:root {
  color-scheme: light;
  --bg-base: #fafaff;
  --bg-surface: #ffffff;
  --bg-alt: #f0f4f8;
  --primary-main: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  --accent-mango: #f59e0b;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 10px 25px -5px rgba(99, 102, 241, 0.1);
  --shadow-hover: 0 20px 25px -5px rgba(99, 102, 241, 0.15);
  --font: "Plus Jakarta Sans", "Segoe UI", sans-serif;
}

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

html {
  background: var(--bg-base);
}

body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--primary-main);
  outline-offset: 2px;
}

a {
  color: var(--primary-main);
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  left: 8px;
  top: -40px;
  background: var(--bg-surface);
  padding: 8px;
  z-index: 20;
}

.skip:focus {
  top: 8px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: color-mix(in srgb, var(--bg-base) 88%, transparent);
  backdrop-filter: blur(12px);
}

.mark {
  color: var(--text-main);
  font-weight: 700;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 16px;
}

.nav a {
  color: var(--text-main);
  font-weight: 500;
  text-decoration: none;
}

.nav a:hover {
  color: var(--primary-hover);
}

.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px 48px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary-main);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.lede {
  margin: 16px auto 0;
  max-width: 38rem;
  color: var(--text-muted);
  font-size: 1.125rem;
}

.search {
  display: flex;
  gap: 8px;
  margin: 32px auto 0;
  max-width: 640px;
  padding: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  box-shadow: var(--shadow-card);
}

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 12px 16px;
  font: inherit;
  color: inherit;
  font-size: 1.05rem;
}

.search input:focus {
  outline: none;
}

.search button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: var(--primary-main);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 12px 20px;
  cursor: pointer;
  white-space: nowrap;
}

.search button:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.search button:active {
  transform: translateY(0);
}

.spark {
  width: 18px;
  height: 18px;
  animation: float 2.4s ease-in-out infinite;
}

.count {
  margin: 16px 0 0;
  color: var(--text-muted);
  font-weight: 500;
}

.features,
.categories {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 24px 48px;
}

.features h2,
.categories h2 {
  margin: 0 0 16px;
  font-size: 1.875rem;
  letter-spacing: -0.02em;
}

.features ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.features li {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.features h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.features p {
  margin: 0;
  color: var(--text-muted);
}

.categories ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.categories a {
  display: block;
  background: var(--bg-surface);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
}

.categories a:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}

.categories li:nth-child(3n + 2) a:hover {
  background: color-mix(in srgb, var(--accent-mango) 18%, white);
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 24px 64px;
}

.prose h1 {
  font-size: 2rem;
  line-height: 1.2;
}

footer p {
  margin: 0;
}

@media (max-width: 800px) {
  .features ol,
  .categories ul {
    grid-template-columns: 1fr;
  }

  .search {
    flex-direction: column;
    border-radius: var(--radius-lg);
  }

  .search button {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .spark,
  .search button,
  .categories a {
    animation: none;
    transition: none;
  }

  .search button:hover,
  .categories a:hover {
    transform: none;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}