:root {
  --demo-surface: #ffffff;
  --demo-surface-soft: #f5f9ff;
  --demo-ink: #112033;
  --demo-muted: #5b6d84;
  --demo-line: #d8e4f2;
  --demo-brand: #0563bb;
  --demo-brand-2: #00a8d8;
  --demo-success: #12855a;
  --demo-warn: #c17a00;
  --demo-danger: #c03d3d;
  --demo-shadow: 0 18px 40px rgba(17, 32, 51, 0.08);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.project-shell {
  padding-top: 32px;
  padding-bottom: 56px;
}

.project-hero {
  background:
    radial-gradient(circle at top left, rgba(0, 168, 216, 0.12), transparent 32%),
    radial-gradient(circle at bottom right, rgba(5, 99, 187, 0.16), transparent 34%),
    linear-gradient(135deg, #f9fcff 0%, #eef6ff 48%, #ffffff 100%);
  border: 1px solid rgba(5, 99, 187, 0.08);
  border-radius: 28px;
  box-shadow: var(--demo-shadow);
  padding: 28px;
  margin-bottom: 28px;
}

.project-heading {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.project-heading h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.05;
  color: var(--demo-ink);
}

.project-subtitle {
  margin: 10px 0 0;
  max-width: 760px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--demo-muted);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-start;
}

.project-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(5, 99, 187, 0.08);
  border: 1px solid rgba(5, 99, 187, 0.12);
  color: var(--demo-ink);
  font-size: 13px;
  font-weight: 600;
}

.project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 22px;
  align-items: stretch;
}

.project-visual {
  background: linear-gradient(135deg, #f8fbff 0%, #eef5fd 100%);
  border-radius: 22px;
  padding: 18px;
  border: 1px solid var(--demo-line);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.project-visual img {
  width: 100%;
  height: min(420px, 50vw);
  min-height: 280px;
  object-fit: cover;
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(17, 32, 51, 0.08);
}

.project-sidecard {
  background: var(--demo-surface);
  border: 1px solid var(--demo-line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 12px 26px rgba(17, 32, 51, 0.05);
}

.project-sidecard h3,
.project-sidecard h4 {
  margin: 0 0 12px;
  color: var(--demo-ink);
}

.project-sidecard p {
  margin: 0 0 12px;
  line-height: 1.75;
  color: var(--demo-muted);
}

.project-sidecard ul,
.project-content-card ul,
.project-content-card ol {
  margin: 0;
  padding-left: 20px;
  color: var(--demo-muted);
}

.project-sidecard li,
.project-content-card li {
  margin-bottom: 10px;
  line-height: 1.65;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.project-stack span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(5, 99, 187, 0.08), rgba(0, 168, 216, 0.08));
  border: 1px solid rgba(5, 99, 187, 0.12);
  font-size: 13px;
  color: var(--demo-ink);
  font-weight: 600;
}

.project-demo-card,
.project-content-card {
  background: var(--demo-surface);
  border: 1px solid var(--demo-line);
  border-radius: 24px;
  box-shadow: var(--demo-shadow);
  padding: 22px;
  margin-top: 24px;
}

.project-demo-card h4,
.project-content-card h4 {
  margin: 0 0 12px;
  color: var(--demo-ink);
}

.project-demo-card p,
.project-content-card p {
  color: var(--demo-muted);
  line-height: 1.7;
}

.project-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 24px;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.project-actions .btn-scroll,
.project-actions a.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
}

.project-actions a.secondary-link {
  border: 1px solid var(--demo-line);
  background: #f8fbff;
  color: var(--demo-ink);
  font-weight: 600;
}

.project-demo-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.project-demo-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.project-demo-title p {
  margin: 0;
  max-width: 760px;
}

.project-demo-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.demo-badge.live {
  background: rgba(18, 133, 90, 0.12);
  color: var(--demo-success);
}

.demo-badge.replay {
  background: rgba(5, 99, 187, 0.12);
  color: var(--demo-brand);
}

.demo-badge.local {
  background: rgba(193, 122, 0, 0.14);
  color: var(--demo-warn);
}

