:root {
  --bg: #f2f1ee;
  --surface: #ffffff;
  --text: #171717;
  --muted: #5d5c57;
  --border: rgb(0 0 0 / 0.08);
  --shadow: 0 1px 2px rgb(0 0 0 / 0.04), 0 10px 28px -16px rgb(0 0 0 / 0.18);
  --brand: #4e7bfb;
  --warn: #f3a617;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --surface: #161618;
    --text: #ededec;
    --muted: #a3a29d;
    --border: rgb(255 255 255 / 0.08);
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding-inline: clamp(16px, 4vw, 48px);
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}

.masthead, .notice, main, footer {
  max-width: 1200px;
  margin-inline: auto;
}

.masthead {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 28px);
  padding-block: clamp(40px, 9vw, 96px) clamp(28px, 4vw, 44px);
}

.logo { flex: none; width: clamp(44px, 6vw, 64px); height: auto; }

h1 {
  margin: 0 0 6px;
  font: 400 clamp(2.2rem, 5.5vw, 3.6rem)/1.02 var(--serif);
  letter-spacing: -0.015em;
}

h1 em { color: var(--muted); }

.lede { margin: 0; max-width: 62ch; color: var(--muted); font-size: 1.05rem; }

.notice {
  margin-block: 0 28px;
  padding: 12px 16px;
  border-left: 3px solid var(--warn);
  border-radius: 10px;
  background: color-mix(in srgb, var(--warn) 12%, var(--surface));
  font-size: 0.92rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr));
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.grid > li { display: flex; }

.tile {
  --accent: var(--brand);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 22px 18px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.tile:hover, .tile:focus-visible {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 60%, transparent);
  box-shadow: 0 16px 36px -18px color-mix(in srgb, var(--accent) 70%, transparent);
}

.tile:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.icon {
  width: 88px;
  height: 88px;
  margin-bottom: 12px;
  border-radius: 20px;
  transition: transform 0.18s ease;
}

.tile:hover .icon { transform: rotate(-3deg) scale(1.04); }

.category {
  color: color-mix(in srgb, var(--accent) 72%, var(--text));
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.name { margin: 0; font: 400 1.8rem/1.1 var(--serif); }

.description { margin: 0; color: var(--muted); }

.note {
  margin: 6px 0 0;
  padding: 8px 10px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--muted);
  font-size: 0.84rem;
}

.meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  font-size: 0.8rem;
}

.version { color: var(--muted); font-family: var(--mono); }

.status {
  margin-left: auto;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
}

.meta::after {
  content: "→";
  color: var(--accent);
  font-size: 1.1rem;
  transition: transform 0.18s ease;
}

.tile:hover .meta::after { transform: translateX(3px); }

footer {
  margin-top: 64px;
  padding-block: 28px 44px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
}

footer p { margin: 0 0 6px; }

a { color: inherit; text-underline-offset: 3px; }

@media (max-width: 560px) {
  .masthead { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .tile, .icon, .meta::after { transition: none; }
  .tile:hover, .tile:focus-visible, .tile:hover .icon, .tile:hover .meta::after { transform: none; }
}