:root {
  --bg: #faf9f5;
  --bg-soft: #f4efe6;
  --surface: #ffffff;
  --surface-strong: #f8f5ee;
  --surface-accent: #e8dfd2;
  --text: #141413;
  --muted: #5e5d59;
  --line: #e6dfd4;
  --line-strong: #cfc7ba;
  --accent: #cb7d5b;
  --accent-soft: #efe1d7;
  --shadow: 0 12px 32px rgba(20, 20, 19, 0.06);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 14px;
  --page-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

h1,
h2,
h3,
p,
ul {
  margin-top: 0;
}

.page-shell {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto 72px;
}

.hero {
  padding: 22px 0 64px;
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(203, 125, 91, 0.14);
}

.brand-name,
.top-link {
  font-size: 0.95rem;
  font-weight: 500;
}

.top-link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.top-link:hover {
  border-color: currentColor;
}

.hero-grid,
.reality-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, 0.98fr);
  gap: 48px;
  align-items: center;
}

.hero-grid {
  margin-top: 72px;
}

.eyebrow,
.section-kicker,
.card-label,
.panel-index,
.timeline-stage,
.mock-label {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.mock-label {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

h1,
h2,
.hero-proof strong,
.final-hub,
.final-branch,
.ecosystem-center strong,
.stack-block strong {
  font-family: Georgia, "Iowan Old Style", "Times New Roman", serif;
}

h1 {
  max-width: 11ch;
  margin-bottom: 22px;
  font-size: clamp(3.3rem, 7vw, 5rem);
  line-height: 1.03;
  letter-spacing: -0.04em;
  font-weight: 500;
}

h2 {
  max-width: 15ch;
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 500;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.35rem;
  line-height: 1.2;
  font-weight: 500;
}

.hero-lead,
.ask-tags,
.final-copy p,
.reality-copy p {
  font-size: 1.38rem;
  line-height: 1.5;
  color: var(--muted);
}

.hero-lead {
  max-width: 30rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
}

.button-primary {
  color: var(--bg);
  background: var(--text);
}

.button-secondary {
  color: var(--text);
  background: transparent;
  border-color: var(--line-strong);
}

.hero-points,
.bullet-list,
.check-list {
  padding: 0;
  list-style: none;
}

.hero-points li,
.bullet-list li,
.check-list li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.65;
}

.hero-points li + li,
.bullet-list li + li,
.check-list li + li {
  margin-top: 10px;
}

.hero-points li::before,
.bullet-list li::before,
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--text);
}

.hero-visual {
  display: grid;
  gap: 16px;
}

.hero-visual-frame,
.hero-proof,
.info-panel,
.usecase-card,
.workflow-board,
.roadmap-phase,
.final-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.hero-visual-frame {
  padding: 0;
  background: var(--surface-strong);
  overflow: hidden;
}

.hero-illustration {
  display: block;
  width: 100%;
  height: auto;
}

.hero-proof p,
.ecosystem-center p,
.ecosystem-tile p,
.scenario-card p,
.stack-block span,
.roadmap-phase p,
.final-panel p,
.problem-stage,
.problem-arrow {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.hero-proof-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-proof {
  padding: 20px;
  background: var(--surface-strong);
}

.hero-proof strong {
  display: block;
  font-size: 1.35rem;
  font-weight: 500;
}

.section {
  padding: 92px 0;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  gap: 12px;
  margin-bottom: 42px;
}

.problem-landscape {
  display: grid;
  gap: 22px;
}

.problem-flow {
  display: grid;
  grid-template-columns: repeat(7, auto);
  gap: 12px;
  align-items: center;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
}

.problem-stage {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  font-weight: 500;
}

.problem-stage-alert {
  background: var(--accent-soft);
  border-color: #e0c7b9;
}

.problem-arrow,
.workflow-arrow {
  font-size: 1.45rem;
  text-align: center;
}

.problem-grid,
.usecase-grid,
.connectivity-grid,
.roadmap-track {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-panel,
.usecase-card,
.scenario-card,
.roadmap-phase {
  padding: 28px;
}

.panel-index {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 0.82rem;
}

.workflow-board {
  padding: 0;
  background: var(--surface-strong);
  overflow: hidden;
}

.workflow-illustration {
  display: block;
  width: 100%;
  height: auto;
}

.usecase-image,
.wide-image,
.summary-image {
  display: block;
  width: 100%;
  height: auto;
}

.usecase-card {
  background: var(--surface-strong);
}

.usecase-image {
  margin-bottom: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}

.wide-image-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.roadmap-phase {
  background: var(--surface-strong);
}

.final-panel {
  display: grid;
  gap: 24px;
  padding: 34px;
  background: var(--surface-strong);
}

.final-copy p {
  max-width: 34rem;
}

.final-map {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.ask-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
  grid-column: 1 / -1;
  font-size: 1rem;
}

.ask-tags span {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  font-weight: 500;
  color: var(--text);
}

@media (max-width: 1100px) {
  .hero-grid,
  .problem-grid,
  .usecase-grid,
  .final-panel,
  .roadmap-track {
    grid-template-columns: 1fr;
  }

  .problem-flow {
    grid-template-columns: 1fr;
  }

  .problem-arrow {
    transform: rotate(90deg);
  }

  .hero-proof-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(calc(100% - 18px), var(--page-width));
    margin: 0 auto 32px;
  }

  .hero {
    padding: 18px 0 42px;
  }

  .section {
    padding: 64px 0;
  }

  h1 {
    font-size: clamp(2.6rem, 16vw, 4.2rem);
  }

  h2 {
    font-size: clamp(1.8rem, 9vw, 2.8rem);
  }

  .hero-lead,
  .final-copy p,
  .reality-copy p {
    font-size: 1.08rem;
  }

  .topbar,
  .hero-actions,
  .ask-tags {
    gap: 10px;
  }

  .hero-visual-frame,
  .workflow-board,
  .wide-image-frame,
  .final-panel,
  .problem-flow,
  .info-panel,
  .usecase-card,
  .scenario-card,
  .roadmap-phase {
    padding: 20px 16px;
  }
}