/* ── Reset & Base ─────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #fafafa;
  --bg-card: #fff;
  --fg: #111;
  --fg-muted: #666;
  --fg-light: #999;
  --border: #e5e5e5;
  --accent: #0080FF;
  --radius: 0.5rem;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ─────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  max-width: 72rem;
  margin: 0 auto;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.nav-left svg {
  width: 1.5rem;
  height: 1.5rem;
  display: block;
}

.nav-wordmark {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.nav-link {
  font-size: 0.875rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--fg);
}

/* ── Hero ────────────────────────────────────────────── */
.hero {
  position: relative;
  text-align: center;
  padding: 7rem 2rem 5rem;
  max-width: 48rem;
  margin: 0 auto;
  overflow: hidden;
}

/* Subtle concentric rings behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  translate: -50% -55%;
  width: 32rem;
  height: 32rem;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow:
    0 0 0 4rem rgba(0, 0, 0, 0.015),
    0 0 0 8rem rgba(0, 0, 0, 0.01),
    0 0 0 12rem rgba(0, 0, 0, 0.005);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--fg);
}

.hero h1 em {
  font-family: 'Georgia', 'Times New Roman', serif;
  font-style: italic;
  font-weight: 400;
}

.hero p {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 28rem;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--fg);
  color: #fff;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.cta:hover {
  opacity: 0.8;
}

/* ── Audience Sections ────────────────────────────────── */
.audience {
  border-top: 1px solid var(--border);
  padding: 4.5rem 2.5rem;
}

.audience-inner {
  max-width: 64rem;
  margin: 0 auto;
}

.label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.audience h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 0.625rem;
  color: var(--fg);
}

.audience h2 em {
  font-family: 'Georgia', 'Times New Roman', serif;
  font-style: italic;
  font-weight: 400;
}

.audience-subtitle {
  font-size: 1rem;
  color: var(--fg-muted);
  margin-bottom: 2rem;
  max-width: 36rem;
  line-height: 1.7;
}

/* ── Value Props Grid ────────────────────────────────── */
.props {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 48rem) {
  .props {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
}

.card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--fg);
}

.card p {
  color: var(--fg-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ── Footer ──────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 2.5rem 2rem;
  color: var(--fg-light);
  font-size: 0.8125rem;
  border-top: 1px solid var(--border);
  max-width: 64rem;
  margin: 0 auto;
}