.problems-section {
  padding: 88px 0 72px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background-color: var(--color-white);
  border: var(--border-thick);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-ink);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.problem-pain {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
}

.problem-fix {
  font-size: 0.95rem;
  color: #3b4977;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms var(--spring-easing);
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: none;
}

.demo-section {
  padding: 88px 0;
  background-color: #f7eedb;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.demo-shell {
  padding: 24px;
  max-width: 980px;
  margin: 0 auto;
}

.demo-shell:hover {
  transform: none;
}

.demo-rail {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.demo-node {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.85rem;
  color: #55628b;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-md);
}

.demo-node:focus-visible {
  outline: 3px solid var(--color-sky);
  outline-offset: 2px;
}

.demo-node-dot {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  border: var(--border-thick);
  background-color: var(--color-white);
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.05rem;
  box-shadow: var(--shadow-ink-sm);
  transition: background-color var(--transition-fast), transform var(--transition-bounce);
}

.demo-node.done .demo-node-dot {
  background-color: var(--color-leaf);
}

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

.demo-node.active .demo-node-dot {
  background-color: var(--color-sun);
  transform: scale(1.15);
}

.demo-progress {
  height: 8px;
  border: var(--border-dense);
  border-radius: var(--radius-pill);
  background-color: var(--color-white);
  margin: 14px 0 20px;
  overflow: hidden;
}

.demo-progress-fill {
  height: 100%;
  width: 0;
  background-color: var(--color-coral);
}

.demo-stage {
  position: relative;
  min-height: 330px;
  border: var(--border-dense);
  border-radius: var(--radius-md);
  background-color: var(--color-paper);
  padding: 22px;
  overflow: hidden;
}

.demo-scene {
  display: none;
  flex-direction: column;
  gap: 14px;
}

.demo-scene.active {
  display: flex;
}

.demo-scene .anim {
  opacity: 0;
  transform: translateY(12px) scale(0.98);
}

.demo-scene.active .anim {
  animation: sceneIn 520ms var(--spring-easing) forwards;
  animation-delay: calc(var(--d, 0) * 380ms);
}

@keyframes sceneIn {
  to {
    opacity: 1;
    transform: none;
  }
}

.chat-bubble {
  max-width: 78%;
  padding: 10px 16px;
  border: var(--border-dense);
  border-radius: 18px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-ink-sm);
}

.chat-user {
  align-self: flex-end;
  background-color: var(--color-ink);
  color: var(--color-paper);
  border-bottom-right-radius: 6px;
}

.chat-agent {
  align-self: flex-start;
  background-color: var(--color-white);
  border-bottom-left-radius: 6px;
}

.doc-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc-row {
  display: grid;
  grid-template-columns: 150px 1fr 90px;
  align-items: center;
  gap: 12px;
  background-color: var(--color-white);
  border: var(--border-dense);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}

.doc-bar,
.load-bar,
.work-bar {
  height: 8px;
  border: var(--border-thin);
  border-radius: var(--radius-pill);
  background-color: #efe6d3;
  overflow: hidden;
  display: block;
}

.doc-bar i,
.load-bar i,
.work-bar i {
  display: block;
  height: 100%;
  width: 0;
  background-color: var(--color-sky);
}

.demo-scene.active .doc-bar i {
  animation: fillTo 900ms ease forwards;
  animation-delay: calc(var(--d, 0) * 380ms + 250ms);
}

.doc-row {
  --w: 100%;
}

@keyframes fillTo {
  to {
    width: var(--w, 100%);
  }
}

.doc-state {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-align: right;
  color: var(--color-leaf-dark);
}

.doc-state-draft {
  color: #a0661a;
}

.lane-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.lane {
  background-color: var(--color-white);
  border: var(--border-dense);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lane-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.85rem;
}

.avatar {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-pill);
  border: var(--border-dense);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

.a-asha { background-color: var(--color-coral); }
.a-ben { background-color: var(--color-sky); }
.a-you { background-color: var(--color-sun); }

.task-chip {
  border: var(--border-dense);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 700;
  background-color: var(--color-paper);
}

.demo-scene.active .load-bar i {
  animation: fillTo 900ms ease forwards;
  animation-delay: 2100ms;
  background-color: var(--color-leaf);
}

.vote-card {
  background-color: var(--color-white);
  border: var(--border-thick);
  border-radius: var(--radius-card);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

.vote-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.vote-people {
  display: flex;
  gap: 20px;
}

.vote-person {
  position: relative;
}

.vote-person .avatar {
  width: 48px;
  height: 48px;
  font-size: 1.1rem;
}

.vote-tick {
  position: absolute;
  right: -6px;
  bottom: -4px;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-pill);
  border: var(--border-dense);
  background-color: var(--color-leaf);
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vote-count {
  font-weight: 800;
}

.vote-number {
  font-family: var(--font-display);
  font-size: 1.6rem;
}

.stamp {
  align-self: center;
  border: 3px solid var(--color-riso-red);
  color: var(--color-riso-red);
  border-radius: var(--radius-sm);
  padding: 8px 18px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  background-color: rgba(255, 255, 255, 0.7);
}

.demo-scene.active .stamp {
  animation: stampIn 420ms var(--spring-easing) forwards;
  animation-delay: calc(var(--d, 0) * 380ms);
}

