:root {
  --bg: #f5f1e8;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --text: #1f2a2e;
  --muted: #5f6b70;
  --line: rgba(31, 42, 46, 0.12);
  --shadow: 0 24px 60px rgba(54, 50, 43, 0.14);
  --navy: #223847;
  --rust: #a44d2a;
  --sand: #d3ab63;
  --olive: #78815c;
  --cyan: #3c7f85;
  --plum: #7f5f74;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(211, 171, 99, 0.3), transparent 28rem),
    radial-gradient(circle at top right, rgba(60, 127, 133, 0.18), transparent 24rem),
    linear-gradient(180deg, #f7f2e9 0%, #f2ede4 100%);
  font-family: "Source Sans 3", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 42, 46, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 42, 46, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 85%);
  pointer-events: none;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.hero,
.content-section {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.hero {
  padding: clamp(1.5rem, 3vw, 3rem);
  margin-bottom: 1.25rem;
}

.eyebrow,
.kicker {
  margin: 0 0 0.8rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Sora", sans-serif;
}

h1 {
  max-width: 11ch;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.hero-copy {
  max-width: 60rem;
  margin: 1.25rem 0 0;
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  line-height: 1.65;
  color: var(--muted);
}

.hero-panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.hero-panel,
.info-card,
.callout-card,
.persona-card,
.metric-card,
.term-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel-strong);
}

.hero-panel {
  padding: 1.25rem;
}

.hero-panel h2 {
  font-size: 1rem;
  margin-bottom: 0.55rem;
}

.hero-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.hero-panel span {
  color: var(--rust);
  font-weight: 700;
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.section-nav a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  color: var(--navy);
  text-decoration: none;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.72);
}

.section-nav a:hover,
.section-nav a:focus-visible {
  background: var(--navy);
  color: #fff;
}

.content-section {
  padding: clamp(1.35rem, 3vw, 2.4rem);
  margin-top: 1.25rem;
}

.section-heading {
  margin-bottom: 1.4rem;
}

.section-heading h2 {
  font-size: clamp(1.55rem, 3vw, 2.4rem);
  letter-spacing: -0.05em;
}

.two-column-grid,
.three-column-grid,
.persona-grid,
.terms-grid {
  display: grid;
  gap: 1rem;
}

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

.three-column-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.terms-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-card,
.metric-card,
.term-card {
  padding: 1.2rem;
}

.info-card h3,
.metric-card h3,
.term-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.7rem;
}

.info-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.info-card li + li {
  margin-top: 0.55rem;
}

.callout-card {
  margin-top: 1rem;
  padding: 1.25rem;
  border-left: 6px solid var(--sand);
}

.callout-card p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.persona-card {
  position: relative;
  overflow: hidden;
  padding: 1.3rem;
}

.persona-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 8px;
  background: var(--accent, var(--navy));
}

.persona-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.45rem;
}

.persona-summary {
  margin: 0;
  font-weight: 700;
  color: var(--navy);
}

.persona-detail {
  margin: 0.65rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.accent-amber {
  --accent: var(--sand);
}

.accent-blue {
  --accent: var(--navy);
}

.accent-rust {
  --accent: var(--rust);
}

.accent-slate {
  --accent: #5f6f7e;
}

.accent-green {
  --accent: var(--olive);
}

.accent-plum {
  --accent: var(--plum);
}

.accent-cyan {
  --accent: var(--cyan);
}

.accent-sand {
  --accent: #b08755;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-step {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel-strong);
}

.step-number {
  display: grid;
  place-items: center;
  min-height: 88px;
  border-radius: 18px;
  background: linear-gradient(160deg, var(--navy), #37556b);
  color: #fff;
  font-family: "Sora", sans-serif;
  font-size: 1.45rem;
  font-weight: 700;
}

.step-body h3 {
  font-size: 1.08rem;
  margin-bottom: 0.35rem;
}

.step-owner {
  margin: 0 0 0.45rem;
  color: var(--rust);
  font-weight: 700;
}

.step-body p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.metric-card p,
.term-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 980px) {
  .hero-panels,
  .two-column-grid,
  .three-column-grid,
  .persona-grid,
  .terms-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 1rem, 100%);
    padding-top: 0.85rem;
  }

  .hero,
  .content-section {
    border-radius: 22px;
  }

  .timeline-step {
    grid-template-columns: 1fr;
  }

  .step-number {
    min-height: 64px;
  }

  .section-nav {
    flex-direction: column;
  }

  .section-nav a {
    text-align: center;
  }
}