*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --header-bg: #1a1a2e;
  --header-text: #eee;
  --page-bg: #f5f5f7;
  --content-bg: #fff;
  --accent: #e94560;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--page-bg);
  color: #222;
  line-height: 1.5;
}

/* Demo header — replace with your own styles in other projects */
.site-header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 1rem 1.5rem;
  z-index: 100;
}

.site-header__inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-header__nav {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav a {
  color: inherit;
  text-decoration: none;
  opacity: 0.85;
}

.site-header__nav a:hover {
  opacity: 1;
}

/* Required for scroll-linked behavior once header is off-screen */
.scroll-linked-header--fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  will-change: transform;
}

.scroll-linked-header-spacer {
  pointer-events: none;
}

/* Demo content */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.hero {
  background: var(--content-bg);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 1px 3px rgb(0 0 0 / 8%);
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}

.hero p {
  margin: 0;
  color: #555;
}

.section {
  background: var(--content-bg);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgb(0 0 0 / 8%);
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  color: var(--accent);
}

.section p {
  margin: 0 0 0.75rem;
  color: #444;
}

.section p:last-child {
  margin-bottom: 0;
}

.scroll-hint {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: rgb(26 26 46 / 92%);
  color: #fff;
  font-size: 0.8125rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  pointer-events: none;
  z-index: 50;
}