/* ===================================================
   Shinji Kanai — AI Work Research
   Standalone stylesheet v2 (no imports from main.css)
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── CSS Variables ──────────────────────────────── */
:root {
  --bg-base:        #050810;
  --bg-deep:        #030609;
  --bg-card:        rgba(255,255,255,0.03);
  --bg-card-hover:  rgba(255,255,255,0.055);
  --border:         rgba(255,255,255,0.07);
  --border-bright:  rgba(100,160,255,0.25);
  --text-primary:   #e8edf5;
  --text-secondary: #8a96b0;
  --text-muted:     #4a5568;
  --accent-blue:    #3b82f6;
  --accent-violet:  #8b5cf6;
  --accent-cyan:    #06b6d4;
  --accent-green:   #10b981;
  --accent-amber:   #f59e0b;
  --glow-blue:      rgba(59,130,246,0.4);
  --glow-violet:    rgba(139,92,246,0.35);
  --glow-cyan:      rgba(6,182,212,0.3);
  --font-display:   'Syne', sans-serif;
  --font-body:      'DM Sans', sans-serif;
  --radius:         12px;
  --radius-lg:      18px;
  --max-w:          1200px;
  --transition:     0.25s cubic-bezier(0.4,0,0.2,1);
  --section-padding: 120px;
}

/* ── Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Background Canvas ──────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.page-wrapper {
  position: relative;
  z-index: 1;
}

/* ── Container ──────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Fade-in (required by app.js IntersectionObserver) */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Navigation ─────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(5,8,16,0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

/* ── Buttons ────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 26px;
  border-radius: 100px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(59,130,246,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 11px 22px;
  border-radius: 100px;
  border: 1px solid var(--border);
  text-decoration: none;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
}
.btn-secondary:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
  box-shadow: 0 4px 20px rgba(59,130,246,0.1);
}

.btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(139,92,246,0.15));
  border: 1px solid rgba(99,179,237,0.25);
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 0.82rem;
  color: var(--accent-blue);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition);
}
.btn-sm:hover {
  background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(139,92,246,0.25));
  box-shadow: 0 4px 16px rgba(59,130,246,0.15);
}

/* ── Section Utilities ──────────────────────────── */
section { padding: var(--section-padding) 0; }

.section-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.section-header {
  margin-bottom: 56px;
}

/* ── Hero ───────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1000px;
  height: 700px;
  background: radial-gradient(ellipse at center, rgba(59,130,246,0.07) 0%, rgba(139,92,246,0.05) 40%, transparent 70%);
  pointer-events: none;
}

/* Two-column hero grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: center;
}

.hero-left { min-width: 0; }

.hero-right { display: flex; align-items: center; }

/* ── Personal Research Card ──────────────────────── */
.hero-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  width: 100%;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,179,237,0.4), transparent);
}

.hero-card-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(139,92,246,0.25));
  border: 1px solid rgba(99,179,237,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}

.hero-card-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 10px;
}

.hero-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.45;
}

.hero-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  font-weight: 300;
}

.hero-card-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-card-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--text-secondary);
}

.bullet-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero-eyebrow-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 6px var(--glow-blue);
  animation: pulse-dot 2.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.65); }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
  max-width: 600px;
  margin-bottom: 44px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Premise Section ────────────────────────────── */
.premise-section { padding: 80px 0 var(--section-padding); }

.premise-block {
  max-width: 680px;
  border-left: 3px solid var(--accent-blue);
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.premise-block p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}

/* ── Questions Section ──────────────────────────── */
.questions-section { padding: var(--section-padding) 0; }

.questions-intro {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin-bottom: 52px;
  line-height: 1.75;
  font-weight: 300;
}

.questions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.q-card-v2 {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.q-card-v2:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: rgba(100,160,255,0.2);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 28px rgba(59,130,246,0.06);
}

.q-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-muted);
  opacity: 0.35;
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}

.q-title {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.45;
}

.q-body {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.65;
  font-weight: 300;
}

/* ── Graph Section ──────────────────────────────── */
.graph-section { padding: var(--section-padding) 0; }

.graph-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

.graph-canvas-wrap {
  background:
    radial-gradient(circle at 22% 18%, rgba(59,130,246,0.18), transparent 28%),
    radial-gradient(circle at 80% 76%, rgba(16,185,129,0.12), transparent 30%),
    linear-gradient(145deg, rgba(15,23,42,0.88), rgba(6,12,28,0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.graph-canvas-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 0%, transparent 74%);
  pointer-events: none;
}