.demo-frame {
  background:
    linear-gradient(180deg, rgba(5, 99, 187, 0.04), transparent),
    linear-gradient(135deg, #f8fbff 0%, #ffffff 100%);
  border: 1px solid var(--demo-line);
  border-radius: 22px;
  overflow: hidden;
}

.demo-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: rgba(17, 32, 51, 0.04);
  border-bottom: 1px solid var(--demo-line);
}

.demo-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.demo-toolbar-title {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.demo-toolbar-title strong {
  color: var(--demo-ink);
}

.demo-toolbar-title span {
  color: var(--demo-muted);
  font-size: 13px;
}

.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-controls::-webkit-scrollbar {
  display: none;
}

.demo-controls {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.demo-btn {
  border: 1px solid var(--demo-line);
  background: #ffffff;
  color: var(--demo-ink);
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.demo-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(17, 32, 51, 0.08);
}

.demo-btn.primary {
  background: linear-gradient(135deg, var(--demo-brand), var(--demo-brand-2));
  border-color: transparent;
  color: #ffffff;
}

.demo-btn.soft {
  background: #f6faff;
}

.demo-stage {
  padding: 18px;
}

body.demo-focus-open {
  overflow: hidden;
}

.project-demo-card.is-focused {
  position: fixed;
  inset: 16px;
  z-index: 5000;
  margin: 0;
  overflow: hidden;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.project-demo-card.is-focused .demo-frame {
  display: flex;
  flex-direction: column;
  height: calc(100dvh - 210px);
}

.project-demo-card.is-focused .demo-stage {
  flex: 1 1 auto;
  overflow: auto;
}

.demo-hero-scene {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: 18px;
  align-items: stretch;
}

.demo-hero-copy,
.demo-visual-card {
  border: 1px solid var(--demo-line);
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  padding: 18px;
}

.demo-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: space-between;
}

.demo-scene-kicker {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(5, 99, 187, 0.09);
  color: var(--demo-brand);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.demo-hero-copy h5 {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.12;
  color: var(--demo-ink);
}

.demo-hero-copy p {
  margin: 0;
  line-height: 1.72;
}

.demo-scene-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.demo-scene-stat {
  border: 1px solid var(--demo-line);
  border-radius: 16px;
  padding: 12px;
  background: #ffffff;
}

.demo-scene-stat span {
  display: block;
  margin-bottom: 6px;
  color: var(--demo-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.demo-scene-stat strong {
  color: var(--demo-ink);
  font-size: 18px;
  line-height: 1.2;
}

.demo-story-steps {
  display: grid;
  gap: 10px;
}

.demo-story-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: center;
  padding: 11px 12px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid var(--demo-line);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.demo-story-step.active,
.demo-story-step.done {
  border-color: rgba(5, 99, 187, 0.22);
  box-shadow: 0 10px 20px rgba(17, 32, 51, 0.06);
}

.demo-story-step.active {
  transform: translateY(-1px);
}

.demo-story-step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #edf4fb;
  color: var(--demo-ink);
  font-size: 13px;
  font-weight: 800;
}

.demo-story-step.active .demo-story-step-index,
.demo-story-step.done .demo-story-step-index {
  background: linear-gradient(135deg, var(--demo-brand), var(--demo-brand-2));
  color: #ffffff;
}

.demo-story-step strong {
  color: var(--demo-ink);
  font-size: 14px;
}

.demo-compact-log {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.demo-compact-log-entry {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 16px;
  background: #0f1e30;
  color: #dcecff;
  font-size: 13px;
  line-height: 1.55;
}

.demo-compact-log-entry strong {
  color: #89d8ff;
}

.demo-visual-footer {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 12px;
  margin-top: 14px;
}

.demo-countdown-card,
.demo-transfer-summary,
.demo-target-note {
  border: 1px solid var(--demo-line);
  border-radius: 18px;
  background: #ffffff;
  padding: 14px;
}

