(90deg);
  display: block;
  line-height: 1;
}

/* Style 1: Arrow steps — chevron tail shape */
.b3-arrow-steps {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-top: 4px;
}
.b3-arrow-step {
  font-size: 0.78rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(37,99,235,0.4);
  padding: 8px 20px 8px 28px;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%, 12px 50%);
}
.b3-arrow-step:first-child {
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%);
  padding-left: 16px;
  border-radius: 4px 0 0 4px;
}
.b3-arrow-step:last-child {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 12px 50%);
  border-radius: 0 4px 4px 0;
}
.b3-arrow-step:nth-child(odd) {
  background: rgba(37,99,235,0.45);
}
.b3-arrow-step:nth-child(even) {
  background: rgba(37,99,235,0.3);
}



/* Card name wrapper with SVG pass-through */
.b3-card {
  position: relative;
}

.b3-card-name-wrap {
  position: relative;
  text-align: center;
  margin-bottom: 36px;
}

.b3-card-name-wrap .b3-card-name {
  margin-bottom: 0;
}

/* ECG line — underlines Dr.City text, baseline aligned with road line */
.b3-card-name-wrap .ecg-visual {
  position: absolute;
  left: 0;
  bottom: -16px;
  width: 100%;
  height: 40px;
  pointer-events: none;
}

/* Road line — underlines CityFWD.ai text */
.b3-road-line {
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 4px;
  pointer-events: none;
}

/* Wheel — right end, sitting on road line */
.b3-wheel {
  position: absolute;
  right: 8%;
  bottom: 4px;
  width: 36px;
  height: 36px;
  pointer-events: none;
}

.b3-card:hover .b3-card-name {
  color: #ffffff;
  text-shadow: 0 0 30px rgba(255,255,255,0.4);
}

/* ECG/wheel animation triggers for b3-card */
.b3-card.anim-in .ecg-glow-rect { animation: b3EcgLight 2.4s ease-in-out infinite; }
.b3-card.anim-in .fwd-wheel-spin { animation: wheelSpin 4s linear infinite; transform-origin: 0px 0px; }
.b3-card.anim-in .b3-wheel { animation: wheelPulse 2.4s ease-in-out infinite; }

@keyframes wheelPulse {
  0%   { opacity: 0.5; filter: brightness(1); }
  55%  { opacity: 0.5; filter: brightness(1); }
  65%  { opacity: 1;   filter: brightness(1.8) drop-shadow(0 0 6px rgba(147,197,253,0.8)); }
  75%  { opacity: 0.5; filter: brightness(1); }
  100% { opacity: 0.5; filter: brightness(1); }
}
.b3-card.anim-in .b3-road-line .fwd-road-glow-rect { animation: b3RoadLight 2.4s ease-in-out infinite; }

@keyframes b3EcgLight {
  0%   { x: -90; }
  100% { x: 300; }
}

@keyframes b3RoadLight {
  0%   { x: -120; }
  100% { x: 400; }
}

/* ===== Block 4 v2 — side by side ===== */

.b4v2-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1200px;
  width: 100%;
}

.b4v2-cols {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 16px;
  width: 100%;
}

.b4v2-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 14px;
  overflow: hidden;
}

.b4v2-card-inner {
  display: flex;
  flex-direction: column;
  padding: 36px;
  gap: 24px;
  flex: 1;
}

.b4v2-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.b4v2-top {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.b4v2-top-labels {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.b4v2-visual-wrap {
  flex-shrink: 0;
  width: 180px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  opacity: 0.85;
}

.b4v2-visual-wrap .theme-visual {
  width: 100%;
  height: auto;
}

.b4v2-divider {
  display: none;
}

.b4v2-bottom {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  justify-content: space-between;
}

/* b4v2 link card styles */
a.b4v2-card {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
a.b4v2-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(96,165,250,0.3);
  transform: translateY(-4px);
  box-shadow: 0 0 20px rgba(96,165,250,0.15);
}

/* ECG/wheel animations trigger on b4v2-card.anim-in */
.b4v2-card.anim-in .ecg-glow-rect { animation: ecgLight 2.4s ease-in-out infinite; }
.b4v2-card.anim-in .fwd-road-glow-rect { animation: fwdRoadLight 2.4s ease-in-out infinite; }
.b4v2-card.anim-in .fwd-wheel-spin { animation: wheelSpin 4s linear infinite; transform-origin: 0px 0px; }

/* ===== Block 4 v3 — left intro + right stacked themes ===== */

.b4v3-wrap {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  max-width: 1100px;
  width: 100%;
  height: 100%;
}

.b4v3-left {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-right: 40px;
  border-right: 1px solid rgba(255,255,255,0.1);
  justify-content: center;
}

.b4v3-statement {
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  font-weight: 500;
  color: #ffffff;
  line-height: 1.6;
  margin: 0;
}

.b4v3-sub {
  font-size: clamp(0.8rem, 1vw, 0.88rem);
  font-weight: 400;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin: 0;
}

.b4v3-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 40px;
}

.b4v3-theme {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 0;
}

.b4v3-theme:first-child {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.b4v3-theme-head {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.b4v3-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.b4v3-svg-wrap {
  width: 160px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  opacity: 0.85;
}

.b4v3-svg-wrap .theme-visual {
  width: 100%;
  height: auto;
}

.b4v3-theme-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}