.graph-toolbar {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid rgba(148,163,184,0.16);
  border-radius: 999px;
  background: rgba(2,6,23,0.58);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.22);
}

.graph-tool-btn {
  min-width: 34px;
  height: 34px;
  border: 1px solid rgba(96,165,250,0.22);
  border-radius: 999px;
  background: rgba(15,23,42,0.72);
  color: rgba(219,234,254,0.95);
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.graph-tool-btn:hover,
.graph-tool-btn:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(96,165,250,0.55);
  background: rgba(59,130,246,0.22);
  color: #fff;
  outline: none;
}

.graph-tool-reset {
  min-width: 58px;
  padding: 0 12px;
  font-size: 0.74rem;
}

.graph-tool-toggle {
  min-width: 72px;
  padding: 0 12px;
  font-size: 0.72rem;
}

.graph-tool-btn[aria-pressed="true"] {
  border-color: rgba(16,185,129,0.48);
  background: rgba(16,185,129,0.16);
  color: #ecfdf5;
}

.graph-container.graph-expanded {
  position: fixed;
  inset: 18px;
  z-index: 80;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  align-items: stretch;
  padding: 18px;
  border: 1px solid rgba(96,165,250,0.24);
  border-radius: 24px;
  background: rgba(2,6,23,0.96);
  box-shadow: 0 30px 90px rgba(0,0,0,0.6);
  backdrop-filter: blur(18px);
}

body.graph-expanded-active {
  overflow: hidden;
}

.graph-container.graph-expanded .graph-canvas-wrap {
  min-height: calc(100vh - 72px);
}

.graph-container.graph-expanded #graph-svg {
  max-width: none;
  height: calc(100vh - 96px);
}

.graph-container.graph-expanded .graph-detail-panel {
  max-height: calc(100vh - 72px);
  overflow: auto;
}

.graph-canvas-wrap.graph-node-labels-hidden .node-code-label,
.graph-canvas-wrap.graph-node-labels-hidden .node-title-label,
.graph-canvas-wrap.graph-node-labels-hidden #graph-tooltip,
.graph-canvas-wrap.graph-relation-labels-hidden .graph-edge-label {
  display: none;
}

.graph-interaction-hint {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  max-width: calc(100% - 36px);
  padding: 7px 10px;
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: 999px;
  background: rgba(2,6,23,0.52);
  color: rgba(191,219,254,0.62);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  backdrop-filter: blur(12px);
  pointer-events: none;
}

#graph-svg {
  width: 100%;
  max-width: 620px;
  height: 620px;
  position: relative;
  z-index: 1;
  cursor: grab;
  touch-action: none;
  filter: drop-shadow(0 22px 38px rgba(15,23,42,0.42));
}

#graph-svg.is-panning {
  cursor: grabbing;
}

.graph-node {
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.graph-node.is-dragging {
  cursor: grabbing;
}

.graph-node.is-dragging .node-circle {
  filter: url(#glow-blue);
}

.graph-edge-underlay {
  stroke: rgba(15,23,42,0.86);
  stroke-linecap: round;
  opacity: 0.82;
  pointer-events: none;
}

.graph-edge {
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: opacity 0.2s ease, stroke-width 0.2s ease, stroke 0.2s ease;
  filter: drop-shadow(0 0 5px rgba(125,211,252,0.22));
}


.graph-edge-label {
  fill: rgba(253,230,138,0.92);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-anchor: middle;
  text-transform: uppercase;
  paint-order: stroke;
  stroke: rgba(15,23,42,0.92);
  stroke-width: 3px;
  pointer-events: none;
}

.edge-pulse {
  stroke: rgba(125,211,252,0.76);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 2 18;
  opacity: 0.36;
  pointer-events: none;
  animation: graph-edge-flow 3.2s linear infinite;
}

.edge-pulse-active {
  opacity: 0.78;
  stroke: rgba(196,181,253,0.86);
}

.energy-halo,
.glow-ring {
  transform-origin: center;
  animation: graph-node-breathe 4.6s ease-in-out infinite;
  pointer-events: none;
}

.evidence-dot {
  animation: graph-dot-twinkle 2.8s ease-in-out infinite alternate;
}

@keyframes graph-edge-flow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -40; }
}

@keyframes graph-node-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

@keyframes graph-dot-twinkle {
  from { opacity: 0.35; }
  to { opacity: 0.8; }
}

.graph-detail-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.panel-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(6,182,212,0.6);
}

.panel-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.panel-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition);
}
.panel-close:hover { color: var(--text-primary); border-color: var(--border-bright); }