.demo-countdown-card {
  display: flex;
  align-items: center;
  gap: 12px;
}

.demo-countdown-card span,
.demo-transfer-summary strong,
.demo-target-note strong {
  display: block;
}

.demo-countdown-card span,
.demo-target-note p {
  color: var(--demo-muted);
}

.demo-countdown-card strong {
  color: var(--demo-ink);
  font-size: 20px;
}

.demo-ring {
  --ring-progress: 0%;
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: conic-gradient(var(--demo-brand) var(--ring-progress), #e4edf7 0);
  flex: 0 0 auto;
}

.demo-ring::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: #ffffff;
}

.demo-sensor-row,
.demo-file-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-sensor-dot,
.demo-file-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef6ff;
  border: 1px solid var(--demo-line);
  color: var(--demo-ink);
  font-size: 12px;
  font-weight: 700;
}

.demo-sensor-dot.active {
  background: rgba(18, 133, 90, 0.12);
  color: var(--demo-success);
}

.demo-light-scene {
  position: relative;
  min-height: 320px;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(180deg, #dfeaf5 0%, #f8fbff 36%, #d3e2ef 100%);
  border: 1px solid rgba(5, 99, 187, 0.12);
}

.demo-light-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 24%, rgba(255, 213, 89, 0.6), transparent 34%);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.demo-light-scene.lamp-on .demo-light-glow {
  opacity: 1;
}

.demo-room-door {
  position: absolute;
  left: 18px;
  bottom: 26px;
  width: 64px;
  height: 132px;
  border-radius: 16px 16px 6px 6px;
  background: linear-gradient(180deg, #99633b, #70411f);
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.demo-room-sensor-beam {
  position: absolute;
  left: 92px;
  top: 108px;
  width: 110px;
  height: 90px;
  background: linear-gradient(90deg, rgba(0, 168, 216, 0.2), rgba(0, 168, 216, 0));
  clip-path: polygon(0 50%, 100% 0, 100% 100%);
  opacity: 0.15;
  transition: opacity 0.3s ease;
}

.demo-room-sensor-beam.active {
  opacity: 1;
}

.demo-ceiling-lamp {
  position: absolute;
  left: 50%;
  top: 24px;
  transform: translateX(-50%);
}

.demo-lamp-shell {
  width: 94px;
  height: 94px;
  border-radius: 50%;
  background: radial-gradient(circle, #d7e5f4 10%, #f8fbff 70%, #ffffff 100%);
  box-shadow: inset 0 0 0 10px rgba(5, 99, 187, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.demo-lamp-shell.on {
  background: radial-gradient(circle, #fff8bf 14%, #ffd166 46%, #ffb703 72%, #fffef3 100%);
  box-shadow:
    0 0 0 10px rgba(255, 183, 3, 0.12),
    0 0 36px rgba(255, 183, 3, 0.44);
  transform: scale(1.03);
}

.demo-room-person {
  position: absolute;
  bottom: 32px;
  left: 14%;
  width: 60px;
  height: 140px;
  transition: left 0.55s ease, opacity 0.4s ease, transform 0.55s ease;
  opacity: 0.55;
}

.demo-room-person.inside {
  left: 62%;
  opacity: 1;
}

.demo-room-person.leaving {
  left: 36%;
  opacity: 0.82;
  transform: scale(0.98);
}

.demo-room-person.outside {
  left: 8%;
}

.demo-person-head,
.demo-person-body {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: #17324f;
}

.demo-person-head {
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
}

.demo-person-body {
  top: 26px;
  width: 20px;
  height: 68px;
  border-radius: 18px;
  box-shadow:
    -18px 18px 0 -8px #17324f,
    18px 18px 0 -8px #17324f,
    -10px 82px 0 -8px #17324f,
    10px 82px 0 -8px #17324f;
}

.demo-room-label {
  position: absolute;
  right: 18px;
  top: 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(5, 99, 187, 0.12);
  color: var(--demo-ink);
  font-size: 12px;
  font-weight: 800;
}

.demo-room-floor {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 78px;
  background: linear-gradient(180deg, #d0b087 0%, #c09162 100%);
}

