/* Shared page shell — matches /research.html aesthetics.
   Black hero band, Snap yellow accent, white content, pill CTAs. */

:root {
  --ps-black: #000;
  --ps-ink: #111111;
  --ps-ink-soft: #444444;
  --ps-muted: #3f4453;
  --ps-lede: #b8b8bd;
  --ps-yellow: #fefc00;
  --ps-bg: #ffffff;
  --ps-surface: #f6f7f9;
  --ps-border: #ececef;
  --ps-max: 1120px;
  --ps-focus: 0 0 0 3px rgba(254, 252, 0, 0.55);
}

.ps-page {
  background: var(--ps-bg);
  position: relative;
  min-height: 60vh;
}

/* Bold black hero band */
.ps-hero-band {
  background: var(--ps-black);
  padding: 128px 0 72px;
}

.ps-inner {
  max-width: var(--ps-max);
  margin: 0 auto;
  padding: 0 40px;
}

.ps-hero {
  max-width: 760px;
}

.ps-title {
  font-family: var(--sr-font-display, "Inter Tight", "Inter", system-ui, sans-serif);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 0 0 22px;
}

.ps-title .hl {
  background: var(--ps-yellow);
  color: #000;
  padding: 0 0.12em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.ps-subtitle {
  font-family: var(--sr-font-display, "Inter Tight", "Inter", system-ui, sans-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ps-yellow);
  margin: 0 0 20px;
}

.ps-lede {
  font-family: var(--sr-font-body, "Inter", system-ui, sans-serif);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--ps-lede);
  margin: 0;
  max-width: 640px;
}

/* Content below hero */
.ps-content {
  max-width: var(--ps-max);
  margin: 0 auto;
  padding: 56px 40px 96px;
}

.ps-content--narrow {
  max-width: 1000px;
}

/* Interactive cards — Level 3: yellow fill */
.ps-card {
  background: #fff;
  border-radius: 18px;
  border: 2px solid var(--ps-border);
  padding: 26px 26px 24px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.ps-card:hover,
.ps-card:focus-visible {
  background: var(--ps-yellow);
  border-color: var(--ps-yellow);
  transform: translateY(-4px);
  outline: none;
  box-shadow: var(--ps-focus);
}

/* Pill CTAs — use .sr-btn / .sr-btn-primary / .sr-btn-secondary from main.css */
.ps-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 48px;
}

@media (max-width: 560px) {
  .ps-hero-band { padding: 110px 0 56px; }
  .ps-inner,
  .ps-content { padding-left: 22px; padding-right: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .ps-card {
    transition: none;
  }
  .ps-card:hover,
  .ps-card:focus-visible {
    transform: none;
  }
}