.panel-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.panel-themes {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.panel-theme-tag {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--accent-cyan);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.2);
  border-radius: 100px;
  padding: 2px 8px;
}

.panel-evidence {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.panel-id-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.panel-id-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-shrink: 0;
}

.panel-node-id {
  font-size: 0.72rem;
  font-family: 'Courier New', monospace;
  color: var(--accent-cyan);
  background: rgba(6,182,212,0.08);
  border: 1px solid rgba(6,182,212,0.18);
  border-radius: 4px;
  padding: 1px 7px;
}

.panel-graph-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 18px;
}

.panel-graph-action {
  min-height: 32px;
  border: 1px solid rgba(96,165,250,0.18);
  border-radius: 8px;
  background: rgba(59,130,246,0.08);
  color: rgba(219,234,254,0.9);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.panel-graph-action:hover:not(:disabled),
.panel-graph-action:focus-visible:not(:disabled) {
  border-color: rgba(96,165,250,0.48);
  background: rgba(59,130,246,0.18);
  color: #fff;
  outline: none;
}

.panel-graph-action:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.panel-graph-action-secondary {
  border-color: rgba(16,185,129,0.18);
  background: rgba(16,185,129,0.08);
}

.panel-summary-label,
.panel-notes-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.panel-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  font-weight: 300;
}

.panel-notes-label { margin-bottom: 12px; }

.panel-notes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.panel-notes li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.83rem;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.panel-notes li:hover {
  background: rgba(59,130,246,0.07);
  border-color: rgba(59,130,246,0.2);
}

.panel-note-title { color: var(--text-secondary); }
.panel-note-date { color: var(--text-muted); font-size: 0.75rem; }

/* ── Conclusions Section ────────────────────────── */
.conclusions-section { padding: var(--section-padding) 0; }

.conclusions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.conclusion-card-v2 {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.conclusion-card-v2:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  border-color: rgba(100,160,255,0.14);
}

.conclusion-card-v2::before {
  content: '\201C';
  font-family: Georgia, serif;
  font-size: 6rem;
  line-height: 1;
  position: absolute;
  top: 12px;
  left: 24px;
  color: var(--accent-violet);
  opacity: 0.15;
  pointer-events: none;
}

.conclusion-text {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* ── Graph Conclusions (linked to selected question) */
.graph-conclusions {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  animation: fadeSlideUp 0.4s ease both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.graph-conclusions-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.graph-conclusions-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-violet);
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.25);
  border-radius: 6px;
  padding: 2px 8px;
}

.graph-conclusions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.graph-conclusion-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 28px 36px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

.graph-conclusion-card::before {
  content: '\201C';
  font-family: Georgia, serif;
  font-size: 4rem;
  line-height: 1;
  position: absolute;
  top: 8px;
  left: 16px;
  color: var(--accent-violet);
  opacity: 0.18;
  pointer-events: none;
}

.graph-conclusion-card:hover {
  transform: translateY(-3px);
  border-color: rgba(139,92,246,0.2);
}

.graph-conclusion-text {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* ── Graph Search / Filter / Export Row ─────────── */
.graph-search-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.graph-search-input {
  flex: 1;
  min-width: 160px;
  height: 36px;
  padding: 0 12px 0 36px;
  border: 1px solid rgba(96,165,250,0.22);
  border-radius: 999px;
  background: rgba(15,23,42,0.72) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' viewBox='0 0 24 24'%3E%3Ccircle cx='11' cy='11' r='8' stroke='%2360a5fa' stroke-opacity='.5' stroke-width='2'/%3E%3Cpath d='m21 21-4.35-4.35' stroke='%2360a5fa' stroke-opacity='.5' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat 12px center;
  color: rgba(219,234,254,0.95);
  font-family: var(--font-body);
  font-size: 0.82rem;
  transition: border-color 0.2s ease, background 0.2s ease;
  backdrop-filter: blur(14px);
}

.graph-search-input::placeholder { color: rgba(148,163,184,0.5); }
.graph-search-input::-webkit-search-cancel-button { cursor: pointer; opacity: 0.6; }

.graph-search-input:focus {
  outline: none;
  border-color: rgba(96,165,250,0.55);
  background-color: rgba(15,23,42,0.88);
}

.graph-tag-filter {
  height: 36px;
  padding: 0 28px 0 12px;
  border: 1px solid rgba(96,165,250,0.22);
  border-radius: 999px;
  background: rgba(15,23,42,0.72);
  color: rgba(219,234,254,0.9);
  font-family: var(--font-body);
  font-size: 0.82rem;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M6 9l6 6 6-6' stroke='%2360a5fa' stroke-opacity='.6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  backdrop-filter: blur(14px);
  transition: border-color 0.2s ease;
}