.demo-migration-scene {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: center;
  min-height: 292px;
}

.demo-flow-track {
  position: absolute;
  left: 11%;
  right: 11%;
  top: 42%;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(5, 99, 187, 0.12), rgba(0, 168, 216, 0.2));
}

.demo-flow-packet {
  position: absolute;
  top: 27%;
  transform: translateX(-50%);
  left: var(--packet-progress);
  transition: left 0.45s ease;
}

.demo-flow-packet-label {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--demo-brand), var(--demo-brand-2));
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 12px 22px rgba(5, 99, 187, 0.25);
}

.demo-migration-node {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 22px 16px;
  border-radius: 22px;
  border: 1px solid var(--demo-line);
  background: #ffffff;
  text-align: center;
}

.demo-node-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: #edf4fb;
  color: var(--demo-brand);
  font-size: 28px;
}

.demo-migration-node strong {
  color: var(--demo-ink);
}

.demo-migration-node span {
  color: var(--demo-muted);
  font-size: 13px;
}

.demo-migration-node.active {
  border-color: rgba(5, 99, 187, 0.28);
  box-shadow: 0 16px 30px rgba(5, 99, 187, 0.1);
}

.demo-migration-node.active .demo-node-icon,
.demo-migration-node.done .demo-node-icon {
  background: linear-gradient(135deg, var(--demo-brand), var(--demo-brand-2));
  color: #ffffff;
}

.demo-migration-node.armed .demo-node-icon {
  background: rgba(193, 122, 0, 0.14);
  color: var(--demo-warn);
}

.demo-migration-footer {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 12px;
  margin-top: 14px;
}

.demo-file-badge.moving {
  background: rgba(5, 99, 187, 0.1);
}

.demo-file-badge.done {
  background: rgba(18, 133, 90, 0.12);
  color: var(--demo-success);
}

.demo-target-note p {
  margin: 8px 0 0;
  line-height: 1.6;
}

.demo-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.demo-metric {
  background: #ffffff;
  border: 1px solid var(--demo-line);
  border-radius: 16px;
  padding: 14px;
}

.demo-metric span {
  display: block;
  color: var(--demo-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.demo-metric strong {
  font-size: 24px;
  color: var(--demo-ink);
}

.demo-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 16px;
}

.demo-panel {
  background: #ffffff;
  border: 1px solid var(--demo-line);
  border-radius: 18px;
  padding: 16px;
  min-height: 100%;
}

.demo-panel h5 {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--demo-ink);
}

.demo-panel p {
  margin: 0 0 12px;
}

.demo-log {
  display: grid;
  gap: 8px;
  max-height: 320px;
  overflow: auto;
  padding-right: 4px;
}

.demo-log-entry {
  background: #0f1e30;
  color: #dcecff;
  border-radius: 14px;
  padding: 10px 12px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  line-height: 1.55;
}

.demo-log-entry strong {
  color: #7fd8ff;
}

.demo-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--demo-line);
  background: #f9fbff;
  color: var(--demo-ink);
  font-size: 13px;
  font-weight: 600;
}

.demo-progress {
  height: 12px;
  width: 100%;
  border-radius: 999px;
  background: #edf3fb;
  overflow: hidden;
  border: 1px solid var(--demo-line);
}

.demo-progress-bar {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--demo-brand), var(--demo-brand-2));
  transition: width 0.25s ease;
}

.demo-lighting-room {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
}

.demo-room-card,
.demo-device-card {
  border-radius: 18px;
  background: linear-gradient(160deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid var(--demo-line);
  padding: 16px;
}

.demo-lamp {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  margin: 0 auto 14px;
  background: radial-gradient(circle at center, #d7e5f4 10%, #edf4fb 64%, #ffffff 100%);
  box-shadow: inset 0 0 0 10px rgba(5, 99, 187, 0.05);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.demo-lamp.on {
  background: radial-gradient(circle at center, #fff9c4 8%, #ffd86f 34%, #ffb703 68%, #ffffff 100%);
  box-shadow:
    0 0 0 8px rgba(255, 183, 3, 0.12),
    0 0 28px rgba(255, 183, 3, 0.42);
  transform: scale(1.02);
}

