:root{--bg: #fafaf7;--fg: #1f2328;--muted: #656d76;--line: #d8dee4;--accent: #0b6e4f;color-scheme:light dark;font-family:system-ui,Hiragino Sans,Noto Sans JP,sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #16181c;--fg: #e6edf3;--muted: #9198a1;--line: #30363d;--accent: #3fb68b}}body{margin:0;background:var(--bg);color:var(--fg)}main{max-width:40rem;margin:0 auto;padding:2rem 1rem}h1{font-size:1.5rem}.todo-list{list-style:none;padding:0;border-top:1px solid var(--line)}.todo-list li{padding:.6rem .25rem;border-bottom:1px solid var(--line)}.todo-list li[data-done=true]{color:var(--muted);text-decoration:line-through}.summary,.empty{color:var(--muted)}