.graph-tag-filter:focus {
  outline: none;
  border-color: rgba(96,165,250,0.55);
}

.graph-tag-filter option {
  background: #0f172a;
  color: var(--text-primary);
}

.graph-export-btn {
  min-width: 100px;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

/* ── Node degree label (connection count) ────────── */
.node-degree-label {
  fill: rgba(255,255,255,0.88);
  font-size: 9.5px;
  font-weight: 700;
  font-family: 'DM Sans', sans-serif;
  pointer-events: none;
  text-anchor: middle;
  dominant-baseline: central;
  paint-order: stroke;
  stroke: rgba(5,8,23,0.72);
  stroke-width: 2.5px;
}

/* ── Panel Related Nodes ─────────────────────────── */
.panel-related-nodes-label,
.panel-links-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.panel-related-nodes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 18px;
}

.panel-related-node-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  background: rgba(96,165,250,0.06);
  border: 1px solid rgba(96,165,250,0.16);
  border-radius: 8px;
  padding: 7px 10px;
  color: rgba(147,197,253,0.9);
  font-family: var(--font-body);
  font-size: 0.78rem;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.panel-related-node-btn:hover,
.panel-related-node-btn:focus-visible {
  background: rgba(96,165,250,0.14);
  border-color: rgba(96,165,250,0.42);
  color: #fff;
  outline: none;
}

.panel-related-node-type {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(148,163,184,0.55);
  flex-shrink: 0;
}

.panel-related-node-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-related-node-arrow {
  font-size: 0.72rem;
  color: rgba(148,163,184,0.38);
  flex-shrink: 0;
}

/* ── Panel Links ─────────────────────────────────── */
.panel-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.panel-link-item {
  display: block;
}

.panel-link-anchor {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid rgba(52,211,153,0.2);
  border-radius: 8px;
  background: rgba(16,185,129,0.06);
  color: rgba(52,211,153,0.88);
  font-family: var(--font-body);
  font-size: 0.78rem;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  word-break: break-all;
}

.panel-link-anchor:hover,
.panel-link-anchor:focus-visible {
  background: rgba(16,185,129,0.14);
  border-color: rgba(52,211,153,0.45);
  color: #6ee7b7;
  outline: none;
}

.panel-link-icon {
  flex-shrink: 0;
  opacity: 0.7;
}

/* ── Panel expand button ─────────────────────────── */
.panel-graph-action-expand {
  border-color: rgba(96,165,250,0.3);
  color: rgba(147,197,253,0.95);
}
.panel-graph-action-expand:hover:not(:disabled),
.panel-graph-action-expand:focus-visible:not(:disabled) {
  border-color: rgba(96,165,250,0.65);
  background: rgba(59,130,246,0.18);
  color: #fff;
}
.panel-graph-action-path {
  border-color: rgba(167,139,250,0.3);
  color: rgba(196,181,253,0.95);
}
.panel-graph-action-path:hover:not(:disabled),
.panel-graph-action-path:focus-visible:not(:disabled) {
  border-color: rgba(167,139,250,0.65);
  background: rgba(124,58,237,0.18);
  color: #fff;
}

/* ── Connect Section ────────────────────────────── */
.connect-section {
  padding: var(--section-padding) 0 140px;
}

.connect-inner {
  max-width: 600px;
  text-align: center;
  margin: 0 auto;
}

.connect-headline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.connect-subtext {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 36px;
}

.connect-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Footer ─────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-icons {
  display: flex;
  gap: 16px;
  align-items: center;
}

.footer-icon-link {
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.footer-icon-link:hover { color: var(--text-secondary); }

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 900px) {
  :root { --section-padding: 80px; }

  .questions-grid { grid-template-columns: repeat(2, 1fr); }
  .conclusions-grid { grid-template-columns: repeat(2, 1fr); }
  .graph-container { grid-template-columns: 1fr; }
  .graph-container.graph-expanded {
    inset: 10px;
    grid-template-columns: 1fr;
    overflow: auto;
  }
  .graph-container.graph-expanded .graph-canvas-wrap { min-height: 70vh; }
  .graph-container.graph-expanded #graph-svg { height: 70vh; }
  .graph-container.graph-expanded .graph-detail-panel { max-height: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-right { display: none; }
  .tools-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  :root { --section-padding: 60px; }