.demo-room-status {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.demo-status-chip {
  padding: 10px 12px;
  border-radius: 14px;
  background: #f8fbff;
  border: 1px solid var(--demo-line);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.demo-status-chip.on {
  background: rgba(18, 133, 90, 0.12);
  color: var(--demo-success);
}

.demo-status-chip.pending {
  background: rgba(193, 122, 0, 0.12);
  color: var(--demo-warn);
}

.demo-sensor-list {
  display: grid;
  gap: 10px;
}

.demo-sensor {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid var(--demo-line);
}

.demo-sensor span:last-child {
  font-weight: 700;
  color: var(--demo-muted);
}

.demo-sensor.active span:last-child {
  color: var(--demo-success);
}

.demo-sequence {
  display: grid;
  gap: 12px;
}

.demo-step {
  position: relative;
  padding: 14px 16px 14px 18px;
  border-radius: 16px;
  border: 1px solid var(--demo-line);
  background: #ffffff;
}

.demo-step::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  width: 4px;
  height: calc(100% - 32px);
  border-radius: 999px;
  background: #d6e4f4;
}

.demo-step.active::before,
.demo-step.done::before {
  background: linear-gradient(180deg, var(--demo-brand), var(--demo-brand-2));
}

.demo-step strong {
  display: block;
  margin-bottom: 6px;
  color: var(--demo-ink);
}

.demo-step small {
  color: var(--demo-muted);
}

.demo-step .demo-btn {
  margin-top: 10px;
}

.demo-transfer-grid {
  display: grid;
  grid-template-columns: 1fr 0.6fr 1fr;
  gap: 16px;
  align-items: center;
}

.demo-transfer-column {
  display: grid;
  gap: 10px;
}

.demo-device-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.demo-data-list {
  display: grid;
  gap: 8px;
}

.demo-data-chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--demo-line);
  background: #f9fbff;
  color: var(--demo-ink);
  transition: transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
}

.demo-data-chip.moving {
  background: rgba(5, 99, 187, 0.08);
  transform: translateX(6px);
}

.demo-data-chip.done {
  background: rgba(18, 133, 90, 0.12);
}

.demo-transfer-lane {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
}

.demo-transfer-core {
  width: 100%;
  min-height: 180px;
  border-radius: 18px;
  border: 1px dashed rgba(5, 99, 187, 0.24);
  background: linear-gradient(180deg, rgba(5, 99, 187, 0.05), rgba(0, 168, 216, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
}

.demo-dropzone {
  border: 1px dashed rgba(5, 99, 187, 0.26);
  border-radius: 20px;
  padding: 20px;
  text-align: center;
  background: linear-gradient(180deg, rgba(5, 99, 187, 0.03), rgba(0, 168, 216, 0.08));
}

.demo-dropzone strong {
  display: block;
  margin-bottom: 8px;
  color: var(--demo-ink);
}

.demo-file-list,
.demo-query-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #f8fbff;
  border: 1px solid var(--demo-line);
  font-size: 13px;
  font-weight: 600;
}

.demo-toggle input {
  margin: 0;
}

.demo-result-card {
  border-radius: 18px;
  border: 1px solid var(--demo-line);
  background: #ffffff;
  padding: 16px;
}

.demo-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.demo-result-key {
  display: grid;
  gap: 6px;
}

.demo-result-key span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--demo-muted);
}

.demo-result-key strong {
  color: var(--demo-ink);
}

.demo-ranking-list {
  display: grid;
  gap: 10px;
}

.demo-ranking-item {
  border: 1px solid var(--demo-line);
  background: #ffffff;
  border-radius: 14px;
  padding: 12px;
}

.demo-ranking-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--demo-ink);
}

.demo-answer {
  border-radius: 18px;
  padding: 18px;
  border: 1px solid var(--demo-line);
  background: linear-gradient(180deg, rgba(5, 99, 187, 0.04), #ffffff);
}