@keyframes stampIn {
  0% { opacity: 0; transform: scale(1.6) rotate(-8deg); }
  100% { opacity: 1; transform: scale(1) rotate(-4deg); }
}

.stamp-leaf {
  border-color: var(--color-leaf-dark);
  color: var(--color-leaf-dark);
}

.build-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.agent-card {
  background-color: var(--color-white);
  border: var(--border-dense);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.agent-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.85rem;
}

.agent-task {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
}

.agent-files {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.agent-files span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border: var(--border-thin);
  border-radius: 6px;
  padding: 2px 6px;
  background-color: var(--color-paper);
}

.demo-scene.active .work-bar i {
  animation: fillTo 2600ms ease-in-out forwards;
  animation-delay: 600ms;
  --w: 72%;
  background-color: var(--color-coral);
}

.overlap-toast {
  border: var(--border-dense);
  border-radius: var(--radius-md);
  background-color: var(--color-sun);
  padding: 10px 14px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow-ink-sm);
}

.wave-pill {
  align-self: flex-start;
  border: var(--border-dense);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-weight: 800;
  font-size: 0.8rem;
  background-color: var(--color-white);
}

.pr-card,
.retro-card {
  background-color: var(--color-white);
  border: var(--border-thick);
  border-radius: var(--radius-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pr-head,
.retro-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pr-icon {
  width: 30px;
  height: 30px;
  border: var(--border-dense);
  border-radius: var(--radius-pill);
  background-color: var(--color-leaf);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.pr-line,
.retro-line {
  font-weight: 600;
  color: #3b4977;
  padding-left: 4px;
}

.pr-check {
  color: var(--color-leaf-dark);
  font-weight: 800;
}

.loop-arrow {
  align-self: center;
  font-weight: 800;
  font-size: 1.05rem;
  border: var(--border-dense);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  background-color: var(--color-sky);
}

.demo-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.demo-caption {
  font-weight: 700;
  font-size: 0.95rem;
  flex: 1 1 320px;
  min-height: 3em;
}

.demo-controls {
  display: flex;
  gap: 10px;
}

.guide-section {
  padding: 88px 0;
}

.guide-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.guide-tab {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.95rem;
  padding: 10px 22px;
  border: var(--border-thick);
  border-radius: var(--radius-pill);
  background-color: var(--color-white);
  color: var(--color-ink);
  box-shadow: var(--shadow-ink-sm);
}

.guide-tab.active {
  background-color: var(--color-ink);
  color: var(--color-paper);
}

.guide-steps {
  list-style: none;
  counter-reset: guide;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.guide-steps[hidden] {
  display: none;
}

.guide-step {
  counter-increment: guide;
  background-color: var(--color-white);
  border: var(--border-thick);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-ink);
  padding: 22px 22px 22px 70px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: sceneIn 420ms var(--spring-easing) both;
}

.guide-step::before {
  content: counter(guide);
  position: absolute;
  left: 18px;
  top: 20px;
  width: 36px;
  height: 36px;
  border: var(--border-thick);
  border-radius: var(--radius-pill);
  background-color: var(--color-sun);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
}

.guide-step b {
  font-size: 1.02rem;
}

.guide-step span {
  font-size: 0.9rem;
  color: #3b4977;
}

.tips-card {
  padding: 28px;
}

.tips-card:hover {
  transform: none;
}

.tips-title {
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.tips-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 28px;
  padding-left: 20px;
}

.tips-list li {
  font-size: 0.95rem;
}

.terminal-code-string {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.5;
}

.terminal-code-box {
  gap: 16px;
  align-items: flex-start;
}

.terminal-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: #55628b;
}

.connect-prereq {
  margin-top: 12px;
  font-weight: 700;
  color: var(--color-ink);
}

.pillar-wide {
  grid-column: 1 / -1;
}

.pillar-wide .pillar-tool-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 992px) {
  .pillar-wide .pillar-tool-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .pillar-wide .pillar-tool-list {
    grid-template-columns: 1fr;
  }
}

.mvp-section {
  padding: 88px 0;
  background-color: #f7eedb;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.mvp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.mvp-list {
  list-style: none;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mvp-list:hover {
  transform: none;
}

.mvp-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-weight: 700;
}

.mvp-check {
  width: 26px;
  height: 26px;
  border: var(--border-dense);
  border-radius: var(--radius-pill);
  background-color: var(--color-leaf);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

@media (max-width: 992px) {
  .problem-grid,
  .guide-steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .problem-grid,
  .guide-steps,
  .mvp-grid,
  .tips-list,
  .lane-board,
  .build-grid {
    grid-template-columns: 1fr;
  }

  .demo-shell {
    padding: 16px;
  }

  .demo-rail {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 12px;
  }

  .demo-stage {
    min-height: 420px;
    padding: 14px;
  }

  .doc-row {
    grid-template-columns: 1fr 70px;
  }

  .doc-row .doc-bar {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .chat-bubble {
    max-width: 92%;
  }

  .terminal-tabs {
    flex-wrap: wrap;
    overflow: visible;
  }

  .terminal-code-string {
    word-break: normal;
  }

  .agent-tools-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll,
  .demo-scene .anim {
    opacity: 1;
    transform: none;
  }

  .doc-bar i,
  .load-bar i,
  .work-bar i {
    width: var(--w, 100%);
  }
}