  .nav-links { display: none; }
  .questions-grid { grid-template-columns: 1fr; }
  .conclusions-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .connect-actions { flex-direction: column; align-items: center; }
  .panel-graph-actions { grid-template-columns: 1fr; }
}

/* ── Tools Section ──────────────────────────────── */
.tools-section { padding: var(--section-padding) 0; }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: rgba(16,185,129,0.3);
  box-shadow: 0 8px 32px rgba(16,185,129,0.08);
}

.tool-card--more {
  border-style: dashed;
  border-color: rgba(255,255,255,0.1);
}

.tool-card--more:hover {
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 8px 32px rgba(59,130,246,0.07);
}

.tool-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.tool-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.tool-lang {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px 10px;
}

.tool-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.tool-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  font-weight: 300;
  flex: 1;
}

.tool-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  transition: color var(--transition);
}

.tool-link:hover { color: #67e8f9; }

/* ── Question card → graph focus interaction ──────── */

.q-card-v2[data-question-id] {
  cursor: pointer;
  position: relative;
}

.q-explore-hint {
  display: block;
  margin-top: 16px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease;
  pointer-events: none;
}

.q-card-v2[data-question-id]:hover .q-explore-hint {
  opacity: 1;
  transform: translateY(0);
  color: var(--accent-cyan);
}

.q-card-v2[data-question-id]:hover {
  border-color: rgba(6,182,212,0.3);
  box-shadow: 0 0 0 1px rgba(6,182,212,0.15), 0 8px 32px rgba(6,182,212,0.08);
}

/* Active / selected question card */
.q-card-v2.q-card-active {
  border-color: rgba(59,130,246,0.45) !important;
  background: rgba(59,130,246,0.07) !important;
  box-shadow: 0 0 0 1px rgba(59,130,246,0.2), 0 8px 32px rgba(59,130,246,0.12) !important;
}

.q-card-v2.q-card-active .q-number {
  opacity: 0.7;
  color: var(--accent-blue);
}

.q-card-v2.q-card-active .q-explore-hint {
  opacity: 1;
  transform: translateY(0);
  color: var(--accent-blue);
}

/* ── Graph section header with reset button ────────── */

.graph-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.graph-header-left { flex: 1; }

.graph-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid rgba(59,130,246,0.35);
  background: rgba(59,130,246,0.08);
  color: var(--accent-blue);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
  margin-bottom: 4px;
}

.graph-reset-btn:hover {
  background: rgba(59,130,246,0.15);
  border-color: rgba(59,130,246,0.55);
  color: #93c5fd;
}

/* Keyboard accessibility for question cards */
.q-card-v2[data-question-id]:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ── Dedicated graph entry / page ─────────────────── */
.graph-entry-section {
  padding: var(--section-padding) 0;
}

.graph-entry-card {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px;
  border: 1px solid rgba(96,165,250,0.18);
  border-radius: 28px;
  background:
    radial-gradient(circle at 15% 20%, rgba(96,165,250,0.18), transparent 32%),
    radial-gradient(circle at 85% 70%, rgba(167,139,250,0.16), transparent 30%),
    rgba(15,23,42,0.58);
  box-shadow: 0 24px 70px rgba(2,6,23,0.32);
}

.graph-entry-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,0.08), transparent 34%, rgba(96,165,250,0.06));
  pointer-events: none;
}

.graph-entry-copy {
  position: relative;
  max-width: 720px;
}

.graph-entry-copy p,
.graph-page-intro {
  color: var(--text-muted);
  line-height: 1.75;
}

.graph-entry-link {
  position: relative;
  white-space: nowrap;
}

.graph-hero {
  padding: 132px 0 32px;
}

.graph-hero-inner {
  max-width: 850px;
}

.graph-page-section {
  padding-top: 48px;
}

.graph-page-intro {
  max-width: 820px;
  margin: -8px 0 24px;
}

.graph-home-link {
  align-self: flex-start;
  color: var(--accent-blue);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  padding: 10px 14px;
  border: 1px solid rgba(96,165,250,0.18);
  border-radius: 999px;
  background: rgba(96,165,250,0.08);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.graph-home-link:hover,
.graph-home-link:focus-visible {
  transform: translateY(-1px);
  background: rgba(96,165,250,0.14);
  border-color: rgba(96,165,250,0.34);
}

@media (max-width: 780px) {
  .graph-entry-card {
    align-items: flex-start;
    flex-direction: column;
    padding: 26px;
  }

  .graph-entry-link {
    white-space: normal;
  }

  .graph-hero {
    padding-top: 112px;
  }
}