:root {
  --bg: #f7f3ec;
  --ink: #2b2521;
  --muted: #a89c8e;
  --accent: #b5654a;
}
[data-theme="dark"] {
  --bg: #1c1a18;
  --ink: #ece5dc;
  --muted: #6e655c;
  --accent: #d98a6c;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Fraunces', 'Noto Serif JP', serif;
  font-weight: 350;
  transition: background 0.5s ease, color 0.5s ease;
  -webkit-font-smoothing: antialiased;
}
.page {
  display: flex;
  align-items: stretch;
  gap: 4rem;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 7vh 7vw;
}
.content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
}
.top {
  display: flex;
  flex-direction: column;
}
.theme-toggle {
  align-self: flex-start;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  transition: color 0.25s ease;
  padding: 0;
  margin-bottom: 5vh;
}
.theme-toggle:hover { color: var(--ink); }
.name {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 340;
  font-optical-sizing: auto;
  font-size: clamp(5rem, 16vw, 12rem);
  letter-spacing: -0.01em;
  line-height: 0.95;
  margin-bottom: 6vh;
}
.lede {
  max-width: 38ch;
}
.lede p {
  font-family: 'Fraunces', 'Noto Serif JP', serif;
  font-size: clamp(1.25rem, 1.92vw, 1.55rem);
  line-height: 1.85;
  margin-bottom: 1.8em;
}
.lede p:last-child { margin-bottom: 0; }

.meta {
  margin-top: 6vh;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
.links {
  display: flex;
  gap: 2.2rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.94rem;
  letter-spacing: 0.06em;
}
.links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.25s ease;
  position: relative;
}
.links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.links a:hover { color: var(--ink); }
.links a:hover::after { width: 100%; }
.clock {
  margin-top: 0;
  margin-left: auto;
  font-family: 'DM Mono', monospace;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.copyright {
  width: 100%;
  margin-top: 1.5rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  opacity: 0.7;
}
.signature {
  flex: 0 0 auto;
  width: 4.5rem;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  border-radius: 2px;
}
.signature:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 10px;
}
.signature .glyphs {
  writing-mode: vertical-rl;
  font-family: 'Noto Serif JP', serif;
  font-weight: 400;
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  letter-spacing: 0.5em;
  color: var(--ink);
  line-height: 1.4;
  transition: color 0.5s ease, opacity 0.4s ease;
  user-select: none;
}
.signature:hover .glyphs {
  color: var(--accent);
}
.signature .hint {
  writing-mode: vertical-rl;
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--muted);
  margin-left: 1.2rem;
  text-transform: uppercase;
  opacity: 0.6;
}
.lang-state {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  writing-mode: vertical-rl;
  letter-spacing: 0.3em;
  margin-left: 1.2rem;
  opacity: 0.6;
}
.fade {
  transition: opacity 0.35s ease;
}
.fade.out { opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

@media (max-width: 1024px) {
  .lede { max-width: 32ch; }
  .page { gap: 2.5rem; }
}
@media (max-width: 880px) {
  .page {
    flex-direction: column;
    justify-content: space-between;
    gap: 0;
    padding: 6vh 6vw 4rem;
    min-height: 100vh;
  }
  .name {
    font-size: clamp(3.4rem, 20vw, 6rem);
    margin-bottom: 4vh;
  }
  .lede { max-width: none; }
  .lede p { font-size: 1.25rem; line-height: 1.8; margin-bottom: 1.6em; }
  .meta { margin-top: 4.5vh; }
  .links { flex-wrap: wrap; gap: 1.5rem; }
  .signature {
    margin-top: 2.5rem;
    align-items: center;
  }
  .signature .glyphs { writing-mode: horizontal-tb; letter-spacing: 0.15em; font-size: 1.3rem; }
  .signature .hint { writing-mode: horizontal-tb; margin-left: 0.8rem; margin-top: 0.2rem; }
  .lang-state { writing-mode: horizontal-tb; margin-left: 0.8rem; }
}
@media (max-width: 380px) {
  .name { font-size: clamp(2.8rem, 22vw, 4.2rem); }
  .lede p { font-size: 1.2rem; line-height: 1.75; margin-bottom: 1.4em; }
}