.demo-answer p {
  margin-bottom: 12px;
}

.demo-citation {
  border-left: 3px solid var(--demo-brand);
  padding-left: 12px;
  margin-bottom: 12px;
}

.demo-chat {
  display: grid;
  gap: 12px;
}

.demo-chat-bubble {
  max-width: 82%;
  padding: 14px 16px;
  border-radius: 18px;
  line-height: 1.7;
}

.demo-chat-bubble.user {
  margin-left: auto;
  background: linear-gradient(135deg, var(--demo-brand), var(--demo-brand-2));
  color: #ffffff;
}

.demo-chat-bubble.assistant {
  background: #f7fbff;
  border: 1px solid var(--demo-line);
  color: var(--demo-ink);
}

.demo-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  padding: 0 8px;
  height: 28px;
  border-radius: 9px;
  border: 1px solid var(--demo-line);
  background: #ffffff;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  color: var(--demo-ink);
}

@media (max-width: 991px) {
  .project-layout,
  .demo-hero-scene,
  .demo-grid,
  .demo-lighting-room,
  .demo-transfer-grid,
  .project-card-grid,
  .demo-result-grid {
    grid-template-columns: 1fr;
  }

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

  .demo-scene-stats,
  .demo-visual-footer,
  .demo-migration-footer {
    grid-template-columns: 1fr;
  }

  .project-visual img {
    height: 300px;
  }
}

@media (max-width: 768px) {
  .demo-hero-scene,
  .demo-grid {
    grid-template-columns: 1fr;
  }

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

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

  .demo-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .demo-toolbar-actions {
    width: 100%;
  }
}

@media (max-width: 575px) {
  .project-demo-card.is-focused {
    inset: 8px;
    padding: 14px;
    border-radius: 18px;
  }

  .project-demo-card.is-focused .demo-frame {
    height: calc(100dvh - 150px);
  }

  .project-hero,
  .project-demo-card,
  .project-content-card,
  .project-sidecard {
    padding: 16px;
    border-radius: 18px;
  }

  .project-heading h1 {
    font-size: 28px;
  }

  .project-subtitle {
    font-size: 15px;
  }

  .demo-toolbar {
    padding: 12px;
  }

  .demo-stage {
    padding: 14px;
  }

  .demo-toolbar-actions {
    width: 100%;
    justify-content: space-between;
    align-items: flex-start;
  }

  .demo-controls {
    flex: 1 1 auto;
    width: auto;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .demo-controls .demo-btn {
    flex: 0 0 auto;
  }

  .demo-toolbar-actions .js-demo-focus-toggle {
    flex: 0 0 auto;
  }

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

  .demo-scene-stats {
    grid-template-columns: 1fr;
  }

  .demo-story-step {
    grid-template-columns: 30px 1fr;
    padding: 10px 11px;
  }

  .demo-hero-copy {
    order: 2;
  }

  .demo-visual-card {
    order: 1;
  }

  .demo-light-scene {
    min-height: 250px;
  }

  .demo-room-door {
    width: 52px;
    height: 110px;
  }

  .demo-room-person {
    width: 48px;
    height: 120px;
  }

  .demo-room-person.inside {
    left: 56%;
  }

  .demo-migration-scene {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 14px;
    padding-left: 34px;
  }

  .demo-flow-track {
    top: 16px;
    bottom: 16px;
    left: 18px;
    right: auto;
    width: 8px;
    height: auto;
    background: linear-gradient(180deg, rgba(5, 99, 187, 0.12), rgba(0, 168, 216, 0.2));
  }

  .demo-flow-packet {
    top: var(--packet-progress);
    left: 12px;
    transform: none;
    transition: top 0.45s ease;
  }

  .demo-flow-packet-label {
    width: 18px;
    height: 18px;
    padding: 0;
    border-radius: 50%;
    font-size: 0;
    line-height: 0;
    box-shadow: 0 0 0 4px rgba(5, 99, 187, 0.12);
  }

  .demo-compact-log-entry {
    grid-template-columns: 1fr;
  }
}