:root {
  --bg: #101425;
  --ink: #f4f0e6;
  --muted: #9aa0bf;
  --line: #232a4a;
  --mint: #52d1b8;
  --peri: #7b8cff;
  --amber: #ffc857;
  --ember: #ff7a59;
  --pixel: "DotGothic16", "Courier New", monospace;
  --body: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

body {
  font-family: var(--body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Home ---------- */

.home {
  height: 100dvh;
  overflow: hidden;
}

#hero {
  position: fixed;
  inset: 0;
  display: block;
  image-rendering: pixelated;
}

.hero {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.tagline {
  position: absolute;
  left: 1rem;
  right: 1rem;
  top: calc(var(--word-bottom, 60vh) + 1.75rem);
  margin: 0;
  text-align: center;
  font-family: var(--pixel);
  font-size: clamp(14px, 1.3vw, 18px);
  color: var(--muted);
  letter-spacing: 0.02em;
  opacity: 0;
  animation: rise 0.8s ease-out 1.9s forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- Footer (shared) ---------- */

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding: 1rem clamp(1rem, 3vw, 2.5rem) calc(1rem + env(safe-area-inset-bottom, 0px));
  font-family: var(--pixel);
  font-size: 16px;
  color: var(--muted);
}

.home .site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
}

.site-footer nav {
  display: flex;
  gap: 1.5rem;
}

.site-footer a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 1px;
}

.site-footer a:hover {
  border-bottom-color: var(--mint);
}

/* ---------- Inner pages ---------- */

.site-header {
  padding: 1.25rem clamp(1rem, 3vw, 2.5rem);
  font-family: var(--pixel);
}

.brand {
  text-decoration: none;
  font-size: 18px;
  letter-spacing: 0.1em;
}

.brand:hover { color: var(--mint); }

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2.5rem clamp(1rem, 4vw, 2rem) 5rem;
}

.page h1 {
  font-family: var(--pixel);
  font-weight: 400;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.3;
  margin: 0 0 0.5rem;
}

.page .updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2.5rem;
}

.page .lead {
  margin: 0 0 1rem;
}

.page h2 {
  font-family: var(--pixel);
  font-weight: 400;
  font-size: 1.3rem;
  line-height: 1.4;
  margin: 3rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.page p { margin: 0 0 1rem; }

.page ul {
  margin: 0 0 1rem;
  padding-left: 1.5em;
}

.page li { margin: 0.3em 0; }

.page a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.page a:hover { color: var(--amber); }

@media (max-width: 480px) {
  .site-footer { font-size: 14px; }
  .page h2 { font-size: 1.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  .tagline { animation: none; opacity: 1; }
}