:root { color-scheme: light; --ink: #1b1a17; --muted: #55534b; --ground: #f6f3ec; --card: #fffdf8; --line: #d9d4c7; --blue: #1d4a7a; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--ground); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, sans-serif; }
.strip { margin: 0; padding: 8px 12px; padding-top: calc(8px + env(safe-area-inset-top)); background: var(--ink); color: var(--ground); font-size: 11px; letter-spacing: 0.08em; text-align: center; }
main { padding: 20px 20px 24px; display: flex; flex-direction: column; gap: 14px; max-width: 560px; margin: 0 auto; }
footer { padding: 0 20px calc(24px + env(safe-area-inset-bottom)); max-width: 560px; margin: 0 auto; }
h1 { margin: 0; font-size: 30px; line-height: 1.15; }
h2 { margin: 0; font-size: 18px; }
p { margin: 0; }
.note { font-size: 14px; color: var(--muted); }
.card { padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; display: flex; flex-direction: column; gap: 8px; }
.word { font-family: Georgia, "Times New Roman", serif; font-size: 19px; line-height: 1.4; }
.word-card { border: 1.5px solid var(--ink); }
.meta { font-size: 13px; color: var(--muted); }
.changed { opacity: 0.7; border-style: dashed; }
button { min-height: 48px; padding: 0 16px; border: 0; border-radius: 24px; background: var(--blue); color: #fff; font: inherit; font-weight: 600; }
button.secondary { background: var(--card); color: var(--blue); border: 1px solid var(--blue); }
button.plain { background: none; color: var(--blue); min-height: 44px; padding: 0; text-align: left; }
.choices { display: flex; flex-direction: column; gap: 10px; }
label { font-size: 14px; font-weight: 600; }
textarea { width: 100%; min-height: 96px; padding: 12px; border: 1px solid #8a877d; border-radius: 10px; background: var(--card); font: inherit; color: var(--ink); }
ol.chain { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
ol.chain li { padding-left: 14px; border-left: 3px solid var(--line); }