:root { --text: #1f1f1f; --muted: #6b6b6b; --line: #e3e0da; --bg: #fbfaf7; --accent: #2f5d8a; }
@media (prefers-color-scheme: dark) {
  :root { --text: #e8e5de; --muted: #8b877f; --line: #34322e; --bg: #191917; --accent: #8db4dc; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 20px 16px 64px; }
h1 { font-size: 1.35rem; margin: 0 0 4px; }
h2 { font-size: 1.05rem; margin: 32px 0 8px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
nav { display: flex; justify-content: space-between; gap: 12px; font-size: .9rem; margin-bottom: 16px; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: .9rem; }
.item { padding: 12px 0; border-bottom: 1px solid var(--line); }
.word { font-size: 1.15rem; font-weight: 700; }
.tag { font-size: .75rem; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; margin-left: 6px; }
.en { font-weight: 600; }
.pattern { font-family: ui-monospace, monospace; font-size: .95rem; }
ul.var { margin: 4px 0 0; padding-left: 1.1em; }
details > summary { cursor: pointer; color: var(--accent); }
.marks { display: flex; gap: 8px; margin-top: 8px; }
button { font: inherit; font-size: .9rem; padding: 6px 12px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--text); cursor: pointer; }
button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); font-weight: 700; }
textarea { width: 100%; font: inherit; padding: 8px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--text); margin-top: 6px; }