:root{color-scheme:light dark;font-family:system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:#fafafa;color:#18181b}.wrap{max-width:460px;margin:48px auto;padding:0 20px}h1{font-size:22px;margin:0 0 2px}.sub{color:#71717a;font-size:14px;margin:0 0 20px}ul{list-style:none;padding:0;margin:0 0 16px;flex-direction:column;gap:8px}li,ul{display:flex}li{align-items:center;gap:10px;padding:11px 13px;background:#fff;border:1px solid #e4e4e7;border-radius:8px;cursor:pointer;font-size:15px}li.done{color:#a1a1aa;text-decoration:line-through}.box{width:18px;height:18px;border:1px solid #d4d4d8;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:#2563eb}form{display:flex;gap:8px}input{flex:1 1;padding:10px 12px;border:1px solid #d4d4d8;border-radius:8px}button,input{font-size:14px}button{padding:10px 16px;border:0;border-radius:8px;background:#2563eb;color:#fff;cursor:pointer}